Honda Motor (HMC) 20-F20 Jun 242024 FY Annual report (foreign)Financial data

Company Profile

Cover Page

Cover Page	12 Months Ended
Cover Page	Mar. 31, 2024 shares
Document Information [Line Items]
Document Type	20-F
Amendment Flag	false
Document Period End Date	Mar. 31, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Document Registration Statement	false
Document Annual Report	true
Document Transition Report	false
Document Shell Company Report	false
Entity Registrant Name	HONDA MOTOR CO., LTD.
Entity Central Index Key	0000715153
Current Fiscal Year End Date	--03-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Shell Company	false
ICFR Auditor Attestation Flag	true
Entity File Number	1-7628
Entity Incorporation, State or Country Code	M0
Entity Address, Address Line One	No. 1-1, Minami-Aoyama 2-chome
Entity Address, Address Line Two	Minato-ku
Entity Address, City or Town	Tokyo
Entity Address, Country	JP
Entity Address, Postal Zip Code	107-8556
Document Accounting Standard	International Financial Reporting Standards
Auditor Name	KPMG AZSA LLC
Auditor Firm ID	1009
Auditor Location	Tokyo, Japan
Document Financial Statement Error Correction [Flag]	false
Business Contact [Member]
Document Information [Line Items]
Entity Address, Address Line One	No. 1-1, Minami-Aoyama 2-chome
Entity Address, Address Line Two	Minato-ku
Entity Address, City or Town	Tokyo
Entity Address, Country	JP
Entity Address, Postal Zip Code	107-8556
Contact Personnel Name	Ryosuke Niwa
City Area Code	+81-3
Local Phone Number	5412-1134
American Depositary Shares [Member]
Document Information [Line Items]
Title of 12(b) Security	American Depositary Shares
Trading Symbol	HMC
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding	259,782,129
Common Stock [member]
Document Information [Line Items]
Title of 12(b) Security	Common Stock
No Trading Symbol Flag	true
Security Exchange Name	NONE
Entity Common Stock, Shares Outstanding	4,828,907,376

Consolidated Statements of Fina

Consolidated Statements of Financial Position - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Current assets:
Cash and cash equivalents	¥ 4,954,565	¥ 3,803,014
Trade receivables	1,240,090	1,060,271
Receivables from financial services	2,558,594	1,899,493
Other financial assets	229,583	263,892
Inventories	2,442,969	2,167,184
Other current assets	446,763	384,494
Total current assets	11,872,564	9,578,348
Non-current assets:
Investments accounted for using the equity method	1,206,968	915,946
Receivables from financial services	5,616,676	3,995,259
Other financial assets	968,142	855,070
Intangible assets	999,689	870,900
Deferred tax assets	170,856	105,792
Other non-current assets	502,074	454,351
Total non-current assets	17,901,586	15,091,719
Total assets	29,774,150	24,670,067
Current liabilities:
Trade payables	1,609,836	1,426,333
Financing liabilities	4,105,590	3,291,195
Accrued expenses	638,319	419,570
Other financial liabilities	340,858	324,110
Income taxes payable	157,410	86,252
Provisions	566,722	362,701
Other current liabilities	904,757	741,963
Total current liabilities	8,323,492	6,652,124
Non-current liabilities:
Financing liabilities	6,057,967	4,373,973
Other financial liabilities	316,919	288,736
Retirement benefit liabilities	284,844	255,852
Provisions	385,001	270,169
Deferred tax liabilities	855,067	877,300
Other non-current liabilities	544,988	449,622
Total non-current liabilities	8,444,786	6,515,652
Total liabilities	16,768,278	13,167,776
Equity:
Common stock	86,067	86,067
Capital surplus	205,073	185,589
Treasury stock	(550,808)	(484,931)
Retained earnings	10,644,213	9,980,128
Other components of equity	2,312,450	1,417,397
Equity attributable to owners of the parent	12,696,995	11,184,250
Non-controlling interests	308,877	318,041
Total equity	13,005,872	11,502,291
Total liabilities and equity	29,774,150	24,670,067
Equipment on operating leases [member]
Non-current assets:
Property, plant and equipment	5,202,768	4,726,292
Property, plant and equipment [member]
Non-current assets:
Property, plant and equipment	¥ 3,234,413	¥ 3,168,109

Consolidated Statements of Inco

Consolidated Statements of Income - JPY (¥) ¥ in Millions	12 Months Ended
Consolidated Statements of Income - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Profit or loss [abstract]
Sales revenue	¥ 20,428,802	¥ 16,907,725	¥ 14,552,696
Operating costs and expenses:
Cost of sales	(16,016,659)	(13,576,133)	(11,567,923)
Selling, general and administrative	(2,106,539)	(1,669,908)	(1,326,485)
Research and development	(923,627)	(880,915)	(787,056)
Total operating costs and expenses	(19,046,825)	(16,126,956)	(13,681,464)
Operating profit	1,381,977	780,769	871,232
Share of profit of investments accounted for using the equity method	110,817	117,445	202,512
Finance income and finance costs:
Interest income	173,695	73,071	25,627
Interest expense	(59,631)	(36,112)	(16,867)
Other, net	35,526	(55,608)	(12,314)
Total finance income and finance costs	149,590	(18,649)	(3,554)
Profit before income taxes	1,642,384	879,565	1,070,190
Income tax expense	(459,794)	(162,256)	(309,489)
Profit for the year	1,182,590	717,309	760,701
Profit for the year attributable to:
Owners of the parent	1,107,174	651,416	707,067
Non-controlling interests	¥ 75,416	¥ 65,893	¥ 53,634
Earnings per share attributable to owners of the parent
Earnings per share attributable to owners of the parent Basic	¥ 225.88	¥ 128.01	¥ 137.03
Earnings per share attributable to owners of the parent Diluted	¥ 225.88	¥ 128.01	¥ 137.03

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Statement of comprehensive income [abstract]
Profit for the year	¥ 1,182,590	¥ 717,309	¥ 760,701
Items that will not be reclassified to profit or loss
Remeasurements of defined benefit plans	(18,931)	3,350	117,042
Net changes in revaluation of financial assets measured at fair value through other comprehensive income	(25,469)	(18,465)	58,635
Share of other comprehensive income of investments accounted for using the equity method	8,300	292	1,786
Items that may be reclassified subsequently to profit or loss
Net changes in revaluation of financial assets measured at fair value through other comprehensive income	56	(474)	(682)
Exchange differences on translating foreign operations	875,050	422,960	680,724
Share of other comprehensive income of investments accounted for using the equity method	54,353	30,429	77,447
Total other comprehensive income, net of tax	893,359	438,092	934,952
Comprehensive income for the year	2,075,949	1,155,401	1,695,653
Comprehensive income for the year attributable to:
Owners of the parent	1,981,448	1,081,429	1,619,997
Non-controlling interests	¥ 94,501	¥ 73,972	¥ 75,656

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity - JPY (¥) ¥ in Millions	Total	Common stock [Member]	Capital surplus [Member]	Treasury stock [member]	Retained earnings [Member]	Other components of equity [member]	Equity attributable to owners of the parent [Member]	Non-controlling interests [Member]
Beginning balance at Mar. 31, 2021	¥ 9,372,839	¥ 86,067	¥ 172,049	¥ (273,786)	¥ 8,901,266	¥ 196,710	¥ 9,082,306	¥ 290,533
Comprehensive income for the year
Profit for the year	760,701				707,067		707,067	53,634
Other comprehensive income, net of tax	934,952					912,930	912,930	22,022
Total comprehensive income for the year	1,695,653				707,067	912,930	1,619,997	75,656
Reclassification to retained earnings					119,202	(119,202)
Transactions with owners and other
Dividends paid	(233,533)				(188,402)		(188,402)	(45,131)
Purchases of treasury stock	(62,758)			(62,758)			(62,758)
Disposal of treasury stock	578			578			578
Share-based payment transactions	(233)		(233)				(233)
Equity transactions and others			13,679	7,657			21,336	(21,336)
Total transactions with owners and other	(295,946)		13,446	(54,523)	(188,402)		(229,479)	(66,467)
Ending balance at Mar. 31, 2022	10,772,546	86,067	185,495	(328,309)	9,539,133	990,438	10,472,824	299,722
Comprehensive income for the year
Profit for the year	717,309				651,416		651,416	65,893
Other comprehensive income, net of tax	438,092					430,013	430,013	8,079
Total comprehensive income for the year	1,155,401				651,416	430,013	1,081,429	73,972
Reclassification to retained earnings					3,054	(3,054)
Transactions with owners and other
Dividends paid	(265,076)				(213,475)		(213,475)	(51,601)
Purchases of treasury stock	(157,001)			(157,001)			(157,001)
Disposal of treasury stock	379			379			379
Share-based payment transactions	94		94				94
Equity transactions and others	(4,052)							(4,052)
Total transactions with owners and other	(425,656)		94	(156,622)	(213,475)		(370,003)	(55,653)
Ending balance at Mar. 31, 2023	11,502,291	86,067	185,589	(484,931)	9,980,128	1,417,397	11,184,250	318,041
Comprehensive income for the year
Profit for the year	1,182,590				1,107,174		1,107,174	75,416
Other comprehensive income, net of tax	893,359					874,274	874,274	19,085
Total comprehensive income for the year	2,075,949				1,107,174	874,274	1,981,448	94,501
Reclassification to retained earnings					(17,715)	17,715
Transactions with owners and other
Dividends paid	(305,760)				(241,865)		(241,865)	(63,895)
Purchases of treasury stock	(250,513)			(250,513)			(250,513)
Disposal of treasury stock	504			504			504
Cancellation of treasury stock			(623)	184,132	(183,509)
Share-based payment transactions	3		3				3
Equity transactions and others	(16,602)		20,104			3,064	23,168	(39,770)
Total transactions with owners and other	(572,368)		19,484	(65,877)	(425,374)	3,064	(468,703)	(103,665)
Ending balance at Mar. 31, 2024	¥ 13,005,872	¥ 86,067	¥ 205,073	¥ (550,808)	¥ 10,644,213	¥ 2,312,450	¥ 12,696,995	¥ 308,877

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Profit before income taxes	¥ 1,642,384	¥ 879,565	¥ 1,070,190
Depreciation, amortization and impairment losses excluding equipment on operating leases	794,366	721,630	611,063
Share of profit of investments accounted for using the equity method	(110,817)	(117,445)	(202,512)
Finance income and finance costs, net	(141,250)	(71,661)	(56,352)
Interest income and interest costs from financial services, net	(152,041)	(146,461)	(155,872)
Changes in assets and liabilities
Trade receivables	(138,323)	(155,924)	(24,037)
Inventories	(67,833)	(171,467)	(208,895)
Trade payables	36,516	105,272	50,122
Accrued expenses	157,582	42,122	(68,811)
Provisions and retirement benefit liabilities	263,593	90,880	(156,079)
Receivables from financial services	(1,454,357)	(41,480)	509,741
Equipment on operating leases	12,661	768,070	171,600
Other assets and liabilities	58,325	218,369	28,981
Other, net	(48,219)	(1,222)	(19,782)
Dividends received	158,092	244,902	193,555
Interest received	560,709	324,234	237,724
Interest paid	(283,447)	(159,020)	(97,884)
Income taxes paid, net of refund	(540,663)	(401,342)	(203,130)
Net cash provided by operating activities	747,278	2,129,022	1,679,622
Cash flows from investing activities:
Payments for additions to property, plant and equipment	(348,680)	(475,048)	(268,143)
Payments for additions to and internally developed intangible assets	(259,985)	(157,440)	(181,083)
Proceeds from sales of property, plant and equipment and intangible assets	14,418	16,206	27,108
Proceeds from sales of subsidiaries, net of cash and cash equivalents disposed of	(18,544)	740
Payments for acquisitions of investments accounted for using the equity method	(173,767)	(23,826)
Payments for acquisitions of other financial assets	(282,076)	(527,334)	(488,631)
Proceeds from sales and redemptions of other financial assets	201,367	488,642	534,693
Net cash used in investing activities	(867,267)	(678,060)	(376,056)
Cash flows from financing activities:
Proceeds from short-term financing liabilities	10,020,736	9,127,333	7,487,724
Repayments of short-term financing liabilities	(10,045,118)	(8,684,799)	(7,960,144)
Proceeds from long-term financing liabilities	3,654,964	971,067	2,002,823
Repayments of long-term financing liabilities	(2,056,083)	(2,382,190)	(1,761,561)
Dividends paid to owners of the parent	(241,865)	(213,475)	(188,402)
Dividends paid to non-controlling interests	(66,855)	(51,376)	(53,813)
Purchases and sales of treasury stock, net	(250,009)	(156,622)	(62,180)
Repayments of lease liabilities	(80,513)	(78,297)	(80,165)
Other, net	(16,611)
Net cash provided by (used in) financing activities	918,646	(1,468,359)	(615,718)
Effect of exchange rate changes on cash and cash equivalents	352,894	145,480	229,063
Net change in cash and cash equivalents	1,151,551	128,083	916,911
Cash and cash equivalents at beginning of year	3,803,014	3,674,931	2,758,020
Cash and cash equivalents at end of year	¥ 4,954,565	¥ 3,803,014	¥ 3,674,931

Insider Trading Policies and Pr

Insider Trading Policies and Procedures	12 Months Ended
Insider Trading Policies and Procedures	Mar. 31, 2024
Insider Trading Policies and Procedures [Line Items]
Insider Trading Policies and Procedures Adopted	true

Reporting Entity

Reporting Entity	12 Months Ended
Reporting Entity	Mar. 31, 2024
TextBlock1 [Abstract]
Reporting Entity	(1) Reporting Entity Honda Motor Co., Ltd. (the “Company”) is a public company domiciled in Japan. The Company and its subsidiaries (collectively “Honda”) develop, manufacture and distribute motorcycles, automobiles, power products and others throughout the world, and also provide financial services to customers and dealers for the sale of those products. Principal manufacturing facilities are located in Japan, the United States of America, Canada, Mexico, China, India, Indonesia, Malaysia, Thailand, Vietnam and Brazil.

Basis of Preparation

Basis of Preparation	12 Months Ended
Basis of Preparation	Mar. 31, 2024
TextBlock1 [Abstract]
Basis of Preparation	(2) Basis of Preparation (a) Compliance with International Financial Reporting Standards The Company’s consolidated financial statements have been prepared in accordance with International Financial Reporting Standards (“IFRS”), as issued by the International Accounting Standards Board (“IASB”). The term “IFRS” also includes International Accounting Standards (IASs) and the related interpretations of the interpretations committees (SIC and IFRIC). (b) Basis of Measurement The consolidated financial statements have been prepared on the historical cost basis, except for certain assets and liabilities separately stated in note 3. (c) Functional Currency and Presentation Currency The consolidated financial statements are presented in Japanese yen, which is the functional currency of the Company. All financial information presented in Japanese yen has been rounded to the nearest million Japanese yen, except when otherwise indicated. (d) New Accounting Standards and Interpretations Not Yet Adopted New or amended standards and interpretations that have been issued as of the date of approval of the consolidated financial statements but are not effective and have not yet been adopted by Honda as of March 31, 2024 are as follows. Honda is currently evaluating the impact of adoption of this standard on the Company’s consolidated financial statements. Standards and interpretations Mandatory adoption Reporting periods in Overview of new or amended IFRS 18 Presentation and Disclosure in Financial Statements January 1, 2027 To be determined New standard which supersedes current standard of presentation and disclosure in financial statements (e) Use of Estimates and Judgments The preparation of consolidated financial statements in accordance with IFRS requires management to make judgments, estimates and assumptions that affect the application of accounting policies, the reported amount of assets, liabilities, revenues and expenses, and the disclosure of contingent assets and liabilities. Actual results could differ from these estimates. These estimates and underlying assumptions are reviewed on a continuous basis. Changes in these accounting estimates are recognized in the period in which the estimates are revised and in any future periods affected. Information about judgments that have been made in the process of applying accounting policies and that have significant effects on the amounts reported in the consolidated financial statements is as follows: • Scope of subsidiaries, affiliates and joint ventures (notes 3(a) and 3(b)) • Recognition of intangible assets arising from development (note 3(h)) • Accounting for contracts including lease (note 3(i)) Information about accounting estimates and assumptions that have significant effects on the amounts reported in the consolidated financial statements is as follows: • End of term residual values of operating lease vehicles (note 3(f)) • Valuation of financial assets measured at amortized cost and debt securities classified into financial assets measured at fair value through other comprehensive income (notes 6, 7 and 8) • Fair value of financial instruments (note 26) • Net realizable value of inventories (note 9) • Recoverable amount of non-financial • Measurement of provisions (note 17) • Measurement of net defined benefit liabilities (assets) (note 18) • Recoverability of deferred tax assets (note 23) • Likelihood and magnitude of outflows of resources embodying economic benefits required to settle contingent liabilities (note 28)

Material Accounting Policies

Material Accounting Policies	12 Months Ended
Material Accounting Policies	Mar. 31, 2024
TextBlock1 [Abstract]
Material Accounting Policies	(3) Material Accounting Policies (a) Basis of Consolidation The consolidated financial statements include the accounts of the Company, its subsidiaries Honda controls an entity when Honda is exposed or has rights to variable returns from involvement with the entity, and has the ability to affect those returns by using its power, which is the current ability to direct the relevant activities, over the entity. To determine whether or not Honda controls an entity, status of voting rights or similar rights, contractual agreements and other specific factors are taken into consideration. Structured entities are entities designed so that voting or similar rights are not the dominant factor in deciding who controls the entity. Honda consolidates structured entities over which it has control, by comprehensively determining whether its control over the entity exists based on any contractual arrangements with such entity as well as the percentage of its voting or similar rights in the entity. The financial statements of subsidiaries are included in the consolidated financial statements from the date when the control is obtained until the date when the control is lost. The financial statements of subsidiaries have been adjusted in order to ensure consistency with the accounting policies adopted by the Company as necessary. Changes in the Company’s ownership interests in subsidiaries that do not result in a loss of control are accounted for as equity transactions. When control over a subsidiary is lost, the investment retained after the loss of control is remeasured at fair value as of the date of the loss of control, and any gain or loss on such remeasurement and disposal of the interest sold is recognized in profit or loss. (b) Investments in Affiliates and Joint Ventures (Investments Accounted for Using the Equity Method) Affiliates are entities over which Honda has a significant influence over the decisions on financial and operating policies, but does not have control or joint control. Joint ventures are joint arrangements whereby the parties including Honda that have joint control have rights to the net assets of the arrangement. Joint arrangements are arrangements of which two or more parties have joint control, and joint control is the contractually agreed sharing of control of an arrangement, which exists only when decisions about the relevant activities require the unanimous consent of the parties sharing control. Investments in affiliates and joint ventures are accounted for using the equity method from the date when the investees are determined to be affiliates or joint ventures until the date when they ceased to be classified as affiliates or joint ventures. Under the equity method, the investment is initially recognized at cost, and the carrying amount is subsequently increased or decreased, to recognize Honda’s The use of the equity method is discontinued from the date when the investees are determined to be no longer affiliates or joint ventures. The investment retained after cessation of the equity method is remeasured at fair value, and any gain or loss on such remeasurement and disposal of the investment is recognized in profit or loss. (c) Foreign Currency Translations 1) Foreign currency transactions Foreign currency transactions are translated into the respective functional currencies at the exchange rates prevailing when such transactions occur. All foreign currency receivables and payables are translated into the respective functional currencies at the applicable exchange rates at the end of the reporting period. Gains or losses on exchange differences arising on settlement of foreign currency receivables and payables or on their translations at the end of the reporting date are recognized in profit or loss and they are included in finance income and finance costs-other, net in the consolidated statements of income. 2) Foreign operations All assets and liabilities of foreign subsidiaries, affiliates and joint ventures (collectively “foreign operations”), which use a functional currency other than Japanese yen, are translated into Japanese yen at the exchange rates at the end of the reporting period. All revenues and expenses of foreign operations are translated into Japanese yen at the average exchange rate for the period except when a functional currency is the currency of a hyperinflationary economy. Exchange differences arising from translation are recognized in other comprehensive income and accumulated in other components of equity in the consolidated statements of financial position. When a foreign operation is disposed of, and control, significant influence or joint control over the foreign operation is lost, the cumulative amount of exchange differences relating to the foreign operation is reclassified from equity to profit or loss. (d) Financial Instruments A financial instrument is a contract that gives rise to a financial asset of one entity and a financial liability or equity security of another entity. When Honda becomes a party to the contractual provision of a financial instrument, the financial instrument is recognized either as a financial asset or as a financial liability. When Honda purchases or sells a financial asset, the financial asset is recognized or derecognized at the trade date. 1) Non-derivative Honda classifies financial assets other than derivatives into “financial assets measured at amortized cost”, “financial assets measured at fair value through other comprehensive income” or “financial assets measured at fair value through profit or loss”. Honda determines the classification of financial assets upon initial recognition. Financial assets are derecognized when the contractual rights to cash flows from the financial assets expire, or when the contractual rights to receive the cash flows from the financial assets are transferred and all risks and rewards of ownership of the financial assets are substantially transferred. Financial assets measured at amortized cost A financial asset is classified into financial assets measured at amortized cost when the asset is held within a business model whose objective is to hold the asset in order to collect the contractual cash flows, and the contractual term of the financial asset gives rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding. Financial assets measured at amortized cost except trade receivables arising from contracts with customers are initially measured at their fair value and trade receivables arising from contracts with customers are initially measured at their transaction price. Financial assets measured at amortized cost are subsequently measured at amortized cost using the effective interest method. Financial assets measured at fair value A financial asset other than a financial asset measured at amortized cost is classified into financial assets measured at fair value. The financial assets measured at fair value are further classified into the following categories: Financial assets measured at fair value through other comprehensive income A debt security is classified into financial assets measured at fair value through other comprehensive income when the asset is held within a business model whose objective is achieved by both collecting contractual cash flows and selling financial assets, and the contractual terms of the financial asset give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding. The debt securities are initially measured at their fair value, and subsequent changes in fair value are recognized in other comprehensive income except for impairment gain or loss and foreign exchange gain or loss. When the debt securities are derecognized, the cumulative gain or loss previously recognized in other comprehensive income is reclassified from equity to profit or loss. Honda elects to designate investments in equity securities such as shares, held for maintaining and strengthening the trade relationship as financial assets measured at fair value through other comprehensive income. Equity securities designated as financial assets measured at fair value through other comprehensive income are initially measured at their fair value, and subsequent changes in fair value of the investment are recognized in other comprehensive income. However, dividends from the equity securities are principally recognized in profit or loss. When the equity securities are derecognized, the cumulative gain or loss previously recognized in other comprehensive income is directly reclassified to retained earnings. Financial assets measured at fair value through profit or loss Financial assets measured at fair value other than financial assets measured at fair value through other comprehensive income are classified into financial assets measured at fair value through profit or loss. Financial assets measured at fair value through profit or loss are initially measured at their fair value, and subsequent changes in fair value are recognized in profit or loss. (Cash and cash equivalents) Cash and cash equivalents consist of cash on hand, demand deposits, and short-term highly liquid investments that are readily convertible to known amounts of cash and are subject to insignificant risk of changes in value. Honda includes all highly liquid debt instruments with original maturities of three months or less in cash equivalents. 2) Non-derivative Financial liabilities other than derivatives are initially measured at their fair value, and are subsequently measured at amortized cost using the effective interest method. Financial liabilities are derecognized, when the obligations specified in the contract are discharged, canceled or expire. 3) Derivatives Honda has entered into foreign exchange and interest rate agreements to manage currency and interest rate exposures. These agreements include foreign currency forward exchange contracts, currency option contracts, currency swap agreements and interest rate swap agreements. All these derivatives are initially recognized as assets or liabilities and measured at fair value, when Honda becomes a party to the contractual provision of the derivatives. Subsequent changes in fair value of derivatives are recognized in profit or loss in the period of the changes. Honda has not held any derivatives designated as hedging instruments for the years ended March 31, 2022, 2023 and 2024. 4) Offsetting of financial assets and financial liabilities Financial assets and financial liabilities are offset and the net amount is presented in the consolidated statements of financial position, only when Honda currently has a legally enforceable right to offset the recognized amounts, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. (e) Inventories Inventories are measured at the lower of cost and net realizable value. The cost of inventories includes purchase costs and conversion costs, and it is determined principally by using the first-in first-out method (f) Equipment on Operating Leases Equipment on operating leases is measured based on the cost model and carried at its cost less accumulated depreciation and impairment losses. A vehicle subject to operating lease is initially measured at its cost. Depreciation of equipment on operating leases is calculated on the straight-line method over the lease term. The depreciable amount is the cost of the vehicle less its residual value. Our most significant finance subsidiary located in the United States determines contractual residual values of operating lease vehicles at lease inception based on expectations of used vehicle values at the end of their lease term. The finance subsidiary in the United States depreciates operating lease vehicles on a straight-line basis over the lease term to the lower of contract residual values or estimated end of term residual values. The finance subsidiary in the United States assesses its estimates for end of term residual values of lease vehicles, at minimum, on a quarterly basis. Adjustments to estimated residual values are made on a straight-line basis over the remaining term of the lease and are recognized as depreciation expense. Lease customers have the option at the end of the lease term to return the vehicle to the dealer or to buy the vehicle for the contractual residual value (or if purchased prior to lease maturity, for the outstanding contractual balance). Returned lease vehicles can be purchased by the grounding dealer for the contractual residual value (or if purchased prior to lease maturity, for the outstanding contractual balance) or a market based price. Returned lease vehicles that are not purchased by the grounding dealers are sold through online and physical auctions. Estimated end of term residual values are dependent on the percentage of leased vehicles expected to be returned by lessees and the expected market values of leased vehicles at the end of their lease terms. Factors considered in this evaluation include, among other factors, economic conditions, external market information on new and used vehicles, historical trends, and recent auction values. (g) Property, Plant and Equipment Property, plant and equipment is measured based on the cost model and carried at its cost less accumulated depreciation and impairment losses. Property, plant and equipment is initially measured at its cost. Subsequent expenditures on an item of property, plant and equipment acquired, are recognized in the carrying amount of the item, only when it is probable that the expenditure will generate a future economic benefit. Depreciation of property, plant and equipment, except for land that is not subject to depreciation, is calculated on the straight-line method over the estimated useful life. The depreciable amount is the cost of the asset less the respective estimated residual values. The estimated useful lives used in calculating depreciation of property, plant and equipment are mainly as follows: • Buildings and structures: 3 to 50 years • Machinery and equipment: 2 to 20 years The depreciation method, useful lives and residual values of property, plant and equipment are reviewed annually at each fiscal year end, and adjusted prospectively, if appropriate. Property, plant and equipment in the consolidated statements of financial position includes right-of-use right-of-use (h) Intangible Assets Intangible assets are measured based on the cost model and carried at their cost less accumulated amortization and impairment losses. (Research and development) Development expenditure for a product is capitalized only when there is a technical and commercial feasibility of completing the development, Honda has intention, ability and sufficient resources to use the outcome of the development, it is probable that the outcome will generate a future economic benefit, and the cost can be measured reliably. Capitalized development cost is measured at the sum of expenditures for development incurred between when the foregoing conditions for capitalization are initially met and when the development is completed, and includes all directly attributable costs to the development process. Capitalized development cost is amortized using the straight-line method over the expected product life cycle of the developed product ranging mainly from 2 to 6 years. Expenditures on research and other development expenditures which do not meet the foregoing conditions are expensed as incurred. (Other intangible asset) Other intangible assets are initially measured at cost and principally amortized using the straight-line method over their estimated useful lives. Other intangible assets are mainly comprised of software for internal use whose estimated useful lives range from 3 to 5 years. The amortization method and useful lives of intangible assets are reviewed annually at each fiscal year end, and adjusted prospectively, if appropriate. (i) Lease At inception of a contract, Honda assesses whether a contract is, or contains, a lease. A contract is, or contains, a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. When Honda has the right to obtain substantially all of the economic benefits from use of the identified asset throughout the period of use and the right to direct the use of the identified asset, the contract conveys the right to control the use of the identified asset. 1) Lease as a lessee A right-of-use right-of-use non-lease non-lease non-lease The right-of-use right-of-use is The lease liability is initially measured at the present value of the lease payments that are not paid at the commencement date, discounted using the interest rate implicit in the lease or, if that rate cannot be readily determined, Honda’s incremental borrowing rate. Lease payments included in the measurement of the lease liability comprise mainly the fixed payments (including the lease payments in an optional renewal period if Honda is reasonably certain to exercise the extension option) and the penalties for termination of a lease unless Honda is reasonably certain not to terminate early. After the initial recognition, the lease liability is measured by increasing the carrying amount to reflect interest that produces a constant periodic rate of interest on the remaining balance of the lease liability and reducing the carrying amount to reflect the lease payments. The lease liability is remeasured if Honda changes its assessment of whether it will exercise an extension or termination option. When the lease liability is remeasured, the amount of the remeasurement of the lease liability is recognized as an adjustment to the right-of-use right-of-use 2) Lease as a lessor For a contract that is, or contains a lease, the lease is classified as a finance lease if it transfers substantially all the risks and rewards incidental to ownership of an underlying asset and the lease other than finance lease is classified as an operating lease. Honda assesses the lease classification of a sub-lease right-of-use The finance subsidiaries of the Company engage in the business of leasing vehicles as a lessor. A receivable from customer held under a finance lease is initially recognized at the amount of net investment in the lease which is the gross investment in the lease discounted at the interest rate implicit in the lease, and included in receivables from financial services in the consolidated statements of financial position. Vehicles subject to operating leases are presented as equipment on operating leases in the consolidated statements of financial position. If a contract contains lease and non-lease (j) Impairment 1) Financial assets measured at amortized cost and debt securities classified into financial assets measured at fair value through other comprehensive income The allowance for impairment losses of financial assets measured at amortized cost other than trade receivables and debt securities classified into financial assets measured at fair value through other comprehensive income is measured at amounts according to the three-stage expected credit loss (ECL) model: Stage 1 12-month Stage 2 Lifetime ECL for financial assets with a significant increase in credit risk since initial recognition but that are not credit-impaired Stage 3 Lifetime ECL for credit-impaired financial assets The allowance for impairment losses of trade receivables is continuously measured at amounts equal to lifetime ECL. Lifetime ECL represents ECL that results from all possible default events over 12-month Receivables from financial services – Allowance for credit losses The allowance for credit losses is management’s estimate of expected credit loss on receivables from financial services. To determine whether credit risk has increased significantly, consumer finance receivables are assessed both individually and collectively. Individual assessments are based on delinquencies. Consumer finance receivables 30 days or greater past due have historically experienced increased default rates and therefore are considered to have a significant increase in credit risk. Collective assessments are performed for groups of consumer finance receivables with shared risk characteristics such as the period of initial recognition, collateral type, original term, and credit score considering relative changes in expected default rates since initial recognition. Dealer finance receivables are assessed at the individual dealership level to determine whether credit risk has increased significantly considering payment performance and other factors such as changes in the financial condition of the dealership and compliance with debt covenants. Our definition of default on receivables from financial services varies depending on internal risk management practices of each of our finance subsidiaries. Our most significant finance subsidiary located in the United States considers delinquencies of 60 days past due to be in default. Collection efforts on consumer finance receivables are escalated after becoming 60 days past due including repossession of the underlying vehicles if it has been determined that the borrower is unable to perform on their obligations. Defaulted consumer finance receivables are considered to be credit-impaired. Dealer finance receivables are considered to be credit-impaired when there is evidence we will be unable to collect all amounts due in accordance with the original contractual terms including significant financial difficulty of the dealership, a breach of contract, such as a default or delinquency, or bankruptcy. At the finance subsidiary in the United States, the estimated uncollectible portion of consumer finance receivables are written-off written-off At the finance subsidiary in the United States, ECL of consumer finance receivables is measured for groups of financial assets with shared risk characteristics by reflecting historical results, current conditions and forward-looking factors such as unemployment rates, used vehicles prices, and consumer debt service burdens. 2) Non-financial At the end of the reporting period, the carrying amount of non-financial For investments accounted for using the equity method, the entire carrying amount of each investment in affiliates and joint ventures is tested for impairment as a single asset, when there is objective evidence that the investments accounted for using the equity method may be impaired. The recoverable amount of an individual asset or a cash-generating unit is the higher of fair value less costs to sell and value in use. Value in use is determined as the present value of future cash flows expected to be derived from an asset or a cash-generating unit. A cash-generating unit is determined as the smallest identifiable group of assets that generate cash inflows which are largely independent of cash inflows from other assets or a group of assets. When it is not possible to estimate the recoverable amount of the individual asset, the recoverable amount of the cash-generating unit to which the asset belongs is estimated. When the carrying amount of an asset or a cash-generating unit exceeds the recoverable amount, the carrying amount is reduced to the recoverable amount and an impairment loss is recognized in profit or loss. An impairment loss for a cash-generating unit is allocated to the assets on the basis of the relative carrying amount of each asset in the unit. An impairment loss recognized for an asset or a cash-generating unit in prior period is reversed, if there is any indication that the impairment loss may have decreased or may no longer exist, and when the recoverable amount of the asset exceeds the carrying amount. If this is the case, the carrying amount of the asset is increased to its recoverable amount, but the increased carrying amount does not exceed the carrying amount (net of depreciation or amortization) calculated on the basis that no impairment loss had occurred in the prior period. (k) Provisions Provisions are recognized when Honda has present legal or constructive obligation as a result of past events, it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation, and a reliable estimate can be made of the amount of the obligation. Provisions are measured based on the best estimate of expenditure required to settle the present obligation at the end of the reporting period. Where the effect of the time value of money is material, a provision is measured at the present value of the expenditures required to settle the obligation. In calculating the present value, a pre-tax (l) Employee Benefits 1) Short-term employee benefits For short-term employee benefits including salaries, bonuses and paid annual leave, when the employees render related services, the amounts expected to be paid in exchange for those services are recognized as expenses. 2) Post-employment benefits Honda has various post-employment benefit plans including defined benefit plans and defined contribution plans. Defined benefit plans For defined benefit plans, the present value of defined benefit obligations less the fair value of plan assets is recognized as either liability or asset in the consolidated statements of financial position. In the case that an entity has a surplus in a defined benefit plan, the recognized asset is limited to present value of any economic benefits available in the form of refunds from the plan or reductions in future contributions to the plan. The present value of defined benefit obligations and service cost are principally determined for each plan using the projected unit credit method. The discount rate is determined by reference to market yields at the end of the reporting period on high quality corporate bonds that are consistent with the currency and estimated term of the post-employment benefit obligation. Net interest on the net defined benefit liability (asset) for the reporting period is determined by multiplying the net defined benefit liability (asset) by the discount rate. Past service cost defined as the change in the present value of the defined benefit obligation resulting from a plan amendment or curtailment is recognized in profit or loss upon occurrence of the plan amendment or curtailment. Honda recognizes the difference arising from remeasurement of present value of the defined benefit Defined contribution plans For defined contribution plans, when the employees render related services, the contribution payables to defined contribution plan are recognized as expenses. (m) Equity 1) Common share Common share issued by the Company is classified as equity, and the proceeds from issuance of common share are included in common stock and capital surplus. 2) Treasury stock Treasury stock acquired by Honda is recognized at cost and deducted from equity. When treasury stock is sold, the consideration received is recognized as equity with the difference between the carrying amount and the consideration received included in capital surplus. (n) Revenue Recognition 1) Sale of products Sales of products are reported by Motorcycle business, Automobile business, Power products and other businesses. For details of the information on each business, see note 4. Honda recognizes revenue when control over products is transferred to customers. This transfer generally corresponds to the date of delivery of products to customers. Revenue is measured based on consideration specified in a contract with customer and excludes amounts collected on behalf of third parties. The total consideration in the contract is allocated to all products and services based on their stand-alone selling prices. The stand-alone selling prices are determined with reference to the selling prices of similar products or services and other reasonably available information. Honda provides dealer incentives, which generally represent discounts provided from Honda to the dealer. Honda also provides incentive programs generally in the form of below-market interest rate loans or lease programs for the retail customers to enhance dealer’s sales activities. The amount incurred for these programs is calculated based on the difference between the interest or lease rate offered to retail customers and the market-based interest or lease rate. These incentives are considered variable consideration when determining the transaction price and they are deducted from sales revenue recognized when products are sold to the dealers. Sales revenue is recognized only to the extent that it is highly probable that a significant reversal will not occur when the uncertainty associated with the variable consideration is subsequently resolved. Customers usually pay consideration for sales of products within 30 days from the transfers of control over the products to customers. In addition, product sales contracts with customers include warranty clauses to guarantee that the products comply with agreed-upon specifications and Honda recognizes provisions for product warranties to meet these guarantees. For more information on product warranties, see note 17. 2) Rendering of financial services Interest income from receivables from financial services is recognized using the effective interest method. Finance receivable origination fees and certain direct origination costs are included in the calculation of the effective interest rate, and the net fee or cost is amortized using the effective interest method over the contractual term of the finance receivables. The finance subsidiaries of the Company offer financial services that contain a lease. Interest income from receivables held under a finance lease is recognized using the effective interest method. When Honda is the manufacturer or dealer lessor, sales revenue and the corresponding cost for a portion identified as sale of products is recognized in profit or loss in accordance with the policy on revenue recognition for sale of products. Revenue from operating leases is recognized on a straight-line basis over the term of the lease. (o) Income Taxes Income tax expenses are presented as the aggregate amount of current taxes and deferred taxes. Current taxes and deferred taxes are recognized in profit or loss, except for the tax arising from a transaction which is recognized either in other comprehensive income or directly in equity. Current taxes are measured at the amount expected to be paid to (or recovered from) the taxation authorities in respect of the taxable profit (or tax loss) for the reporting period, using the tax rates and tax laws enacted or substantively enacted at the end of the reporting period. Deferred tax assets and liabilities are recognized for future tax consequences attributable to temporary differences between the carrying amount of assets or liabilities in the consolidated statements of financial position and the tax base of the assets or liabilities and carryforward of unused tax losses and tax credits. Deferred tax assets are recognized to the extent that it is probable that taxable profit will be available against which the deductible temporary differences, unused tax losses, and unused tax credits can be utilized. Deferred tax liabilities for taxable temporary differences related to investments in subsidiaries and affiliates, and interest in joint ventures are not recognized to the extent that Honda is able to control the timing of the reversal of the temporary differences and it is probable that they will not reverse in the foreseeable future. Deferred tax assets for deductible temporary differences arising from investments in subsidiaries and affiliates, and interest in joint ventures are recognized to the extent that it is probable that the temporary differences will reverse in the foreseeable future and taxable profit will be available against which they can be utilized. Deferred tax assets and liabilities are measured at the tax rates that are expected to apply in the period when the assets are realized or the liabilities are settled, based on the tax rates and tax laws enacted or substantively enacted at the end of the reporting period. The measurement of deferred tax assets and liabilities reflects the tax consequences that would follow from the manner in which Honda expects, at the end of reporting period, to recover or settle the carrying amount of its assets and liabilities. Honda reviews the carrying amount of deferred tax assets at the end of each reporting period, and reduces the carrying amo

Segment Information

Segment Information	12 Months Ended
Segment Information	Mar. 31, 2024
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Segment Information	(4) Segment Information Based on Honda’s organizational structure and characteristics of products and services, Honda discloses segment information in four categories: Reportable segments of Motorcycle business, Automobile business and Financial services business, and other segments that are not reportable. The other segments are combined and disclosed in Power products and other businesses. Segment information is based on the components of Honda for which separate financial information is available that is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and in assessing performance. The accounting policies used for segment information are consistent with the accounting policies used in the Company’s consolidated financial statements. P Segment Principal products and services Functions Motorcycle Business Motorcycles, all-terrain side-by-sides Research and development Automobile Business Automobiles and relevant parts Research and development Financial Services Business Financial services Retail loan and lease related to Power Products and Other Businesses Power products and relevant parts, and others Research and development (a) Seg me Segment information as of and for the years ended March 31, 2022, 2023 and 2024 is as follows: As of and for the year ended March 31, 2022 Yen (millions) Motorcycle Automobile Financial Power Segment Reconciling Consolidated Sales revenue: External customers ¥ 2,185,253 ¥ 9,147,498 ¥ 2,820,667 ¥ 399,278 ¥ 14,552,696 ¥ — ¥ 14,552,696 Intersegment — 213,095 2,656 22,480 238,231 (238,231 ) — Total 2,185,253 9,360,593 2,823,323 421,758 14,790,927 (238,231 ) 14,552,696 Segment profit (loss) ¥ 311,492 ¥ 236,207 ¥ 333,032 ¥ (9,499 ) ¥ 871,232 ¥ — ¥ 871,232 Share of profit of investments accounted for using the equity method ¥ 33,510 ¥ 168,415 ¥ — ¥ 587 ¥ 202,512 ¥ — ¥ 202,512 Segment assets 1,448,926 9,563,553 11,318,756 475,124 22,806,359 1,166,794 23,973,153 Investments accounted for using the equity method 104,535 855,309 — 7,560 967,404 — 967,404 Depreciation and amortization 65,423 510,755 883,712 17,018 1,476,908 — 1,476,908 Capital expenditures 49,203 410,169 2,028,700 15,748 2,503,820 — 2,503,820 Impairment losses on non-financial (23 ) 13,097 1,874 276 15,224 — 15,224 Provision (reversal) for credit and lease residual losses on receivables from financial services — — 9,282 — 9,282 — 9,282 As of and for the year ended March 31, 2023 Yen (millions) Motorcycle Automobile Financial Power Segment Reconciling Consolidated Sales revenue: External customers ¥ 2,908,983 ¥ 10,593,519 ¥ 2,954,098 ¥ 451,125 ¥ 16,907,725 ¥ — ¥ 16,907,725 Intersegment — 188,198 2,046 25,307 215,551 (215,551 ) — Total 2,908,983 10,781,717 2,956,144 476,432 17,123,276 (215,551 ) 16,907,725 Segment profit (loss) ¥ 488,709 ¥ (16,629 ) ¥ 285,857 ¥ 22,832 ¥ 780,769 ¥ — ¥ 780,769 Share of profit of investments accounted for using the equity method ¥ 49,119 ¥ 66,973 ¥ — ¥ 1,353 ¥ 117,445 ¥ — ¥ 117,445 Segment assets 1,580,521 10,082,519 11,197,017 480,166 23,340,223 1,329,844 24,670,067 Investments accounted for using the equity method 110,665 795,973 — 9,308 915,946 — 915,946 Depreciation and amortization 65,746 600,617 908,942 21,571 1,596,876 — 1,596,876 Capital expenditures 59,101 613,351 1,546,683 14,386 2,233,521 — 2,233,521 Impairment losses on non-financial 4,662 24,777 5,259 91 34,789 — 34,789 Provision (reversal) for credit and lease residual losses on receivables from financial services — — 27,018 — 27,018 — 27,018 As of and for the year ended March 31, 2024 Yen (millions) Motorcycle Automobile Financial Power Segment Reconciling Consolidated Sales revenue: External customers ¥ 3,220,168 ¥ 13,567,565 ¥ 3,248,808 ¥ 392,261 ¥ 20,428,802 ¥ — ¥ 20,428,802 Intersegment — 223,950 2,976 30,068 256,994 (256,994 ) — Total 3,220,168 13,791,515 3,251,784 422,329 20,685,796 (256,994 ) 20,428,802 Segment profit (loss) ¥ 556,232 ¥ 560,649 ¥ 273,978 ¥ (8,882 ) ¥ 1,381,977 ¥ — ¥ 1,381,977 Share of profit of investments accounted for using the equity method ¥ 53,843 ¥ 55,392 ¥ — ¥ 1,582 ¥ 110,817 ¥ — ¥ 110,817 Segment assets 2,047,270 11,690,446 14,118,371 585,301 28,441,388 1,332,762 29,774,150 Investments accounted for using the equity method 119,598 1,076,481 — 10,889 1,206,968 — 1,206,968 Depreciation and amortization 72,590 655,250 834,246 17,400 1,579,486 — 1,579,486 Capital expenditures 74,006 598,475 2,451,930 16,768 3,141,179 — 3,141,179 Impairment losses on non-financial assets 33 44,652 14,646 61 59,392 — 59,392 Provision (reversal) for credit and lease residual losses on receivables from financial services — — 50,057 — 50,057 — 50,057 Explanatory notes: 1. Segment profit (loss) of each segment is measured in a consistent manner with consolidated operating profit, which is profit before income taxes before share of profit of investments accounted for using the equity method and finance income and finance costs. Expenses not directly associated with specific segments are allocated based on the most reasonable measures applicable. 2. Segment assets of each segment are defined as total assets including investments accounted for using the equity method, derivatives, and deferred tax assets. Segment assets are based on those directly associated with each segment and those not directly associated with specific segments are allocated based on the most reasonable measures applicable except for the corporate assets described below. 3. Intersegment sales revenues are generally made at values that approximate arm’s-length 4. Reconciling items include elimination of intersegment transactions and balances as well as unallocated corporate assets. Unallocated corporate assets, included in reconciling items as of March 31, 2022, 2023 and 2024 amounted to ¥1,319,995 million, ¥1,462,656 million and ¥1,573,834 million, respectively, which consist primarily of the Company’s cash and cash equivalents and financial assets measured at fair value through other comprehensive income. 5. Provisions for product warranties accrued for the years ended March 31, 2022, 2023 and 2024 are ¥118,378 million, ¥289,850 million and ¥536,590 million, respectively. These are mainly included in Automobile business. 6. The amounts of write-down of inventories recognized as an expense for the years ended March 31, 2022, 2023 and 2024 are ¥11,295 million, ¥8,400 million and ¥12,220 million respectively. These are related to Automobile business and aircraft and aircraft engines, which are included in Power products and other businesses. 7. Right-of-use (b) Product or Service Groups Information Sales revenue by product or service groups of Honda for the years ended March 31, 2022, 2023 and 2024 is as follows: Yen (millions) 2022 2023 2024 Motorcycles, a ll-terrain side-by-sides ¥ 2,185,253 ¥ 2,908,983 ¥ 3,220,168 Automobiles and relevant parts 10,582,764 12,093,972 15,227,546 Financial services 1,385,401 1,453,645 1,588,827 Power products and relevant parts 294,577 360,385 292,563 Others 104,701 90,740 99,698 Total ¥ 14,552,696 ¥ 16,907,725 ¥ 20,428,802 (c) Geographical Information The sales revenue and carrying amounts of non-current As of and for the year ended March 31, 2022 Yen (millions) Japan United Other Total Sales revenue ¥ 2,354,532 ¥ 6,728,800 ¥ 5,469,364 ¥ 14,552,696 Non-current ¥ 3,036,832 ¥ 4,490,562 ¥ 1,768,697 ¥ 9,296,091 As of and for the year ended March 31, 2023 Yen (millions) Japan United Other Total Sales revenue ¥ 2,409,584 ¥ 7,905,936 ¥ 6,592,205 ¥ 16,907,725 Non-current ¥ 2,937,148 ¥ 4,373,329 ¥ 1,728,475 ¥ 9,038,952 As of and for the year ended March 31, 2024 Yen (millions) Japan United Other Total Sales revenue ¥ 2,634,505 ¥ 10,343,985 ¥ 7,450,312 ¥ 20,428,802 Non-current ¥ 3,054,330 ¥ 4,914,193 ¥ 1,822,125 ¥ 9,790,648

Cash and Cash Equivalents

Cash and Cash Equivalents	12 Months Ended
Cash and Cash Equivalents	Mar. 31, 2024
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Cash and Cash Equivalents	(5) Cash a n Cash and cash equivalents as of March 31, 2023 and 2024 consist of the following: Yen (millions) 2023 2024 Cash and deposits ¥ 2,822,949 ¥ 3,381,610 Cash equivalents 980,065 1,572,955 Total ¥ 3,803,014 ¥ 4,954,565 Cash equivalents held by Honda mainly consist of money market funds and certificates of deposit.

Trade Receivables

Trade Receivables	12 Months Ended
Trade Receivables	Mar. 31, 2024
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Trade Receivables	(6) Trade Receivables Trade receivables are classified as financial assets measured at amortized cost. Trade receivables as of March 31, 2023 and 2024 consist of the following: Yen (millions) 2023 2024 Trade accounts and notes receivable ¥ 900,312 ¥ 986,390 Other 168,579 262,102 Allowance for impairment losses (8,620 ) (8,402 ) Total ¥ 1,060,271 ¥ 1,240,090 The changes in the allowance for impairment losses on trade receivables for the years ended March 31, 2022, 2023 and 2024 are as follows: Yen (millions) 2022 2023 2024 Balance at beginning of year ¥ 10,521 ¥ 8,845 ¥ 8,620 Remeasurement ¥ 260 ¥ 297 ¥ 274 Write-offs (2,648 ) (757 ) (1,114 ) Exchange differences on translating foreign operations 712 235 622 Balance at end of year ¥ 8,845 ¥ 8,620 ¥ 8,402

Receivables from Financial Serv

Receivables from Financial Services	12 Months Ended
Receivables from Financial Services	Mar. 31, 2024
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Receivables from Financial Services	(7) Receivables from Financial Services The finance subsidiaries of the Company provide various financial services to customers and dealers in order to support the sale of products. These receivables from financial services are categorized as follows: Consumer finance receivables: Retail receivables primarily consist of receivables from installment contracts with customers. Finance lease receivables primarily consist of receivables from non-cancelable Dealer finance receivables: Wholesale receivables primarily consist of financing receivables from dealers for the purchase of inventories and dealer loans. Receivables from fin an Receivables from financial services as of March 31, 2023 and 2024 consist of the following: Yen (millions) 2023 2024 Consumer finance receivables: Retail ¥ 5,363,260 ¥ 7,330,459 Finance lease 174,256 230,139 Dealer finance receivables: Wholesale 421,166 707,035 Subtotal ¥ 5,958,682 ¥ 8,267,633 Allowance for credit losses ¥ (48,652 ) ¥ (68,999 ) Unearned interest income and fees (15,278 ) (23,364 ) Total ¥ 5,894,752 ¥ 8,175,270 Current assets ¥ 1,899,493 ¥ 2,558,594 Non-current 3,995,259 5,616,676 Total ¥ 5,894,752 ¥ 8,175,270 Finance lease receivables The lease payments receivable under the finance leases by maturity as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Within 1 year ¥ 32,525 ¥ 36,880 Between 1 and 2 years 33,924 42,831 Between 2 and 3 years 20,381 26,085 Between 3 and 4 years 13,497 18,064 Between 4 and 5 years 4,020 6,150 Later than 5 years 5,008 8,414 Undiscounted lease payments receivable ¥ 109,355 ¥ 138,424 Unearned finance income ¥ (8,417 ) ¥ (12,134 ) Unguaranteed residual value ¥ 58,040 ¥ 80,485 Net investment in the lease ¥ 158,978 ¥ 206,775 For the nature of the lessor’s leasing activities and the risk management strategy, see note 3(i) and (j). Allowance for credit losses The changes in the allowance for credit losses on receivables from financial services for the years ended March 31, 2022, 2023 and 2024 are as follows: For the years ended March 31, 2022, 2023 and 2024 Yen (millions) 12-month ECL Lifetime ECL Total Not credit-impaired Credit-impaired Retail: Balance as of April 1, 2021 ¥ 23,480 ¥ 5,923 ¥ 4,883 ¥ 34,286 Remeasurement ¥ (2,513 ) ¥ (925 ) ¥ 13,701 ¥ 10,263 Write-offs — — (12,256 ) (12,256 ) Exchange differences on translating foreign operations 2,822 516 1,136 4,474 Balance as of March 31, 2022 ¥ 23,789 ¥ 5,514 ¥ 7,464 ¥ 36,767 Remeasurement ¥ 868 ¥ 5,288 ¥ 20,673 ¥ 26,829 Write-offs — — (19,942 ) (19,942 ) Exchange differences on translating foreign operations 1,810 270 349 2,429 Balance as of March 31, 2023 ¥ 26,467 ¥ 11,072 ¥ 8,544 ¥ 46,083 Remeasurement ¥ 6,823 ¥ 1,732 ¥ 40,899 ¥ 49,454 Write-offs — — (36,663 ) (36,663 ) Exchange differences on translating foreign operations 3,849 1,474 1,282 6,605 Balance as of March 31, 2024 ¥ 37,139 ¥ 14,278 ¥ 14,062 ¥ 65,479 Finance lease: Balance as of April 1, 2021 ¥ 470 ¥ 184 ¥ 159 ¥ 813 Remeasurement ¥ (339 ) ¥ (98 ) ¥ 182 ¥ (255 ) Write-offs — — (97 ) (97 ) Exchange differences on translating foreign operations 8 6 12 26 Balance as of March 31, 2022 ¥ 139 ¥ 92 ¥ 256 ¥ 487 Remeasurement ¥ 49 ¥ (28 ) ¥ (24 ) ¥ (3 ) Write-offs — — (35 ) (35 ) Exchange differences on translating foreign operations 4 5 7 16 Balance as of March 31, 2023 ¥ 192 ¥ 69 ¥ 204 ¥ 465 Remeasurement ¥ 46 ¥ 15 ¥ 16 ¥ 77 Write-offs — — (43 ) (43 ) Exchange differences on translating foreign operations 17 10 29 56 Balance as of March 31, 2024 ¥ 255 ¥ 94 ¥ 206 ¥ 555 Yen (millions) 12-month ECL Lifetime ECL Total Not credit-impaired Credit-impaired Wholesale: Balance as of April 1, 2021 ¥ 1,741 ¥ 62 ¥ 464 ¥ 2,267 Remeasurement ¥ (649 ) ¥ (46 ) ¥ (31 ) ¥ (726 ) Write-offs — — 30 30 Exchange differences on translating foreign operations 84 1 153 238 Balance as of March 31, 2022 ¥ 1,176 ¥ 17 ¥ 616 ¥ 1,809 Remeasurement ¥ (263 ) ¥ (8 ) ¥ 463 ¥ 192 Write-offs — — 33 33 Exchange differences on translating foreign operations 63 1 6 70 Balance as of March 31, 2023 ¥ 976 ¥ 10 ¥ 1,118 ¥ 2,104 Remeasurement ¥ 377 ¥ 49 ¥ 100 ¥ 526 Write-offs — — 6 6 Exchange differences on translating foreign operations 149 3 177 329 Balance as of March 31, 2024 ¥ 1,502 ¥ 62 ¥ 1,401 ¥ 2,965 Total: Balance as of April 1, 2021 ¥ 25,691 ¥ 6,169 ¥ 5,506 ¥ 37,366 Remeasurement ¥ (3,501 ) ¥ (1,069 ) ¥ 13,852 ¥ 9,282 Write-offs — — (12,323 ) (12,323 ) Exchange differences on translating foreign operations 2,914 523 1,301 4,738 Balance as of March 31, 2022 ¥ 25,104 ¥ 5,623 ¥ 8,336 ¥ 39,063 Remeasurement ¥ 654 ¥ 5,252 ¥ 21,112 ¥ 27,018 Write-offs — — (19,944 ) (19,944 ) Exchange differences on translating foreign operations 1,877 276 362 2,515 Balance as of March 31, 2023 ¥ 27,635 ¥ 11,151 ¥ 9,866 ¥ 48,652 Remeasurement ¥ 7,246 ¥ 1,796 ¥ 41,015 ¥ 50,057 Write-offs — — (36,700 ) (36,700 ) Exchange differences on translating foreign operations 4,015 1,487 1,488 6,990 Balance as of March 31, 2024 ¥ 38,896 ¥ 14,434 ¥ 15,669 ¥ 68,999 For more information on allowance for credit losses, see note 25(c).

Other Financial Assets

Other Financial Assets	12 Months Ended
Other Financial Assets	Mar. 31, 2024
TextBlock1 [Abstract]
Other Financial Assets	(8) Other Financial Assets Other financial assets as of March 31, 2023 and 2024 consist of the following: Yen (millions) 2023 2024 Financial assets measured at amortized cost: Receivables other than trade receivables and receivables from financial services ¥ 164,503 ¥ 123,359 Debt securities 85,235 69,751 Guaranty deposits 12,689 13,662 Restricted cash 65,723 118,129 Other 4,167 4,422 Allowance for impairment losses (2,988 ) (2,748 ) Financial assets measured at fair value through other comprehensive income: Debt securities 26,555 30,567 Equity securities 475,138 522,703 Financial assets measured at fair value through profit or loss: Derivatives 185,968 194,187 Debt securities 101,972 123,693 Total ¥ 1,118,962 ¥ 1,197,725 Current assets ¥ 263,892 ¥ 229,583 Non-current 855,070 968,142 Total ¥ 1,118,962 ¥ 1,197,725 The changes in the allowance for impairment losses on other financial assets for the years ended March 31, 2022, 2023 and 2024 are as follows: Yen (millions) 2022 2023 2024 Balance at beginning of year ¥ 3,358 ¥ 3,212 ¥ 2,988 Remeasurement ¥ 42 ¥ 232 ¥ 97 Write-offs (191 ) (461 ) (345 ) Exchange differences on translating foreign operations 3 5 8 Balance at end of year ¥ 3,212 ¥ 2,988 ¥ 2,748 The allowance for impairment losses on other financial assets for the years ended March 31, 2022, 2023 and 2024 are mainly for credit-impaired financial assets. Major securities included in the equity securities designated as financial assets measured at fair value through other comprehensive income as of March 31, 2023 and 2024 are as follo ws: As of March 31, 2023 Yen (millions) Fair value Contemporary Amperex Technology Co., Ltd. ¥ 181,366 GM Cruise Holdings LLC 115,556 Stanley Electric Co., Ltd. 49,051 Mitsubishi UFJ Financial Group, Inc. 12,296 Tokio Marine Holdings, Inc. 8,349 Chubb Limited 7,998 As of March 31, 2024 Yen (millions) Fair value Contemporary Amperex Technology Co., Ltd. ¥ 163,986 GM Cruise Holdings LLC 65,802 Renesas Electronics Corporation 47,139 Stanley Electric Co., Ltd. 47,110 Mitsubishi UFJ Financial Group, Inc. 22,580 GS Yuasa Corporation 15,464

Inventories

Inventories	12 Months Ended
Inventories	Mar. 31, 2024
TextBlock1 [Abstract]
Inventories	(9) Inventories Inventories as of March 31, 2023 and 2024 consist of the following: Yen (millions) 2023 2024 Finished goods ¥ 1,154,926 ¥ 1,521,673 Work in process 95,041 93,412 Raw materials 917,217 827,884 Total ¥ 2,167,184 ¥ 2,442,969 The amounts of write-down of inventories recognized as an expense for the years ended March 31, 2022, 2023 and 2024 are ¥11,295 million, ¥8,400 million and ¥12,220 million, respectively.

Investments Accounted for Using

Investments Accounted for Using the Equity Method	12 Months Ended
Investments Accounted for Using the Equity Method	Mar. 31, 2024
TextBlock1 [Abstract]
Investments Accounted for Using the Equity Method	(10) Investments accounted for using the equity method Honda’s equity in affiliates and joint ventures as of March 31, 2023 and 2024 is as follows: Yen (millions) 2023 2024 Investments accounted for using the equity method: Affiliates ¥ 499,942 ¥ 715,901 Joint ventures 416,004 491,067 Total ¥ 915,946 ¥ 1,206,968 Honda’s equity of undistributed earnings: Affiliates ¥ 87,284 ¥ 111,787 Joint ventures 259,675 279,915 Total ¥ 346,959 ¥ 391,702 For the year ended March 31, 2023, for certain investments accounted for using the equity method with quoted market prices in active markets, the Company recognized impairment losses to the recoverable amounts based on the fair values because there was objective evidence of impairment due to declines in quoted market prices. Furthermore, for the year ended March 31, 2023, for certain investments accounted for using the equity method with no quoted market prices in active markets, the Company recognized impairment losses to the recoverable amounts based on the value in use because there was objective evidence of impairment where the transaction price in the share purchase agreement executed during the year ended March 31, 2023 was below the acquisition cost. For the year ended March 31, 2023, the Company recognized impairment losses of ¥68,545 million in total, which are included in share of profit of investments accounted for using the equity method in the consolidated statements of income and mainly included in Automobile business. For the year ended March 31, 2024, the Company did not recognize any significant Honda’s share of comprehensive income of affiliates and joint ventures for the years ended March 31, 2022, 2023 and 2024 is as follows: Yen (millions) 2022 2023 2024 Profit for the year: Affiliates ¥ (17,844 ) ¥ (81,504 ) ¥ 26,490 Joint ventures 220,356 198,949 84,327 Total ¥ 202,512 ¥ 117,445 ¥ 110,817 Other comprehensive income: Affiliates ¥ 26,673 ¥ 25,920 ¥ 31,797 Joint ventures 52,560 4,801 30,856 Total ¥ 79,233 ¥ 30,721 ¥ 62,653 Comprehensive income for the year: Affiliates ¥ 8,829 ¥ (55,584 ) ¥ 58,287 Joint ventures 272,916 203,750 115,183 Total ¥ 281,745 ¥ 148,166 ¥ 173,470 Investments accounted for using the equity method, Honda’s equity of undistributed earnings, profit for the year, other comprehensive income and comprehensive income for the year items include a joint venture that is material to the Company. (Material joint venture) Dongfeng Honda Automobile Co., Ltd. is a joint venture that is material to the Company. Dongfeng Honda Automobile Co., Ltd., located in Wuhan City, China, manufactures and sells automobile products. Honda and Dongfeng Motor Corporation each holds 50% equity stake in Dongfeng Honda Automobile Co., Ltd. Summarized consolidated financial information of Dongfeng Honda Automobile Co., Ltd. as of March 31, 2023 and 2024 is as follows: Yen (millions) 2023 2024 Current assets ¥ 615,524 ¥ 602,784 Non-current 279,691 361,830 Total assets 895,215 964,614 Current liabilities 520,257 552,719 Non-current 31,680 37,016 Total liabilities 551,937 589,735 Total equity ¥ 343,278 ¥ 374,879 Honda’s share of total equity (50%) 171,639 187,439 Equity method adjustments (636 ) (612 ) Carrying amount of its interest in the joint venture ¥ 171,003 ¥ 186,827 Cash and cash equivalents included in current assets ¥ 99,862 ¥ 163,009 Financial liabilities (excluding trade payables and provisions) included in current liabilities 6,803 6,549 Summarized consolidated financial information of Dongfeng Honda Automobile Co., Ltd. for the years ended March 31, 2022, 2023 and 2024 is as follows: Yen (millions) 2022 2023 2024 Sales revenue ¥ 1,994,534 ¥ 1,777,882 ¥ 1,816,390 Interest income 10,653 8,441 5,653 Depreciation and amortization 25,996 28,052 29,311 Income tax expense 60,868 52,826 8,207 Profit for the year 182,989 157,914 27,985 Other comprehensive income 44,812 3,256 24,398 Comprehensive income for the year ¥ 227,801 ¥ 161,170 ¥ 52,383 Comprehensive income for the year (50%) 113,901 80,585 26,192 Equity method adjustments 607 67 69 Honda’s share of comprehensive income for the year ¥ 114,508 ¥ 80,652 ¥ 26,261 Dividend from the joint venture to Honda ¥ 79,191 ¥ 86,506 ¥ 10,668 Combined financial information in respect of affiliates as of March 31, 2023 and 2024, and for the years ended March 31, 2022, 2023 and 2024 is as follows: Yen (millions) For the year ended March 31, 2022 Motorcycle Automobile Power Products Total Sales revenue ¥ 173,696 ¥ 3,120,190 ¥ 7,146 ¥ 3,301,032 Profit for the year 7,233 73,169 996 81,398 Yen (millions) As of and for the year ended March 31, 2023 Motorcycle Automobile Power Products Total Current assets ¥ 64,051 ¥ 1,746,374 ¥ 18,441 ¥ 1,828,866 Non-current 25,654 2,050,459 24,110 2,100,223 Total assets 89,705 3,796,833 42,551 3,929,089 Current liabilities 29,887 1,205,478 4,319 1,239,684 Non-current 3,109 539,040 655 542,804 Total liabilities 32,996 1,744,518 4,974 1,782,488 Total equity ¥ 56,709 ¥ 2,052,315 ¥ 37,577 ¥ 2,146,601 Sales revenue ¥ 189,332 ¥ 3,800,943 ¥ 9,187 ¥ 3,999,462 Profit for the year 10,038 (45,204 ) 1,901 (33,265 ) Yen (millions) As of and for the year ended March 31, 2024 Motorcycle Automobile Power Products Total Current assets ¥ 72,203 ¥ 1,988,023 ¥ 22,696 ¥ 2,082,922 Non-current 24,867 2,400,612 26,272 2,451,751 Total assets 97,070 4,388,635 48,968 4,534,673 Current liabilities 29,538 1,348,062 5,433 1,383,033 Non-current 3,542 701,643 685 705,870 Total liabilities 33,080 2,049,705 6,118 2,088,903 Total equity ¥ 63,990 ¥ 2,338,930 ¥ 42,850 ¥ 2,445,770 Sales revenue ¥ 178,964 ¥ 4,425,320 ¥ 10,335 ¥ 4,614,619 Profit for the year 12,744 38,348 2,193 53,285 Combined financial information in respect of joint ventures as of March 31, 2023 and 2024, and for the years ended March 31, 2022, 2023 and 2024 is as follows: Yen (millions) For the year ended March 31, 2022 Motorcycle Automobile Power Products Total Sales revenue ¥ 811,764 ¥ 4,612,394 ¥ 3,940 ¥ 5,428,098 Profit for the year 62,907 375,642 363 438,912 Yen (millions) As of and for the year ended March 31, 2023 Motorcycle Automobile Power Products Total Current assets ¥ 337,603 ¥ 1,579,996 ¥ 3,677 ¥ 1,921,276 Non-current 134,567 544,319 989 679,875 Total assets 472,170 2,124,315 4,666 2,601,151 Current liabilities 275,607 1,397,048 1,791 1,674,446 Non-current 23,272 74,136 2,184 99,592 Total liabilities 298,879 1,471,184 3,975 1,774,038 Total equity ¥ 173,291 ¥ 653,131 ¥ 691 ¥ 827,113 Sales revenue ¥ 1,071,031 ¥ 4,360,348 ¥ 6,022 ¥ 5,437,401 Profit for the year 93,766 304,119 1,779 399,664 Yen (millions) As of and for the year ended March 31, 2024 Motorcycle Automobile Power Products Total Current assets ¥ 376,630 ¥ 1,206,741 ¥ 3,852 ¥ 1,587,223 Non-current 201,692 682,236 880 884,808 Total assets 578,322 1,888,977 4,732 2,472,031 Current liabilities 320,335 1,026,763 1,875 1,348,973 Non-current 72,977 72,063 2,441 147,481 Total liabilities 393,312 1,098,826 4,316 1,496,454 Total equity ¥ 185,010 ¥ 790,151 ¥ 416 ¥ 975,577 Sales revenue ¥ 1,103,578 ¥ 4,003,276 ¥ 4,183 ¥ 5,111,037 Profit for the year 100,242 67,056 1,674 168,972 The amounts of a joint venture that i s m

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
Property, Plant and Equipment	Mar. 31, 2024
Equipment on operating leases [member]
Statement [LineItems]
Property, Plant and Equipment	(11) Equipment on Operating Leases Equipment on operating leases are mainly vehicles. The changes in cost, accumulated depreciat io , and are as follows: (Cost) Yen (millions) Balance as of April 1, 2022 ¥ 6,667,137 Additions ¥ 1,543,448 Sales or disposal (2,357,684 ) Exchange differences on translating foreign operations 414,052 Other — Balance as of March 31, 2023 ¥ 6,266,953 Additions ¥ 2,448,469 Sales or disposal (2,662,279 ) Exchange differences on translating foreign operations 625,564 Other — Balance as of March 31, 2024 ¥ 6,678,707 (Accumulated depreciation and impairment losses) Yen (millions) Balance as of April 1, 2022 ¥ (1,508,008 ) Depreciation ¥ (904,778 ) Sales or disposal 955,122 Exchange differences on translating foreign operations (77,740 ) Other (5,257 ) Balance as of March 31, 2023 ¥ (1,540,661 ) Depreciation ¥ (829,868 ) Sales or disposal 1,043,821 Exchange differences on translating foreign operations (134,587 ) Other (14,644 ) Balance as of March 31, 2024 ¥ (1,475,939 ) (Carrying amount) Yen (millions) Balance as of March 31, 2023 ¥ 4,726,292 Balance as of March 31, 2024 5,202,768 (Future lease payments) Future lease payments expected to be received under the operating leases by maturity as of March 31, 2023 and 2024 consist of the following: Yen (millions) 2023 2024 Within 1 year ¥ 737,110 ¥ 810,011 Between 1 and 2 years 458,830 614,883 Between 2 and 3 years 220,722 314,854 Between 3 and 4 years 78,727 108,572 Between 4 and 5 years 25,641 31,106 Later than 5 years 10,148 10,427 Total ¥ 1,531,178 ¥ 1,889,853 Future lease payments expected to be received as shown above should not necessarily be considered indicative of future cash collections. (Lease income) Operating leases income for the years ended March 31, 2023 and 2024 are ¥1,152,964 million and ¥1,141,819 million, respectively.
Property, plant and equipment [member]
Statement [LineItems]
Property, Plant and Equipment	(12) Property, Plant and Equipment The changes in cost, accumulated depreciation and impairment losses, and the carrying amounts of property, plant and equipment for the years ended March 31, 2023 and 2024 are as follows: (Cost) Yen (millions) Land Buildings and Machinery and Construction in Total Balance as of April 1, 2022 ¥ 645,472 ¥ 2,698,266 ¥ 6,147,929 ¥ 237,574 ¥ 9,729,241 Additions 10,366 35,335 87,630 444,732 578,063 Reclassification 4,198 47,021 476,942 (528,161 ) — Sales or disposal (9,980 ) (80,024 ) (297,580 ) — (387,584 ) Deconsolidation (3,580 ) (19,932 ) (82,733 ) (3,384 ) (109,629 ) Exchange differences on translating foreign operations 7,167 84,744 285,024 16,047 392,982 Other 275 (6,556 ) (1,572 ) (2,029 ) (9,882 ) Balance as of March 31, 2023 ¥ 653,918 ¥ 2,758,854 ¥ 6,615,640 ¥ 164,779 ¥ 10,193,191 Additions 8,328 35,397 113,006 325,741 482,472 Reclassification 8,129 74,106 199,180 (281,415 ) — Sales or disposal (4,078 ) (39,594 ) (285,196 ) — (328,868 ) Deconsolidation (7,346 ) (36,633 ) (109,783 ) (4,149 ) (157,911 ) Exchange differences on translating foreign operations 15,409 165,930 609,316 17,450 808,105 Other 202 (3,662 ) 13,886 (2,527 ) 7,899 Balance as of March 31, 2024 ¥ 674,562 ¥ 2,954,398 ¥ 7,156,049 ¥ 219,879 ¥ 11,004,888 (Accumulated depreciation and impairment losses) Yen (millions) Land Buildings and Machinery and Construction in Total Balance as of April 1, 2022 ¥ (22,919 ) ¥ (1,633,202 ) ¥ (4,992,710 ) ¥ (1,003 ) ¥ (6,649,834 ) Depreciation (6,025 ) (96,136 ) (410,340 ) — (512,501 ) Sales or disposal 6,090 72,290 274,535 — 352,915 Deconsolidation 2,580 18,743 80,882 3,384 105,589 Exchange differences on translating foreign operations (87 ) (48,748 ) (245,648 ) 126 (294,357 ) Other (2,863 ) (7,768 ) (12,857 ) (3,406 ) (26,894 ) Balance as of March 31, 2023 ¥ (23,224 ) ¥ (1,694,821 ) ¥ (5,306,138 ) ¥ (899 ) ¥ (7,025,082 ) Depreciation (6,086 ) (107,219 ) (450,649 ) — (563,954 ) Sales or disposal 3,002 31,498 260,947 — 295,447 Deconsolidation 1,425 24,264 89,502 331 115,522 Exchange differences on translating foreign operations (334 ) (98,578 ) (494,162 ) 1 (593,073 ) Other (225 ) (594 ) 1,318 166 665 Balance as of March 31, 2024 ¥ (25,442 ) ¥ (1,845,450 ) ¥ (5,899,182 ) ¥ (401 ) ¥ (7,770,475 ) (Carrying amount) Yen (millions) Land Buildings and Machinery and Construction in Total Balance as of March 31, 2023 ¥ 630,694 ¥ 1,064,033 ¥ 1,309,502 ¥ 163,880 ¥ 3,168,109 Balance as of March 31, 2024 649,120 1,108,948 1,256,867 219,478 3,234,413 For commitments for purchases of property, plant and equipment, see note 28. (Right-of-use Property, plant and equipment in the consolidated statements of financial position includes the right-of-use Honda leases mainly dealer’s stores, company housing and parking lots, under arrangements that often contain extension and termination options. Since lease contracts are managed at each company and individually negotiated, the lease contracts include various terms. Extension and termination options are included mainly in order to enhance operational flexibly of each company. The changes in the carrying amounts of the right-of-use Yen (millions) Land Buildings and Machinery and Total Balance as of April 1, 2022 ¥ 81,637 ¥ 130,181 ¥ 95,882 ¥ 307,700 Additions 10,386 30,294 43,474 84,154 Depreciation (6,025 ) (15,887 ) (51,193 ) (73,105 ) Other 370 (8,529 ) (2,245 ) (10,404 ) Balance as of March 31, 2023 ¥ 86,368 ¥ 136,059 ¥ 85,918 ¥ 308,345 Additions 7,887 28,103 58,496 94,486 Depreciation (6,086 ) (18,433 ) (53,389 ) (77,908 ) Other 3,017 (8,131 ) 3,202 (1,912 ) Balance as of March 31, 2024 ¥ 91,186 ¥ 137,598 ¥ 94,227 ¥ 323,011

Intangible Assets

Intangible Assets	12 Months Ended
Intangible Assets	Mar. 31, 2024
TextBlock1 [Abstract]
Intangible Assets	(13) Intangible Assets The changes in cost, accumulated amortization and impairment losses, and carrying amounts of intangible assets for the years ended March 31, 2023 and 2024 are as follows: (Cost) Yen (millions) Capitalized Software Other Total Balance as of April 1, 2022 ¥ 1,156,290 ¥ 462,251 ¥ 64,892 ¥ 1,683,433 Additions ¥ — ¥ 12,163 ¥ 35,103 ¥ 47,266 Internally developed 120,811 28,088 — 148,899 Sales or disposal (267,115 ) (5,107 ) (9,741 ) (281,963 ) Exchange differences on translating foreign operations 4,280 15,870 3,503 23,653 Other — 4,285 (336 ) 3,949 Balance as of March 31, 2023 ¥ 1,014,266 ¥ 517,550 ¥ 93,421 ¥ 1,625,237 Additions ¥ — ¥ 13,144 ¥ 41,165 ¥ 54,309 Internally developed 207,519 42,896 — 250,415 Sales or disposal (128,194 ) (16,228 ) (14,826 ) (159,248 ) Exchange differences on translating foreign operations 12,224 36,984 14,517 63,725 Other (4,254 ) 3,636 (3,648 ) (4,266 ) Balance as of March 31, 2024 ¥ 1,101,561 ¥ 597,982 ¥ 130,629 ¥ 1,830,172 (Accumulated amortization and impairment losses) Yen (millions) Capitalized Software Other Total Balance as of April 1, 2022 ¥ (462,641 ) ¥ (359,469 ) ¥ (11,816 ) ¥ (833,926 ) Amortization ¥ (149,659 ) ¥ (29,058 ) ¥ (880 ) ¥ (179,597 ) Sales or disposal 267,115 4,693 938 272,746 Exchange differences on translating foreign operations (719 ) (12,893 ) (758 ) (14,370 ) Other — (1,036 ) 1,846 810 Balance as of March 31, 2023 ¥ (345,904 ) ¥ (397,763 ) ¥ (10,670 ) ¥ (754,337 ) Amortization ¥ (154,780 ) ¥ (30,029 ) ¥ (855 ) ¥ (185,664 ) Sales or disposal 128,194 15,315 219 143,728 Exchange differences on translating foreign operations (1,935 ) (29,418 ) (1,656 ) (33,009 ) Other 2,055 (3,997 ) 741 (1,201 ) Balance as of March 31, 2024 ¥ (372,370 ) ¥ (445,892 ) ¥ (12,221 ) ¥ (830,483 ) (Carrying amount) Yen (millions) Capitalized Software Other Total Balance as of March 31, 2023 ¥ 668,362 ¥ 119,787 ¥ 82,751 ¥ 870,900 Balance as of March 31, 2024 729,191 152,090 118,408 999,689 Amortization of capitalized development costs is included in research and development, and amortization of other intangible assets is included in cost of sales, selling, general and administrative, and research and development in the consolidated statements of income. For commitments for purchases of intangible assets, see note 28.

Trade Payables

Trade Payables	12 Months Ended
Trade Payables	Mar. 31, 2024
TextBlock1 [Abstract]
Trade Payables	(14) Trade Payables Trade payables are classified as financial liabilities measured at amortized cost. Trade payables as of March 31, 2023 and 2024 consist of the following: Yen (millions) 2023 2024 Trade accounts and notes payable ¥ 1,181,893 ¥ 1,310,944 Other 244,440 298,892 Total ¥ 1,426,333 ¥ 1,609,836

Financing Liabilities

Financing Liabilities	12 Months Ended
Financing Liabilities	Mar. 31, 2024
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Financing Liabilities	(15) Financing Liabilities Financing liabilities are classified as financial liabilities measured at amortized cost. Financing liabilities presented in current liabilities as of March 31, 2023 and 2024 consist of the following: Yen (millions) 2023 2024 Current: Commercial paper ¥ 965,468 ¥ 959,620 Loans 358,874 387,093 Medium-term notes — 90,835 Asset-backed securities 41,433 79,299 Subtotal ¥ 1,365,775 ¥ 1,516,847 Reclassification from non-current ¥ 1,925,420 ¥ 2,588,743 Total ¥ 3,291,195 ¥ 4,105,590 The weighted average interest rates for financing liabilities presented in current liabilities (excluding reclassification from non-current 2023 2024 Weighted average interest rate 4.29 % 4.94 % Financing liabilities presented in non-current Yen (millions) 2023 2024 Non-current: Loans ¥ 958,836 ¥ 1,050,890 Medium-term notes 3,359,462 5,129,411 Corporate bonds 1,001,187 1,038,311 Asset-backed securities 979,908 1,428,098 Subtotal ¥ 6,299,393 ¥ 8,646,710 Reclassification to current liabilities (Current portion) ¥ (1,925,420 ) ¥ (2,588,743 ) Total ¥ 4,373,973 ¥ 6,057,967 The interest rate range and payment due date for financing liabilities presented in non-current 2023 2024 Loans Interest rate: 0.14% - 12.90% Due: 2023 - 2046 Interest rate: 0.14% - 13.06% Due: 2024 - 2046 Medium-term notes Interest rate: 0.30% - 5.88% Due: 2023 - 2031 Interest rate: 0.30% - 6.40% Due: 2024 - 2034 Corporate bonds Interest rate: 0.01% - 2.97% Due: 2023 - 2032 Interest rate: 0.03% - 2.97% Due: 2024 - 2032 Asset-backed securities Interest rate: 0.11% - 5.50% Due: 2023 - 2028 Interest rate: 0.11% - 5.94% Due: 2024 - 2028 (Pledged assets) Pledged assets for financing liabilities as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Trade receivables ¥ 20,811 ¥ 34,137 Receivables from financial services 944,414 1,520,521 Inventories — 4,117 Equipment on operating leases 133,936 86,455 Property, plant and equipment 2,293 2,491 Total ¥ 1,101,454 ¥ 1,647,721 Receivables from financial services and equipment on operating leases are pledged as collateral for liabilities related to asset-backed securities transactions. Other items are mainly pledged as collateral for secured bank loans. As is customary in Japan, bank loans are extended under general agreements which provide that security and guarantees for present and future indebtedness will be given upon request of the bank, and that the bank shall have the right to offset cash deposits against obligations that have become due or, in the event of default, against all obligations due to the bank. (Reconciliation of liabilities arising from financing activities) The changes in liabilities arising from financing activities for the years ended March 31, 2022, 2023 and 2024 are as follows: For the year ended March 31, 2022 Yen (millions) Balance Cash flows Cash flows Non-cash Balance Acquisitions Changes Changes Other Short-term financing liabilities ¥ 1,299,347 ¥ (472,420 ) ¥ — ¥ — ¥ 78,863 ¥ — ¥ 753 ¥ 906,543 Long-term financing liabilities 6,421,638 238,060 — — 526,822 — 9,493 7,196,013 Lease liabilities 317,429 (80,165 ) — 84,413 6,096 — (9,015 ) 318,758 Derivative financial liabilities (assets) * (33,883 ) 3,202 (1,296 ) — 3,217 67,396 — 38,636 Total ¥ 8,004,531 ¥ (311,323 ) ¥ (1,296 ) ¥ 84,413 ¥ 614,998 ¥ 67,396 ¥ 1,231 ¥ 8,459,950 For the year ended March 31, 2023 Yen (millions) Balance Cash flows Cash flows Non-cash Balance Acquisitions Changes Changes Other Short-term financing liabilities ¥ 906,543 ¥ 442,534 ¥ — ¥ — ¥ 27,055 ¥ — ¥ (10,357 ) ¥ 1,365,775 Long-term financing liabilities 7,196,013 (1,356,965 ) — — 459,754 — 591 6,299,393 Lease liabilities 318,758 (78,297 ) — 79,202 3,675 — (7,380 ) 315,958 Derivative financial liabilities (assets) * 38,636 (54,158 ) (8,641 ) — 3,718 85,721 — 65,276 Total ¥ 8,459,950 ¥ (1,046,886 ) ¥ (8,641 ) ¥ 79,202 ¥ 494,202 ¥ 85,721 ¥ (17,146) ¥ 8,046,402 For the year ended March 31, 2024 Yen (millions) Balance Cash Cash flows Non-cash Balance Acquisitions Changes Changes Other Short-term financing liabilities ¥ 1,365,775 ¥ (24,382 ) ¥ — ¥ — ¥ 177,888 ¥ — ¥ (2,434 ) ¥ 1,516,847 Long-term financing liabilities 6,299,393 1,593,898 — — 751,082 — 2,337 8,646,710 Lease liabilities 315,958 (80,513 ) — 92,612 9,509 — (5,160 ) 332,406 Derivative financial liabilities (assets) * 65,276 4,983 (36,665) — 11,112 (32,957 ) — 11,749 Total ¥ 8,046,402 ¥ 1,493,986 ¥ (36,665 ) ¥ 92,612 ¥ 949,591 ¥ (32,957 ) ¥ (5,257) ¥ 10,507,712 Explanatory note: * Derivative financial liabilities (assets) are held by the Company and its finance subsidiaries to hedge foreign currency risk for principals and interests payment of long-term financing liabilities. The cash flows related to repayments of principals are included in cash flows from financing activities, while the cash flows related to interest paid are included in cash flows from operating activities.

Other Financial Liabilities

Other Financial Liabilities	12 Months Ended
Other Financial Liabilities	Mar. 31, 2024
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Other Financial Liabilities	(16) Other Financial Liabilities Other financial liabilities as of March 31, 2023 and 2024 consist of the following: Yen (millions) 2023 2024 Financial liabilities measured at amortized cost ¥ 53,920 ¥ 88,779 Financial liabilities measured at fair value through profit or loss: Derivatives 242,968 236,592 Lease liabilities 315,958 332,406 Total ¥ 612,846 ¥ 657,777 Current liabilities ¥ 324,110 ¥ 340,858 Non-current 288,736 316,919 Total ¥ 612,846 ¥ 657,777

Provisions

Provisions	12 Months Ended
Provisions	Mar. 31, 2024
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Provisions	(17) Provisions The components of and changes in provisions for the year ended March 31, 2024 are as follows: Yen (millions) Product Other Total Balance as of April 1, 2023 ¥ 535,099 ¥ 97,771 ¥ 632,870 Provision ¥ 536,590 ¥ 56,590 ¥ 593,180 Write-offs (221,054 ) (24,022 ) (245,076 ) Reversal (88,266 ) (5,981 ) (94,247 ) Exchange differences on translating foreign operations 52,821 12,175 64,996 Balance as of March 31, 2024 ¥ 815,190 ¥ 136,533 ¥ 951,723 Current liabilities and non-current Yen (millions) 2023 2024 Current liabilities ¥ 362,701 ¥ 566,722 Non-current 270,169 385,001 Total ¥ 632,870 ¥ 951,723 Explanatory note: * Honda recognizes provisions for product warranties to cover future product warranty expenses. Honda recognizes costs for general warranties on products Honda sells and for specific warranty programs, including product recalls. Honda recognizes general estimated warranty costs at the time products are sold to customers. Honda also recognizes specific estimated warranty program costs when it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation, and a reliable estimate can be made of the amount of the obligation. These provisions are estimated based on historical warranty claim experience with consideration given to the expected level of future warranty costs, including current sales trends, the expected number of units to be affected and the estimated average repair cost per unit for warranty claims. Provisions for product warranties are utilized for expenditures based on the demand from customers and dealers. A portion of the product warranties is expected to be reimbursed by agreement with suppliers. The amount of expected reimbursement is ¥167,920 million as of March 31, 2024.

Employee Benefits

Employee Benefits	12 Months Ended
Employee Benefits	Mar. 31, 2024
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Employee Benefits	(18) Employee Benefits (a) Post-employment Benefits Honda has various pension plans covering substantially all of its employees in Japan and certain employees in foreign countries. The Company and its Japanese subsidiaries provide plans similar to a cash balance pension plan or other defined benefit pension plans in accordance with the Defined-Benefit Corporate Pension Act of Japan. The Company and some of its subsidiaries have retirement pension benefit plans as well as lump-sum The Company’s pension plans are administered by the Honda Pension Fund (the Fund) which is legally independent of the Company. The Director of the Fund has the fiduciary duty to comply with laws, the directives by the Minister of Health, Labour and Welfare, and the Director-Generals of Regional Bureaus of Health and Welfare made pursuant to those laws, and the by-laws 1) Defined benefit obligations and plan assets The changes in present value of defined benefit obligations and fair value of plan assets of the Company and certain of its consolidated subsidiaries for the years ended March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Japanese plans Foreign plans Japanese plans Foreign plans Present value of defined benefit obligations: Balance at beginning of year ¥ 1,262,245 ¥ 1,087,526 ¥ 1,160,727 ¥ 925,961 Current service cost 30,632 22,555 27,397 17,702 Past service cost — — — (271 ) Interest cost 9,732 40,151 13,944 47,108 Plan participants’ contributions — 4,165 — 4,447 Remeasurements: Changes in demographic assumptions (3,387 ) (317 ) (4,249 ) (724 ) Changes in financial assumptions (71,936 ) (220,863 ) (44,232 ) (14,686 ) Other 12,291 38,427 (91 ) (1,446 ) Benefits paid (63,085 ) (116,150 ) (59,464 ) (66,563 ) Deconsolidation (15,765 ) — (12,640 ) — Exchange differences on translating foreign operations — 70,467 — 125,595 Balance at end of year ¥ 1,160,727 ¥ 925,961 ¥ 1,081,392 ¥ 1,037,123 Fair value of plan assets: Balance at beginning of year ¥ 1,355,276 ¥ 1,013,050 ¥ 1,236,755 ¥ 879,975 Interest income 10,589 37,211 15,030 45,291 Actual return on plan assets, excluding interest income (76,690 ) (137,659 ) 43,828 (6,964 ) Employer contributions 20,409 21,178 20,108 16,819 Plan participants’ contributions — 4,165 — 4,447 Benefits paid (58,544 ) (116,150 ) (54,727 ) (66,563 ) Deconsolidation (14,285 ) — (13,935 ) — Exchange differences on translating foreign operations — 58,180 — 120,396 Balance at end of year ¥ 1,236,755 ¥ 879,975 ¥ 1,247,059 ¥ 993,401 Effects of asset ceiling — 62,516 123,505 86,321 Net defined benefit liabilities (assets) ¥ (76,028 ) ¥ 108,502 ¥ (42,162 ) ¥ 130,043 Retirement benefit assets included in net defined benefit liabilities (assets) as of March 31, 2023 and 2024 are ¥180,700 million and ¥148,296 million, respectively, which are presented in other non-current 2) Fair value of plan assets Honda’s investment policies for the Japanese and foreign pension plan assets are designed to maximize total medium-to-long medium-to-long The fair value of the Japanese and foreign pension plan assets by asset category as of March 31, 2023 and 2024 is as follows: As of March 31, 2023 Yen (millions) Japanese plans Foreign plans Market price in active Market price in active Quoted Unquoted Total Quoted Unquoted Total Cash and cash equivalents ¥ 20,230 ¥ — ¥ 20,230 ¥ 6,929 ¥ — ¥ 6,929 Equity securities: Japan 22,388 — 22,388 398 — 398 United States 195,611 — 195,611 13,794 — 13,794 Other 171,921 153 172,074 7,413 — 7,413 Debt securities: Japan 66,416 862 67,278 — 768 768 United States 35,338 136,352 171,690 — 114,757 114,757 Other 152,213 89,536 241,749 — 10,656 10,656 Group annuity insurance: General accounts — 40,942 40,942 — — — Separate accounts — 23,130 23,130 — — — Pooled funds: Real estate funds — 398 398 — 73,017 73,017 Private equity funds — — — — 162,414 162,414 Hedge funds — 117,422 117,422 — 26,061 26,061 Commingled and other mutual funds 1,419 151,752 153,171 — 454,352 454,352 Other 54 10,618 10,672 263 9,153 9,416 Total ¥ 665,590 ¥ 571,165 ¥ 1,236,755 ¥ 28,797 ¥ 851,178 ¥ 879,975 As of March 31, 2024 Yen (millions) Japanese plans Foreign plans Market price in active Market price in active Quoted Unquoted Total Quoted Unquoted Total Cash and cash equivalents ¥ 14,251 ¥ — ¥ 14,251 ¥ 8,946 ¥ — ¥ 8,946 Equity securities: Japan 25,610 — 25,610 403 — 403 United States 211,349 — 211,349 12,308 — 12,308 Other 176,452 127 176,579 6,764 — 6,764 Debt securities: Japan 53,981 1,042 55,023 — 414 414 United States 149,531 16,055 165,586 — 161,319 161,319 Other 141,011 114,569 255,580 — 12,650 12,650 Group annuity insurance: General accounts — 39,329 39,329 — — — Separate accounts — 29,350 29,350 — — — Pooled funds: Real estate funds — 204 204 — 78,832 78,832 Private equity funds — — — — 171,660 171,660 Hedge funds — 134,096 134,096 — 31,495 31,495 Commingled and other mutual funds 1,289 152,466 153,755 — 464,649 464,649 Other 19 (13,672 ) (13,653 ) 424 43,537 43,961 Total ¥ 773,493 ¥ 473,566 ¥ 1,247,059 ¥ 28,845 ¥ 964,556 ¥ 993,401 3) Actuarial assumptions The significant actuarial assumptions used to determine the present value of defined benefit obligations as of March 31, 2023 and 2024 are as follows: 2023 2024 Japanese plans Foreign plans Japanese plans Foreign plans Discount rate 1.2 % 4.8 - 5.1 % 1.6 % 4.9 - 5.2 % Rate of salary increase 1.6 % 2.0 - 4.4 % 1.6 % 2.0 - 7.5 % 4) Sensitivity analysis The effects on defined benefit obligations of 0.5% increase or decrease in the discount rate as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Japanese plans Foreign plans Japanese plans Foreign plans 0.5% decrease ¥ 80,821 increase ¥ 57,236 increase ¥ 70,025 increase ¥ 67,928 increase 0.5% increase ¥ 72,450 decrease ¥ 50,643 decrease ¥ 63,047 decrease ¥ 59,881 decrease This sensitivity analysis shows changes in defined benefit obligations as of March 31, 2023 and 2024, as a result of changes in actuarial assumptions that the Company can reasonably assume. This analysis is based on provisional calculations, and thus actual results may differ from the analysis. In addition, changes in the rate of salary increase are not expected. 5) Cash flows The amount of contributions to plan assets made by the Company and certain of its consolidated subsidiaries is determined based on various factors such as the level of salary and service years of employees, status of plan asset reserve, and actuarial calculations. In accordance with the provisions of the Defined Benefit Corporate Pension Act, the Honda Pension Fund also recalculates the amount of contributions every five years at the end of the reporting period as a base date, in an effort to ensure balanced finances in the future. The Company and certain of its consolidated subsidiaries may make contributions of a necessary amount if the amount of reserve falls below the minimum base amount. The Company and certain of its consolidated subsidiaries expect to contribute ¥19,970 million to its Japanese pension plans and ¥18,282 million to its foreign pension plans in the year ending March 31, 2025. The weighted average duration of defined benefit obligations as of March 31, 2023 and 2024 are as follows: 2023 2024 Japanese plans Foreign plans Japanese plans Foreign plans Weighted average duration of defined benefit obligations 13 years 11 years 12 years 11 years (b) Personnel Expenses Personnel expenses included in the consolidated statements of income for the years ended March 31, 2022, 2023 and 2024 are as follows: Yen (millions) 2022 2023 2024 Personnel expenses ¥ 1,502,364 ¥ 1,635,515 ¥ 1,807,731 Personnel expenses include salaries, bonuses, social security expenses and expenses relating to post-employment benefits.

Equity

Equity	12 Months Ended
Equity	Mar. 31, 2024
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Equity	(19) Equity (a) Management of Capital Honda makes investments in capital and research and development to improve corporate value through growth on a global basis. In order to meet these funding needs, Honda makes capital management through consideration of the balance between financing liabilities and equity. Financing liabilities and equity of Honda as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Financing liabilities ¥ 7,665,168 ¥ 10,163,557 Equity 11,502,291 13,005,872 (b) Common Stock The Company’s total number of shares authorized and issued for the years ended March 31, 2022, 2023 and 2024 are as follows: Shares 2022 2023 2024 Total number of authorized shares Balance at end of year Common shares, no par value 7,086,000,000 7,086,000,000 7,086,000,000 Total number of issued shares Balance at beginning of year 1,811,428,430 1,811,428,430 1,811,428,430 Changes during the year* — — 3,468,571,570 Balance at end of year 1,811,428,430 1,811,428,430 5,280,000,000 Explanatory notes: 1 As of the effective date of October 1, 2023, the Company implemented a three-for-one stock split of its common stock to shareholders as of the record date of September 30, 2023. 2 As of February 29, 2024, the Company cancelled 154,285,290 shares of its treasury stock based on the resolution of the Board of Directors Meeting on February 8, 2024. All of the issued shares as of March 31, 2022, 2023 and 2024 have been paid in full. (c) Capital Surplus and Retained Earnings Capital surplus consists of surplus that is derived from equity transactions and not recorded in common stock, and its primary component is capital reserves. The Companies Act of Japan provides that no less than 50% of the paid-in Retained earnings consist of legal reserves and accumulated earnings. The Companies Act of Japan provides that earnings in an amount equal to 10% of cash dividends from retained earnings shall be appropriated as a capital reserve or a legal reserve on the date of distribution of retained earnings until an aggregated amount of capital reserve and legal reserve equals 25% of common stock. Legal reserves may be used upon approval of the General Meeting of Shareholders. Certain foreign consolidated subsidiaries are also required to appropriate their earnings under the laws of respective countries. (d) Treasury Stock The total number of the Company’s treasury stock held by Honda as of March 31, 2022, 2023 and 2024 is as follows: Shares 2022 2023 2024 Common shares 100,828,074 147,087,841 451,092,624 Under the Companies Act of Japan, the number of shares and total value of treasury stock acquisition may be determined, upon approval of the General Meeting of Shareholders, within the amount available for distribution. Furthermore, treasury stock may be acquired through market transactions or tender offers in accordance with the articles of incorporation within the conditions set forth in the Companies Act, upon approval of the Board of Directors. (e) Other Components of Equity The changes in other components of equity for the years ended March 31, 2022, 2023 and 2024 are as follows: Yen (millions) Remeasurements of Net changes in revaluation of Exchange differences Total Balance as of April 1, 2021 ¥ — ¥ 88,570 ¥ 108,140 ¥ 196,710 Adjustment during the year ¥ 117,489 ¥ 58,863 ¥ 736,578 ¥ 912,930 Reclassification to retained earnings (117,489 ) (1,713 ) — (119,202 ) Balance as of March 31, 2022 ¥ — ¥ 145,720 ¥ 844,718 ¥ 990,438 Adjustment during the year ¥ 3,304 ¥ (19,030 ) ¥ 445,739 ¥ 430,013 Reclassification to retained earnings (3,304 ) 250 — (3,054 ) Balance as of March 31, 2023 ¥ — ¥ 126,940 ¥ 1,290,457 ¥ 1,417,397 Adjustment during the year ¥ (18,194 ) ¥ (17,924 ) ¥ 913,456 ¥ 877,338 Reclassification to retained earnings 18,194 (479 ) — 17,715 Balance as of March 31, 2024 ¥ — ¥ 108,537 ¥ 2,203,913 ¥ 2,312,450 (f) Other Comprehensive Income Each component of other comprehensive income and related tax effect including non-controlling For the year ended March 31, 2022 Yen (millions) Before-tax Tax benefit Net-of-tax Items that will not be reclassified to profit or loss: Remeasurements of defined benefit plans: Amount incurred during the year ¥ 153,785 ¥ (36,743 ) ¥ 117,042 Net changes 153,785 (36,743 ) 117,042 Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year 76,909 (18,274 ) 58,635 Net changes 76,909 (18,274 ) 58,635 Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 1,862 (76 ) 1,786 Net changes 1,862 (76 ) 1,786 Items that may be reclassified subsequently to profit or loss: Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year (915 ) 203 (712 ) Reclassification to profit or loss 39 (9 ) 30 Net changes (876 ) 194 (682 ) Exchange differences on translating foreign operations: Amount incurred during the year 680,724 — 680,724 Reclassification to profit or loss — — — Net changes 680,724 — 680,724 Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 79,484 (1,972 ) 77,512 Reclassification to profit or loss (65 ) — (65 ) Net changes 79,419 (1,972 ) 77,447 Total other comprehensive income ¥ 991,823 ¥ (56,871 ) ¥ 934,952 For the year ended March 31, 2023 Yen (millions) Before-tax Tax benefit Net-of-tax Items that will not be reclassified to profit or loss: Remeasurements of defined benefit plans: Amount incurred during the year ¥ 7,192 ¥ (3,842 ) ¥ 3,350 Net changes 7,192 (3,842 ) 3,350 Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year (26,279 ) 7,814 (18,465 ) Net changes (26,279 ) 7,814 (18,465 ) Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 294 (2 ) 292 Net changes 294 (2 ) 292 Items that may be reclassified subsequently to profit or loss: Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year (444 ) 98 (346 ) Reclassification to profit or loss (166 ) 38 (128 ) Net changes (610 ) 136 (474 ) Exchange differences on translating foreign operations: Amount incurred during the year 427,650 (1,612 ) 426,038 Reclassification to profit or loss (4,690 ) 1,612 (3,078 ) Net changes 422,960 — 422,960 Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 32,436 (1,905 ) 30,531 Reclassification to profit or loss (102 ) — (102 ) Net changes 32,334 (1,905 ) 30,429 Total other comprehensive income ¥ 435,891 ¥ 2,201 ¥ 438,092 For the year ended March 31, 2024 Yen (millions) Before-tax Tax benefit Net-of-tax Items that will not be reclassified to profit or loss: Remeasurements of defined benefit plans: Amount incurred during the year ¥ (30,696 ) ¥ 11,765 ¥ (18,931 ) Net changes (30,696 ) 11,765 (18,931 ) Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year (27,034 ) 1,565 (25,469 ) Net changes (27,034 ) 1,565 (25,469 ) Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 8,976 (676 ) 8,300 Net changes 8,976 (676 ) 8,300 Items that may be reclassified subsequently to profit or loss: Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year 149 (83 ) 66 Reclassification to profit or loss (78 ) 68 (10 ) Net changes 71 (15 ) 56 Exchange differences on translating foreign operations: Amount incurred during the year 880,235 (2,727 ) 877,508 Reclassification to profit or loss (5,185 ) 2,727 (2,458 ) Net changes 875,050 — 875,050 Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 57,139 (2,850 ) 54,289 Reclassification to profit or loss 64 — 64 Net changes 57,203 (2,850 ) 54,353 Total other comprehensive income ¥ 883,570 ¥ 9,789 ¥ 893,359 The components of other comprehensive income included in non-controlling Yen (millions) 2022 2023 2024 Items that will not be reclassified to profit or loss: Remeasurements of defined benefit plans ¥ 565 ¥ 341 ¥ 186 Net changes in revaluation of financial assets measured at fair value through other comprehensive income (136 ) 88 6 Items that may be reclassified subsequently to profit or loss: Exchange differences on translating foreign operations 21,593 7,650 18,893 Total ¥ 22,022 ¥ 8,079 ¥ 19,085 (g) Dividends from Retained Earnings The Company distributes retained earnings within the available amount calculated in accordance with the Companies Act of Japan. The amount of retained earnings available for distribution is calculated based on the amount of retained earnings recorded in the Company’s non-consolidated The amounts recognized as dividends of retained earnings for the years ended March 31, 2022, 2023 and 2024 are as follows: 1) Dividend payout For the year ended March 31, 2022 Resolution The Board of Directors Meeting on May 14, 2021 Type of shares Common shares Total amount of dividends (millions of yen) 93,272 Dividend per share (yen) 54.00 Record date March 31, 2021 Effective date June 7, 2021 Resolution The Board of Directors Meeting on November 5, 2021 Type of shares Common shares Total amount of dividends (millions of yen) 95,130 Dividend per share (yen) 55.00 Record date September 30, 2021 Effective date December 1, 2021 For the year ended March 31, 2023 Resolution The Board of Directors Meeting on May 13, 2022 Type of shares Common shares Total amount of dividends (millions of yen) 111,256 Dividend per share (yen) 65.00 Record date March 31, 2022 Effective date June 6, 2022 Resolution The Board of Directors Meeting on November 9, 2022 Type of shares Common shares Total amount of dividends (millions of yen) 102,219 Dividend per share (yen) 60.00 Record date September 30, 2022 Effective date December 5, 2022 For the year ended March 31, 2024 Resolution The Board of Directors Meeting on May 11, 2023 Type of shares Common shares Total amount of dividends (millions of yen) 99,915 Dividend per share (yen) 60.00 Record date March 31, 2023 Effective date June 6, 2023 Resolution The Board of Directors Meeting on November 9, 2023 Type of shares Common shares Total amount of dividends (millions of yen) 141,949 Dividend per share (yen) 87.00 Record date September 30, 2023 Effective date December 5, 2023 2) Dividends payable of which record date was in the year ended March 31, 2024, effective after the period Resolution The Board of Directors Meeting on May 10, 2024 Type of shares Common shares Resource for dividend Retained earnings Total amount of dividends (millions of yen) 188,418 Dividend per share (yen) 39.00 Record date March 31, 2024 Effective date June 4, 2024 Explanatory note: * As of the effective date of October 1, 2023, the Company implemented a three-for-one stock split of its common stock to shareholders as of the record date of September 30, 2023. Dividend per share based on the resolution of the Board of Directors Meeting on May 10, 2024 is an amount after the stock split.

Sales Revenue

Sales Revenue	12 Months Ended
Sales Revenue	Mar. 31, 2024
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Sales Revenue	(20) Sales Revenue (a) Disaggregation of revenue As stated in Note 4, Honda discloses segment information in four categories. The sales revenue disaggregated by geographical markets based on the location of the customer and the reconciliation of the disaggregated sales revenue with each segment for the years ended March 31, 2022, 2023 and 2024 are as follows: For the year ended March 31, 2022 Yen (millions) Motorcycle Automobile Financial Power Total Revenue arising from contracts with customers Japan ¥ 105,022 ¥ 1,337,860 ¥ 146,185 ¥ 79,182 ¥ 1,668,249 North America 230,766 4,877,900 1,289,076 152,096 6,549,838 Europe 202,254 319,340 — 79,393 600,987 Asia 1,307,915 2,314,425 37 63,861 3,686,238 Other Regions 337,219 280,702 — 24,305 642,226 Total ¥ 2,183,176 ¥ 9,130,227 ¥ 1,435,298 ¥ 398,837 ¥ 13,147,538 Revenue arising from the other sources* 2,077 17,271 1,385,369 441 1,405,158 Total ¥ 2,185,253 ¥ 9,147,498 ¥ 2,820,667 ¥ 399,278 ¥ 14,552,696 For the year ended March 31, 2023 Yen (millions) Motorcycle Automobile Financial Power Total Revenue arising from contracts with customers Japan ¥ 109,393 ¥ 1,375,593 ¥ 158,653 ¥ 89,627 ¥ 1,733,266 North America 306,725 5,985,958 1,341,863 182,126 7,816,672 Europe 250,088 332,928 — 94,328 677,344 Asia 1,739,330 2,523,613 29 55,354 4,318,326 Other Regions 502,917 360,299 — 29,464 892,680 Total ¥ 2,908,453 ¥ 10,578,391 ¥ 1,500,545 ¥ 450,899 ¥ 15,438,288 Revenue arising from the other sources* 530 15,128 1,453,553 226 1,469,437 Total ¥ 2,908,983 ¥ 10,593,519 ¥ 2,954,098 ¥ 451,125 ¥ 16,907,725 For the year ended March 31, 2024 Yen (millions) Motorcycle Automobile Financial Power Total Revenue arising from contracts with customers Japan ¥ 113,746 ¥ 1,586,358 ¥ 172,072 ¥ 87,072 ¥ 1,959,248 North America 335,545 8,503,602 1,487,948 138,760 10,465,855 Europe 351,850 506,731 — 84,459 943,040 Asia 1,792,327 2,446,250 5 55,898 4,294,480 Other Regions 625,585 498,506 — 26,001 1,150,092 Total ¥ 3,219,053 ¥ 13,541,447 ¥ 1,660,025 ¥ 392,190 ¥ 18,812,715 Revenue arising from the other sources* 1,115 26,118 1,588,783 71 1,616,087 Total ¥ 3,220,168 ¥ 13,567,565 ¥ 3,248,808 ¥ 392,261 ¥ 20,428,802 Explanatory note: * Revenue arising from the other sources primarily includes lease revenues recognized under IFRS 16 and interest recognized under IFRS 9. (b) Contract balances The receivables from contracts with customers and contract liabilities for the years ended March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Receivables from contracts with customers: Trade receivables ¥ 893,559 ¥ 982,118 Contract liabilities: Other current liabilities 292,552 401,855 Other noncurrent liabilities 240,556 306,170 The amounts of revenue recognized for the years ended March 31, 2022, 2023 and 2024 that were included in the contract liability balances at the beginning of the year are ¥199,902 million, ¥219,873 million and ¥273,224 million, respectively. The amounts of revenue recognized for the years ended March 31, 2022, 2023 and 2024 from performance obligations satisfied (or partially satisfied) in previous years were immaterial. In addition, the balances of contract assets were immaterial. (c) Transaction price allocated to the remaining performance obligation The revenue expected to be recognized in the future related to performance obligations that are unsatisfied (or partially unsatisfied) as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Within 1 year ¥ 150,507 ¥ 230,865 Between 1 and 5 years 280,981 355,882 Later than 5 years 14,892 22,198 Total ¥ 446,380 ¥ 608,945 The table does not include the remaining performance obligations that have original expected durations of one year or less and estimated amounts of variable consideration that are constrained from being recognized as revenue. (d) Assets recognized from the costs to obtain or fulfill a contract with a customer The assets recognized from the costs to obtain a contract with a customer as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Assets recognized from the costs to obtain a contract with a customer ¥ 148,074 ¥ 186,074 Honda recognizes the incremental costs of obtaining a contract with a customer and the costs incurred in fulfilling a contract with a customer that are directly associated with the contract as an asset, if those costs are expected to be recoverable. The incremental costs of obtaining a contract are those costs that an entity incurs to obtain non-current The amounts of amortization of the assets for the years ended March 31, 2022, 2023 and 2024 are ¥39,682 million, ¥52,193 million and ¥60,391 million, respectively.

Research and Development

Research and Development	12 Months Ended
Research and Development	Mar. 31, 2024
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Research and Development	(21) Research and Development Research and development costs for the years ended March 31, 2022, 2023 and 2024 consist of the following: Yen (millions) 2022 2023 2024 Research and development expenditures incurred during the reporting period ¥ 804,025 ¥ 852,067 ¥ 976,366 Amount capitalized (159,174 ) (120,811 ) (207,519 ) Amortization and impairment losses of capitalized development costs 142,205 149,659 154,780 Total ¥ 787,056 ¥ 880,915 ¥ 923,627

Finance Income and Finance Cost

Finance Income and Finance Costs	12 Months Ended
Finance Income and Finance Costs	Mar. 31, 2024
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Finance Income and Finance Costs	(22) Finance Income and Finance Costs Finance income and finance costs for the years ended March 31, 2022, 2023 and 2024 consist of the following: Yen (millions) 2022 2023 2024 Interest income: Financial assets measured at amortized cost ¥ 22,847 ¥ 69,217 ¥ 169,287 Financial assets measured at fair value through other comprehensive income 185 497 798 Financial assets measured at fair value through profit or loss 2,595 3,357 3,610 Total 25,627 73,071 173,695 Interest expense: Financial liabilities measured at amortized cost (15,706 ) (34,065 ) (42,609 ) Other (1,161 ) (2,047 ) (17,022 ) Total (16,867 ) (36,112 ) (59,631 ) Other, net: Dividends received: Financial assets measured at fair value through other comprehensive income 4,777 6,150 8,804 Financial assets measured at fair value through profit or loss — — — Gains (losses) on derivatives: Financial assets and financial liabilities measured at fair value through profit or loss (77,789 ) (92,144 ) (202 ) Gains (losses) on foreign exchange 68,033 47,705 67,414 Other (7,335 ) (17,319 ) (40,490 ) Total (12,314 ) (55,608 ) 35,526 Total ¥ (3,554 ) ¥ (18,649 ) ¥ 149,590

Income Taxes

Income Taxes	12 Months Ended
Income Taxes	Mar. 31, 2024
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Income Taxes	(23) Income Taxes (a) Income Tax Expense Profit before income taxes and income tax expense for the years ended March 31, 2022, 2023 and 2024 consist of the following: Yen (millions) 2022 2023 2024 Japan Foreign Total Japan Foreign Total Japan Foreign Total Profit (loss) before income taxes ¥ (42,213 ) ¥ 1,112,403 ¥ 1,070,190 ¥ (40,638 ) ¥ 920,203 ¥ 879,565 ¥ 148,651 ¥ 1,493,733 ¥ 1,642,384 Income tax expense (benefit): Current taxes 9,539 277,894 287,433 12,699 353,611 366,310 19,081 606,077 625,158 Deferred taxes (4,081 ) 26,137 22,056 (92,631 ) (111,423 ) (204,054 ) 34,265 (199,629 ) (165,364 ) Total ¥ 5,458 ¥ 304,031 ¥ 309,489 ¥ (79,932 ) ¥ 242,188 ¥ 162,256 ¥ 53,346 ¥ 406,448 ¥ 459,794 The benefits of deferred taxes in Japan for the year ended March 31, 2023, include tax benefits of ¥ million resulting from the recognition of deferred tax assets previously unrecognized on tax losses, tax credits and deductible temporary differences since we consider it probable that future taxable profit would be available in the consolidated group under the Japanese Group Relief System, which consists of the Company and its certain consolidated subsidiaries in Japan. The statutory income tax rate in Japan i The Japanese statutory income tax rate for the years ended March 31, 2022, 2023 and 2024 differs from the average effective tax rate for the following reasons: 2022 2023 2024 Statutory income tax rate 30.2 % 30.2 % 30.2 % Difference in statutory income tax rates of foreign subsidiaries (4.5 ) (6.3 ) (5.4 ) Effects of investments accounted for using the equity method (5.7 ) (4.0 ) (2.0 ) Effects of undistributed earnings and withholding taxes on royalty 7.1 11.3 6.1 Changes in unrecognized deferred tax assets 1.4 (10.3 ) 0.1 Effects of income and expense not taxable and deductible for tax purpose 0.0 0.1 0.0 Effects of tax credit (0.9 ) (2.9 ) (2.6 ) Other adjustments relating to prior years (0.1 ) (0.5 ) (0.1 ) Adjustments for the uncertain tax treatments on income taxes 0.9 0.6 0.1 Adjustments for the changes in income tax laws 0.1 (0.6 ) 0.2 Other 0.4 0.8 1.4 Average effective tax rate 28.9 % 18.4 % 28.0 % (b) Deferred Tax Assets and Deferred Tax Liabilities The components by major factor in deferred tax assets and deferred tax liabilities as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Deferred tax assets: Inventories ¥ 51,604 ¥ 60,476 Accrued expenses 56,926 75,627 Provisions 133,007 170,286 Property, plant and equipment 27,854 40,470 Intangible assets 47,995 75,630 Retirement benefit liabilities 64,275 59,951 Lease liabilities* 70,522 72,720 Carryforward of unused tax losses 108,106 95,400 Carryforward of unused tax credit 14,930 11,387 Other* 106,043 105,431 Total ¥ 681,262 ¥ 767,378 Deferred tax liabilities: Property, plant and equipment* ¥ 173,881 ¥ 154,256 Intangible assets 182,258 195,662 Other financial assets 59,275 55,074 Operating leases 772,991 776,937 Undistributed earnings 60,914 71,577 Retirement benefit assets 56,932 37,780 Receivables from financial services 68,005 63,070 Other 78,514 97,233 Total ¥ 1,452,770 ¥ 1,451,589 Net deferred tax assets (liabilities) ¥ (771,508 ) ¥ (684,211 ) Explanatory note: * Honda has adopted “Deferred Tax related to Assets and Liabilities arising from a Single Transaction (Amendments to IAS 12)” with a date of initial application of April 1, 2023 and the comparative information has been retrospectively adjusted. The changes in deferred tax assets and deferred tax liabilities recognized as income tax expense in the consolidated statements of income for the years ended March 31, 2022, 2023 and 2024 are as follows: Yen (millions) 2022 2023 2024 Inventories ¥ (9,865 ) ¥ (7,407 ) ¥ (8,335 ) Provisions (3,491 ) (27,854 ) (26,423 ) Property, plant and equipment* 1 (5,960 ) 19,079 (41,544 ) Retirement benefit liabilities (assets) (4,991 ) (4,149 ) (1,840 ) Operating leases (35,308 ) (153,429 ) (93,321 ) Undistributed earnings 4,198 (1,005 ) 8,355 Carryforward of unused tax losses (1,608 ) (42,172 ) 17,652 Carryforward of unused tax credit 16,102 9,504 4,238 Other* 1 2 62,979 3,379 (24,146 ) Total ¥ 22,056 ¥ (204,054 ) ¥ (165,364 ) Explanatory notes: 1 Honda has adopted “Deferred Tax related to Assets and Liabilities arising from a Single Transaction (Amendments to IAS 12)” with a date of initial application of April 1, 2023 and the comparative information has been retrospectively adjusted. 2 The income tax expense recognized due to the decrease of deferred tax assets arising from accrued expenses included in other as of March 31, 2022 is ¥27,321 million. Honda considers the probability that a portion of, or all of, the deductible temporary differences, carryforward of unused tax losses and carryforward of unused tax credit can be utilized against future taxable profits in the recognition of deferred tax assets. In assessing recoverability of deferred tax assets, management considers the scheduled reversal of deferred tax liabilities, projected future taxable profit and tax planning strategies. Based upon the level of historical taxable profit and projections for future taxable profit over the periods for which the deferred tax assets are deductible, management believes it is probable that Honda will utilize the benefits of these deferred tax assets as of March 31, 2023 and 2024. Uncertainty of estimates of future taxable profit could increase due to changes in the economic environment surrounding Honda, effects by market conditions, effects of currency fluctuations or other factors. Deferred tax assets recognized by entities that have suffered a loss in either the preceding or current period are ¥19,414 million and ¥629 million as of March 31, 2023 and 2024, respectively. Deductible temporary differences, carryforward of unused tax losses and carryforward of unused tax credit for which deferred tax assets are not recognized as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Deductible temporary differences ¥ 391,536 ¥ 446,655 Carryforward of unused tax losses 532,191 439,849 Carryforward of unused tax credit 35,629 65,643 The components by expiry of the carryforward of unused tax losses for which deferred tax assets are not recognized as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Within 1 year ¥ 13,331 ¥ 4,088 Between 1 and 5 years 82,173 95,320 Between 5 and 20 years 107,052 55,480 Indefinite periods 329,635 284,961 Total ¥ 532,191 ¥ 439,849 The components by expiry of the carryforward of unused tax credit for which deferred tax assets are not recognized as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Within 1 year ¥ 5 ¥ 38 Between 1 and 5 years 35,611 65,574 Between 5 and 20 years 13 31 Indefinite periods — — Total ¥ 35,629 ¥ 65,643 The aggregate amounts of temporary differences relating to investments in subsidiaries and interests in joint ventures for which deferred tax liabilities are not recognized as of March 31, 2023 and 2024 are ¥6,956,545 million and ¥8,112,152 million, respectively. (c) Global minimum taxation The Pillar Two model rules released by the Organisation for Economic Co-operation and Development (OECD) have been enacted, or substantively enacted, in certain jurisdictions in which Honda operates. In Japan, the Act for Partial Amendment to the Income Tax Act, etc. (Act No. 3 of 2023) to implement the global minimum tax rule has been enacted. The Company and its certain domestic subsidiaries will be additionally taxed on the income of their foreign subsidiaries and joint ventures that are taxed below % in the tax jurisdictions where these subsidiaries and joint ventures are located. Since the enacted global minimum tax rule in Japan is effective from the fiscal years beginning on or after April 1, 2024, there is no current tax impact for the year ended March 31, 2024. If the global minimum tax rule had applied for the year ended March 31, 2024, the impact of it on the Company’s consolidated financial statements would have reasonably been estimated to be immaterial.

Earnings Per Share

Earnings Per Share	12 Months Ended
Earnings Per Share	Mar. 31, 2024
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Earnings Per Share	(24) Earnings Per Shar e Earnings per share attributable to owners of the parent for the years ended March 31, 2022, 2023 and 2024 are calculated based on the following information. There were no significant dilutive potential common shares outstanding for the years ended March 31, 2022, 2023 and 2024. 2022 2023 2024 Profit for the year attributable to owners of the parent (millions of yen) ¥ 707,067 ¥ 651,416 ¥ 1,107,174 Weighted average number of common shares outstanding, basic (shares) 5,159,885,505 5,088,921,345 4,901,560,332 Basic earnings per share attributable to owners of the parent (yen) ¥ 137.03 ¥ 128.01 ¥ 225.88 Explanatory note: * As of the effective date of October 1, 2023, the Company implemented a three-for-one stock split of its common stock to shareholders as of the record date of September 30, 2023. Basic earnings per share attributable to owners of the parent are calculated based on the assumption that the stock split had been implemented at the beginning of the year ended March 31, 2022.

Financial Risk Management

Financial Risk Management	12 Months Ended
Financial Risk Management	Mar. 31, 2024
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Financial Risk Management	(25) Financial Risk Management (a) Risk Management Honda has manufacturing operations throughout the world and sells products and components to various countries. In the course of these activities, Honda holds trade receivables arising from business activities, receivables from financial services, trade payables and financing liabilities, and is thus exposed to market risk, credit risk and liquidity risk associated with the holding of such financial instruments. These risks are evaluated by Honda through periodic monitoring. (b) Market Risk Honda is exposed to the risk that the fair value or future cash flows of a financial instrument fluctuates because of changes in foreign currency exchange rates and interest rates. Honda uses derivatives that consist mainly of foreign currency forward exchange contracts, foreign currency option contracts, currency swap agreements and interest rate swap agreements to reduce primarily the risk that future cash flows of a financial instrument fluctuates because of changes in foreign currency exchange rates and interest rates. Derivatives are used within the scope of actual demand, in accordance with risk management policies. In addition, Honda does not hold any derivatives for trading purpose. 1) Foreign currency exchange rate risk Honda has manufacturing operations throughout the world and exports products and components to various countries. Honda purchases materials and components and sells its products and components in foreign currencies. Therefore, currency fluctuations may affect Honda’s profit and the value of the financial instruments it holds. Foreign currency forward exchange contracts and foreign currency option contracts are used to hedge currency risk of transactions denominated in foreign currencies (principally U.S. dollars). (Foreign currency exchange rate risk sensitivity analysis) Sensitivity analysis of Honda’s foreign currency exchange rate risk associated with holding financial instruments as of March 31, 2023 and 2024 is as follows. The following scenario demonstrates the impact of a 1% appreciation of the Japanese yen against the U.S. dollar on profit before income taxes, holding all variables other than the foreign currency exchange rate constant. Yen (millions) 2023 2024 Impact on profit before income taxes ¥ (2,696) ¥ (4,138) 2) Interest rate risk Honda is exposed to market risk for changes in interest rates related primarily to its debt obligations and receivables from financial services. In addition to short-term financing such as commercial paper, Honda has long-term debt with both fixed and floating rates. Honda’s receivables from financial services primarily use fixed rates. Interest rate swap agreements are mainly used to manage interest rate risk exposure of receivables from financial services and to match finance costs with finance income. Currency swap agreements used among different currencies, also serve to hedge foreign currency exchange risk as well as interest rate risk. (Interest rate risk sensitivity analysis) Sensitivity analysis of Honda’s interest rate risk associated with holding financial instruments as of March 31, 2023 and 2024 is as follows. The following scenario demonstrates the impact of a 100 basis point rise in interest rates on profit before income taxes, holding all variables other than interest rates constant. Yen (millions) 2023 2024 Impact on profit before income taxes ¥ (2,092) ¥ (24,322) 3) Equity price risk Honda is exposed to equity price risk as a result of its holdings of marketable equity securities. Marketable equity securities are held for purposes other than trading, and are mainly classified into financial assets measured at fair value through other comprehensive income. (c) Credit Risk Honda is exposed to the risk that one party to a financial instrument causes a financial loss for the other party by failing to discharge an obligation. Honda reduces the risk of financial assets other than derivatives in accordance with credit administration rules. Honda reduces the risk of derivatives by limiting the counterparties to major international banks and financial institutions that meet the internally established credit guidelines. The credit risk is mainly in receivables from financial services. Credit risk of the portfolio of consumer finance receivables can be affected by general economic conditions. Adverse changes such as a rise in unemployment can increase the likelihood of defaults. Declines in used vehicle prices can reduce the amount of recoveries on repossessed collaterals. The finance subsidiaries of the Company manage exposures to credit risk in consumer finance receivables by monitoring and adjusting underwriting standards, which affect the level of credit risk that Honda assumes, pricing contracts for expected losses, and focusing collection efforts to minimize losses. Credit risk on dealer finance receivables is affected primarily by the financial strength of the dealers within the portfolio, the value of collateral securing the financings, and economic and market factors that could affect the creditworthiness of dealers. The finance subsidiaries of the Company manage exposures to credit risk in dealer finance receivables by performing comprehensive reviews of dealers prior to establishing financing arrangements and continuously monitoring the payment performance and creditworthiness of these dealers. Honda has entered into various guarantee agreements, which mainly consist of loan commitments to dealers and guarantees of bank loans of employees for their housing costs. The finance subsidiaries of the Company maintain unused balances on committed lines to dealers based on loan commitment contracts. Although committed lines have been extended, they will not necessarily be withdrawn, as certain contracts contain terms and conditions of withdrawal that require screening of the obligor’s credit standing. There is risk that dealers fail to discharge withdrawn committed lines and cause financial loss for Honda. Regarding the bank loans of employees for their housing costs, if an employee defaults on his/her loan payments, Honda is required to perform under the guarantee. As of March 31, 2024, no amount has been accrued for any estimated losses under the obligations, as it is probable that the employees will be able to make all scheduled payments. 1) Credit risk exposure The analysis of the age of receivables from financial services that are past due as of March 31, 2023 and 2024 is as follows: Yen (millions) As of March 31, 2023 Less than 30 days 30-59 days 60-89 days 90 days and Total Consumer finance receivables: Retail ¥ 223,674 ¥ 55,675 ¥ 13,185 ¥ 9,481 ¥ 302,015 Finance lease 545 118 5 300 968 Dealer finance receivables: Wholesale 8,929 9 11 18 8,967 Total ¥ 233,148 ¥ 55,802 ¥ 13,201 ¥ 9,799 ¥ 311,950 Yen (millions) As of March 31, 2024 Less than 30 days 30-59 days 60-89 days 90 days and Total Consumer finance receivables: Retail ¥ 328,741 ¥ 74,948 ¥ 19,722 ¥ 17,246 ¥ 440,657 Finance lease 1,499 258 16 481 2,254 Dealer finance receivables: Wholesale 10,457 51 16 44 10,568 Total ¥ 340,697 ¥ 75,257 ¥ 19,754 ¥ 17,771 ¥ 453,479 The balances of retail receivables included in consumer finance receivables as of March 31, 2023 and 2024 are as follows: Yen (millions) 12-month Lifetime ECL Total As of March 31, 2023 Not credit- Credit- Consumer finance receivables: Retail* ¥ 4,985,289 ¥ 356,005 ¥ 21,966 ¥ 5,363,260 Yen (millions) 12-month Lifetime ECL Total As of March 31, 2024 Not credit- Credit- Consumer finance receivables: Retail* ¥ 6,919,715 ¥ 374,582 ¥ 36,162 ¥ 7,330,459 Explanatory note: * The tables above represent the gross amounts of retail receivables by stages of ECL model since the expected credit losses are measured collectively by our finance subsidiaries and the balances of those receivables are not directly allocated to the risk ratings. Dealerships are assigned an internal risk rating based primarily on their financial condition. At a minimum, risk ratings for dealerships are updated annually and more frequently for dealerships with weaker risk ratings. The following table shows the balances of dealer finance receivables and loan commitments classified into Group A or B based on the internal risk ratings. Group A includes the dealer finance receivables and loan commitments of dealerships with high credit quality characteristics. Group B includes the dealer finance receivables and loan commitments of remaining dealerships. The balances of dealer finance receivables and the undiscounted maximum amounts of potential payment for loan commitments by this risk rating as of March 31, 2023 and 2024 are as follows: Yen (millions) 12-month ECL Lifetime ECL Total As of March 31, 2023 Not credit-impaired Credit-impaired Dealer finance receivables: Group A ¥ 297,885 ¥ 706 ¥ 4,612 ¥ 303,203 Group B 116,156 1,684 123 117,963 Total ¥ 414,041 ¥ 2,390 ¥ 4,735 ¥ 421,166 Loan commitments: Group A ¥ 103,858 ¥ — ¥ — ¥ 103,858 Group B 15,364 — — 15,364 Total ¥ 119,222 ¥ — ¥ — ¥ 119,222 The undiscounted maximum amount of potential payment for guarantees of bank loans of employees for their housing costs as of March 31, 2023 is ¥ million. Yen (millions) 12-month ECL Lifetime ECL Total As of March 31, 2024 Not credit-impaired Credit-impaired Dealer finance receivables: Group A ¥ 527,138 ¥ 3,403 ¥ 6,010 ¥ 536,551 Group B 166,726 3,559 199 170,484 Total ¥ 693,864 ¥ 6,962 ¥ 6,209 ¥ 707,035 Loan commitments: Group A ¥ 82,802 ¥ — ¥ — ¥ 82,802 Group B 9,571 — — 9,571 Total ¥ 92,373 ¥ — ¥ — ¥ 92,373 The undiscounted maximum amount of potential payment for guarantees of bank loans of employees for their housing costs as of March 31, 2024 is ¥5,034 million. 2) Collateral held as security The finance subsidiaries of the Company generally hold sold products as collateral for consumer finance receivables. The finance subsidiaries of the Company hold the dealerships’ other assets as collateral in addition to sold products for dealer finance receivables. The extent to which collateral mitigates credit risk is dependent on the value of collateral relative to the outstanding receivables balance at the time of repossession. The estimated fair value of collateral for credit-impaired consumer finance receivables excluding collateral values in excess of carrying amounts as of March 31, 2023 and 2024 are approximately 80% and 80%, respectively, and those for dealer finance receivables are approximately 100% and 100% of the carrying amounts, respectively. The extent to which collateral mitigates credit risk is also dependent on finance subsidiaries’ ability to take possession of the collateral. (d) Liquidity Risk Honda raises funds by commercial paper, bank loans, medium-term notes, corporate bonds and securitization of finance receivables and equipment on operating leases. Honda is exposed to the liquidity risk that Honda would not be able to repay liabilities on the due date due to the deterioration of the financing environment. Exposure to liquidity risk is managed by maintaining sufficient capital resources, a sufficient level of liquidity and a sound balance sheet. Honda meets its working capital targets primarily through cash generated by business operations, bank loans, corporate bonds and commercial paper. Honda funds financial programs for customers and dealers primarily from medium-term notes, bank loans, securitization of finance receivables and equipment on operating leases, commercial paper and corporate bonds. The unused portions of the credit facility of Honda’s commercial paper and medium-term note programs as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Commercial paper ¥ 729,096 ¥ 900,657 Medium-term notes 3,832,311 1,857,974 Total ¥ 4,561,407 ¥ 2,758,631 Honda is authorized to obtain financing at prevailing interest rates under these programs. Honda is aware of the possibility that various factors, such as recession-induced market contraction and financial and foreign exchange market volatility may adversely affect liquidity. For this reason, Honda has sufficient committed lines of credit that serve as alternative liquidity for the commercial paper issued regularly to replace debt. The unused portions of the committed lines of credit extended by financial institutions to Honda as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Commercial paper programs ¥ 1,306,781 ¥ 1,461,590 Other 65,299 63,759 Total ¥ 1,372,080 ¥ 1,525,349 Borrowings under those committed lines of credit generally are available at the prime interest rate. Maturity analysis of financial liabilities 1) Non-derivative Non-derivative Yen (millions) As of March 31, 2023 Carrying amount Within 1 year Between Later than Total contractual Trade payables ¥ 1,426,333 ¥ 1,426,333 ¥ — ¥ — ¥ 1,426,333 Financing liabilities 7,665,168 3,410,145 4,074,986 511,254 7,996,385 Accrued expenses 419,570 419,570 — — 419,570 Other financial liabilities 369,878 87,685 100,800 207,949 396,434 Total ¥ 9,880,949 ¥ 5,343,733 ¥ 4,175,786 ¥ 719,203 ¥ 10,238,722 Yen (millions) As of March 31, 2024 Carrying amount Within 1 year Between Later than Total contractual Trade payables ¥ 1,609,836 ¥ 1,609,836 ¥ — ¥ — ¥ 1,609,836 Financing liabilities 10,163,557 4,379,834 5,875,709 686,075 10,941,618 Accrued expenses 638,319 638,319 — — 638,319 Other financial liabilities 421,185 117,190 117,172 221,844 456,206 Total ¥ 12,832,897 ¥ 6,745,179 ¥ 5,992,881 ¥ 907,919 ¥ 13,645,979 Other financial liabilities include lease liabilities. Lease liabilities by maturity as of March 31, 2023 and 2024 are as follows: Yen (millions) As of March 31, 2023 Carrying amount Within 1 year Between Later than Total contractual Lease liabilities ¥ 315,958 ¥ 69,297 ¥ 87,428 ¥ 185,790 ¥ 342,515 Yen (millions) As of March 31, 2024 Carrying amount Within 1 year Between Later than Total contractual Lease liabilities ¥ 332,406 ¥ 79,012 ¥ 101,205 ¥ 187,211 ¥ 367,428 2) Derivative financial liabilities Derivative financial liabilities by maturity as of March 31, 2023 and 2024 are as follows: Yen (millions) As of March 31, 2023 Within 1 year Between 1 and 5 years Later than 5 years Total contractual Derivative financial liabilities ¥ 109,112 ¥ 137,056 ¥ 22,787 ¥ 268,955 Yen (millions) As of March 31, 2024 Within 1 year Between 1 and 5 years Later than 5 years Total contractual Derivative financial liabilities ¥ 121,922 ¥ 154,387 ¥ 3,863 ¥ 280,172

Fair Value

Fair Value	12 Months Ended
Fair Value	Mar. 31, 2024
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Fair Value	(26) Fair Value (a) Definition of Fair Value Hierarchy Honda uses a three-level hierarchy when measuring fair value. The following is a description of the three hierarchy levels: Level 1 Quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access as of the measurement date Level 2 Inputs other than quoted prices included within Level 1 that are observable for the assets or liabilities, either directly or indirectly Level 3 Unobservable inputs for the assets or liabilities The level in the fair value hierarchy within which a fair value measurement in its entirety falls is based on the lowest input that is significant to the fair value measurement in its entirety. Honda recognizes the transfers between the levels of the fair value hierarchy at the end of the reporting period during which the change has occurred. (b) Method of Fair Value Measurement The fair values of assets and liabilities are determined based on relevant market information and through the use of an appropriate valuation method. The measurement methods and assumptions used in the measurement of assets and liabilities are as follows: (Cash and cash equivalents, trade receivables and trade payables) The fair values approximate their carrying amounts due to their short-term maturities. (Receivables from financial services) The fair value of receivables from financial services is measured primarily by discounting future cash flows using the current interest rates applicable for these receivables of similar remaining maturities. Fair value measurement for receivables from financial services is classified as Level 3. (Debt securities) Debt securities consist mainly of mutual funds, corporate bonds, local bonds and auction rate securities. The fair value of mutual funds with an active market is measured by using quoted market prices. Fair value measurement for mutual funds with an active market is classified as Level 1. The fair values of corporate bonds and local bonds are measured based on proprietary pricing models provided by specialists and/or market makers and the models obtain a wide array of market observable inputs such as credit ratings and discount rates. Fair value measurements for corporate bonds and local bonds are classified as Level 2. The subsidiary’s auction rate securities are A to AAA rated and are insured by qualified guarantee agencies, and reinsured by the Secretary of Education and the United States government, and guaranteed at approximately % by the United States government. To measure fair value of auction rate securities, Honda uses a third-party-developed valuation model which obtains a wide array of market observable inputs, as well as unobservable inputs including probability of passing or failing auction at each auction. Fair value measurement for auction rate securities is classified as Level 3. (Equity securities) The fair value of equity securities with an active market is measured by using quoted market prices. Fair value measurement for equity securities with an active market is classified as Level 1. The fair value of equity securities with no active market is measured mainly by using a discounted cash flow method, a comparable company valuation method and other appropriate valuation methods. Fair value measurement for equity securities with no active market is classified as Level 3. In addition, in the case that cost represents the best estimate of fair value, fair value for the equity securities with no active market is measured at cost. Cash flow forecasts and discount rate for the discounted cash flow model and price book-value ratio (PBR) of a comparable company for the comparable company valuation method are used as significant unobservable inputs in the fair value measurement of equity securities classified as Level 3. The fair value increases (decreases) as Cash flow forecasts increase (decrease), discount rate decline (rise) and PBR of a comparable company rise (decline). Such fair value measurements are conducted in accordance with the group accounting policy approved by the appropriate person of authority and based upon valuation methods determined by personnel in accounting divisions of Honda. (Derivatives) Derivatives consist mainly of foreign currency forward exchange contracts, foreign currency option contracts, currency swap agreements and interest rate swap agreements. The fair values of foreign currency forward exchange contracts and foreign currency option contracts are measured by using market observable inputs such as spot exchange rates, discount rates and implied volatility. The fair values of currency swap agreements and interest rate swap agreements are measured by discounting future cash flows using market observable inputs such as interest rates and foreign exchange rates. Fair value measurements for these derivatives are classified as Level 2. The credit risk of the counterparties is considered in the valuation of derivatives. (Financing liabilities) The fair value of financing liabilities is measured by discounting future cash flows using interest rates currently available for liabilities of similar terms and remaining maturities. Fair value measurement of financing liabilities is mainly classified as Level 2. (c) Assets and Liabilities Measured at Fair Value on a recurring basis Assets and liabilities measured at fair value on a recurring basis as of March 31, 2023 and 2024 consist of the following: Yen (millions) As of March 31, 2023 Level 1 Level 2 Level 3 Total Other financial assets: Financial assets measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 29,026 ¥ — ¥ 29,026 Interest rate instruments — 151,242 — 151,242 Other — — 5,700 5,700 Total — 180,268 5,700 185,968 Debt securities 43,264 53,634 5,074 101,972 Financial assets measured at fair value through other Debt securities — 26,555 — 26,555 Equity securities 325,318 — 149,820 475,138 Total ¥ 368,582 ¥ 260,457 ¥ 160,594 ¥ 789,633 Other financial liabilities: Financial liabilities measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 95,412 ¥ — ¥ 95,412 Interest rate instruments — 141,786 — 141,786 Other — 5,770 — 5,770 Total — 242,968 — 242,968 Total ¥ — ¥ 242,968 ¥ — ¥ 242,968 There were transfers between Level 1 and Level 2 for the year ended March 31, 2023. Yen (millions) As of March 31, 2024 Level 1 Level 2 Level 3 Total Other financial assets: Financial assets measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 80,347 ¥ — ¥ 80,347 Interest rate instruments — 108,034 — 108,034 Other — — 5,806 5,806 Total — 188,381 5,806 194,187 Debt securities 55,265 63,886 4,542 123,693 Financial assets measured at fair value through other Debt securities — 30,567 — 30,567 Equity securities 407,489 — 115,214 522,703 Total ¥ 462,754 ¥ 282,834 ¥ 125,562 ¥ 871,150 Other financial liabilities: Financial liabilities measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 100,708 ¥ — ¥ 100,708 Interest rate instruments — 133,381 — 133,381 Other — 2,503 — 2,503 Total — 236,592 — 236,592 Total ¥ — ¥ 236,592 ¥ — ¥ 236,592 There were no transfers between Level 1 and Level 2 for the year ended March 31, 2024. The changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the years ended March 31, 2023 and 2024 are as follows: Yen (millions) For the year ended March 31, 2023 Derivatives Debt securities Equity securities Balance as of April 1, 2022 ¥ 4,648 ¥ 4,773 ¥ 133,038 Total gains or losses: Profit or loss 678 (136 ) — Other comprehensive income — — 9,156 Purchases — — 10,029 Sales — — (1,144 ) Transfer to level 1 due to listing — — (1,551 ) Exchange differences on translating foreign operations 374 437 292 Balance as of March 31, 2023 ¥ 5,700 ¥ 5,074 ¥ 149,820 Unrealized gains or losses included in profit or loss on assets held at March 31, 2023 ¥ 678 ¥ (136 ) ¥ — Yen (millions) For the year ended March 31, 2024 Derivatives Debt securities Equity securities Balance as of April 1, 2023 ¥ 5,700 ¥ 5,074 ¥ 149,820 Total gains or losses: Profit or loss (723 ) 145 — Other comprehensive income — (4,625 ) (47,742 ) Purchases — 4,625 7,535 Sales — (1,156 ) (160 ) Exchange differences on translating foreign operations 829 479 1,408 Other — — 4,353 Balance as of March 31, 2024 ¥ 5,806 ¥ 4,542 ¥ 115,214 Unrealized gains or losses included in profit or loss on assets held at March 31, 2024 ¥ (723 ) ¥ 145 ¥ — Explanatory notes: 1. Gains or losses included in profit or loss for the years ended March 31, 2023 and 2024 are included in other, net in finance income and finance costs in the consolidated statements of income. 2. Gains or losses on equity securities included in other comprehensive income for the years ended March 31, 2023 and 2024 are included in net changes in revaluation of financial assets measured at fair value through other comprehensive income under items that will not be reclassified to profit or loss in the consolidated statements of comprehensive income. (d) Financial Assets and Financial Liabilities measured at amortized cost The carrying amounts and fair values of financial assets and financial liabilities measured at amortized cost as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Carrying Fair value Carrying Fair value Receivables from financial services ¥ 5,894,752 ¥ 5,696,283 ¥ 8,175,270 ¥ 7,964,497 Debt securities 85,235 85,235 69,751 69,751 Financing liabilities 7,665,168 7,440,205 10,163,557 10,008,013 The table does not include financial assets and financial liabilities measured at amortized cost whose fair values approximate their carrying amounts.

Offsetting of Financial Assets

Offsetting of Financial Assets and Financial Liabilities	12 Months Ended
Offsetting of Financial Assets and Financial Liabilities	Mar. 31, 2024
TextBlock1 [Abstract]
Offsetting of Financial Assets and Financial Liabilities	(27) Offsetting of Financial Assets and Financial Liabilities The offsetting information regarding financial assets and financial liabilities as of March 31, 2023 and 2024 is as follows: Yen (millions) As of March 31, 2023 Gross amounts of Amounts offset Net amounts presented Amounts not offset due to not Net Amounts Other financial assets Derivatives ¥ 185,968 ¥ — ¥ 185,968 ¥ (133,472 ) ¥ 52,496 Other financial Derivatives 242,968 — 242,968 (133,472 ) 109,496 Yen (millions) As of March 31, 2024 Gross amounts of Amounts offset Net amounts presented Amounts not offset due to not Net Amounts Other financial assets Derivatives ¥ 194,187 ¥ — ¥ 194,187 ¥ (106,133 ) ¥ 88,054 Other financial Derivatives 236,592 — 236,592 (106,133 ) 130,459 Generally, the set-off

Commitments and Contingent Liab

Commitments and Contingent Liabilities	12 Months Ended
Commitments and Contingent Liabilities	Mar. 31, 2024
TextBlock1 [Abstract]
Commitments and Contingent Liabilities	(28) Commitments and Contingent Liabilities (a) Commitments Purchase commitments Commitments for purchases of property, plant and equipment and other commitments as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Commitments for purchases of property, plant and equipment and other commitments ¥ 107,865 ¥ 108,440 (b) Claims and Lawsuits Honda is subject to potential liability under various lawsuits and claims. Honda recognizes a provision for loss contingencies when it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation, and a reliable estimate can be made of the amount of the obligation. Honda reviews these pending lawsuits and claims periodically and adjusts the amounts recognized for these contingent liabilities, if necessary, by considering the nature of lawsuits and claims, the progress of the case and the opinions of legal counsel. With respect to product liability, personal injury claims or lawsuits, Honda believes that any judgment that may be recovered by any plaintiff for general and special damages and court costs will be adequately covered by Honda’s insurance and provision. Punitive damages are claimed in certain of these lawsuits. After consultation with legal counsel, and taking into account all known factors pertaining to existing lawsuits and claims, Honda believes that the ultimate outcome of such lawsuits and pending claims should not result in liability to Honda that would be likely to have an adverse significant Loss related to airbag inflators Honda has been conducting market-based measures in relation to airbag inflators. Honda recognizes a provision for specific warranty costs when it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation, and a reliable estimate can be made of the amount of the obligation. There is a possibility that Honda will need to recognize additional provisions when new evidence related to the product recalls arises. However, it is not possible for Honda to reasonably estimate the amount and timing of potential future losses as of the date of this report.

Structured Entities

Structured Entities	12 Months Ended
Structured Entities	Mar. 31, 2024
Investments accounted for using the equity method [abstract]
Structured Entities	(29) Structured Entities Honda considers whether its control over structured entities exists under IFRS 10 “Consolidated Financial Statements”. Honda consolidates structured entities over which it has control, by comprehensively determining whether its control over the entity exists based on any contractual arrangements with such entity as well as the percentage of its voting or similar rights in the entity. The finance subsidiaries of the Company periodically securitize finance receivables and operating lease assets for liquidity and funding purposes. Securitized assets are transferred to structured entities that are established with the limited purpose of issuing asset-backed securities. The finance subsidiaries of the Company are deemed to have the power to direct the activities of these structured entities that most significantly impact the entities’ economic performance as they retain servicing rights, including the management of delinquencies and defaults of the finance receivables and beneficial interests in operating lease assets. Furthermore, the finance subsidiaries of the Company are deemed to have the obligation to absorb losses and the right to receive variable returns from these structured entities that could potentially be significant to these structured entities by retaining certain subordinated interests of these structured entities. Therefore, the Company is deemed to have substantial control over these entities and consolidates them. Investors in the asset-backed securities issued by these structured entities do not have recourse to the finance subsidiaries’ general credit with the exception of representations and warranties customary in the industry provided by the finance subsidiaries. There were no significant unconsolidated structured entities as of March 31, 2023 and 2024.

Related Parties

Related Parties	12 Months Ended
Related Parties	Mar. 31, 2024
TextBlock1 [Abstract]
Related Parties	(30) Related Parties (a) Related Party Transactions Honda mainly purchases materials, supplies and services from affiliates and joint ventures, and sells finished goods, parts used in its products, equipment and services to them in the ordinary course of business. Transactions with affiliates and joint ventures are generally made at values that approximate arm’s-length The balances of receivables and payables with affiliates and joint ventures as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Receivables: Affiliates ¥ 95,429 ¥ 76,290 Joint ventures 340,368 265,992 Total ¥ 435,797 ¥ 342,282 Payables: Affiliates ¥ 207,090 ¥ 225,706 Joint ventures 67,044 85,023 Total ¥ 274,134 ¥ 310,729 The amount of the transactions with affiliates and joint ventures for the years ended March 31, 2022, 2023 and 2024 are as follows: Yen (millions) 2022 2023 2024 Sales revenue: Affiliates ¥ 93,187 ¥ 125,318 ¥ 141,323 Joint ventures 1,053,370 942,003 818,607 Total ¥ 1,146,557 ¥ 1,067,321 ¥ 959,930 Purchase: Affiliates ¥ 1,176,066 ¥ 1,443,840 ¥ 1,620,755 Joint ventures 194,321 238,341 442,035 Total ¥ 1,370,387 ¥ 1,682,181 ¥ 2,062,790 Unrecognized commitment The Company entered into the joint venture agreement with LG Energy Solution, Ltd. on August 29, 2022 and committed to invest US$1,730 million in L-H (b) Compensation to Key Management Compensation paid to the directors and executive officers of the Company for the years ended March 31, 2022, 2023 and 2024 are as follows: Yen (millions) 2022 2023 2024 Remuneration ¥ 696 ¥ 679 ¥ 1,209 STI (Short Term Incentive) 188 229 612 LTI (Long Term Incentive) 159 286 453 Total ¥ 1,043 ¥ 1,194 ¥ 2,274 (c) Major Consolidated Subsidiaries Major consolidated subsidiaries as of March 31, 2024 are as follows: Company Country of Function Percentage Honda R&D Co., Ltd. Japan Research & Development 100.0 Honda Finance Co., Ltd. Japan Finance 100.0 American Honda Motor Co., Inc. U.S.A. Coordination of Subsidiaries Operation, Research & Development, Manufacturing and Sales 100.0 American Honda Finance Corporation U.S.A. Finance 100.0 Honda Development and Manufacturing of America, LLC U.S.A. Research & Development and Manufacturing 100.0 Honda Canada Inc. Canada Manufacturing and Sales 100.0 Honda Canada Finance Inc. Canada Finance 100.0 Honda de Mexico, S.A. de C.V. Mexico Manufacturing and Sales 100.0 Honda Motor Europe Limited U.K. Coordination of Subsidiaries Operation and Sales 100.0 Honda Finance Europe plc U.K. Finance 100.0 Honda Motor (China) Investment Co., Ltd. China Coordination of Subsidiaries Operation and Sales 100.0 Honda Auto Parts Manufacturing Co., Ltd. China Manufacturing 100.0 Honda Motorcycle & Scooter India (Private) Ltd. India Manufacturing and Sales 100.0 Honda Cars India Limited India Manufacturing and Sales 100.0 P.T. Honda Prospect Motor Indonesia Manufacturing and Sales 51.0 Honda Malaysia Sdn Bhd Malaysia Manufacturing and Sales 51.0 Asian Honda Motor Co., Ltd. Thailand Coordination of Subsidiaries Operation and Sales 100.0 Honda Automobile (Thailand) Co., Ltd. Thailand Manufacturing and Sales 89.0 Thai Honda Co., Ltd. Thailand Manufacturing and Sales 72.5 Honda Vietnam Co., Ltd. Vietnam Manufacturing and Sales 70.0 Honda South America Ltda. Brazil Coordination of Subsidiaries Operation 100.0 Moto Honda da Amazonia Ltda. Brazil Manufacturing and Sales 100.0

Subsequent Event

Subsequent Event	12 Months Ended
Subsequent Event	Mar. 31, 2024
TextBlock1 [Abstract]
Subsequent Event	(3 1 Acquisition of the Company’s Own Shares The Board of Directors of the Company, at its meeting held on May 10, 2024, resolved that the Company will acquire its own shares pursuant to Article 459, Paragraph 1 of the Company Law and Article 36 of the Company’s Articles of Incorporation. (a) Reason for acquisition of own shares The Company will acquire its own shares for the purpose, among others, of improving efficiency of its capital structure and implementing a flexible capital strategy. (b) Details of the acquisition 1) Class of shares to be acquired: Shares of common stock 2) Total number of shares to be acquired: Up to 180,000,000 shares (3.7 % of total number of issued shares (excluding treasury stock)) 3) Total amount of shares to be acquired: Up to 300,000 million yen 4) Period of acquisition: Starting on May 13, 2024 and ending on March 31, 2025 5) Method of acquisition: Market purchases on the Tokyo Stock Exchange 1. Purchases through the Tokyo Stock Exchange Trading Network Off-Auction (ToSTNeT-3) 2. Market purchases based on a discretionary trading contract regarding acquisition of own shares

Approval of Release of Consolid

Approval of Release of Consolidated Financial Statements	12 Months Ended
Approval of Release of Consolidated Financial Statements	Mar. 31, 2024
TextBlock1 [Abstract]
Approval of Release of Consolidated Financial Statements	(3 2 The release of the consolidated financial statements was approved by Toshihiro Mibe, Director, President and Representative Executive Officer and Eiji Fujimura, Director, Managing Executive Officer and Chief Financial Officer on June 19, 2024.

Material Accounting Policies (P

Material Accounting Policies (Policies)	12 Months Ended
Material Accounting Policies (Policies)	Mar. 31, 2024
Statement [LineItems]
Basis of Consolidation	(a) Basis of Consolidation The consolidated financial statements include the accounts of the Company, its subsidiaries Honda controls an entity when Honda is exposed or has rights to variable returns from involvement with the entity, and has the ability to affect those returns by using its power, which is the current ability to direct the relevant activities, over the entity. To determine whether or not Honda controls an entity, status of voting rights or similar rights, contractual agreements and other specific factors are taken into consideration. Structured entities are entities designed so that voting or similar rights are not the dominant factor in deciding who controls the entity. Honda consolidates structured entities over which it has control, by comprehensively determining whether its control over the entity exists based on any contractual arrangements with such entity as well as the percentage of its voting or similar rights in the entity. The financial statements of subsidiaries are included in the consolidated financial statements from the date when the control is obtained until the date when the control is lost. The financial statements of subsidiaries have been adjusted in order to ensure consistency with the accounting policies adopted by the Company as necessary. Changes in the Company’s ownership interests in subsidiaries that do not result in a loss of control are accounted for as equity transactions. When control over a subsidiary is lost, the investment retained after the loss of control is remeasured at fair value as of the date of the loss of control, and any gain or loss on such remeasurement and disposal of the interest sold is recognized in profit or loss.
Investments in Affiliates and Joint Ventures (Investments Accounted for Using the Equity Method)	(b) Investments in Affiliates and Joint Ventures (Investments Accounted for Using the Equity Method) Affiliates are entities over which Honda has a significant influence over the decisions on financial and operating policies, but does not have control or joint control. Joint ventures are joint arrangements whereby the parties including Honda that have joint control have rights to the net assets of the arrangement. Joint arrangements are arrangements of which two or more parties have joint control, and joint control is the contractually agreed sharing of control of an arrangement, which exists only when decisions about the relevant activities require the unanimous consent of the parties sharing control. Investments in affiliates and joint ventures are accounted for using the equity method from the date when the investees are determined to be affiliates or joint ventures until the date when they ceased to be classified as affiliates or joint ventures. Under the equity method, the investment is initially recognized at cost, and the carrying amount is subsequently increased or decreased, to recognize Honda’s The use of the equity method is discontinued from the date when the investees are determined to be no longer affiliates or joint ventures. The investment retained after cessation of the equity method is remeasured at fair value, and any gain or loss on such remeasurement and disposal of the investment is recognized in profit or loss.
Foreign Currency Translations	(c) Foreign Currency Translations 1) Foreign currency transactions Foreign currency transactions are translated into the respective functional currencies at the exchange rates prevailing when such transactions occur. All foreign currency receivables and payables are translated into the respective functional currencies at the applicable exchange rates at the end of the reporting period. Gains or losses on exchange differences arising on settlement of foreign currency receivables and payables or on their translations at the end of the reporting date are recognized in profit or loss and they are included in finance income and finance costs-other, net in the consolidated statements of income. 2) Foreign operations All assets and liabilities of foreign subsidiaries, affiliates and joint ventures (collectively “foreign operations”), which use a functional currency other than Japanese yen, are translated into Japanese yen at the exchange rates at the end of the reporting period. All revenues and expenses of foreign operations are translated into Japanese yen at the average exchange rate for the period except when a functional currency is the currency of a hyperinflationary economy. Exchange differences arising from translation are recognized in other comprehensive income and accumulated in other components of equity in the consolidated statements of financial position. When a foreign operation is disposed of, and control, significant influence or joint control over the foreign operation is lost, the cumulative amount of exchange differences relating to the foreign operation is reclassified from equity to profit or loss.
Financial Instruments	(d) Financial Instruments A financial instrument is a contract that gives rise to a financial asset of one entity and a financial liability or equity security of another entity. When Honda becomes a party to the contractual provision of a financial instrument, the financial instrument is recognized either as a financial asset or as a financial liability. When Honda purchases or sells a financial asset, the financial asset is recognized or derecognized at the trade date. 1) Non-derivative Honda classifies financial assets other than derivatives into “financial assets measured at amortized cost”, “financial assets measured at fair value through other comprehensive income” or “financial assets measured at fair value through profit or loss”. Honda determines the classification of financial assets upon initial recognition. Financial assets are derecognized when the contractual rights to cash flows from the financial assets expire, or when the contractual rights to receive the cash flows from the financial assets are transferred and all risks and rewards of ownership of the financial assets are substantially transferred. Financial assets measured at amortized cost A financial asset is classified into financial assets measured at amortized cost when the asset is held within a business model whose objective is to hold the asset in order to collect the contractual cash flows, and the contractual term of the financial asset gives rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding. Financial assets measured at amortized cost except trade receivables arising from contracts with customers are initially measured at their fair value and trade receivables arising from contracts with customers are initially measured at their transaction price. Financial assets measured at amortized cost are subsequently measured at amortized cost using the effective interest method. Financial assets measured at fair value A financial asset other than a financial asset measured at amortized cost is classified into financial assets measured at fair value. The financial assets measured at fair value are further classified into the following categories: Financial assets measured at fair value through other comprehensive income A debt security is classified into financial assets measured at fair value through other comprehensive income when the asset is held within a business model whose objective is achieved by both collecting contractual cash flows and selling financial assets, and the contractual terms of the financial asset give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding. The debt securities are initially measured at their fair value, and subsequent changes in fair value are recognized in other comprehensive income except for impairment gain or loss and foreign exchange gain or loss. When the debt securities are derecognized, the cumulative gain or loss previously recognized in other comprehensive income is reclassified from equity to profit or loss. Honda elects to designate investments in equity securities such as shares, held for maintaining and strengthening the trade relationship as financial assets measured at fair value through other comprehensive income. Equity securities designated as financial assets measured at fair value through other comprehensive income are initially measured at their fair value, and subsequent changes in fair value of the investment are recognized in other comprehensive income. However, dividends from the equity securities are principally recognized in profit or loss. When the equity securities are derecognized, the cumulative gain or loss previously recognized in other comprehensive income is directly reclassified to retained earnings. Financial assets measured at fair value through profit or loss Financial assets measured at fair value other than financial assets measured at fair value through other comprehensive income are classified into financial assets measured at fair value through profit or loss. Financial assets measured at fair value through profit or loss are initially measured at their fair value, and subsequent changes in fair value are recognized in profit or loss. (Cash and cash equivalents) Cash and cash equivalents consist of cash on hand, demand deposits, and short-term highly liquid investments that are readily convertible to known amounts of cash and are subject to insignificant risk of changes in value. Honda includes all highly liquid debt instruments with original maturities of three months or less in cash equivalents. 2) Non-derivative Financial liabilities other than derivatives are initially measured at their fair value, and are subsequently measured at amortized cost using the effective interest method. Financial liabilities are derecognized, when the obligations specified in the contract are discharged, canceled or expire. 3) Derivatives Honda has entered into foreign exchange and interest rate agreements to manage currency and interest rate exposures. These agreements include foreign currency forward exchange contracts, currency option contracts, currency swap agreements and interest rate swap agreements. All these derivatives are initially recognized as assets or liabilities and measured at fair value, when Honda becomes a party to the contractual provision of the derivatives. Subsequent changes in fair value of derivatives are recognized in profit or loss in the period of the changes. Honda has not held any derivatives designated as hedging instruments for the years ended March 31, 2022, 2023 and 2024. 4) Offsetting of financial assets and financial liabilities Financial assets and financial liabilities are offset and the net amount is presented in the consolidated statements of financial position, only when Honda currently has a legally enforceable right to offset the recognized amounts, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously.
Inventories	(e) Inventories Inventories are measured at the lower of cost and net realizable value. The cost of inventories includes purchase costs and conversion costs, and it is determined principally by using the first-in first-out method
Equipment on Operating Leases	(f) Equipment on Operating Leases Equipment on operating leases is measured based on the cost model and carried at its cost less accumulated depreciation and impairment losses. A vehicle subject to operating lease is initially measured at its cost. Depreciation of equipment on operating leases is calculated on the straight-line method over the lease term. The depreciable amount is the cost of the vehicle less its residual value. Our most significant finance subsidiary located in the United States determines contractual residual values of operating lease vehicles at lease inception based on expectations of used vehicle values at the end of their lease term. The finance subsidiary in the United States depreciates operating lease vehicles on a straight-line basis over the lease term to the lower of contract residual values or estimated end of term residual values. The finance subsidiary in the United States assesses its estimates for end of term residual values of lease vehicles, at minimum, on a quarterly basis. Adjustments to estimated residual values are made on a straight-line basis over the remaining term of the lease and are recognized as depreciation expense. Lease customers have the option at the end of the lease term to return the vehicle to the dealer or to buy the vehicle for the contractual residual value (or if purchased prior to lease maturity, for the outstanding contractual balance). Returned lease vehicles can be purchased by the grounding dealer for the contractual residual value (or if purchased prior to lease maturity, for the outstanding contractual balance) or a market based price. Returned lease vehicles that are not purchased by the grounding dealers are sold through online and physical auctions. Estimated end of term residual values are dependent on the percentage of leased vehicles expected to be returned by lessees and the expected market values of leased vehicles at the end of their lease terms. Factors considered in this evaluation include, among other factors, economic conditions, external market information on new and used vehicles, historical trends, and recent auction values.
Property, Plant and Equipment	(g) Property, Plant and Equipment Property, plant and equipment is measured based on the cost model and carried at its cost less accumulated depreciation and impairment losses. Property, plant and equipment is initially measured at its cost. Subsequent expenditures on an item of property, plant and equipment acquired, are recognized in the carrying amount of the item, only when it is probable that the expenditure will generate a future economic benefit. Depreciation of property, plant and equipment, except for land that is not subject to depreciation, is calculated on the straight-line method over the estimated useful life. The depreciable amount is the cost of the asset less the respective estimated residual values. The estimated useful lives used in calculating depreciation of property, plant and equipment are mainly as follows: • Buildings and structures: 3 to 50 years • Machinery and equipment: 2 to 20 years The depreciation method, useful lives and residual values of property, plant and equipment are reviewed annually at each fiscal year end, and adjusted prospectively, if appropriate. Property, plant and equipment in the consolidated statements of financial position includes right-of-use right-of-use
Intangible Assets	(h) Intangible Assets Intangible assets are measured based on the cost model and carried at their cost less accumulated amortization and impairment losses. (Research and development) Development expenditure for a product is capitalized only when there is a technical and commercial feasibility of completing the development, Honda has intention, ability and sufficient resources to use the outcome of the development, it is probable that the outcome will generate a future economic benefit, and the cost can be measured reliably. Capitalized development cost is measured at the sum of expenditures for development incurred between when the foregoing conditions for capitalization are initially met and when the development is completed, and includes all directly attributable costs to the development process. Capitalized development cost is amortized using the straight-line method over the expected product life cycle of the developed product ranging mainly from 2 to 6 years. Expenditures on research and other development expenditures which do not meet the foregoing conditions are expensed as incurred. (Other intangible asset) Other intangible assets are initially measured at cost and principally amortized using the straight-line method over their estimated useful lives. Other intangible assets are mainly comprised of software for internal use whose estimated useful lives range from 3 to 5 years. The amortization method and useful lives of intangible assets are reviewed annually at each fiscal year end, and adjusted prospectively, if appropriate.
Lease	(i) Lease At inception of a contract, Honda assesses whether a contract is, or contains, a lease. A contract is, or contains, a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. When Honda has the right to obtain substantially all of the economic benefits from use of the identified asset throughout the period of use and the right to direct the use of the identified asset, the contract conveys the right to control the use of the identified asset. 1) Lease as a lessee A right-of-use right-of-use non-lease non-lease non-lease The right-of-use right-of-use is The lease liability is initially measured at the present value of the lease payments that are not paid at the commencement date, discounted using the interest rate implicit in the lease or, if that rate cannot be readily determined, Honda’s incremental borrowing rate. Lease payments included in the measurement of the lease liability comprise mainly the fixed payments (including the lease payments in an optional renewal period if Honda is reasonably certain to exercise the extension option) and the penalties for termination of a lease unless Honda is reasonably certain not to terminate early. After the initial recognition, the lease liability is measured by increasing the carrying amount to reflect interest that produces a constant periodic rate of interest on the remaining balance of the lease liability and reducing the carrying amount to reflect the lease payments. The lease liability is remeasured if Honda changes its assessment of whether it will exercise an extension or termination option. When the lease liability is remeasured, the amount of the remeasurement of the lease liability is recognized as an adjustment to the right-of-use right-of-use 2) Lease as a lessor For a contract that is, or contains a lease, the lease is classified as a finance lease if it transfers substantially all the risks and rewards incidental to ownership of an underlying asset and the lease other than finance lease is classified as an operating lease. Honda assesses the lease classification of a sub-lease right-of-use The finance subsidiaries of the Company engage in the business of leasing vehicles as a lessor. A receivable from customer held under a finance lease is initially recognized at the amount of net investment in the lease which is the gross investment in the lease discounted at the interest rate implicit in the lease, and included in receivables from financial services in the consolidated statements of financial position. Vehicles subject to operating leases are presented as equipment on operating leases in the consolidated statements of financial position. If a contract contains lease and non-lease
Impairment	(j) Impairment 1) Financial assets measured at amortized cost and debt securities classified into financial assets measured at fair value through other comprehensive income The allowance for impairment losses of financial assets measured at amortized cost other than trade receivables and debt securities classified into financial assets measured at fair value through other comprehensive income is measured at amounts according to the three-stage expected credit loss (ECL) model: Stage 1 12-month Stage 2 Lifetime ECL for financial assets with a significant increase in credit risk since initial recognition but that are not credit-impaired Stage 3 Lifetime ECL for credit-impaired financial assets The allowance for impairment losses of trade receivables is continuously measured at amounts equal to lifetime ECL. Lifetime ECL represents ECL that results from all possible default events over 12-month Receivables from financial services – Allowance for credit losses The allowance for credit losses is management’s estimate of expected credit loss on receivables from financial services. To determine whether credit risk has increased significantly, consumer finance receivables are assessed both individually and collectively. Individual assessments are based on delinquencies. Consumer finance receivables 30 days or greater past due have historically experienced increased default rates and therefore are considered to have a significant increase in credit risk. Collective assessments are performed for groups of consumer finance receivables with shared risk characteristics such as the period of initial recognition, collateral type, original term, and credit score considering relative changes in expected default rates since initial recognition. Dealer finance receivables are assessed at the individual dealership level to determine whether credit risk has increased significantly considering payment performance and other factors such as changes in the financial condition of the dealership and compliance with debt covenants. Our definition of default on receivables from financial services varies depending on internal risk management practices of each of our finance subsidiaries. Our most significant finance subsidiary located in the United States considers delinquencies of 60 days past due to be in default. Collection efforts on consumer finance receivables are escalated after becoming 60 days past due including repossession of the underlying vehicles if it has been determined that the borrower is unable to perform on their obligations. Defaulted consumer finance receivables are considered to be credit-impaired. Dealer finance receivables are considered to be credit-impaired when there is evidence we will be unable to collect all amounts due in accordance with the original contractual terms including significant financial difficulty of the dealership, a breach of contract, such as a default or delinquency, or bankruptcy. At the finance subsidiary in the United States, the estimated uncollectible portion of consumer finance receivables are written-off written-off At the finance subsidiary in the United States, ECL of consumer finance receivables is measured for groups of financial assets with shared risk characteristics by reflecting historical results, current conditions and forward-looking factors such as unemployment rates, used vehicles prices, and consumer debt service burdens. 2) Non-financial At the end of the reporting period, the carrying amount of non-financial For investments accounted for using the equity method, the entire carrying amount of each investment in affiliates and joint ventures is tested for impairment as a single asset, when there is objective evidence that the investments accounted for using the equity method may be impaired. The recoverable amount of an individual asset or a cash-generating unit is the higher of fair value less costs to sell and value in use. Value in use is determined as the present value of future cash flows expected to be derived from an asset or a cash-generating unit. A cash-generating unit is determined as the smallest identifiable group of assets that generate cash inflows which are largely independent of cash inflows from other assets or a group of assets. When it is not possible to estimate the recoverable amount of the individual asset, the recoverable amount of the cash-generating unit to which the asset belongs is estimated. When the carrying amount of an asset or a cash-generating unit exceeds the recoverable amount, the carrying amount is reduced to the recoverable amount and an impairment loss is recognized in profit or loss. An impairment loss for a cash-generating unit is allocated to the assets on the basis of the relative carrying amount of each asset in the unit. An impairment loss recognized for an asset or a cash-generating unit in prior period is reversed, if there is any indication that the impairment loss may have decreased or may no longer exist, and when the recoverable amount of the asset exceeds the carrying amount. If this is the case, the carrying amount of the asset is increased to its recoverable amount, but the increased carrying amount does not exceed the carrying amount (net of depreciation or amortization) calculated on the basis that no impairment loss had occurred in the prior period.
Provisions	(k) Provisions Provisions are recognized when Honda has present legal or constructive obligation as a result of past events, it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation, and a reliable estimate can be made of the amount of the obligation. Provisions are measured based on the best estimate of expenditure required to settle the present obligation at the end of the reporting period. Where the effect of the time value of money is material, a provision is measured at the present value of the expenditures required to settle the obligation. In calculating the present value, a pre-tax
Employee Benefits	(l) Employee Benefits 1) Short-term employee benefits For short-term employee benefits including salaries, bonuses and paid annual leave, when the employees render related services, the amounts expected to be paid in exchange for those services are recognized as expenses. 2) Post-employment benefits Honda has various post-employment benefit plans including defined benefit plans and defined contribution plans. Defined benefit plans For defined benefit plans, the present value of defined benefit obligations less the fair value of plan assets is recognized as either liability or asset in the consolidated statements of financial position. In the case that an entity has a surplus in a defined benefit plan, the recognized asset is limited to present value of any economic benefits available in the form of refunds from the plan or reductions in future contributions to the plan. The present value of defined benefit obligations and service cost are principally determined for each plan using the projected unit credit method. The discount rate is determined by reference to market yields at the end of the reporting period on high quality corporate bonds that are consistent with the currency and estimated term of the post-employment benefit obligation. Net interest on the net defined benefit liability (asset) for the reporting period is determined by multiplying the net defined benefit liability (asset) by the discount rate. Past service cost defined as the change in the present value of the defined benefit obligation resulting from a plan amendment or curtailment is recognized in profit or loss upon occurrence of the plan amendment or curtailment. Honda recognizes the difference arising from remeasurement of present value of the defined benefit Defined contribution plans For defined contribution plans, when the employees render related services, the contribution payables to defined contribution plan are recognized as expenses.
Equity	(m) Equity 1) Common share Common share issued by the Company is classified as equity, and the proceeds from issuance of common share are included in common stock and capital surplus. 2) Treasury stock Treasury stock acquired by Honda is recognized at cost and deducted from equity. When treasury stock is sold, the consideration received is recognized as equity with the difference between the carrying amount and the consideration received included in capital surplus.
Revenue Recognition	(n) Revenue Recognition 1) Sale of products Sales of products are reported by Motorcycle business, Automobile business, Power products and other businesses. For details of the information on each business, see note 4. Honda recognizes revenue when control over products is transferred to customers. This transfer generally corresponds to the date of delivery of products to customers. Revenue is measured based on consideration specified in a contract with customer and excludes amounts collected on behalf of third parties. The total consideration in the contract is allocated to all products and services based on their stand-alone selling prices. The stand-alone selling prices are determined with reference to the selling prices of similar products or services and other reasonably available information. Honda provides dealer incentives, which generally represent discounts provided from Honda to the dealer. Honda also provides incentive programs generally in the form of below-market interest rate loans or lease programs for the retail customers to enhance dealer’s sales activities. The amount incurred for these programs is calculated based on the difference between the interest or lease rate offered to retail customers and the market-based interest or lease rate. These incentives are considered variable consideration when determining the transaction price and they are deducted from sales revenue recognized when products are sold to the dealers. Sales revenue is recognized only to the extent that it is highly probable that a significant reversal will not occur when the uncertainty associated with the variable consideration is subsequently resolved. Customers usually pay consideration for sales of products within 30 days from the transfers of control over the products to customers. In addition, product sales contracts with customers include warranty clauses to guarantee that the products comply with agreed-upon specifications and Honda recognizes provisions for product warranties to meet these guarantees. For more information on product warranties, see note 17. 2) Rendering of financial services Interest income from receivables from financial services is recognized using the effective interest method. Finance receivable origination fees and certain direct origination costs are included in the calculation of the effective interest rate, and the net fee or cost is amortized using the effective interest method over the contractual term of the finance receivables. The finance subsidiaries of the Company offer financial services that contain a lease. Interest income from receivables held under a finance lease is recognized using the effective interest method. When Honda is the manufacturer or dealer lessor, sales revenue and the corresponding cost for a portion identified as sale of products is recognized in profit or loss in accordance with the policy on revenue recognition for sale of products. Revenue from operating leases is recognized on a straight-line basis over the term of the lease.
Income Taxes	(o) Income Taxes Income tax expenses are presented as the aggregate amount of current taxes and deferred taxes. Current taxes and deferred taxes are recognized in profit or loss, except for the tax arising from a transaction which is recognized either in other comprehensive income or directly in equity. Current taxes are measured at the amount expected to be paid to (or recovered from) the taxation authorities in respect of the taxable profit (or tax loss) for the reporting period, using the tax rates and tax laws enacted or substantively enacted at the end of the reporting period. Deferred tax assets and liabilities are recognized for future tax consequences attributable to temporary differences between the carrying amount of assets or liabilities in the consolidated statements of financial position and the tax base of the assets or liabilities and carryforward of unused tax losses and tax credits. Deferred tax assets are recognized to the extent that it is probable that taxable profit will be available against which the deductible temporary differences, unused tax losses, and unused tax credits can be utilized. Deferred tax liabilities for taxable temporary differences related to investments in subsidiaries and affiliates, and interest in joint ventures are not recognized to the extent that Honda is able to control the timing of the reversal of the temporary differences and it is probable that they will not reverse in the foreseeable future. Deferred tax assets for deductible temporary differences arising from investments in subsidiaries and affiliates, and interest in joint ventures are recognized to the extent that it is probable that the temporary differences will reverse in the foreseeable future and taxable profit will be available against which they can be utilized. Deferred tax assets and liabilities are measured at the tax rates that are expected to apply in the period when the assets are realized or the liabilities are settled, based on the tax rates and tax laws enacted or substantively enacted at the end of the reporting period. The measurement of deferred tax assets and liabilities reflects the tax consequences that would follow from the manner in which Honda expects, at the end of reporting period, to recover or settle the carrying amount of its assets and liabilities. Honda reviews the carrying amount of deferred tax assets at the end of each reporting period, and reduces the carrying amount of deferred tax assets to the extent that it is no longer probable that sufficient taxable profit will be available to allow the benefit of part or all of that deferred tax assets to be utilized. Deferred tax assets and deferred tax liabilities are offset, only when Honda has a legally enforceable right to set off current tax assets against current tax liabilities, and the same taxation authority levies income taxes either on the same taxable entity or on different taxable entity which intends either to settle current tax liabilities and assets on a net basis or to realize the assets and settle the liabilities simultaneously. Honda reflects the effect of uncertainty in the consolidated financial statements if Honda concludes it is not probable that the taxation authority will accept the tax treatment. Honda has adopted amendments to IAS 12 “International Tax Reform—Pillar Two Model Rules” issued on May 23, 2023, and has neither recognized nor disclosed information about deferred tax assets and liabilities related to the income taxes arising from tax law enacted or substantively enacted to implement the Pillar Two model rules published by the Organisation for Economic Co-operation top-up
Earnings per Share	(p) Earnings per Share Basic earnings per share is calculated by dividing profit for the year attributable to owners of the parent by the weighted average number of common shares outstanding during the period.

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
Segment Information (Tables)	Mar. 31, 2024
TextBlock1 [Abstract]
Summary of Segment Information	Segment information as of and for the years ended March 31, 2022, 2023 and 2024 is as follows: As of and for the year ended March 31, 2022 Yen (millions) Motorcycle Automobile Financial Power Segment Reconciling Consolidated Sales revenue: External customers ¥ 2,185,253 ¥ 9,147,498 ¥ 2,820,667 ¥ 399,278 ¥ 14,552,696 ¥ — ¥ 14,552,696 Intersegment — 213,095 2,656 22,480 238,231 (238,231 ) — Total 2,185,253 9,360,593 2,823,323 421,758 14,790,927 (238,231 ) 14,552,696 Segment profit (loss) ¥ 311,492 ¥ 236,207 ¥ 333,032 ¥ (9,499 ) ¥ 871,232 ¥ — ¥ 871,232 Share of profit of investments accounted for using the equity method ¥ 33,510 ¥ 168,415 ¥ — ¥ 587 ¥ 202,512 ¥ — ¥ 202,512 Segment assets 1,448,926 9,563,553 11,318,756 475,124 22,806,359 1,166,794 23,973,153 Investments accounted for using the equity method 104,535 855,309 — 7,560 967,404 — 967,404 Depreciation and amortization 65,423 510,755 883,712 17,018 1,476,908 — 1,476,908 Capital expenditures 49,203 410,169 2,028,700 15,748 2,503,820 — 2,503,820 Impairment losses on non-financial (23 ) 13,097 1,874 276 15,224 — 15,224 Provision (reversal) for credit and lease residual losses on receivables from financial services — — 9,282 — 9,282 — 9,282 As of and for the year ended March 31, 2023 Yen (millions) Motorcycle Automobile Financial Power Segment Reconciling Consolidated Sales revenue: External customers ¥ 2,908,983 ¥ 10,593,519 ¥ 2,954,098 ¥ 451,125 ¥ 16,907,725 ¥ — ¥ 16,907,725 Intersegment — 188,198 2,046 25,307 215,551 (215,551 ) — Total 2,908,983 10,781,717 2,956,144 476,432 17,123,276 (215,551 ) 16,907,725 Segment profit (loss) ¥ 488,709 ¥ (16,629 ) ¥ 285,857 ¥ 22,832 ¥ 780,769 ¥ — ¥ 780,769 Share of profit of investments accounted for using the equity method ¥ 49,119 ¥ 66,973 ¥ — ¥ 1,353 ¥ 117,445 ¥ — ¥ 117,445 Segment assets 1,580,521 10,082,519 11,197,017 480,166 23,340,223 1,329,844 24,670,067 Investments accounted for using the equity method 110,665 795,973 — 9,308 915,946 — 915,946 Depreciation and amortization 65,746 600,617 908,942 21,571 1,596,876 — 1,596,876 Capital expenditures 59,101 613,351 1,546,683 14,386 2,233,521 — 2,233,521 Impairment losses on non-financial 4,662 24,777 5,259 91 34,789 — 34,789 Provision (reversal) for credit and lease residual losses on receivables from financial services — — 27,018 — 27,018 — 27,018 As of and for the year ended March 31, 2024 Yen (millions) Motorcycle Automobile Financial Power Segment Reconciling Consolidated Sales revenue: External customers ¥ 3,220,168 ¥ 13,567,565 ¥ 3,248,808 ¥ 392,261 ¥ 20,428,802 ¥ — ¥ 20,428,802 Intersegment — 223,950 2,976 30,068 256,994 (256,994 ) — Total 3,220,168 13,791,515 3,251,784 422,329 20,685,796 (256,994 ) 20,428,802 Segment profit (loss) ¥ 556,232 ¥ 560,649 ¥ 273,978 ¥ (8,882 ) ¥ 1,381,977 ¥ — ¥ 1,381,977 Share of profit of investments accounted for using the equity method ¥ 53,843 ¥ 55,392 ¥ — ¥ 1,582 ¥ 110,817 ¥ — ¥ 110,817 Segment assets 2,047,270 11,690,446 14,118,371 585,301 28,441,388 1,332,762 29,774,150 Investments accounted for using the equity method 119,598 1,076,481 — 10,889 1,206,968 — 1,206,968 Depreciation and amortization 72,590 655,250 834,246 17,400 1,579,486 — 1,579,486 Capital expenditures 74,006 598,475 2,451,930 16,768 3,141,179 — 3,141,179 Impairment losses on non-financial assets 33 44,652 14,646 61 59,392 — 59,392 Provision (reversal) for credit and lease residual losses on receivables from financial services — — 50,057 — 50,057 — 50,057 Explanatory notes: 1. Segment profit (loss) of each segment is measured in a consistent manner with consolidated operating profit, which is profit before income taxes before share of profit of investments accounted for using the equity method and finance income and finance costs. Expenses not directly associated with specific segments are allocated based on the most reasonable measures applicable. 2. Segment assets of each segment are defined as total assets including investments accounted for using the equity method, derivatives, and deferred tax assets. Segment assets are based on those directly associated with each segment and those not directly associated with specific segments are allocated based on the most reasonable measures applicable except for the corporate assets described below. 3. Intersegment sales revenues are generally made at values that approximate arm’s-length 4. Reconciling items include elimination of intersegment transactions and balances as well as unallocated corporate assets. Unallocated corporate assets, included in reconciling items as of March 31, 2022, 2023 and 2024 amounted to ¥1,319,995 million, ¥1,462,656 million and ¥1,573,834 million, respectively, which consist primarily of the Company’s cash and cash equivalents and financial assets measured at fair value through other comprehensive income. 5. Provisions for product warranties accrued for the years ended March 31, 2022, 2023 and 2024 are ¥118,378 million, ¥289,850 million and ¥536,590 million, respectively. These are mainly included in Automobile business. 6. The amounts of write-down of inventories recognized as an expense for the years ended March 31, 2022, 2023 and 2024 are ¥11,295 million, ¥8,400 million and ¥12,220 million respectively. These are related to Automobile business and aircraft and aircraft engines, which are included in Power products and other businesses. 7. Right-of-use
Sales Revenue by Product or Service Groups	Sales revenue by product or service groups of Honda for the years ended March 31, 2022, 2023 and 2024 is as follows: Yen (millions) 2022 2023 2024 Motorcycles, a ll-terrain side-by-sides ¥ 2,185,253 ¥ 2,908,983 ¥ 3,220,168 Automobiles and relevant parts 10,582,764 12,093,972 15,227,546 Financial services 1,385,401 1,453,645 1,588,827 Power products and relevant parts 294,577 360,385 292,563 Others 104,701 90,740 99,698 Total ¥ 14,552,696 ¥ 16,907,725 ¥ 20,428,802
Sales Revenue and Carrying Amounts of Non-current Assets Other Than Financial Instruments and Deferred Tax Assets Based on Location	The sales revenue and carrying amounts of non-current As of and for the year ended March 31, 2022 Yen (millions) Japan United Other Total Sales revenue ¥ 2,354,532 ¥ 6,728,800 ¥ 5,469,364 ¥ 14,552,696 Non-current ¥ 3,036,832 ¥ 4,490,562 ¥ 1,768,697 ¥ 9,296,091 As of and for the year ended March 31, 2023 Yen (millions) Japan United Other Total Sales revenue ¥ 2,409,584 ¥ 7,905,936 ¥ 6,592,205 ¥ 16,907,725 Non-current ¥ 2,937,148 ¥ 4,373,329 ¥ 1,728,475 ¥ 9,038,952 As of and for the year ended March 31, 2024 Yen (millions) Japan United Other Total Sales revenue ¥ 2,634,505 ¥ 10,343,985 ¥ 7,450,312 ¥ 20,428,802 Non-current ¥ 3,054,330 ¥ 4,914,193 ¥ 1,822,125 ¥ 9,790,648

Cash and Cash Equivalents (Tabl

Cash and Cash Equivalents (Tables)	12 Months Ended
Cash and Cash Equivalents (Tables)	Mar. 31, 2024
TextBlock1 [Abstract]
Summary of Cash and Cash Equivalents	Cash and cash equivalents as of March 31, 2023 and 2024 consist of the following: Yen (millions) 2023 2024 Cash and deposits ¥ 2,822,949 ¥ 3,381,610 Cash equivalents 980,065 1,572,955 Total ¥ 3,803,014 ¥ 4,954,565

Trade Receivables (Tables)

Trade Receivables (Tables) - Trade receivables [member]	12 Months Ended
Trade Receivables (Tables) - Trade receivables [member]	Mar. 31, 2024
Statement [LineItems]
Summary of Financial Assets	Trade receivables as of March 31, 2023 and 2024 consist of the following: Yen (millions) 2023 2024 Trade accounts and notes receivable ¥ 900,312 ¥ 986,390 Other 168,579 262,102 Allowance for impairment losses (8,620 ) (8,402 ) Total ¥ 1,060,271 ¥ 1,240,090
Changes in Allowance for Doubtful Accounts	The changes in the allowance for impairment losses on trade receivables for the years ended March 31, 2022, 2023 and 2024 are as follows: Yen (millions) 2022 2023 2024 Balance at beginning of year ¥ 10,521 ¥ 8,845 ¥ 8,620 Remeasurement ¥ 260 ¥ 297 ¥ 274 Write-offs (2,648 ) (757 ) (1,114 ) Exchange differences on translating foreign operations 712 235 622 Balance at end of year ¥ 8,845 ¥ 8,620 ¥ 8,402

Receivables from Financial Se_2

Receivables from Financial Services (Tables)	12 Months Ended
Receivables from Financial Services (Tables)	Mar. 31, 2024
Statement [LineItems]
Summary of Receivables from Financial Services	Receivables from financial services as of March 31, 2023 and 2024 consist of the following: Yen (millions) 2023 2024 Consumer finance receivables: Retail ¥ 5,363,260 ¥ 7,330,459 Finance lease 174,256 230,139 Dealer finance receivables: Wholesale 421,166 707,035 Subtotal ¥ 5,958,682 ¥ 8,267,633 Allowance for credit losses ¥ (48,652 ) ¥ (68,999 ) Unearned interest income and fees (15,278 ) (23,364 ) Total ¥ 5,894,752 ¥ 8,175,270 Current assets ¥ 1,899,493 ¥ 2,558,594 Non-current 3,995,259 5,616,676 Total ¥ 5,894,752 ¥ 8,175,270
Lease payments receivable under the finance leases by maturity	Finance lease receivables The lease payments receivable under the finance leases by maturity as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Within 1 year ¥ 32,525 ¥ 36,880 Between 1 and 2 years 33,924 42,831 Between 2 and 3 years 20,381 26,085 Between 3 and 4 years 13,497 18,064 Between 4 and 5 years 4,020 6,150 Later than 5 years 5,008 8,414 Undiscounted lease payments receivable ¥ 109,355 ¥ 138,424 Unearned finance income ¥ (8,417 ) ¥ (12,134 ) Unguaranteed residual value ¥ 58,040 ¥ 80,485 Net investment in the lease ¥ 158,978 ¥ 206,775
Receivables from financial services [Member]
Statement [LineItems]
Changes in Allowance for Doubtful Accounts	The changes in the allowance for credit losses on receivables from financial services for the years ended March 31, 2022, 2023 and 2024 are as follows: For the years ended March 31, 2022, 2023 and 2024 Yen (millions) 12-month ECL Lifetime ECL Total Not credit-impaired Credit-impaired Retail: Balance as of April 1, 2021 ¥ 23,480 ¥ 5,923 ¥ 4,883 ¥ 34,286 Remeasurement ¥ (2,513 ) ¥ (925 ) ¥ 13,701 ¥ 10,263 Write-offs — — (12,256 ) (12,256 ) Exchange differences on translating foreign operations 2,822 516 1,136 4,474 Balance as of March 31, 2022 ¥ 23,789 ¥ 5,514 ¥ 7,464 ¥ 36,767 Remeasurement ¥ 868 ¥ 5,288 ¥ 20,673 ¥ 26,829 Write-offs — — (19,942 ) (19,942 ) Exchange differences on translating foreign operations 1,810 270 349 2,429 Balance as of March 31, 2023 ¥ 26,467 ¥ 11,072 ¥ 8,544 ¥ 46,083 Remeasurement ¥ 6,823 ¥ 1,732 ¥ 40,899 ¥ 49,454 Write-offs — — (36,663 ) (36,663 ) Exchange differences on translating foreign operations 3,849 1,474 1,282 6,605 Balance as of March 31, 2024 ¥ 37,139 ¥ 14,278 ¥ 14,062 ¥ 65,479 Finance lease: Balance as of April 1, 2021 ¥ 470 ¥ 184 ¥ 159 ¥ 813 Remeasurement ¥ (339 ) ¥ (98 ) ¥ 182 ¥ (255 ) Write-offs — — (97 ) (97 ) Exchange differences on translating foreign operations 8 6 12 26 Balance as of March 31, 2022 ¥ 139 ¥ 92 ¥ 256 ¥ 487 Remeasurement ¥ 49 ¥ (28 ) ¥ (24 ) ¥ (3 ) Write-offs — — (35 ) (35 ) Exchange differences on translating foreign operations 4 5 7 16 Balance as of March 31, 2023 ¥ 192 ¥ 69 ¥ 204 ¥ 465 Remeasurement ¥ 46 ¥ 15 ¥ 16 ¥ 77 Write-offs — — (43 ) (43 ) Exchange differences on translating foreign operations 17 10 29 56 Balance as of March 31, 2024 ¥ 255 ¥ 94 ¥ 206 ¥ 555 Yen (millions) 12-month ECL Lifetime ECL Total Not credit-impaired Credit-impaired Wholesale: Balance as of April 1, 2021 ¥ 1,741 ¥ 62 ¥ 464 ¥ 2,267 Remeasurement ¥ (649 ) ¥ (46 ) ¥ (31 ) ¥ (726 ) Write-offs — — 30 30 Exchange differences on translating foreign operations 84 1 153 238 Balance as of March 31, 2022 ¥ 1,176 ¥ 17 ¥ 616 ¥ 1,809 Remeasurement ¥ (263 ) ¥ (8 ) ¥ 463 ¥ 192 Write-offs — — 33 33 Exchange differences on translating foreign operations 63 1 6 70 Balance as of March 31, 2023 ¥ 976 ¥ 10 ¥ 1,118 ¥ 2,104 Remeasurement ¥ 377 ¥ 49 ¥ 100 ¥ 526 Write-offs — — 6 6 Exchange differences on translating foreign operations 149 3 177 329 Balance as of March 31, 2024 ¥ 1,502 ¥ 62 ¥ 1,401 ¥ 2,965 Total: Balance as of April 1, 2021 ¥ 25,691 ¥ 6,169 ¥ 5,506 ¥ 37,366 Remeasurement ¥ (3,501 ) ¥ (1,069 ) ¥ 13,852 ¥ 9,282 Write-offs — — (12,323 ) (12,323 ) Exchange differences on translating foreign operations 2,914 523 1,301 4,738 Balance as of March 31, 2022 ¥ 25,104 ¥ 5,623 ¥ 8,336 ¥ 39,063 Remeasurement ¥ 654 ¥ 5,252 ¥ 21,112 ¥ 27,018 Write-offs — — (19,944 ) (19,944 ) Exchange differences on translating foreign operations 1,877 276 362 2,515 Balance as of March 31, 2023 ¥ 27,635 ¥ 11,151 ¥ 9,866 ¥ 48,652 Remeasurement ¥ 7,246 ¥ 1,796 ¥ 41,015 ¥ 50,057 Write-offs — — (36,700 ) (36,700 ) Exchange differences on translating foreign operations 4,015 1,487 1,488 6,990 Balance as of March 31, 2024 ¥ 38,896 ¥ 14,434 ¥ 15,669 ¥ 68,999

Other Financial Assets (Tables)

Other Financial Assets (Tables)	12 Months Ended
Other Financial Assets (Tables)	Mar. 31, 2024
Statement [LineItems]
Summary of Other Financial Assets	Other financial assets as of March 31, 2023 and 2024 consist of the following: Yen (millions) 2023 2024 Financial assets measured at amortized cost: Receivables other than trade receivables and receivables from financial services ¥ 164,503 ¥ 123,359 Debt securities 85,235 69,751 Guaranty deposits 12,689 13,662 Restricted cash 65,723 118,129 Other 4,167 4,422 Allowance for impairment losses (2,988 ) (2,748 ) Financial assets measured at fair value through other comprehensive income: Debt securities 26,555 30,567 Equity securities 475,138 522,703 Financial assets measured at fair value through profit or loss: Derivatives 185,968 194,187 Debt securities 101,972 123,693 Total ¥ 1,118,962 ¥ 1,197,725 Current assets ¥ 263,892 ¥ 229,583 Non-current 855,070 968,142 Total ¥ 1,118,962 ¥ 1,197,725
Major Securities Included in Equity Securities Designated as Financial Assets Measured at Fair Value Through Other Comprehensive Income	Major securities included in the equity securities designated as financial assets measured at fair value through other comprehensive income as of March 31, 2023 and 2024 are as follo ws: As of March 31, 2023 Yen (millions) Fair value Contemporary Amperex Technology Co., Ltd. ¥ 181,366 GM Cruise Holdings LLC 115,556 Stanley Electric Co., Ltd. 49,051 Mitsubishi UFJ Financial Group, Inc. 12,296 Tokio Marine Holdings, Inc. 8,349 Chubb Limited 7,998 As of March 31, 2024 Yen (millions) Fair value Contemporary Amperex Technology Co., Ltd. ¥ 163,986 GM Cruise Holdings LLC 65,802 Renesas Electronics Corporation 47,139 Stanley Electric Co., Ltd. 47,110 Mitsubishi UFJ Financial Group, Inc. 22,580 GS Yuasa Corporation 15,464
Other financial assets [member]
Statement [LineItems]
Summary of Changes in Allowance for Impairment Losses	The changes in the allowance for impairment losses on other financial assets for the years ended March 31, 2022, 2023 and 2024 are as follows: Yen (millions) 2022 2023 2024 Balance at beginning of year ¥ 3,358 ¥ 3,212 ¥ 2,988 Remeasurement ¥ 42 ¥ 232 ¥ 97 Write-offs (191 ) (461 ) (345 ) Exchange differences on translating foreign operations 3 5 8 Balance at end of year ¥ 3,212 ¥ 2,988 ¥ 2,748

Inventories (Tables)

Inventories (Tables)	12 Months Ended
Inventories (Tables)	Mar. 31, 2024
TextBlock1 [Abstract]
Summary of Inventories	Inventories as of March 31, 2023 and 2024 consist of the following: Yen (millions) 2023 2024 Finished goods ¥ 1,154,926 ¥ 1,521,673 Work in process 95,041 93,412 Raw materials 917,217 827,884 Total ¥ 2,167,184 ¥ 2,442,969

Investments Accounted for Usi_2

Investments Accounted for Using the Equity Method (Tables)	12 Months Ended
Investments Accounted for Using the Equity Method (Tables)	Mar. 31, 2024
TextBlock1 [Abstract]
Equity in Affiliates and Joint Ventures	Honda’s equity in affiliates and joint ventures as of March 31, 2023 and 2024 is as follows: Yen (millions) 2023 2024 Investments accounted for using the equity method: Affiliates ¥ 499,942 ¥ 715,901 Joint ventures 416,004 491,067 Total ¥ 915,946 ¥ 1,206,968 Honda’s equity of undistributed earnings: Affiliates ¥ 87,284 ¥ 111,787 Joint ventures 259,675 279,915 Total ¥ 346,959 ¥ 391,702
Share of Comprehensive Income of Affiliates and Joint Ventures	Honda’s share of comprehensive income of affiliates and joint ventures for the years ended March 31, 2022, 2023 and 2024 is as follows: Yen (millions) 2022 2023 2024 Profit for the year: Affiliates ¥ (17,844 ) ¥ (81,504 ) ¥ 26,490 Joint ventures 220,356 198,949 84,327 Total ¥ 202,512 ¥ 117,445 ¥ 110,817 Other comprehensive income: Affiliates ¥ 26,673 ¥ 25,920 ¥ 31,797 Joint ventures 52,560 4,801 30,856 Total ¥ 79,233 ¥ 30,721 ¥ 62,653 Comprehensive income for the year: Affiliates ¥ 8,829 ¥ (55,584 ) ¥ 58,287 Joint ventures 272,916 203,750 115,183 Total ¥ 281,745 ¥ 148,166 ¥ 173,470
Summarized Consolidated Financial Information	Summarized consolidated financial information of Dongfeng Honda Automobile Co., Ltd. as of March 31, 2023 and 2024 is as follows: Yen (millions) 2023 2024 Current assets ¥ 615,524 ¥ 602,784 Non-current 279,691 361,830 Total assets 895,215 964,614 Current liabilities 520,257 552,719 Non-current 31,680 37,016 Total liabilities 551,937 589,735 Total equity ¥ 343,278 ¥ 374,879 Honda’s share of total equity (50%) 171,639 187,439 Equity method adjustments (636 ) (612 ) Carrying amount of its interest in the joint venture ¥ 171,003 ¥ 186,827 Cash and cash equivalents included in current assets ¥ 99,862 ¥ 163,009 Financial liabilities (excluding trade payables and provisions) included in current liabilities 6,803 6,549 Summarized consolidated financial information of Dongfeng Honda Automobile Co., Ltd. for the years ended March 31, 2022, 2023 and 2024 is as follows: Yen (millions) 2022 2023 2024 Sales revenue ¥ 1,994,534 ¥ 1,777,882 ¥ 1,816,390 Interest income 10,653 8,441 5,653 Depreciation and amortization 25,996 28,052 29,311 Income tax expense 60,868 52,826 8,207 Profit for the year 182,989 157,914 27,985 Other comprehensive income 44,812 3,256 24,398 Comprehensive income for the year ¥ 227,801 ¥ 161,170 ¥ 52,383 Comprehensive income for the year (50%) 113,901 80,585 26,192 Equity method adjustments 607 67 69 Honda’s share of comprehensive income for the year ¥ 114,508 ¥ 80,652 ¥ 26,261 Dividend from the joint venture to Honda ¥ 79,191 ¥ 86,506 ¥ 10,668
Combined Financial Information of Affiliates and Joint Ventures	Combined financial information in respect of affiliates as of March 31, 2023 and 2024, and for the years ended March 31, 2022, 2023 and 2024 is as follows: Yen (millions) For the year ended March 31, 2022 Motorcycle Automobile Power Products Total Sales revenue ¥ 173,696 ¥ 3,120,190 ¥ 7,146 ¥ 3,301,032 Profit for the year 7,233 73,169 996 81,398 Yen (millions) As of and for the year ended March 31, 2023 Motorcycle Automobile Power Products Total Current assets ¥ 64,051 ¥ 1,746,374 ¥ 18,441 ¥ 1,828,866 Non-current 25,654 2,050,459 24,110 2,100,223 Total assets 89,705 3,796,833 42,551 3,929,089 Current liabilities 29,887 1,205,478 4,319 1,239,684 Non-current 3,109 539,040 655 542,804 Total liabilities 32,996 1,744,518 4,974 1,782,488 Total equity ¥ 56,709 ¥ 2,052,315 ¥ 37,577 ¥ 2,146,601 Sales revenue ¥ 189,332 ¥ 3,800,943 ¥ 9,187 ¥ 3,999,462 Profit for the year 10,038 (45,204 ) 1,901 (33,265 ) Yen (millions) As of and for the year ended March 31, 2024 Motorcycle Automobile Power Products Total Current assets ¥ 72,203 ¥ 1,988,023 ¥ 22,696 ¥ 2,082,922 Non-current 24,867 2,400,612 26,272 2,451,751 Total assets 97,070 4,388,635 48,968 4,534,673 Current liabilities 29,538 1,348,062 5,433 1,383,033 Non-current 3,542 701,643 685 705,870 Total liabilities 33,080 2,049,705 6,118 2,088,903 Total equity ¥ 63,990 ¥ 2,338,930 ¥ 42,850 ¥ 2,445,770 Sales revenue ¥ 178,964 ¥ 4,425,320 ¥ 10,335 ¥ 4,614,619 Profit for the year 12,744 38,348 2,193 53,285 Combined financial information in respect of joint ventures as of March 31, 2023 and 2024, and for the years ended March 31, 2022, 2023 and 2024 is as follows: Yen (millions) For the year ended March 31, 2022 Motorcycle Automobile Power Products Total Sales revenue ¥ 811,764 ¥ 4,612,394 ¥ 3,940 ¥ 5,428,098 Profit for the year 62,907 375,642 363 438,912 Yen (millions) As of and for the year ended March 31, 2023 Motorcycle Automobile Power Products Total Current assets ¥ 337,603 ¥ 1,579,996 ¥ 3,677 ¥ 1,921,276 Non-current 134,567 544,319 989 679,875 Total assets 472,170 2,124,315 4,666 2,601,151 Current liabilities 275,607 1,397,048 1,791 1,674,446 Non-current 23,272 74,136 2,184 99,592 Total liabilities 298,879 1,471,184 3,975 1,774,038 Total equity ¥ 173,291 ¥ 653,131 ¥ 691 ¥ 827,113 Sales revenue ¥ 1,071,031 ¥ 4,360,348 ¥ 6,022 ¥ 5,437,401 Profit for the year 93,766 304,119 1,779 399,664 Yen (millions) As of and for the year ended March 31, 2024 Motorcycle Automobile Power Products Total Current assets ¥ 376,630 ¥ 1,206,741 ¥ 3,852 ¥ 1,587,223 Non-current 201,692 682,236 880 884,808 Total assets 578,322 1,888,977 4,732 2,472,031 Current liabilities 320,335 1,026,763 1,875 1,348,973 Non-current 72,977 72,063 2,441 147,481 Total liabilities 393,312 1,098,826 4,316 1,496,454 Total equity ¥ 185,010 ¥ 790,151 ¥ 416 ¥ 975,577 Sales revenue ¥ 1,103,578 ¥ 4,003,276 ¥ 4,183 ¥ 5,111,037 Profit for the year 100,242 67,056 1,674 168,972

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
Property, Plant and Equipment (Tables)	Mar. 31, 2024
Equipment on operating leases [member]
Statement [LineItems]
Summary of Property, Plant and Equipment	The changes in cost, accumulated depreciat io , and are as follows: (Cost) Yen (millions) Balance as of April 1, 2022 ¥ 6,667,137 Additions ¥ 1,543,448 Sales or disposal (2,357,684 ) Exchange differences on translating foreign operations 414,052 Other — Balance as of March 31, 2023 ¥ 6,266,953 Additions ¥ 2,448,469 Sales or disposal (2,662,279 ) Exchange differences on translating foreign operations 625,564 Other — Balance as of March 31, 2024 ¥ 6,678,707 (Accumulated depreciation and impairment losses) Yen (millions) Balance as of April 1, 2022 ¥ (1,508,008 ) Depreciation ¥ (904,778 ) Sales or disposal 955,122 Exchange differences on translating foreign operations (77,740 ) Other (5,257 ) Balance as of March 31, 2023 ¥ (1,540,661 ) Depreciation ¥ (829,868 ) Sales or disposal 1,043,821 Exchange differences on translating foreign operations (134,587 ) Other (14,644 ) Balance as of March 31, 2024 ¥ (1,475,939 ) (Carrying amount) Yen (millions) Balance as of March 31, 2023 ¥ 4,726,292 Balance as of March 31, 2024 5,202,768
Future Minimum Lease Payments Expected to be Received under Non-cancellable Operating Leases to be Received	Future lease payments expected to be received under the operating leases by maturity as of March 31, 2023 and 2024 consist of the following: Yen (millions) 2023 2024 Within 1 year ¥ 737,110 ¥ 810,011 Between 1 and 2 years 458,830 614,883 Between 2 and 3 years 220,722 314,854 Between 3 and 4 years 78,727 108,572 Between 4 and 5 years 25,641 31,106 Later than 5 years 10,148 10,427 Total ¥ 1,531,178 ¥ 1,889,853
Property, plant and equipment [member]
Statement [LineItems]
Summary of Property, Plant and Equipment	The changes in cost, accumulated depreciation and impairment losses, and the carrying amounts of property, plant and equipment for the years ended March 31, 2023 and 2024 are as follows: (Cost) Yen (millions) Land Buildings and Machinery and Construction in Total Balance as of April 1, 2022 ¥ 645,472 ¥ 2,698,266 ¥ 6,147,929 ¥ 237,574 ¥ 9,729,241 Additions 10,366 35,335 87,630 444,732 578,063 Reclassification 4,198 47,021 476,942 (528,161 ) — Sales or disposal (9,980 ) (80,024 ) (297,580 ) — (387,584 ) Deconsolidation (3,580 ) (19,932 ) (82,733 ) (3,384 ) (109,629 ) Exchange differences on translating foreign operations 7,167 84,744 285,024 16,047 392,982 Other 275 (6,556 ) (1,572 ) (2,029 ) (9,882 ) Balance as of March 31, 2023 ¥ 653,918 ¥ 2,758,854 ¥ 6,615,640 ¥ 164,779 ¥ 10,193,191 Additions 8,328 35,397 113,006 325,741 482,472 Reclassification 8,129 74,106 199,180 (281,415 ) — Sales or disposal (4,078 ) (39,594 ) (285,196 ) — (328,868 ) Deconsolidation (7,346 ) (36,633 ) (109,783 ) (4,149 ) (157,911 ) Exchange differences on translating foreign operations 15,409 165,930 609,316 17,450 808,105 Other 202 (3,662 ) 13,886 (2,527 ) 7,899 Balance as of March 31, 2024 ¥ 674,562 ¥ 2,954,398 ¥ 7,156,049 ¥ 219,879 ¥ 11,004,888 (Accumulated depreciation and impairment losses) Yen (millions) Land Buildings and Machinery and Construction in Total Balance as of April 1, 2022 ¥ (22,919 ) ¥ (1,633,202 ) ¥ (4,992,710 ) ¥ (1,003 ) ¥ (6,649,834 ) Depreciation (6,025 ) (96,136 ) (410,340 ) — (512,501 ) Sales or disposal 6,090 72,290 274,535 — 352,915 Deconsolidation 2,580 18,743 80,882 3,384 105,589 Exchange differences on translating foreign operations (87 ) (48,748 ) (245,648 ) 126 (294,357 ) Other (2,863 ) (7,768 ) (12,857 ) (3,406 ) (26,894 ) Balance as of March 31, 2023 ¥ (23,224 ) ¥ (1,694,821 ) ¥ (5,306,138 ) ¥ (899 ) ¥ (7,025,082 ) Depreciation (6,086 ) (107,219 ) (450,649 ) — (563,954 ) Sales or disposal 3,002 31,498 260,947 — 295,447 Deconsolidation 1,425 24,264 89,502 331 115,522 Exchange differences on translating foreign operations (334 ) (98,578 ) (494,162 ) 1 (593,073 ) Other (225 ) (594 ) 1,318 166 665 Balance as of March 31, 2024 ¥ (25,442 ) ¥ (1,845,450 ) ¥ (5,899,182 ) ¥ (401 ) ¥ (7,770,475 ) (Carrying amount) Yen (millions) Land Buildings and Machinery and Construction in Total Balance as of March 31, 2023 ¥ 630,694 ¥ 1,064,033 ¥ 1,309,502 ¥ 163,880 ¥ 3,168,109 Balance as of March 31, 2024 649,120 1,108,948 1,256,867 219,478 3,234,413
Summary of carrying amounts of the right-of-use assets	The changes in the carrying amounts of the right-of-use Yen (millions) Land Buildings and Machinery and Total Balance as of April 1, 2022 ¥ 81,637 ¥ 130,181 ¥ 95,882 ¥ 307,700 Additions 10,386 30,294 43,474 84,154 Depreciation (6,025 ) (15,887 ) (51,193 ) (73,105 ) Other 370 (8,529 ) (2,245 ) (10,404 ) Balance as of March 31, 2023 ¥ 86,368 ¥ 136,059 ¥ 85,918 ¥ 308,345 Additions 7,887 28,103 58,496 94,486 Depreciation (6,086 ) (18,433 ) (53,389 ) (77,908 ) Other 3,017 (8,131 ) 3,202 (1,912 ) Balance as of March 31, 2024 ¥ 91,186 ¥ 137,598 ¥ 94,227 ¥ 323,011

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
Intangible Assets (Tables)	Mar. 31, 2024
TextBlock1 [Abstract]
Changes in Cost, Accumulated Amortization and Impairment Losses, and Carrying Amounts of Intangible Assets	The changes in cost, accumulated amortization and impairment losses, and carrying amounts of intangible assets for the years ended March 31, 2023 and 2024 are as follows: (Cost) Yen (millions) Capitalized Software Other Total Balance as of April 1, 2022 ¥ 1,156,290 ¥ 462,251 ¥ 64,892 ¥ 1,683,433 Additions ¥ — ¥ 12,163 ¥ 35,103 ¥ 47,266 Internally developed 120,811 28,088 — 148,899 Sales or disposal (267,115 ) (5,107 ) (9,741 ) (281,963 ) Exchange differences on translating foreign operations 4,280 15,870 3,503 23,653 Other — 4,285 (336 ) 3,949 Balance as of March 31, 2023 ¥ 1,014,266 ¥ 517,550 ¥ 93,421 ¥ 1,625,237 Additions ¥ — ¥ 13,144 ¥ 41,165 ¥ 54,309 Internally developed 207,519 42,896 — 250,415 Sales or disposal (128,194 ) (16,228 ) (14,826 ) (159,248 ) Exchange differences on translating foreign operations 12,224 36,984 14,517 63,725 Other (4,254 ) 3,636 (3,648 ) (4,266 ) Balance as of March 31, 2024 ¥ 1,101,561 ¥ 597,982 ¥ 130,629 ¥ 1,830,172 (Accumulated amortization and impairment losses) Yen (millions) Capitalized Software Other Total Balance as of April 1, 2022 ¥ (462,641 ) ¥ (359,469 ) ¥ (11,816 ) ¥ (833,926 ) Amortization ¥ (149,659 ) ¥ (29,058 ) ¥ (880 ) ¥ (179,597 ) Sales or disposal 267,115 4,693 938 272,746 Exchange differences on translating foreign operations (719 ) (12,893 ) (758 ) (14,370 ) Other — (1,036 ) 1,846 810 Balance as of March 31, 2023 ¥ (345,904 ) ¥ (397,763 ) ¥ (10,670 ) ¥ (754,337 ) Amortization ¥ (154,780 ) ¥ (30,029 ) ¥ (855 ) ¥ (185,664 ) Sales or disposal 128,194 15,315 219 143,728 Exchange differences on translating foreign operations (1,935 ) (29,418 ) (1,656 ) (33,009 ) Other 2,055 (3,997 ) 741 (1,201 ) Balance as of March 31, 2024 ¥ (372,370 ) ¥ (445,892 ) ¥ (12,221 ) ¥ (830,483 ) (Carrying amount) Yen (millions) Capitalized Software Other Total Balance as of March 31, 2023 ¥ 668,362 ¥ 119,787 ¥ 82,751 ¥ 870,900 Balance as of March 31, 2024 729,191 152,090 118,408 999,689

Trade Payables (Tables)

Trade Payables (Tables)	12 Months Ended
Trade Payables (Tables)	Mar. 31, 2024
TextBlock1 [Abstract]
Summary of Trade Payables	Trade payables as of March 31, 2023 and 2024 consist of the following: Yen (millions) 2023 2024 Trade accounts and notes payable ¥ 1,181,893 ¥ 1,310,944 Other 244,440 298,892 Total ¥ 1,426,333 ¥ 1,609,836

Financing Liabilities (Tables)

Financing Liabilities (Tables)	12 Months Ended
Financing Liabilities (Tables)	Mar. 31, 2024
Statement [LineItems]
Pledged Assets for Financing Liabilities	Pledged assets for financing liabilities as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Trade receivables ¥ 20,811 ¥ 34,137 Receivables from financial services 944,414 1,520,521 Inventories — 4,117 Equipment on operating leases 133,936 86,455 Property, plant and equipment 2,293 2,491 Total ¥ 1,101,454 ¥ 1,647,721
The Changes in Liabilities Arising from Financing Activities	The changes in liabilities arising from financing activities for the years ended March 31, 2022, 2023 and 2024 are as follows: For the year ended March 31, 2022 Yen (millions) Balance Cash flows Cash flows Non-cash Balance Acquisitions Changes Changes Other Short-term financing liabilities ¥ 1,299,347 ¥ (472,420 ) ¥ — ¥ — ¥ 78,863 ¥ — ¥ 753 ¥ 906,543 Long-term financing liabilities 6,421,638 238,060 — — 526,822 — 9,493 7,196,013 Lease liabilities 317,429 (80,165 ) — 84,413 6,096 — (9,015 ) 318,758 Derivative financial liabilities (assets) * (33,883 ) 3,202 (1,296 ) — 3,217 67,396 — 38,636 Total ¥ 8,004,531 ¥ (311,323 ) ¥ (1,296 ) ¥ 84,413 ¥ 614,998 ¥ 67,396 ¥ 1,231 ¥ 8,459,950 For the year ended March 31, 2023 Yen (millions) Balance Cash flows Cash flows Non-cash Balance Acquisitions Changes Changes Other Short-term financing liabilities ¥ 906,543 ¥ 442,534 ¥ — ¥ — ¥ 27,055 ¥ — ¥ (10,357 ) ¥ 1,365,775 Long-term financing liabilities 7,196,013 (1,356,965 ) — — 459,754 — 591 6,299,393 Lease liabilities 318,758 (78,297 ) — 79,202 3,675 — (7,380 ) 315,958 Derivative financial liabilities (assets) * 38,636 (54,158 ) (8,641 ) — 3,718 85,721 — 65,276 Total ¥ 8,459,950 ¥ (1,046,886 ) ¥ (8,641 ) ¥ 79,202 ¥ 494,202 ¥ 85,721 ¥ (17,146) ¥ 8,046,402 For the year ended March 31, 2024 Yen (millions) Balance Cash Cash flows Non-cash Balance Acquisitions Changes Changes Other Short-term financing liabilities ¥ 1,365,775 ¥ (24,382 ) ¥ — ¥ — ¥ 177,888 ¥ — ¥ (2,434 ) ¥ 1,516,847 Long-term financing liabilities 6,299,393 1,593,898 — — 751,082 — 2,337 8,646,710 Lease liabilities 315,958 (80,513 ) — 92,612 9,509 — (5,160 ) 332,406 Derivative financial liabilities (assets) * 65,276 4,983 (36,665) — 11,112 (32,957 ) — 11,749 Total ¥ 8,046,402 ¥ 1,493,986 ¥ (36,665 ) ¥ 92,612 ¥ 949,591 ¥ (32,957 ) ¥ (5,257) ¥ 10,507,712 Explanatory note: * Derivative financial liabilities (assets) are held by the Company and its finance subsidiaries to hedge foreign currency risk for principals and interests payment of long-term financing liabilities. The cash flows related to repayments of principals are included in cash flows from financing activities, while the cash flows related to interest paid are included in cash flows from operating activities.
Current borrowings [member]
Statement [LineItems]
Summary of Financing Liabilities	Financing liabilities presented in current liabilities as of March 31, 2023 and 2024 consist of the following: Yen (millions) 2023 2024 Current: Commercial paper ¥ 965,468 ¥ 959,620 Loans 358,874 387,093 Medium-term notes — 90,835 Asset-backed securities 41,433 79,299 Subtotal ¥ 1,365,775 ¥ 1,516,847 Reclassification from non-current ¥ 1,925,420 ¥ 2,588,743 Total ¥ 3,291,195 ¥ 4,105,590
Interest Rates for Financing Liabilities	The weighted average interest rates for financing liabilities presented in current liabilities (excluding reclassification from non-current 2023 2024 Weighted average interest rate 4.29 % 4.94 %
Non-current liabilities [member]
Statement [LineItems]
Summary of Financing Liabilities	Financing liabilities presented in non-current Yen (millions) 2023 2024 Non-current: Loans ¥ 958,836 ¥ 1,050,890 Medium-term notes 3,359,462 5,129,411 Corporate bonds 1,001,187 1,038,311 Asset-backed securities 979,908 1,428,098 Subtotal ¥ 6,299,393 ¥ 8,646,710 Reclassification to current liabilities (Current portion) ¥ (1,925,420 ) ¥ (2,588,743 ) Total ¥ 4,373,973 ¥ 6,057,967
Interest Rates for Financing Liabilities	The interest rate range and payment due date for financing liabilities presented in non-current 2023 2024 Loans Interest rate: 0.14% - 12.90% Due: 2023 - 2046 Interest rate: 0.14% - 13.06% Due: 2024 - 2046 Medium-term notes Interest rate: 0.30% - 5.88% Due: 2023 - 2031 Interest rate: 0.30% - 6.40% Due: 2024 - 2034 Corporate bonds Interest rate: 0.01% - 2.97% Due: 2023 - 2032 Interest rate: 0.03% - 2.97% Due: 2024 - 2032 Asset-backed securities Interest rate: 0.11% - 5.50% Due: 2023 - 2028 Interest rate: 0.11% - 5.94% Due: 2024 - 2028

Other Financial Liabilities (Ta

Other Financial Liabilities (Tables)	12 Months Ended
Other Financial Liabilities (Tables)	Mar. 31, 2024
TextBlock1 [Abstract]
Summary of Other Financial Liabilities	Other financial liabilities as of March 31, 2023 and 2024 consist of the following: Yen (millions) 2023 2024 Financial liabilities measured at amortized cost ¥ 53,920 ¥ 88,779 Financial liabilities measured at fair value through profit or loss: Derivatives 242,968 236,592 Lease liabilities 315,958 332,406 Total ¥ 612,846 ¥ 657,777 Current liabilities ¥ 324,110 ¥ 340,858 Non-current 288,736 316,919 Total ¥ 612,846 ¥ 657,777

Provisions (Tables)

Provisions (Tables)	12 Months Ended
Provisions (Tables)	Mar. 31, 2024
TextBlock1 [Abstract]
Components of and Changes in Provisions	The components of and changes in provisions for the year ended March 31, 2024 are as follows: Yen (millions) Product Other Total Balance as of April 1, 2023 ¥ 535,099 ¥ 97,771 ¥ 632,870 Provision ¥ 536,590 ¥ 56,590 ¥ 593,180 Write-offs (221,054 ) (24,022 ) (245,076 ) Reversal (88,266 ) (5,981 ) (94,247 ) Exchange differences on translating foreign operations 52,821 12,175 64,996 Balance as of March 31, 2024 ¥ 815,190 ¥ 136,533 ¥ 951,723 Explanatory note: * Honda recognizes provisions for product warranties to cover future product warranty expenses. Honda recognizes costs for general warranties on products Honda sells and for specific warranty programs, including product recalls. Honda recognizes general estimated warranty costs at the time products are sold to customers. Honda also recognizes specific estimated warranty program costs when it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation, and a reliable estimate can be made of the amount of the obligation. These provisions are estimated based on historical warranty claim experience with consideration given to the expected level of future warranty costs, including current sales trends, the expected number of units to be affected and the estimated average repair cost per unit for warranty claims. Provisions for product warranties are utilized for expenditures based on the demand from customers and dealers. A portion of the product warranties is expected to be reimbursed by agreement with suppliers. The amount of expected reimbursement is ¥167,920 million as of March 31, 2024.
Current Liabilities and Non-current Liabilities of Provisions	Current liabilities and non-current Yen (millions) 2023 2024 Current liabilities ¥ 362,701 ¥ 566,722 Non-current 270,169 385,001 Total ¥ 632,870 ¥ 951,723

Employee Benefits (Tables)

Employee Benefits (Tables)	12 Months Ended
Employee Benefits (Tables)	Mar. 31, 2024
TextBlock1 [Abstract]
Changes in Present Value of Defined Benefit Obligations and Fair Value of Plan Assets	The changes in present value of defined benefit obligations and fair value of plan assets of the Company and certain of its consolidated subsidiaries for the years ended March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Japanese plans Foreign plans Japanese plans Foreign plans Present value of defined benefit obligations: Balance at beginning of year ¥ 1,262,245 ¥ 1,087,526 ¥ 1,160,727 ¥ 925,961 Current service cost 30,632 22,555 27,397 17,702 Past service cost — — — (271 ) Interest cost 9,732 40,151 13,944 47,108 Plan participants’ contributions — 4,165 — 4,447 Remeasurements: Changes in demographic assumptions (3,387 ) (317 ) (4,249 ) (724 ) Changes in financial assumptions (71,936 ) (220,863 ) (44,232 ) (14,686 ) Other 12,291 38,427 (91 ) (1,446 ) Benefits paid (63,085 ) (116,150 ) (59,464 ) (66,563 ) Deconsolidation (15,765 ) — (12,640 ) — Exchange differences on translating foreign operations — 70,467 — 125,595 Balance at end of year ¥ 1,160,727 ¥ 925,961 ¥ 1,081,392 ¥ 1,037,123 Fair value of plan assets: Balance at beginning of year ¥ 1,355,276 ¥ 1,013,050 ¥ 1,236,755 ¥ 879,975 Interest income 10,589 37,211 15,030 45,291 Actual return on plan assets, excluding interest income (76,690 ) (137,659 ) 43,828 (6,964 ) Employer contributions 20,409 21,178 20,108 16,819 Plan participants’ contributions — 4,165 — 4,447 Benefits paid (58,544 ) (116,150 ) (54,727 ) (66,563 ) Deconsolidation (14,285 ) — (13,935 ) — Exchange differences on translating foreign operations — 58,180 — 120,396 Balance at end of year ¥ 1,236,755 ¥ 879,975 ¥ 1,247,059 ¥ 993,401 Effects of asset ceiling — 62,516 123,505 86,321 Net defined benefit liabilities (assets) ¥ (76,028 ) ¥ 108,502 ¥ (42,162 ) ¥ 130,043
Fair Value of Japanese and Foreign Pension Plan Assets By Asset Category	The fair value of the Japanese and foreign pension plan assets by asset category as of March 31, 2023 and 2024 is as follows: As of March 31, 2023 Yen (millions) Japanese plans Foreign plans Market price in active Market price in active Quoted Unquoted Total Quoted Unquoted Total Cash and cash equivalents ¥ 20,230 ¥ — ¥ 20,230 ¥ 6,929 ¥ — ¥ 6,929 Equity securities: Japan 22,388 — 22,388 398 — 398 United States 195,611 — 195,611 13,794 — 13,794 Other 171,921 153 172,074 7,413 — 7,413 Debt securities: Japan 66,416 862 67,278 — 768 768 United States 35,338 136,352 171,690 — 114,757 114,757 Other 152,213 89,536 241,749 — 10,656 10,656 Group annuity insurance: General accounts — 40,942 40,942 — — — Separate accounts — 23,130 23,130 — — — Pooled funds: Real estate funds — 398 398 — 73,017 73,017 Private equity funds — — — — 162,414 162,414 Hedge funds — 117,422 117,422 — 26,061 26,061 Commingled and other mutual funds 1,419 151,752 153,171 — 454,352 454,352 Other 54 10,618 10,672 263 9,153 9,416 Total ¥ 665,590 ¥ 571,165 ¥ 1,236,755 ¥ 28,797 ¥ 851,178 ¥ 879,975 As of March 31, 2024 Yen (millions) Japanese plans Foreign plans Market price in active Market price in active Quoted Unquoted Total Quoted Unquoted Total Cash and cash equivalents ¥ 14,251 ¥ — ¥ 14,251 ¥ 8,946 ¥ — ¥ 8,946 Equity securities: Japan 25,610 — 25,610 403 — 403 United States 211,349 — 211,349 12,308 — 12,308 Other 176,452 127 176,579 6,764 — 6,764 Debt securities: Japan 53,981 1,042 55,023 — 414 414 United States 149,531 16,055 165,586 — 161,319 161,319 Other 141,011 114,569 255,580 — 12,650 12,650 Group annuity insurance: General accounts — 39,329 39,329 — — — Separate accounts — 29,350 29,350 — — — Pooled funds: Real estate funds — 204 204 — 78,832 78,832 Private equity funds — — — — 171,660 171,660 Hedge funds — 134,096 134,096 — 31,495 31,495 Commingled and other mutual funds 1,289 152,466 153,755 — 464,649 464,649 Other 19 (13,672 ) (13,653 ) 424 43,537 43,961 Total ¥ 773,493 ¥ 473,566 ¥ 1,247,059 ¥ 28,845 ¥ 964,556 ¥ 993,401
Significant Actuarial Assumptions Used to Determine Present Value of Defined Benefit Obligations	The significant actuarial assumptions used to determine the present value of defined benefit obligations as of March 31, 2023 and 2024 are as follows: 2023 2024 Japanese plans Foreign plans Japanese plans Foreign plans Discount rate 1.2 % 4.8 - 5.1 % 1.6 % 4.9 - 5.2 % Rate of salary increase 1.6 % 2.0 - 4.4 % 1.6 % 2.0 - 7.5 %
Effects on Defined Benefit Obligations Due to Increase or Decrease in Discount Rate	The effects on defined benefit obligations of 0.5% increase or decrease in the discount rate as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Japanese plans Foreign plans Japanese plans Foreign plans 0.5% decrease ¥ 80,821 increase ¥ 57,236 increase ¥ 70,025 increase ¥ 67,928 increase 0.5% increase ¥ 72,450 decrease ¥ 50,643 decrease ¥ 63,047 decrease ¥ 59,881 decrease
Weighted Average Duration of Defined Benefit Obligations	The weighted average duration of defined benefit obligations as of March 31, 2023 and 2024 are as follows: 2023 2024 Japanese plans Foreign plans Japanese plans Foreign plans Weighted average duration of defined benefit obligations 13 years 11 years 12 years 11 years
Personnel Expenses Included in Consolidated Statements of Income	Personnel expenses included in the consolidated statements of income for the years ended March 31, 2022, 2023 and 2024 are as follows: Yen (millions) 2022 2023 2024 Personnel expenses ¥ 1,502,364 ¥ 1,635,515 ¥ 1,807,731

Equity (Tables)

Equity (Tables)	12 Months Ended
Equity (Tables)	Mar. 31, 2024
TextBlock1 [Abstract]
Financial Liabilities and Equity	Financing liabilities and equity of Honda as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Financing liabilities ¥ 7,665,168 ¥ 10,163,557 Equity 11,502,291 13,005,872
Total Number of Shares Authorized and Issued	The Company’s total number of shares authorized and issued for the years ended March 31, 2022, 2023 and 2024 are as follows: Shares 2022 2023 2024 Total number of authorized shares Balance at end of year Common shares, no par value 7,086,000,000 7,086,000,000 7,086,000,000 Total number of issued shares Balance at beginning of year 1,811,428,430 1,811,428,430 1,811,428,430 Changes during the year* — — 3,468,571,570 Balance at end of year 1,811,428,430 1,811,428,430 5,280,000,000 Explanatory notes: 1 As of the effective date of October 1, 2023, the Company implemented a three-for-one stock split of its common stock to shareholders as of the record date of September 30, 2023. 2 As of February 29, 2024, the Company cancelled 154,285,290 shares of its treasury stock based on the resolution of the Board of Directors Meeting on February 8, 2024.
Total Number of Treasury Stock Held	The total number of the Company’s treasury stock held by Honda as of March 31, 2022, 2023 and 2024 is as follows: Shares 2022 2023 2024 Common shares 100,828,074 147,087,841 451,092,624
Changes in Other Components of Equity	The changes in other components of equity for the years ended March 31, 2022, 2023 and 2024 are as follows: Yen (millions) Remeasurements of Net changes in revaluation of Exchange differences Total Balance as of April 1, 2021 ¥ — ¥ 88,570 ¥ 108,140 ¥ 196,710 Adjustment during the year ¥ 117,489 ¥ 58,863 ¥ 736,578 ¥ 912,930 Reclassification to retained earnings (117,489 ) (1,713 ) — (119,202 ) Balance as of March 31, 2022 ¥ — ¥ 145,720 ¥ 844,718 ¥ 990,438 Adjustment during the year ¥ 3,304 ¥ (19,030 ) ¥ 445,739 ¥ 430,013 Reclassification to retained earnings (3,304 ) 250 — (3,054 ) Balance as of March 31, 2023 ¥ — ¥ 126,940 ¥ 1,290,457 ¥ 1,417,397 Adjustment during the year ¥ (18,194 ) ¥ (17,924 ) ¥ 913,456 ¥ 877,338 Reclassification to retained earnings 18,194 (479 ) — 17,715 Balance as of March 31, 2024 ¥ — ¥ 108,537 ¥ 2,203,913 ¥ 2,312,450
Each Component of Other Comprehensive Income and Related Tax Effect Including Non-controlling Interests	Each component of other comprehensive income and related tax effect including non-controlling For the year ended March 31, 2022 Yen (millions) Before-tax Tax benefit Net-of-tax Items that will not be reclassified to profit or loss: Remeasurements of defined benefit plans: Amount incurred during the year ¥ 153,785 ¥ (36,743 ) ¥ 117,042 Net changes 153,785 (36,743 ) 117,042 Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year 76,909 (18,274 ) 58,635 Net changes 76,909 (18,274 ) 58,635 Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 1,862 (76 ) 1,786 Net changes 1,862 (76 ) 1,786 Items that may be reclassified subsequently to profit or loss: Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year (915 ) 203 (712 ) Reclassification to profit or loss 39 (9 ) 30 Net changes (876 ) 194 (682 ) Exchange differences on translating foreign operations: Amount incurred during the year 680,724 — 680,724 Reclassification to profit or loss — — — Net changes 680,724 — 680,724 Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 79,484 (1,972 ) 77,512 Reclassification to profit or loss (65 ) — (65 ) Net changes 79,419 (1,972 ) 77,447 Total other comprehensive income ¥ 991,823 ¥ (56,871 ) ¥ 934,952 For the year ended March 31, 2023 Yen (millions) Before-tax Tax benefit Net-of-tax Items that will not be reclassified to profit or loss: Remeasurements of defined benefit plans: Amount incurred during the year ¥ 7,192 ¥ (3,842 ) ¥ 3,350 Net changes 7,192 (3,842 ) 3,350 Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year (26,279 ) 7,814 (18,465 ) Net changes (26,279 ) 7,814 (18,465 ) Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 294 (2 ) 292 Net changes 294 (2 ) 292 Items that may be reclassified subsequently to profit or loss: Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year (444 ) 98 (346 ) Reclassification to profit or loss (166 ) 38 (128 ) Net changes (610 ) 136 (474 ) Exchange differences on translating foreign operations: Amount incurred during the year 427,650 (1,612 ) 426,038 Reclassification to profit or loss (4,690 ) 1,612 (3,078 ) Net changes 422,960 — 422,960 Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 32,436 (1,905 ) 30,531 Reclassification to profit or loss (102 ) — (102 ) Net changes 32,334 (1,905 ) 30,429 Total other comprehensive income ¥ 435,891 ¥ 2,201 ¥ 438,092 For the year ended March 31, 2024 Yen (millions) Before-tax Tax benefit Net-of-tax Items that will not be reclassified to profit or loss: Remeasurements of defined benefit plans: Amount incurred during the year ¥ (30,696 ) ¥ 11,765 ¥ (18,931 ) Net changes (30,696 ) 11,765 (18,931 ) Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year (27,034 ) 1,565 (25,469 ) Net changes (27,034 ) 1,565 (25,469 ) Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 8,976 (676 ) 8,300 Net changes 8,976 (676 ) 8,300 Items that may be reclassified subsequently to profit or loss: Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year 149 (83 ) 66 Reclassification to profit or loss (78 ) 68 (10 ) Net changes 71 (15 ) 56 Exchange differences on translating foreign operations: Amount incurred during the year 880,235 (2,727 ) 877,508 Reclassification to profit or loss (5,185 ) 2,727 (2,458 ) Net changes 875,050 — 875,050 Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 57,139 (2,850 ) 54,289 Reclassification to profit or loss 64 — 64 Net changes 57,203 (2,850 ) 54,353 Total other comprehensive income ¥ 883,570 ¥ 9,789 ¥ 893,359
Components of Other Comprehensive Income Included in Non-controlling Interests	The components of other comprehensive income included in non-controlling Yen (millions) 2022 2023 2024 Items that will not be reclassified to profit or loss: Remeasurements of defined benefit plans ¥ 565 ¥ 341 ¥ 186 Net changes in revaluation of financial assets measured at fair value through other comprehensive income (136 ) 88 6 Items that may be reclassified subsequently to profit or loss: Exchange differences on translating foreign operations 21,593 7,650 18,893 Total ¥ 22,022 ¥ 8,079 ¥ 19,085
Dividends from Retained Earnings	The amounts recognized as dividends of retained earnings for the years ended March 31, 2022, 2023 and 2024 are as follows: 1) Dividend payout For the year ended March 31, 2022 Resolution The Board of Directors Meeting on May 14, 2021 Type of shares Common shares Total amount of dividends (millions of yen) 93,272 Dividend per share (yen) 54.00 Record date March 31, 2021 Effective date June 7, 2021 Resolution The Board of Directors Meeting on November 5, 2021 Type of shares Common shares Total amount of dividends (millions of yen) 95,130 Dividend per share (yen) 55.00 Record date September 30, 2021 Effective date December 1, 2021 For the year ended March 31, 2023 Resolution The Board of Directors Meeting on May 13, 2022 Type of shares Common shares Total amount of dividends (millions of yen) 111,256 Dividend per share (yen) 65.00 Record date March 31, 2022 Effective date June 6, 2022 Resolution The Board of Directors Meeting on November 9, 2022 Type of shares Common shares Total amount of dividends (millions of yen) 102,219 Dividend per share (yen) 60.00 Record date September 30, 2022 Effective date December 5, 2022 For the year ended March 31, 2024 Resolution The Board of Directors Meeting on May 11, 2023 Type of shares Common shares Total amount of dividends (millions of yen) 99,915 Dividend per share (yen) 60.00 Record date March 31, 2023 Effective date June 6, 2023 Resolution The Board of Directors Meeting on November 9, 2023 Type of shares Common shares Total amount of dividends (millions of yen) 141,949 Dividend per share (yen) 87.00 Record date September 30, 2023 Effective date December 5, 2023 2) Dividends payable of which record date was in the year ended March 31, 2024, effective after the period Resolution The Board of Directors Meeting on May 10, 2024 Type of shares Common shares Resource for dividend Retained earnings Total amount of dividends (millions of yen) 188,418 Dividend per share (yen) 39.00 Record date March 31, 2024 Effective date June 4, 2024 Explanatory note: * As of the effective date of October 1, 2023, the Company implemented a three-for-one stock split of its common stock to shareholders as of the record date of September 30, 2023. Dividend per share based on the resolution of the Board of Directors Meeting on May 10, 2024 is an amount after the stock split.

Sales Revenue (Tables)

Sales Revenue (Tables)	12 Months Ended
Sales Revenue (Tables)	Mar. 31, 2024
TextBlock1 [Abstract]
Summary of Reconciliation of the Disaggregated Sales Revenue with the Four Reportable Segments	The sales revenue disaggregated by geographical markets based on the location of the customer and the reconciliation of the disaggregated sales revenue with each segment for the years ended March 31, 2022, 2023 and 2024 are as follows: For the year ended March 31, 2022 Yen (millions) Motorcycle Automobile Financial Power Total Revenue arising from contracts with customers Japan ¥ 105,022 ¥ 1,337,860 ¥ 146,185 ¥ 79,182 ¥ 1,668,249 North America 230,766 4,877,900 1,289,076 152,096 6,549,838 Europe 202,254 319,340 — 79,393 600,987 Asia 1,307,915 2,314,425 37 63,861 3,686,238 Other Regions 337,219 280,702 — 24,305 642,226 Total ¥ 2,183,176 ¥ 9,130,227 ¥ 1,435,298 ¥ 398,837 ¥ 13,147,538 Revenue arising from the other sources* 2,077 17,271 1,385,369 441 1,405,158 Total ¥ 2,185,253 ¥ 9,147,498 ¥ 2,820,667 ¥ 399,278 ¥ 14,552,696 For the year ended March 31, 2023 Yen (millions) Motorcycle Automobile Financial Power Total Revenue arising from contracts with customers Japan ¥ 109,393 ¥ 1,375,593 ¥ 158,653 ¥ 89,627 ¥ 1,733,266 North America 306,725 5,985,958 1,341,863 182,126 7,816,672 Europe 250,088 332,928 — 94,328 677,344 Asia 1,739,330 2,523,613 29 55,354 4,318,326 Other Regions 502,917 360,299 — 29,464 892,680 Total ¥ 2,908,453 ¥ 10,578,391 ¥ 1,500,545 ¥ 450,899 ¥ 15,438,288 Revenue arising from the other sources* 530 15,128 1,453,553 226 1,469,437 Total ¥ 2,908,983 ¥ 10,593,519 ¥ 2,954,098 ¥ 451,125 ¥ 16,907,725 For the year ended March 31, 2024 Yen (millions) Motorcycle Automobile Financial Power Total Revenue arising from contracts with customers Japan ¥ 113,746 ¥ 1,586,358 ¥ 172,072 ¥ 87,072 ¥ 1,959,248 North America 335,545 8,503,602 1,487,948 138,760 10,465,855 Europe 351,850 506,731 — 84,459 943,040 Asia 1,792,327 2,446,250 5 55,898 4,294,480 Other Regions 625,585 498,506 — 26,001 1,150,092 Total ¥ 3,219,053 ¥ 13,541,447 ¥ 1,660,025 ¥ 392,190 ¥ 18,812,715 Revenue arising from the other sources* 1,115 26,118 1,588,783 71 1,616,087 Total ¥ 3,220,168 ¥ 13,567,565 ¥ 3,248,808 ¥ 392,261 ¥ 20,428,802 Explanatory note: * Revenue arising from the other sources primarily includes lease revenues recognized under IFRS 16 and interest recognized under IFRS 9.
Summary of Information Regarding Receivables from Contracts with Customers and Contract Liabilities	The receivables from contracts with customers and contract liabilities for the years ended March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Receivables from contracts with customers: Trade receivables ¥ 893,559 ¥ 982,118 Contract liabilities: Other current liabilities 292,552 401,855 Other noncurrent liabilities 240,556 306,170
Summary of Revenue Expected to be Recognized in the Future Related to Performance Obligations that are Unsatisfied (or Partially Unsatisfied)	The revenue expected to be recognized in the future related to performance obligations that are unsatisfied (or partially unsatisfied) as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Within 1 year ¥ 150,507 ¥ 230,865 Between 1 and 5 years 280,981 355,882 Later than 5 years 14,892 22,198 Total ¥ 446,380 ¥ 608,945
Summary of Assets Recognized Costs Obtain a Contract With Customer	The assets recognized from the costs to obtain a contract with a customer as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Assets recognized from the costs to obtain a contract with a customer ¥ 148,074 ¥ 186,074

Research and Development (Table

Research and Development (Tables)	12 Months Ended
Research and Development (Tables)	Mar. 31, 2024
TextBlock1 [Abstract]
Summary of Research and Development Costs	Research and development costs for the years ended March 31, 2022, 2023 and 2024 consist of the following: Yen (millions) 2022 2023 2024 Research and development expenditures incurred during the reporting period ¥ 804,025 ¥ 852,067 ¥ 976,366 Amount capitalized (159,174 ) (120,811 ) (207,519 ) Amortization and impairment losses of capitalized development costs 142,205 149,659 154,780 Total ¥ 787,056 ¥ 880,915 ¥ 923,627

Finance Income and Finance Co_2

Finance Income and Finance Costs (Tables)	12 Months Ended
Finance Income and Finance Costs (Tables)	Mar. 31, 2024
TextBlock1 [Abstract]
Summary of Finance Income and Finance Costs	Finance income and finance costs for the years ended March 31, 2022, 2023 and 2024 consist of the following: Yen (millions) 2022 2023 2024 Interest income: Financial assets measured at amortized cost ¥ 22,847 ¥ 69,217 ¥ 169,287 Financial assets measured at fair value through other comprehensive income 185 497 798 Financial assets measured at fair value through profit or loss 2,595 3,357 3,610 Total 25,627 73,071 173,695 Interest expense: Financial liabilities measured at amortized cost (15,706 ) (34,065 ) (42,609 ) Other (1,161 ) (2,047 ) (17,022 ) Total (16,867 ) (36,112 ) (59,631 ) Other, net: Dividends received: Financial assets measured at fair value through other comprehensive income 4,777 6,150 8,804 Financial assets measured at fair value through profit or loss — — — Gains (losses) on derivatives: Financial assets and financial liabilities measured at fair value through profit or loss (77,789 ) (92,144 ) (202 ) Gains (losses) on foreign exchange 68,033 47,705 67,414 Other (7,335 ) (17,319 ) (40,490 ) Total (12,314 ) (55,608 ) 35,526 Total ¥ (3,554 ) ¥ (18,649 ) ¥ 149,590

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Mar. 31, 2024
TextBlock1 [Abstract]
Profit Before Income Taxes and Income Tax Expense	Profit before income taxes and income tax expense for the years ended March 31, 2022, 2023 and 2024 consist of the following: Yen (millions) 2022 2023 2024 Japan Foreign Total Japan Foreign Total Japan Foreign Total Profit (loss) before income taxes ¥ (42,213 ) ¥ 1,112,403 ¥ 1,070,190 ¥ (40,638 ) ¥ 920,203 ¥ 879,565 ¥ 148,651 ¥ 1,493,733 ¥ 1,642,384 Income tax expense (benefit): Current taxes 9,539 277,894 287,433 12,699 353,611 366,310 19,081 606,077 625,158 Deferred taxes (4,081 ) 26,137 22,056 (92,631 ) (111,423 ) (204,054 ) 34,265 (199,629 ) (165,364 ) Total ¥ 5,458 ¥ 304,031 ¥ 309,489 ¥ (79,932 ) ¥ 242,188 ¥ 162,256 ¥ 53,346 ¥ 406,448 ¥ 459,794
Reconciliation of Statutory Income Tax Rate to Average Effective Tax Rate	The Japanese statutory income tax rate for the years ended March 31, 2022, 2023 and 2024 differs from the average effective tax rate for the following reasons: 2022 2023 2024 Statutory income tax rate 30.2 % 30.2 % 30.2 % Difference in statutory income tax rates of foreign subsidiaries (4.5 ) (6.3 ) (5.4 ) Effects of investments accounted for using the equity method (5.7 ) (4.0 ) (2.0 ) Effects of undistributed earnings and withholding taxes on royalty 7.1 11.3 6.1 Changes in unrecognized deferred tax assets 1.4 (10.3 ) 0.1 Effects of income and expense not taxable and deductible for tax purpose 0.0 0.1 0.0 Effects of tax credit (0.9 ) (2.9 ) (2.6 ) Other adjustments relating to prior years (0.1 ) (0.5 ) (0.1 ) Adjustments for the uncertain tax treatments on income taxes 0.9 0.6 0.1 Adjustments for the changes in income tax laws 0.1 (0.6 ) 0.2 Other 0.4 0.8 1.4 Average effective tax rate 28.9 % 18.4 % 28.0 %
Components by Major Factor in Deferred Tax Assets and Deferred Tax Liabilities	The components by major factor in deferred tax assets and deferred tax liabilities as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Deferred tax assets: Inventories ¥ 51,604 ¥ 60,476 Accrued expenses 56,926 75,627 Provisions 133,007 170,286 Property, plant and equipment 27,854 40,470 Intangible assets 47,995 75,630 Retirement benefit liabilities 64,275 59,951 Lease liabilities* 70,522 72,720 Carryforward of unused tax losses 108,106 95,400 Carryforward of unused tax credit 14,930 11,387 Other* 106,043 105,431 Total ¥ 681,262 ¥ 767,378 Deferred tax liabilities: Property, plant and equipment* ¥ 173,881 ¥ 154,256 Intangible assets 182,258 195,662 Other financial assets 59,275 55,074 Operating leases 772,991 776,937 Undistributed earnings 60,914 71,577 Retirement benefit assets 56,932 37,780 Receivables from financial services 68,005 63,070 Other 78,514 97,233 Total ¥ 1,452,770 ¥ 1,451,589 Net deferred tax assets (liabilities) ¥ (771,508 ) ¥ (684,211 ) Explanatory note: * Honda has adopted “Deferred Tax related to Assets and Liabilities arising from a Single Transaction (Amendments to IAS 12)” with a date of initial application of April 1, 2023 and the comparative information has been retrospectively adjusted.
Changes in Deferred Tax Assets and Deferred Tax Liabilities Recognized as Income Tax Expense in the Consolidated Statements of Income	The changes in deferred tax assets and deferred tax liabilities recognized as income tax expense in the consolidated statements of income for the years ended March 31, 2022, 2023 and 2024 are as follows: Yen (millions) 2022 2023 2024 Inventories ¥ (9,865 ) ¥ (7,407 ) ¥ (8,335 ) Provisions (3,491 ) (27,854 ) (26,423 ) Property, plant and equipment* 1 (5,960 ) 19,079 (41,544 ) Retirement benefit liabilities (assets) (4,991 ) (4,149 ) (1,840 ) Operating leases (35,308 ) (153,429 ) (93,321 ) Undistributed earnings 4,198 (1,005 ) 8,355 Carryforward of unused tax losses (1,608 ) (42,172 ) 17,652 Carryforward of unused tax credit 16,102 9,504 4,238 Other* 1 2 62,979 3,379 (24,146 ) Total ¥ 22,056 ¥ (204,054 ) ¥ (165,364 ) Explanatory notes: 1 Honda has adopted “Deferred Tax related to Assets and Liabilities arising from a Single Transaction (Amendments to IAS 12)” with a date of initial application of April 1, 2023 and the comparative information has been retrospectively adjusted. 2 The income tax expense recognized due to the decrease of deferred tax assets arising from accrued expenses included in other as of March 31, 2022 is ¥27,321 million.
Deductible Temporary Differences, Carryforward of Unused Tax Losses and Unused Tax Credit for which Deferred Tax Assets are not Recognized	Deductible temporary differences, carryforward of unused tax losses and carryforward of unused tax credit for which deferred tax assets are not recognized as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Deductible temporary differences ¥ 391,536 ¥ 446,655 Carryforward of unused tax losses 532,191 439,849 Carryforward of unused tax credit 35,629 65,643
Components by Expiry of the Carryforward of Unused Tax Losses for which Deferred Tax Assets are not Recognized	The components by expiry of the carryforward of unused tax losses for which deferred tax assets are not recognized as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Within 1 year ¥ 13,331 ¥ 4,088 Between 1 and 5 years 82,173 95,320 Between 5 and 20 years 107,052 55,480 Indefinite periods 329,635 284,961 Total ¥ 532,191 ¥ 439,849
Components by Expiry of Carryforward of Unused Tax Credits for which Deferred Tax Assets are not Recognized	The components by expiry of the carryforward of unused tax credit for which deferred tax assets are not recognized as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Within 1 year ¥ 5 ¥ 38 Between 1 and 5 years 35,611 65,574 Between 5 and 20 years 13 31 Indefinite periods — — Total ¥ 35,629 ¥ 65,643

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
Earnings Per Share (Tables)	Mar. 31, 2024
TextBlock1 [Abstract]
Summary of Earnings Per Share	Earnings per share attributable to owners of the parent for the years ended March 31, 2022, 2023 and 2024 are calculated based on the following information. There were no significant dilutive potential common shares outstanding for the years ended March 31, 2022, 2023 and 2024. 2022 2023 2024 Profit for the year attributable to owners of the parent (millions of yen) ¥ 707,067 ¥ 651,416 ¥ 1,107,174 Weighted average number of common shares outstanding, basic (shares) 5,159,885,505 5,088,921,345 4,901,560,332 Basic earnings per share attributable to owners of the parent (yen) ¥ 137.03 ¥ 128.01 ¥ 225.88 Explanatory note: * As of the effective date of October 1, 2023, the Company implemented a three-for-one stock split of its common stock to shareholders as of the record date of September 30, 2023. Basic earnings per share attributable to owners of the parent are calculated based on the assumption that the stock split had been implemented at the beginning of the year ended March 31, 2022.

Financial Risk Management (Tabl

Financial Risk Management (Tables)	12 Months Ended
Financial Risk Management (Tables)	Mar. 31, 2024
Statement [LineItems]
Analysis of the Age of Receivables from Financial Services that are Past Due	The analysis of the age of receivables from financial services that are past due as of March 31, 2023 and 2024 is as follows: Yen (millions) As of March 31, 2023 Less than 30 days 30-59 days 60-89 days 90 days and Total Consumer finance receivables: Retail ¥ 223,674 ¥ 55,675 ¥ 13,185 ¥ 9,481 ¥ 302,015 Finance lease 545 118 5 300 968 Dealer finance receivables: Wholesale 8,929 9 11 18 8,967 Total ¥ 233,148 ¥ 55,802 ¥ 13,201 ¥ 9,799 ¥ 311,950 Yen (millions) As of March 31, 2024 Less than 30 days 30-59 days 60-89 days 90 days and Total Consumer finance receivables: Retail ¥ 328,741 ¥ 74,948 ¥ 19,722 ¥ 17,246 ¥ 440,657 Finance lease 1,499 258 16 481 2,254 Dealer finance receivables: Wholesale 10,457 51 16 44 10,568 Total ¥ 340,697 ¥ 75,257 ¥ 19,754 ¥ 17,771 ¥ 453,479
Summary of retail receivables included in consumer finance receivables	The balances of retail receivables included in consumer finance receivables as of March 31, 2023 and 2024 are as follows: Yen (millions) 12-month Lifetime ECL Total As of March 31, 2023 Not credit- Credit- Consumer finance receivables: Retail* ¥ 4,985,289 ¥ 356,005 ¥ 21,966 ¥ 5,363,260 Yen (millions) 12-month Lifetime ECL Total As of March 31, 2024 Not credit- Credit- Consumer finance receivables: Retail* ¥ 6,919,715 ¥ 374,582 ¥ 36,162 ¥ 7,330,459 Explanatory note: * The tables above represent the gross amounts of retail receivables by stages of ECL model since the expected credit losses are measured collectively by our finance subsidiaries and the balances of those receivables are not directly allocated to the risk ratings.
Dealer Finance Receivables and Undiscounted Maximum Amounts of Potential Payment for Loan Commitments	The balances of dealer finance receivables and the undiscounted maximum amounts of potential payment for loan commitments by this risk rating as of March 31, 2023 and 2024 are as follows: Yen (millions) 12-month ECL Lifetime ECL Total As of March 31, 2023 Not credit-impaired Credit-impaired Dealer finance receivables: Group A ¥ 297,885 ¥ 706 ¥ 4,612 ¥ 303,203 Group B 116,156 1,684 123 117,963 Total ¥ 414,041 ¥ 2,390 ¥ 4,735 ¥ 421,166 Loan commitments: Group A ¥ 103,858 ¥ — ¥ — ¥ 103,858 Group B 15,364 — — 15,364 Total ¥ 119,222 ¥ — ¥ — ¥ 119,222 The undiscounted maximum amount of potential payment for guarantees of bank loans of employees for their housing costs as of March 31, 2023 is ¥ million. Yen (millions) 12-month ECL Lifetime ECL Total As of March 31, 2024 Not credit-impaired Credit-impaired Dealer finance receivables: Group A ¥ 527,138 ¥ 3,403 ¥ 6,010 ¥ 536,551 Group B 166,726 3,559 199 170,484 Total ¥ 693,864 ¥ 6,962 ¥ 6,209 ¥ 707,035 Loan commitments: Group A ¥ 82,802 ¥ — ¥ — ¥ 82,802 Group B 9,571 — — 9,571 Total ¥ 92,373 ¥ — ¥ — ¥ 92,373 The undiscounted maximum amount of potential payment for guarantees of bank loans of employees for their housing costs as of March 31, 2024 is ¥5,034 million.
Non-derivative Financial Liabilities by Maturity	Non-derivative Yen (millions) As of March 31, 2023 Carrying amount Within 1 year Between Later than Total contractual Trade payables ¥ 1,426,333 ¥ 1,426,333 ¥ — ¥ — ¥ 1,426,333 Financing liabilities 7,665,168 3,410,145 4,074,986 511,254 7,996,385 Accrued expenses 419,570 419,570 — — 419,570 Other financial liabilities 369,878 87,685 100,800 207,949 396,434 Total ¥ 9,880,949 ¥ 5,343,733 ¥ 4,175,786 ¥ 719,203 ¥ 10,238,722 Yen (millions) As of March 31, 2024 Carrying amount Within 1 year Between Later than Total contractual Trade payables ¥ 1,609,836 ¥ 1,609,836 ¥ — ¥ — ¥ 1,609,836 Financing liabilities 10,163,557 4,379,834 5,875,709 686,075 10,941,618 Accrued expenses 638,319 638,319 — — 638,319 Other financial liabilities 421,185 117,190 117,172 221,844 456,206 Total ¥ 12,832,897 ¥ 6,745,179 ¥ 5,992,881 ¥ 907,919 ¥ 13,645,979
Summary of Lease liabilities by maturity	Other financial liabilities include lease liabilities. Lease liabilities by maturity as of March 31, 2023 and 2024 are as follows: Yen (millions) As of March 31, 2023 Carrying amount Within 1 year Between Later than Total contractual Lease liabilities ¥ 315,958 ¥ 69,297 ¥ 87,428 ¥ 185,790 ¥ 342,515 Yen (millions) As of March 31, 2024 Carrying amount Within 1 year Between Later than Total contractual Lease liabilities ¥ 332,406 ¥ 79,012 ¥ 101,205 ¥ 187,211 ¥ 367,428
Derivative Financial Liabilities by Maturity	Derivative financial liabilities by maturity as of March 31, 2023 and 2024 are as follows: Yen (millions) As of March 31, 2023 Within 1 year Between 1 and 5 years Later than 5 years Total contractual Derivative financial liabilities ¥ 109,112 ¥ 137,056 ¥ 22,787 ¥ 268,955 Yen (millions) As of March 31, 2024 Within 1 year Between 1 and 5 years Later than 5 years Total contractual Derivative financial liabilities ¥ 121,922 ¥ 154,387 ¥ 3,863 ¥ 280,172
Currency risk [member]
Statement [LineItems]
Market Risk Sensitivity Analysis	The following scenario demonstrates the impact of a 1% appreciation of the Japanese yen against the U.S. dollar on profit before income taxes, holding all variables other than the foreign currency exchange rate constant. Yen (millions) 2023 2024 Impact on profit before income taxes ¥ (2,696) ¥ (4,138)
Interest rate risk [member]
Statement [LineItems]
Market Risk Sensitivity Analysis	The following scenario demonstrates the impact of a 100 basis point rise in interest rates on profit before income taxes, holding all variables other than interest rates constant. Yen (millions) 2023 2024 Impact on profit before income taxes ¥ (2,092) ¥ (24,322)
Credit facility [member]
Statement [LineItems]
Unused Portions of Credit Facility	The unused portions of the credit facility of Honda’s commercial paper and medium-term note programs as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Commercial paper ¥ 729,096 ¥ 900,657 Medium-term notes 3,832,311 1,857,974 Total ¥ 4,561,407 ¥ 2,758,631
Committed lines of credit [member]
Statement [LineItems]
Unused Portions of Credit Facility	The unused portions of the committed lines of credit extended by financial institutions to Honda as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Commercial paper programs ¥ 1,306,781 ¥ 1,461,590 Other 65,299 63,759 Total ¥ 1,372,080 ¥ 1,525,349

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
Fair Value (Tables)	Mar. 31, 2024
Measured at fair value on a recurring basis [member]
Statement [LineItems]
Financial Assets and Financial Liabilities	Assets and liabilities measured at fair value on a recurring basis as of March 31, 2023 and 2024 consist of the following: Yen (millions) As of March 31, 2023 Level 1 Level 2 Level 3 Total Other financial assets: Financial assets measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 29,026 ¥ — ¥ 29,026 Interest rate instruments — 151,242 — 151,242 Other — — 5,700 5,700 Total — 180,268 5,700 185,968 Debt securities 43,264 53,634 5,074 101,972 Financial assets measured at fair value through other Debt securities — 26,555 — 26,555 Equity securities 325,318 — 149,820 475,138 Total ¥ 368,582 ¥ 260,457 ¥ 160,594 ¥ 789,633 Other financial liabilities: Financial liabilities measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 95,412 ¥ — ¥ 95,412 Interest rate instruments — 141,786 — 141,786 Other — 5,770 — 5,770 Total — 242,968 — 242,968 Total ¥ — ¥ 242,968 ¥ — ¥ 242,968 There were transfers between Level 1 and Level 2 for the year ended March 31, 2023. Yen (millions) As of March 31, 2024 Level 1 Level 2 Level 3 Total Other financial assets: Financial assets measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 80,347 ¥ — ¥ 80,347 Interest rate instruments — 108,034 — 108,034 Other — — 5,806 5,806 Total — 188,381 5,806 194,187 Debt securities 55,265 63,886 4,542 123,693 Financial assets measured at fair value through other Debt securities — 30,567 — 30,567 Equity securities 407,489 — 115,214 522,703 Total ¥ 462,754 ¥ 282,834 ¥ 125,562 ¥ 871,150 Other financial liabilities: Financial liabilities measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 100,708 ¥ — ¥ 100,708 Interest rate instruments — 133,381 — 133,381 Other — 2,503 — 2,503 Total — 236,592 — 236,592 Total ¥ — ¥ 236,592 ¥ — ¥ 236,592
Measured at fair value on a recurring basis [member] \| Level 3 [member]
Statement [LineItems]
Financial Assets and Financial Liabilities	The changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the years ended March 31, 2023 and 2024 are as follows: Yen (millions) For the year ended March 31, 2023 Derivatives Debt securities Equity securities Balance as of April 1, 2022 ¥ 4,648 ¥ 4,773 ¥ 133,038 Total gains or losses: Profit or loss 678 (136 ) — Other comprehensive income — — 9,156 Purchases — — 10,029 Sales — — (1,144 ) Transfer to level 1 due to listing — — (1,551 ) Exchange differences on translating foreign operations 374 437 292 Balance as of March 31, 2023 ¥ 5,700 ¥ 5,074 ¥ 149,820 Unrealized gains or losses included in profit or loss on assets held at March 31, 2023 ¥ 678 ¥ (136 ) ¥ — Yen (millions) For the year ended March 31, 2024 Derivatives Debt securities Equity securities Balance as of April 1, 2023 ¥ 5,700 ¥ 5,074 ¥ 149,820 Total gains or losses: Profit or loss (723 ) 145 — Other comprehensive income — (4,625 ) (47,742 ) Purchases — 4,625 7,535 Sales — (1,156 ) (160 ) Exchange differences on translating foreign operations 829 479 1,408 Other — — 4,353 Balance as of March 31, 2024 ¥ 5,806 ¥ 4,542 ¥ 115,214 Unrealized gains or losses included in profit or loss on assets held at March 31, 2024 ¥ (723 ) ¥ 145 ¥ — Explanatory notes: 1. Gains or losses included in profit or loss for the years ended March 31, 2023 and 2024 are included in other, net in finance income and finance costs in the consolidated statements of income. 2. Gains or losses on equity securities included in other comprehensive income for the years ended March 31, 2023 and 2024 are included in net changes in revaluation of financial assets measured at fair value through other comprehensive income under items that will not be reclassified to profit or loss in the consolidated statements of comprehensive income.
At cost [member]
Statement [LineItems]
Financial Assets and Financial Liabilities	The carrying amounts and fair values of financial assets and financial liabilities measured at amortized cost as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Carrying Fair value Carrying Fair value Receivables from financial services ¥ 5,894,752 ¥ 5,696,283 ¥ 8,175,270 ¥ 7,964,497 Debt securities 85,235 85,235 69,751 69,751 Financing liabilities 7,665,168 7,440,205 10,163,557 10,008,013

Offsetting of Financial Asset_2

Offsetting of Financial Assets and Financial Liabilities (Tables)	12 Months Ended
	Mar. 31, 2024
TextBlock1 [Abstract]
Offsetting Information Regarding Financial Assets and Financial Liabilities	The offsetting information regarding financial assets and financial liabilities as of March 31, 2023 and 2024 is as follows: Yen (millions) As of March 31, 2023 Gross amounts of Amounts offset Net amounts presented Amounts not offset due to not Net Amounts Other financial assets Derivatives ¥ 185,968 ¥ — ¥ 185,968 ¥ (133,472 ) ¥ 52,496 Other financial Derivatives 242,968 — 242,968 (133,472 ) 109,496 Yen (millions) As of March 31, 2024 Gross amounts of Amounts offset Net amounts presented Amounts not offset due to not Net Amounts Other financial assets Derivatives ¥ 194,187 ¥ — ¥ 194,187 ¥ (106,133 ) ¥ 88,054 Other financial Derivatives 236,592 — 236,592 (106,133 ) 130,459

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Tables)	12 Months Ended
Commitments and Contingent Liabilities (Tables)	Mar. 31, 2024
TextBlock1 [Abstract]
Commitments for Purchases of Property, Plant and Equipment and Other Commitments	Commitments for purchases of property, plant and equipment and other commitments as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Commitments for purchases of property, plant and equipment and other commitments ¥ 107,865 ¥ 108,440

Related Parties (Tables)

Related Parties (Tables)	12 Months Ended
Related Parties (Tables)	Mar. 31, 2024
TextBlock1 [Abstract]
Balances of Receivables and Payables with Affiliates and Joint Ventures	The balances of receivables and payables with affiliates and joint ventures as of March 31, 2023 and 2024 are as follows: Yen (millions) 2023 2024 Receivables: Affiliates ¥ 95,429 ¥ 76,290 Joint ventures 340,368 265,992 Total ¥ 435,797 ¥ 342,282 Payables: Affiliates ¥ 207,090 ¥ 225,706 Joint ventures 67,044 85,023 Total ¥ 274,134 ¥ 310,729
Amount of Transactions with Affiliates and Joint Ventures	The amount of the transactions with affiliates and joint ventures for the years ended March 31, 2022, 2023 and 2024 are as follows: Yen (millions) 2022 2023 2024 Sales revenue: Affiliates ¥ 93,187 ¥ 125,318 ¥ 141,323 Joint ventures 1,053,370 942,003 818,607 Total ¥ 1,146,557 ¥ 1,067,321 ¥ 959,930 Purchase: Affiliates ¥ 1,176,066 ¥ 1,443,840 ¥ 1,620,755 Joint ventures 194,321 238,341 442,035 Total ¥ 1,370,387 ¥ 1,682,181 ¥ 2,062,790
Compensation Paid to Directors	Compensation paid to the directors and executive officers of the Company for the years ended March 31, 2022, 2023 and 2024 are as follows: Yen (millions) 2022 2023 2024 Remuneration ¥ 696 ¥ 679 ¥ 1,209 STI (Short Term Incentive) 188 229 612 LTI (Long Term Incentive) 159 286 453 Total ¥ 1,043 ¥ 1,194 ¥ 2,274
Major Consolidated Subsidiaries	Major consolidated subsidiaries as of March 31, 2024 are as follows: Company Country of Function Percentage Honda R&D Co., Ltd. Japan Research & Development 100.0 Honda Finance Co., Ltd. Japan Finance 100.0 American Honda Motor Co., Inc. U.S.A. Coordination of Subsidiaries Operation, Research & Development, Manufacturing and Sales 100.0 American Honda Finance Corporation U.S.A. Finance 100.0 Honda Development and Manufacturing of America, LLC U.S.A. Research & Development and Manufacturing 100.0 Honda Canada Inc. Canada Manufacturing and Sales 100.0 Honda Canada Finance Inc. Canada Finance 100.0 Honda de Mexico, S.A. de C.V. Mexico Manufacturing and Sales 100.0 Honda Motor Europe Limited U.K. Coordination of Subsidiaries Operation and Sales 100.0 Honda Finance Europe plc U.K. Finance 100.0 Honda Motor (China) Investment Co., Ltd. China Coordination of Subsidiaries Operation and Sales 100.0 Honda Auto Parts Manufacturing Co., Ltd. China Manufacturing 100.0 Honda Motorcycle & Scooter India (Private) Ltd. India Manufacturing and Sales 100.0 Honda Cars India Limited India Manufacturing and Sales 100.0 P.T. Honda Prospect Motor Indonesia Manufacturing and Sales 51.0 Honda Malaysia Sdn Bhd Malaysia Manufacturing and Sales 51.0 Asian Honda Motor Co., Ltd. Thailand Coordination of Subsidiaries Operation and Sales 100.0 Honda Automobile (Thailand) Co., Ltd. Thailand Manufacturing and Sales 89.0 Thai Honda Co., Ltd. Thailand Manufacturing and Sales 72.5 Honda Vietnam Co., Ltd. Vietnam Manufacturing and Sales 70.0 Honda South America Ltda. Brazil Coordination of Subsidiaries Operation 100.0 Moto Honda da Amazonia Ltda. Brazil Manufacturing and Sales 100.0

Material Accounting Policies -

Material Accounting Policies - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2024
Capitalized development costs [member] \| Bottom of range [member]
Accounting Policies [Line Items]
Estimated useful lives of intangible assets	2 years
Capitalized development costs [member] \| Top of range [member]
Accounting Policies [Line Items]
Estimated useful lives of intangible assets	6 years
Other [member] \| Bottom of range [member]
Accounting Policies [Line Items]
Estimated useful lives of intangible assets	3 years
Other [member] \| Top of range [member]
Accounting Policies [Line Items]
Estimated useful lives of intangible assets	5 years
Buildings and structures [member] \| Bottom of range [member]
Accounting Policies [Line Items]
Estimated useful lives of property, plant and equipment	3 years
Buildings and structures [member] \| Top of range [member]
Accounting Policies [Line Items]
Estimated useful lives of property, plant and equipment	50 years
Machinery and equipment [member] \| Bottom of range [member]
Accounting Policies [Line Items]
Estimated useful lives of property, plant and equipment	2 years
Machinery and equipment [member] \| Top of range [member]
Accounting Policies [Line Items]
Estimated useful lives of property, plant and equipment	20 years

Segment Information - Additiona

Segment Information - Additional Information (Detail)	12 Months Ended
Segment Information - Additional Information (Detail)	Mar. 31, 2024 Segments
Disclosure of operating segments [abstract]
Number of reportable segments	4

Segment Information - Summary o

Segment Information - Summary of Segment Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Disclosure of operating segments [line items]
Sales revenue	¥ 20,428,802	¥ 16,907,725	¥ 14,552,696
Segment profit (loss)	1,381,977	780,769	871,232
Share of profit of investments accounted for using the equity method	110,817	117,445	202,512
Segment assets	29,774,150	24,670,067	23,973,153
Investments accounted for using the equity method	1,206,968	915,946	967,404
Depreciation and amortization	1,579,486	1,596,876	1,476,908
Capital expenditures	3,141,179	2,233,521	2,503,820
Impairment losses on non-financial assets	59,392	34,789	15,224
Provision (reversal) for credit and lease residual losses on receivables from financial services	50,057	27,018	9,282
External customers [member]
Disclosure of operating segments [line items]
Sales revenue	20,428,802	16,907,725	14,552,696
Intersegment [member]
Disclosure of operating segments [line items]
Sales revenue
Operating segments [member]
Disclosure of operating segments [line items]
Sales revenue	20,685,796	17,123,276	14,790,927
Segment profit (loss)	1,381,977	780,769	871,232
Share of profit of investments accounted for using the equity method	110,817	117,445	202,512
Segment assets	28,441,388	23,340,223	22,806,359
Investments accounted for using the equity method	1,206,968	915,946	967,404
Depreciation and amortization	1,579,486	1,596,876	1,476,908
Capital expenditures	3,141,179	2,233,521	2,503,820
Impairment losses on non-financial assets	59,392	34,789	15,224
Provision (reversal) for credit and lease residual losses on receivables from financial services	50,057	27,018	9,282
Operating segments [member] \| External customers [member]
Disclosure of operating segments [line items]
Sales revenue	20,428,802	16,907,725	14,552,696
Operating segments [member] \| Intersegment [member]
Disclosure of operating segments [line items]
Sales revenue	256,994	215,551	238,231
Operating segments [member] \| Motorcycle business [member]
Disclosure of operating segments [line items]
Sales revenue	3,220,168	2,908,983	2,185,253
Segment profit (loss)	556,232	488,709	311,492
Share of profit of investments accounted for using the equity method	53,843	49,119	33,510
Segment assets	2,047,270	1,580,521	1,448,926
Investments accounted for using the equity method	119,598	110,665	104,535
Depreciation and amortization	72,590	65,746	65,423
Capital expenditures	74,006	59,101	49,203
Impairment losses on non-financial assets	33	4,662	(23)
Provision (reversal) for credit and lease residual losses on receivables from financial services
Operating segments [member] \| Motorcycle business [member] \| External customers [member]
Disclosure of operating segments [line items]
Sales revenue	3,220,168	2,908,983	2,185,253
Operating segments [member] \| Motorcycle business [member] \| Intersegment [member]
Disclosure of operating segments [line items]
Sales revenue
Operating segments [member] \| Automobile business [member]
Disclosure of operating segments [line items]
Sales revenue	13,791,515	10,781,717	9,360,593
Segment profit (loss)	560,649	(16,629)	236,207
Share of profit of investments accounted for using the equity method	55,392	66,973	168,415
Segment assets	11,690,446	10,082,519	9,563,553
Investments accounted for using the equity method	1,076,481	795,973	855,309
Depreciation and amortization	655,250	600,617	510,755
Capital expenditures	598,475	613,351	410,169
Impairment losses on non-financial assets	44,652	24,777	13,097
Provision (reversal) for credit and lease residual losses on receivables from financial services
Operating segments [member] \| Automobile business [member] \| External customers [member]
Disclosure of operating segments [line items]
Sales revenue	13,567,565	10,593,519	9,147,498
Operating segments [member] \| Automobile business [member] \| Intersegment [member]
Disclosure of operating segments [line items]
Sales revenue	223,950	188,198	213,095
Operating segments [member] \| Financial services business [member]
Disclosure of operating segments [line items]
Sales revenue	3,251,784	2,956,144	2,823,323
Segment profit (loss)	273,978	285,857	333,032
Share of profit of investments accounted for using the equity method
Segment assets	14,118,371	11,197,017	11,318,756
Investments accounted for using the equity method
Depreciation and amortization	834,246	908,942	883,712
Capital expenditures	2,451,930	1,546,683	2,028,700
Impairment losses on non-financial assets	14,646	5,259	1,874
Provision (reversal) for credit and lease residual losses on receivables from financial services	50,057	27,018	9,282
Operating segments [member] \| Financial services business [member] \| External customers [member]
Disclosure of operating segments [line items]
Sales revenue	3,248,808	2,954,098	2,820,667
Operating segments [member] \| Financial services business [member] \| Intersegment [member]
Disclosure of operating segments [line items]
Sales revenue	2,976	2,046	2,656
Operating segments [member] \| Power products and other businesses [member]
Disclosure of operating segments [line items]
Sales revenue	422,329	476,432	421,758
Segment profit (loss)	(8,882)	22,832	(9,499)
Share of profit of investments accounted for using the equity method	1,582	1,353	587
Segment assets	585,301	480,166	475,124
Investments accounted for using the equity method	10,889	9,308	7,560
Depreciation and amortization	17,400	21,571	17,018
Capital expenditures	16,768	14,386	15,748
Impairment losses on non-financial assets	61	91	276
Provision (reversal) for credit and lease residual losses on receivables from financial services
Operating segments [member] \| Power products and other businesses [member] \| External customers [member]
Disclosure of operating segments [line items]
Sales revenue	392,261	451,125	399,278
Operating segments [member] \| Power products and other businesses [member] \| Intersegment [member]
Disclosure of operating segments [line items]
Sales revenue	30,068	25,307	22,480
Reconciling items [member]
Disclosure of operating segments [line items]
Sales revenue	(256,994)	(215,551)	(238,231)
Segment profit (loss)
Share of profit of investments accounted for using the equity method
Segment assets	1,332,762	1,329,844	1,166,794
Investments accounted for using the equity method
Depreciation and amortization
Capital expenditures
Impairment losses on non-financial assets
Provision (reversal) for credit and lease residual losses on receivables from financial services
Reconciling items [member] \| External customers [member]
Disclosure of operating segments [line items]
Sales revenue
Reconciling items [member] \| Intersegment [member]
Disclosure of operating segments [line items]
Sales revenue	¥ (256,994)	¥ (215,551)	¥ (238,231)

Segment Information - Summary_2

Segment Information - Summary of Segment Information (Parenthetical) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024		Mar. 31, 2023	Mar. 31, 2022
Disclosure of operating segments [line items]
Segment assets	¥ 29,774,150		¥ 24,670,067	¥ 23,973,153
Provisions for product warranties	593,180
Write-down of inventories recognized as an expense	12,220		8,400	11,295
Unallocated corporate assets [member]
Disclosure of operating segments [line items]
Segment assets	1,573,834		1,462,656	1,319,995
Product warranties [member]
Disclosure of operating segments [line items]
Provisions for product warranties	¥ 536,590	[1]	¥ 289,850	¥ 118,378

[1]Honda recognizes provisions for product warranties to cover future product warranty expenses. Honda recognizes costs for general warranties on products Honda sells and for specific warranty programs, including product recalls. Honda recognizes general estimated warranty costs at the time products are sold to customers. Honda also recognizes specific estimated warranty program costs when it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation, and a reliable estimate can be made of the amount of the obligation. These provisions are estimated based on historical warranty claim experience with consideration given to the expected level of future warranty costs, including current sales trends, the expected number of units to be affected and the estimated average repair cost per unit for warranty claims. Provisions for product warranties are utilized for expenditures based on the demand from customers and dealers. A portion of the product warranties is expected to be reimbursed by agreement with suppliers. The amount of expected reimbursement is ¥167,920 million as of March 31, 2024.

Segment Information - Sales Rev

Segment Information - Sales Revenue by Product or Service Groups (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Disclosure of products and services [line items]
Sales revenue	¥ 20,428,802	¥ 16,907,725	¥ 14,552,696
Motorcycles, all-terrain vehicles (ATVs), side-by-sides (SxS) and relevant parts [member]
Disclosure of products and services [line items]
Sales revenue	3,220,168	2,908,983	2,185,253
Automobiles and relevant parts [member]
Disclosure of products and services [line items]
Sales revenue	15,227,546	12,093,972	10,582,764
Financial services [member]
Disclosure of products and services [line items]
Sales revenue	1,588,827	1,453,645	1,385,401
Power products and relevant parts [member]
Disclosure of products and services [line items]
Sales revenue	292,563	360,385	294,577
Others [member]
Disclosure of products and services [line items]
Sales revenue	¥ 99,698	¥ 90,740	¥ 104,701

Segment Information - Sales R_2

Segment Information - Sales Revenue and Carrying Amounts of Non-current Assets Other Than Financial Instruments and Deferred Tax Assets Based on Location (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Disclosure of geographical areas [line items]
Sales revenue	¥ 20,428,802	¥ 16,907,725	¥ 14,552,696
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	9,790,648	9,038,952	9,296,091
External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	20,428,802	16,907,725	14,552,696
Japan [member]
Disclosure of geographical areas [line items]
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	3,054,330	2,937,148	3,036,832
Japan [member] \| External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	2,634,505	2,409,584	2,354,532
United States [member]
Disclosure of geographical areas [line items]
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	4,914,193	4,373,329	4,490,562
United States [member] \| External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	10,343,985	7,905,936	6,728,800
Other Countries [member]
Disclosure of geographical areas [line items]
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	1,822,125	1,728,475	1,768,697
Other Countries [member] \| External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	¥ 7,450,312	¥ 6,592,205	¥ 5,469,364

Cash and Cash Equivalents - Sum

Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Cash and cash equivalents [abstract]
Cash and deposits	¥ 3,381,610	¥ 2,822,949
Cash equivalents	1,572,955	980,065
Total	¥ 4,954,565	¥ 3,803,014	¥ 3,674,931	¥ 2,758,020

Trade Receivables - Summary of

Trade Receivables - Summary of Trade Receivables (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Disclosure of financial assets [line items]
Trade receivables	¥ 1,240,090	¥ 1,060,271
Trade receivables [member]
Disclosure of financial assets [line items]
Allowance for impairment losses	(8,402)	(8,620)	¥ (8,845)	¥ (10,521)
Gross carrying amount [member] \| Trade accounts and notes receivable [member]
Disclosure of financial assets [line items]
Trade receivables	986,390	900,312
Gross carrying amount [member] \| Other [member]
Disclosure of financial assets [line items]
Trade receivables	¥ 262,102	¥ 168,579

Trade Receivables - Changes in

Trade Receivables - Changes in Allowance for Impairment Losses on Trade Receivables (Detail) - Trade receivables [member] - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Disclosure of financial assets [line items]
Balance at beginning of year	¥ 8,620	¥ 8,845	¥ 10,521
Remeasurement	274	297	260
Write-offs	(1,114)	(757)	(2,648)
Exchange differences on translating foreign operations	622	235	712
Balance at end of year	¥ 8,402	¥ 8,620	¥ 8,845

Receivables from Financial Se_3

Receivables from Financial Services - Summary of Receivables from Financial Services (Detail) - JPY (¥) ¥ in Millions		Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Disclosure of financial assets [line items]
Receivables from financial services		¥ 8,175,270	¥ 5,894,752
Unearned interest income and fees		(23,364)	(15,278)
Current assets		2,558,594	1,899,493
Non-current assets		5,616,676	3,995,259
Receivables from financial services		8,175,270	5,894,752
Retail [member]
Disclosure of financial assets [line items]
Receivables from financial services	[1]	7,330,459	5,363,260
Allowance for credit losses		(65,479)	(46,083)	¥ (36,767)	¥ (34,286)
Receivables from financial services	[1]	7,330,459	5,363,260
Finance lease [member]
Disclosure of financial assets [line items]
Allowance for credit losses		(555)	(465)	(487)	(813)
Wholesale [member]
Disclosure of financial assets [line items]
Receivables from financial services		707,035	421,166
Allowance for credit losses		(2,965)	(2,104)	¥ (1,809)	¥ (2,267)
Receivables from financial services		707,035	421,166
Gross carrying amount [member]
Disclosure of financial assets [line items]
Receivables from financial services		8,267,633	5,958,682
Receivables from financial services		8,267,633	5,958,682
Gross carrying amount [member] \| Retail [member]
Disclosure of financial assets [line items]
Receivables from financial services		7,330,459	5,363,260
Receivables from financial services		7,330,459	5,363,260
Gross carrying amount [member] \| Finance lease [member]
Disclosure of financial assets [line items]
Receivables from financial services		230,139	174,256
Receivables from financial services		230,139	174,256
Gross carrying amount [member] \| Wholesale [member]
Disclosure of financial assets [line items]
Receivables from financial services		707,035	421,166
Receivables from financial services		707,035	421,166
Financial Services receivables [member]
Disclosure of financial assets [line items]
Allowance for credit losses		¥ (68,999)	¥ (48,652)

[1]The tables above represent the gross amounts of retail receivables by stages of ECL model since the expected credit losses are measured collectively by our finance subsidiaries and the balances of those receivables are not directly allocated to the risk ratings.

Receivables from Financial Se_4

Receivables from Financial Services - Gross Investment in Lease and Present Value of Minimum Lease Payments Receivable (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Disclosure of maturity analysis of finance lease payments receivable [line items]
Gross investment in the lease	¥ 138,424	¥ 109,355
Unearned finance income	(12,134)	(8,417)
Unguaranteed residual value	80,485	58,040
Net investment in the lease	206,775	158,978
Within 1 year [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Gross investment in the lease	36,880	32,525
Between 1 and 2 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Gross investment in the lease	42,831	33,924
Between 2 and 3 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Gross investment in the lease	26,085	20,381
Between 3 and 4 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Gross investment in the lease	18,064	13,497
Between 4 and 5 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Gross investment in the lease	6,150	4,020
Later than 5 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Gross investment in the lease	¥ 8,414	¥ 5,008

Receivables from Financial Se_5

Receivables from Financial Services - Changes in Allowance for Credit Losses on Receivables from Financial Services (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Retail [member]
Disclosure of financial assets [line items]
Balance at beginning of year	¥ 46,083	¥ 36,767	¥ 34,286
Remeasurement	49,454	26,829	10,263
Write-offs	(36,663)	(19,942)	(12,256)
Exchange differences on translating foreign operations	6,605	2,429	4,474
Balance at end of year	65,479	46,083	36,767
Finance lease [member]
Disclosure of financial assets [line items]
Balance at beginning of year	465	487	813
Remeasurement	77	(3)	(255)
Write-offs	(43)	(35)	(97)
Exchange differences on translating foreign operations	56	16	26
Balance at end of year	555	465	487
Wholesale [member]
Disclosure of financial assets [line items]
Balance at beginning of year	2,104	1,809	2,267
Remeasurement	526	192	(726)
Write-offs	6	33	30
Exchange differences on translating foreign operations	329	70	238
Balance at end of year	2,965	2,104	1,809
Financial Services receivables [member]
Disclosure of financial assets [line items]
Balance at beginning of year	48,652	39,063	37,366
Remeasurement	50,057	27,018	9,282
Write-offs	(36,700)	(19,944)	(12,323)
Exchange differences on translating foreign operations	6,990	2,515	4,738
Balance at end of year	68,999	48,652	39,063
12-month ECL [member] \| Retail [member]
Disclosure of financial assets [line items]
Balance at beginning of year	26,467	23,789	23,480
Remeasurement	6,823	868	(2,513)
Write-offs	0
Exchange differences on translating foreign operations	3,849	1,810	2,822
Balance at end of year	37,139	26,467	23,789
12-month ECL [member] \| Finance lease [member]
Disclosure of financial assets [line items]
Balance at beginning of year	192	139	470
Remeasurement	46	49	(339)
Write-offs	0
Exchange differences on translating foreign operations	17	4	8
Balance at end of year	255	192	139
12-month ECL [member] \| Wholesale [member]
Disclosure of financial assets [line items]
Balance at beginning of year	976	1,176	1,741
Remeasurement	377	(263)	(649)
Write-offs	0
Exchange differences on translating foreign operations	149	63	84
Balance at end of year	1,502	976	1,176
12-month ECL [member] \| Financial Services receivables [member]
Disclosure of financial assets [line items]
Balance at beginning of year	27,635	25,104	25,691
Remeasurement	7,246	654	(3,501)
Write-offs	0
Exchange differences on translating foreign operations	4,015	1,877	2,914
Balance at end of year	38,896	27,635	25,104
Lifetime ECL [member] \| Not credit-impaired [member] \| Retail [member]
Disclosure of financial assets [line items]
Balance at beginning of year	11,072	5,514	5,923
Remeasurement	1,732	5,288	(925)
Write-offs	0
Exchange differences on translating foreign operations	1,474	270	516
Balance at end of year	14,278	11,072	5,514
Lifetime ECL [member] \| Not credit-impaired [member] \| Finance lease [member]
Disclosure of financial assets [line items]
Balance at beginning of year	69	92	184
Remeasurement	15	(28)	(98)
Write-offs	0
Exchange differences on translating foreign operations	10	5	6
Balance at end of year	94	69	92
Lifetime ECL [member] \| Not credit-impaired [member] \| Wholesale [member]
Disclosure of financial assets [line items]
Balance at beginning of year	10	17	62
Remeasurement	49	(8)	(46)
Write-offs	0
Exchange differences on translating foreign operations	3	1	1
Balance at end of year	62	10	17
Lifetime ECL [member] \| Not credit-impaired [member] \| Financial Services receivables [member]
Disclosure of financial assets [line items]
Balance at beginning of year	11,151	5,623	6,169
Remeasurement	1,796	5,252	(1,069)
Write-offs	0
Exchange differences on translating foreign operations	1,487	276	523
Balance at end of year	14,434	11,151	5,623
Lifetime ECL [member] \| Credit-impaired [member] \| Retail [member]
Disclosure of financial assets [line items]
Balance at beginning of year	8,544	7,464	4,883
Remeasurement	40,899	20,673	13,701
Write-offs	(36,663)	(19,942)	(12,256)
Exchange differences on translating foreign operations	1,282	349	1,136
Balance at end of year	14,062	8,544	7,464
Lifetime ECL [member] \| Credit-impaired [member] \| Finance lease [member]
Disclosure of financial assets [line items]
Balance at beginning of year	204	256	159
Remeasurement	16	(24)	182
Write-offs	(43)	(35)	(97)
Exchange differences on translating foreign operations	29	7	12
Balance at end of year	206	204	256
Lifetime ECL [member] \| Credit-impaired [member] \| Wholesale [member]
Disclosure of financial assets [line items]
Balance at beginning of year	1,118	616	464
Remeasurement	100	463	(31)
Write-offs	6	33	30
Exchange differences on translating foreign operations	177	6	153
Balance at end of year	1,401	1,118	616
Lifetime ECL [member] \| Credit-impaired [member] \| Financial Services receivables [member]
Disclosure of financial assets [line items]
Balance at beginning of year	9,866	8,336	5,506
Remeasurement	41,015	21,112	13,852
Write-offs	(36,700)	(19,944)	(12,323)
Exchange differences on translating foreign operations	1,488	362	1,301
Balance at end of year	¥ 15,669	¥ 9,866	¥ 8,336

Other Financial Assets - Summar

Other Financial Assets - Summary of Other Financial Assets (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Disclosure of financial assets [line items]
Other financial assets	¥ 1,197,725	¥ 1,118,962
Current assets	229,583	263,892
Non-current assets	968,142	855,070
Financial assets measured at amortized cost [member] \| Receivables other than trade receivables and receivables from financial services [member]
Disclosure of financial assets [line items]
Other financial assets	123,359	164,503
Financial assets measured at amortized cost [member] \| Debt securities [member]
Disclosure of financial assets [line items]
Other financial assets	69,751	85,235
Financial assets measured at amortized cost [member] \| Guaranty deposits [member]
Disclosure of financial assets [line items]
Other financial assets	13,662	12,689
Financial assets measured at amortized cost [member] \| Restricted cash [member]
Disclosure of financial assets [line items]
Other financial assets	118,129	65,723
Financial assets measured at amortized cost [member] \| Other [member]
Disclosure of financial assets [line items]
Other financial assets	4,422	4,167
Financial assets measured at amortized cost [member] \| Allowance for impairment losses [member]
Disclosure of financial assets [line items]
Other financial assets	(2,748)	(2,988)
Financial assets measured at fair value through other comprehensive income [member] \| Debt securities [member]
Disclosure of financial assets [line items]
Other financial assets	30,567	26,555
Financial assets measured at fair value through other comprehensive income [member] \| Equity securities [member]
Disclosure of financial assets [line items]
Other financial assets	522,703	475,138
Financial assets measured at fair value through profit or loss [member] \| Derivatives [member]
Disclosure of financial assets [line items]
Other financial assets	194,187	185,968
Financial assets measured at fair value through profit or loss [member] \| Debt securities [member]
Disclosure of financial assets [line items]
Other financial assets	¥ 123,693	¥ 101,972

Other Financial Assets - Summ_2

Other Financial Assets - Summary of Changes in Allowance for Impairment Losses (Detail) - Other financial assets [member] - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Disclosure of Doubtful Accounts for Other Financial Assets [line items]
Balance at beginning of year	¥ 2,988	¥ 3,212	¥ 3,358
Remeasurement	97	232	42
Write-offs	(345)	(461)	(191)
Exchange differences on translating foreign operations	8	5	3
Balance at end of year	¥ 2,748	¥ 2,988	¥ 3,212

Other Financial Assets - Major

Other Financial Assets - Major Securities Included in Equity Securities Designated as Financial Assets Measured at Fair Value Through Other Comprehensive Income (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Contemporary Amperex Technology Co., Ltd. [member]
Disclosure of Doubtful Accounts for Other Financial Assets [line items]
Financial assets measured at fair value through other comprehensive income	¥ 163,986	¥ 181,366
GM Cruise Holdings LLC [member]
Disclosure of Doubtful Accounts for Other Financial Assets [line items]
Financial assets measured at fair value through other comprehensive income	65,802	115,556
Stanley Electric Co., Ltd. [member]
Disclosure of Doubtful Accounts for Other Financial Assets [line items]
Financial assets measured at fair value through other comprehensive income	47,110	49,051
Mitsubishi UFJ Financial Group, Inc. [member]
Disclosure of Doubtful Accounts for Other Financial Assets [line items]
Financial assets measured at fair value through other comprehensive income	22,580	12,296
Tokio Marine Holdings, Inc. [member]
Disclosure of Doubtful Accounts for Other Financial Assets [line items]
Financial assets measured at fair value through other comprehensive income		8,349
Chubb Limited [Member]
Disclosure of Doubtful Accounts for Other Financial Assets [line items]
Financial assets measured at fair value through other comprehensive income		¥ 7,998
Renesas Electronics Corporation [Member]
Disclosure of Doubtful Accounts for Other Financial Assets [line items]
Financial assets measured at fair value through other comprehensive income	47,139
GS Yuasa Corporation [Member]
Disclosure of Doubtful Accounts for Other Financial Assets [line items]
Financial assets measured at fair value through other comprehensive income	¥ 15,464

Inventories - Summary of Invent

Inventories - Summary of Inventories (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Classes of current inventories [abstract]
Finished goods	¥ 1,521,673	¥ 1,154,926
Work in process	93,412	95,041
Raw materials	827,884	917,217
Total	¥ 2,442,969	¥ 2,167,184

Inventories - Additional Inform

Inventories - Additional Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Classes of current inventories [abstract]
Write-down of inventories recognized as an expense	¥ 12,220	¥ 8,400	¥ 11,295

Investments Accounted for Usi_3

Investments Accounted for Using the Equity Method - Equity in Affiliates and Joint Ventures (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Investments accounted for using the equity method [abstract]
Investments accounted for using the equity method, Affiliates	¥ 715,901	¥ 499,942
Investments accounted for using the equity method, Joint ventures	491,067	416,004
Investments accounted for using the equity method, Total	1,206,968	915,946	¥ 967,404
Honda's equity of undistributed earnings, Affiliates	111,787	87,284
Honda's equity of undistributed earnings, Joint ventures	279,915	259,675
Honda's equity of undistributed earnings, Total	¥ 391,702	¥ 346,959

Investments Accounted for Usi_4

Investments Accounted for Using the Equity Method - Additional Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disclosure of investments accounted for using equity method [line items]
Proportion of ownership interest in joint venture	50%
Share of profit of investments accounted for using the equity method [member]
Disclosure of investments accounted for using equity method [line items]
Impairment loss	¥ 0	¥ 68,545

Investments Accounted for Usi_5

Investments Accounted for Using the Equity Method - Share of Comprehensive Income of Affiliates and Joint Ventures (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Disclosure of investments accounted for using equity method [line items]
Profit for the year	¥ 110,817	¥ 117,445	¥ 202,512
Other comprehensive income	62,653	30,721	79,233
Comprehensive income for the year	173,470	148,166	281,745
Affiliates [member]
Disclosure of investments accounted for using equity method [line items]
Profit for the year	26,490	(81,504)	(17,844)
Other comprehensive income	31,797	25,920	26,673
Comprehensive income for the year	58,287	(55,584)	8,829
Joint ventures [member]
Disclosure of investments accounted for using equity method [line items]
Profit for the year	84,327	198,949	220,356
Other comprehensive income	30,856	4,801	52,560
Comprehensive income for the year	¥ 115,183	¥ 203,750	¥ 272,916

Investments Accounted for Usi_6

Investments Accounted for Using the Equity Method - Summarized Consolidated Financial Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Disclosure of investments accounted for using equity method [line items]
Current assets	¥ 11,872,564	¥ 9,578,348
Non-current assets	17,901,586	15,091,719
Total assets	29,774,150	24,670,067	¥ 23,973,153
Current liabilities	8,323,492	6,652,124
Non-current liabilities	8,444,786	6,515,652
Total liabilities	16,768,278	13,167,776
Total equity	13,005,872	11,502,291	10,772,546	¥ 9,372,839
Cash and cash equivalents included in current assets	4,954,565	3,803,014	3,674,931	¥ 2,758,020
Sales revenue	20,428,802	16,907,725	14,552,696
Depreciation and amortization	1,579,486	1,596,876	1,476,908
Income tax expense	459,794	162,256	309,489
Profit for the year	1,182,590	717,309	760,701
Other comprehensive income	893,359	438,092	934,952
Comprehensive income for the year	2,075,949	1,155,401	1,695,653
Honda's share of comprehensive income for the year	173,470	148,166	281,745
Dongfeng Honda Automobile Co Ltd [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	602,784	615,524
Non-current assets	361,830	279,691
Total assets	964,614	895,215
Current liabilities	552,719	520,257
Non-current liabilities	37,016	31,680
Total liabilities	589,735	551,937
Total equity	374,879	343,278
Carrying amount of its interest in the joint venture	186,827	171,003
Cash and cash equivalents included in current assets	163,009	99,862
Financial liabilities (excluding trade payables and provisions) included in current liabilities	6,549	6,803
Sales revenue	1,816,390	1,777,882	1,994,534
Interest income	5,653	8,441	10,653
Depreciation and amortization	29,311	28,052	25,996
Income tax expense	8,207	52,826	60,868
Profit for the year	27,985	157,914	182,989
Other comprehensive income	24,398	3,256	44,812
Comprehensive income for the year	52,383	161,170	227,801
Honda's share of comprehensive income for the year	26,261	80,652	114,508
Dividend from the joint venture to Honda	10,668	86,506	79,191
Dongfeng Honda Automobile Co Ltd [member] \| Equity attributable to owners of the parent [Member]
Disclosure of investments accounted for using equity method [line items]
Total equity	187,439	171,639
Comprehensive income for the year	26,192	80,585	113,901
Dongfeng Honda Automobile Co Ltd [member] \| Equity method adjustments [member]
Disclosure of investments accounted for using equity method [line items]
Total equity	(612)	(636)
Comprehensive income for the year	¥ 69	¥ 67	¥ 607

Investments Accounted for Usi_7

Investments Accounted for Using the Equity Method - Combined Financial Information of Affiliates and Joint Ventures (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Disclosure of investments accounted for using equity method [line items]
Current assets	¥ 11,872,564	¥ 9,578,348
Non-current assets	17,901,586	15,091,719
Total assets	29,774,150	24,670,067	¥ 23,973,153
Current liabilities	8,323,492	6,652,124
Non-current liabilities	8,444,786	6,515,652
Total liabilities	16,768,278	13,167,776
Total equity	13,005,872	11,502,291	10,772,546	¥ 9,372,839
Sales revenue	20,428,802	16,907,725	14,552,696
Profit for the year	1,182,590	717,309	760,701
Affiliates [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	2,082,922	1,828,866
Non-current assets	2,451,751	2,100,223
Total assets	4,534,673	3,929,089
Current liabilities	1,383,033	1,239,684
Non-current liabilities	705,870	542,804
Total liabilities	2,088,903	1,782,488
Total equity	2,445,770	2,146,601
Sales revenue	4,614,619	3,999,462	3,301,032
Profit for the year	53,285	(33,265)	81,398
Affiliates [member] \| Motorcycle business [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	72,203	64,051
Non-current assets	24,867	25,654
Total assets	97,070	89,705
Current liabilities	29,538	29,887
Non-current liabilities	3,542	3,109
Total liabilities	33,080	32,996
Total equity	63,990	56,709
Sales revenue	178,964	189,332	173,696
Profit for the year	12,744	10,038	7,233
Affiliates [member] \| Automobile business [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	1,988,023	1,746,374
Non-current assets	2,400,612	2,050,459
Total assets	4,388,635	3,796,833
Current liabilities	1,348,062	1,205,478
Non-current liabilities	701,643	539,040
Total liabilities	2,049,705	1,744,518
Total equity	2,338,930	2,052,315
Sales revenue	4,425,320	3,800,943	3,120,190
Profit for the year	38,348	(45,204)	73,169
Affiliates [member] \| Power products and other businesses [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	22,696	18,441
Non-current assets	26,272	24,110
Total assets	48,968	42,551
Current liabilities	5,433	4,319
Non-current liabilities	685	655
Total liabilities	6,118	4,974
Total equity	42,850	37,577
Sales revenue	10,335	9,187	7,146
Profit for the year	2,193	1,901	996
Joint ventures [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	1,587,223	1,921,276
Non-current assets	884,808	679,875
Total assets	2,472,031	2,601,151
Current liabilities	1,348,973	1,674,446
Non-current liabilities	147,481	99,592
Total liabilities	1,496,454	1,774,038
Total equity	975,577	827,113
Sales revenue	5,111,037	5,437,401	5,428,098
Profit for the year	168,972	399,664	438,912
Joint ventures [member] \| Motorcycle business [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	376,630	337,603
Non-current assets	201,692	134,567
Total assets	578,322	472,170
Current liabilities	320,335	275,607
Non-current liabilities	72,977	23,272
Total liabilities	393,312	298,879
Total equity	185,010	173,291
Sales revenue	1,103,578	1,071,031	811,764
Profit for the year	100,242	93,766	62,907
Joint ventures [member] \| Automobile business [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	1,206,741	1,579,996
Non-current assets	682,236	544,319
Total assets	1,888,977	2,124,315
Current liabilities	1,026,763	1,397,048
Non-current liabilities	72,063	74,136
Total liabilities	1,098,826	1,471,184
Total equity	790,151	653,131
Sales revenue	4,003,276	4,360,348	4,612,394
Profit for the year	67,056	304,119	375,642
Joint ventures [member] \| Power products and other businesses [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	3,852	3,677
Non-current assets	880	989
Total assets	4,732	4,666
Current liabilities	1,875	1,791
Non-current liabilities	2,441	2,184
Total liabilities	4,316	3,975
Total equity	416	691
Sales revenue	4,183	6,022	3,940
Profit for the year	¥ 1,674	¥ 1,779	¥ 363

Equipment on Operating Leases -

Equipment on Operating Leases - Changes in Cost, Accumulated Depreciation and Impairment Losses, and the Carrying Amounts of Equipment on Operating Leases (Detail) - Equipment on operating leases [member] - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	¥ 4,726,292
Ending balance	5,202,768	¥ 4,726,292
Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	6,266,953	6,667,137
Additions	2,448,469	1,543,448
Sales or disposal	(2,662,279)	(2,357,684)
Exchange differences on translating foreign operations	625,564	414,052
Other
Ending balance	6,678,707	6,266,953
Accumulated depreciation and impairment losses [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(1,540,661)	(1,508,008)
Depreciation	(829,868)	(904,778)
Sales or disposal	1,043,821	955,122
Exchange differences on translating foreign operations	(134,587)	(77,740)
Other	(14,644)	(5,257)
Ending balance	¥ (1,475,939)	¥ (1,540,661)

Equipment on Operating Leases_2

Equipment on Operating Leases - Future Minimum Lease Payments Expected to be Received under Non-cancellable Operating Leases to be Received (Detail) - Equipment on operating leases [member] - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Disclosure of maturity analysis of finance lease payments receivable [line items]
Future minimum lease payments expected to be received under non-cancelable operating leases	¥ 1,889,853	¥ 1,531,178
Within 1 year [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Future minimum lease payments expected to be received under non-cancelable operating leases	810,011	737,110
Between 1 and 2 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Future minimum lease payments expected to be received under non-cancelable operating leases	614,883	458,830
Between 2 and 3 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Future minimum lease payments expected to be received under non-cancelable operating leases	314,854	220,722
Between 3 and 4 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Future minimum lease payments expected to be received under non-cancelable operating leases	108,572	78,727
Between 4 and 5 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Future minimum lease payments expected to be received under non-cancelable operating leases	31,106	25,641
Later than 5 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Future minimum lease payments expected to be received under non-cancelable operating leases	¥ 10,427	¥ 10,148

Equipment on Operating Leases_3

Equipment on Operating Leases - Additional Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Lease Income [Abstract]
Operating lease income	¥ 1,141,819	¥ 1,152,964

Property Plant and Equipment -

Property Plant and Equipment - Changes in Cost, Accumulated Depreciation and Impairment Losses, and the Carrying Amounts of Property, Plant and Equipment (Detail) - Property, plant and equipment [member] - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	¥ 3,168,109
Ending balance	3,234,413	¥ 3,168,109
Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	10,193,191	9,729,241
Additions	482,472	578,063
Reclassification
Sales or disposal	(328,868)	(387,584)
Deconsolidation	(157,911)	(109,629)
Exchange differences on translating foreign operations	808,105	392,982
Other	7,899	(9,882)
Ending balance	11,004,888	10,193,191
Accumulated depreciation and impairment losses [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(7,025,082)	(6,649,834)
Depreciation	(563,954)	(512,501)
Sales or disposal	295,447	352,915
Deconsolidation	115,522	105,589
Exchange differences on translating foreign operations	(593,073)	(294,357)
Other	665	(26,894)
Ending balance	(7,770,475)	(7,025,082)
Land [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	630,694
Ending balance	649,120	630,694
Land [member] \| Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	653,918	645,472
Additions	8,328	10,366
Reclassification	8,129	4,198
Sales or disposal	(4,078)	(9,980)
Deconsolidation	(7,346)	(3,580)
Exchange differences on translating foreign operations	15,409	7,167
Other	202	275
Ending balance	674,562	653,918
Land [member] \| Accumulated depreciation and impairment losses [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(23,224)	(22,919)
Depreciation	(6,086)	(6,025)
Sales or disposal	3,002	6,090
Deconsolidation	1,425	2,580
Exchange differences on translating foreign operations	(334)	(87)
Other	(225)	(2,863)
Ending balance	(25,442)	(23,224)
Buildings and structures [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	1,064,033
Ending balance	1,108,948	1,064,033
Buildings and structures [member] \| Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	2,758,854	2,698,266
Additions	35,397	35,335
Reclassification	74,106	47,021
Sales or disposal	(39,594)	(80,024)
Deconsolidation	(36,633)	(19,932)
Exchange differences on translating foreign operations	165,930	84,744
Other	(3,662)	(6,556)
Ending balance	2,954,398	2,758,854
Buildings and structures [member] \| Accumulated depreciation and impairment losses [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(1,694,821)	(1,633,202)
Depreciation	(107,219)	(96,136)
Sales or disposal	31,498	72,290
Deconsolidation	24,264	18,743
Exchange differences on translating foreign operations	(98,578)	(48,748)
Other	(594)	(7,768)
Ending balance	(1,845,450)	(1,694,821)
Machinery and equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	1,309,502
Ending balance	1,256,867	1,309,502
Machinery and equipment [member] \| Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	6,615,640	6,147,929
Additions	113,006	87,630
Reclassification	199,180	476,942
Sales or disposal	(285,196)	(297,580)
Deconsolidation	(109,783)	(82,733)
Exchange differences on translating foreign operations	609,316	285,024
Other	13,886	(1,572)
Ending balance	7,156,049	6,615,640
Machinery and equipment [member] \| Accumulated depreciation and impairment losses [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(5,306,138)	(4,992,710)
Depreciation	(450,649)	(410,340)
Sales or disposal	260,947	274,535
Deconsolidation	89,502	80,882
Exchange differences on translating foreign operations	(494,162)	(245,648)
Other	1,318	(12,857)
Ending balance	(5,899,182)	(5,306,138)
Construction in progress [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	163,880
Ending balance	219,478	163,880
Construction in progress [member] \| Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	164,779	237,574
Additions	325,741	444,732
Reclassification	(281,415)	(528,161)
Sales or disposal
Deconsolidation	(4,149)	(3,384)
Exchange differences on translating foreign operations	17,450	16,047
Other	(2,527)	(2,029)
Ending balance	219,879	164,779
Construction in progress [member] \| Accumulated depreciation and impairment losses [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(899)	(1,003)
Depreciation
Sales or disposal
Deconsolidation	331	3,384
Exchange differences on translating foreign operations	1	126
Other	166	(3,406)
Ending balance	¥ (401)	¥ (899)

Property, Plant and Equipment -

Property, Plant and Equipment - Summary of Changes in the Carrying Amounts of the Right-of-Use Assets (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disclosure Of Depreciation For The Right Of Use Assets [Line Items]
Opening Balance	¥ 308,345	¥ 307,700
Additions	94,486	84,154
Depreciation	(77,908)	(73,105)
Other	(1,912)	(10,404)
Ending balance	323,011	308,345
Land [member]
Disclosure Of Depreciation For The Right Of Use Assets [Line Items]
Opening Balance	86,368	81,637
Additions	7,887	10,386
Depreciation	(6,086)	(6,025)
Other	3,017	370
Ending balance	91,186	86,368
Buildings and structures [member]
Disclosure Of Depreciation For The Right Of Use Assets [Line Items]
Opening Balance	136,059	130,181
Additions	28,103	30,294
Depreciation	(18,433)	(15,887)
Other	(8,131)	(8,529)
Ending balance	137,598	136,059
Machinery and equipment [member]
Disclosure Of Depreciation For The Right Of Use Assets [Line Items]
Opening Balance	85,918	95,882
Additions	58,496	43,474
Depreciation	(53,389)	(51,193)
Other	3,202	(2,245)
Ending balance	¥ 94,227	¥ 85,918

Intangible Assets - Changes in

Intangible Assets - Changes in Cost, Accumulated Amortization and Impairment Losses, and Carrying Amounts of Intangible Assets (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	¥ 870,900
Ending balance	999,689	¥ 870,900
Cost [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	1,625,237	1,683,433
Additions	54,309	47,266
Internally developed	250,415	148,899
Sales or disposal	(159,248)	(281,963)
Exchange differences on translating foreign operations	63,725	23,653
Other	(4,266)	3,949
Ending balance	1,830,172	1,625,237
Accumulated amortization and impairment losses [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	(754,337)	(833,926)
Amortization	(185,664)	(179,597)
Sales or disposal	143,728	272,746
Exchange differences on translating foreign operations	(33,009)	(14,370)
Other	(1,201)	810
Ending balance	(830,483)	(754,337)
Capitalized development costs [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	668,362
Ending balance	729,191	668,362
Capitalized development costs [member] \| Cost [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	1,014,266	1,156,290
Additions
Internally developed	207,519	120,811
Sales or disposal	(128,194)	(267,115)
Exchange differences on translating foreign operations	12,224	4,280
Other	(4,254)
Ending balance	1,101,561	1,014,266
Capitalized development costs [member] \| Accumulated amortization and impairment losses [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	(345,904)	(462,641)
Amortization	(154,780)	(149,659)
Sales or disposal	128,194	267,115
Exchange differences on translating foreign operations	(1,935)	(719)
Other	2,055
Ending balance	(372,370)	(345,904)
Software [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	119,787
Ending balance	152,090	119,787
Software [member] \| Cost [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	517,550	462,251
Additions	13,144	12,163
Internally developed	42,896	28,088
Sales or disposal	(16,228)	(5,107)
Exchange differences on translating foreign operations	36,984	15,870
Other	3,636	4,285
Ending balance	597,982	517,550
Software [member] \| Accumulated amortization and impairment losses [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	(397,763)	(359,469)
Amortization	(30,029)	(29,058)
Sales or disposal	15,315	4,693
Exchange differences on translating foreign operations	(29,418)	(12,893)
Other	(3,997)	(1,036)
Ending balance	(445,892)	(397,763)
Other [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	82,751
Ending balance	118,408	82,751
Other [member] \| Cost [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	93,421	64,892
Additions	41,165	35,103
Internally developed
Sales or disposal	(14,826)	(9,741)
Exchange differences on translating foreign operations	14,517	3,503
Other	(3,648)	(336)
Ending balance	130,629	93,421
Other [member] \| Accumulated amortization and impairment losses [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	(10,670)	(11,816)
Amortization	(855)	(880)
Sales or disposal	219	938
Exchange differences on translating foreign operations	(1,656)	(758)
Other	741	1,846
Ending balance	¥ (12,221)	¥ (10,670)

Trade Payables - Summary of Tra

Trade Payables - Summary of Trade Payables (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Disclosure of financial liabilities [line items]
Trade payables	¥ 1,609,836	¥ 1,426,333
Trade accounts and notes payable [Member]
Disclosure of financial liabilities [line items]
Trade payables	1,310,944	1,181,893
Other [member]
Disclosure of financial liabilities [line items]
Trade payables	¥ 298,892	¥ 244,440

Financing Liabilities - Financi

Financing Liabilities - Financing Liabilities Presented in Current Liabilities (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Disclosure of detailed information about borrowings [line items]
Current financing liabilities	¥ 1,516,847	¥ 1,365,775
Reclassification from non-current liabilities (Current portion)	2,588,743	1,925,420
Total	4,105,590	3,291,195
Commercial paper [member]
Disclosure of detailed information about borrowings [line items]
Current financing liabilities	959,620	965,468
Loans [member]
Disclosure of detailed information about borrowings [line items]
Current financing liabilities	387,093	358,874
Medium-term notes [member]
Disclosure of detailed information about borrowings [line items]
Current financing liabilities	90,835
Asset-backed securities [member]
Disclosure of detailed information about borrowings [line items]
Current financing liabilities	¥ 79,299	¥ 41,433

Financing Liabilities - Weighte

Financing Liabilities - Weighted Average Interest Rates for Financing Liabilities Presented in Current Liabilities (Excluding Reclassification from Non-current Liabilities) (Detail)	Mar. 31, 2024	Mar. 31, 2023
Current borrowings [member] \| Weighted average [member]
Disclosure of detailed information about borrowings [line items]
Weighted average interest rate	4.94%	4.29%

Financing Liabilities - Finan_2

Financing Liabilities - Financing Liabilities Presented in Non-current Liabilities (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Disclosure of detailed information about borrowings [line items]
Non-current financing liabilities	¥ 8,646,710	¥ 6,299,393
Reclassification to current liabilities (Current portion)	(2,588,743)	(1,925,420)
Total	6,057,967	4,373,973
Loans [member]
Disclosure of detailed information about borrowings [line items]
Non-current financing liabilities	1,050,890	958,836
Medium-term notes [member]
Disclosure of detailed information about borrowings [line items]
Non-current financing liabilities	5,129,411	3,359,462
Corporate bonds [member]
Disclosure of detailed information about borrowings [line items]
Non-current financing liabilities	1,038,311	1,001,187
Asset-backed securities [member]
Disclosure of detailed information about borrowings [line items]
Non-current financing liabilities	¥ 1,428,098	¥ 979,908

Financing Liabilities - Interes

Financing Liabilities - Interest Rate Range and Payment Due Date for Financing Liabilities Presented in Non-current Liabilities (Including Reclassification to Current Liabilities) (Detail) - Non-current liabilities [member]	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Loans [member] \| Bottom of range [member]
Disclosure of financial instruments by type of interest rate [line items]
Interest rate	0.14%	0.14%
Payment due	2024	2023
Loans [member] \| Top of range [member]
Disclosure of financial instruments by type of interest rate [line items]
Interest rate	13.06%	12.90%
Payment due	2046	2046
Medium-term notes [member] \| Bottom of range [member]
Disclosure of financial instruments by type of interest rate [line items]
Interest rate	0.30%	0.30%
Payment due	2024	2023
Medium-term notes [member] \| Top of range [member]
Disclosure of financial instruments by type of interest rate [line items]
Interest rate	6.40%	5.88%
Payment due	2034	2031
Corporate bonds [member] \| Bottom of range [member]
Disclosure of financial instruments by type of interest rate [line items]
Interest rate	0.03%	0.01%
Payment due	2024	2023
Corporate bonds [member] \| Top of range [member]
Disclosure of financial instruments by type of interest rate [line items]
Interest rate	2.97%	2.97%
Payment due	2032	2032
Asset-backed securities [member] \| Bottom of range [member]
Disclosure of financial instruments by type of interest rate [line items]
Interest rate	0.11%	0.11%
Payment due	2024	2023
Asset-backed securities [member] \| Top of range [member]
Disclosure of financial instruments by type of interest rate [line items]
Interest rate	5.94%	5.50%
Payment due	2028	2028

Financing Liabilities - Pledged

Financing Liabilities - Pledged Assets for Financing Liabilities (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Borrowings [abstract]
Trade receivables	¥ 34,137	¥ 20,811
Receivables from financial services	1,520,521	944,414
Inventories	4,117
Equipment on operating leases	86,455	133,936
Property, plant and equipment	2,491	2,293
Total	¥ 1,647,721	¥ 1,101,454

Financing Liabilities - The Cha

Financing Liabilities - The Changes in Liabilities Arising from Financing Activities (Detail) - JPY (¥) ¥ in Millions		12 Months Ended
		Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Changes in liabilities arising from financing activities, beginning balance		¥ 8,046,402	¥ 8,459,950	¥ 8,004,531
Cash flows from financing activities		1,493,986	(1,046,886)	(311,323)
Cash flows from operating activities		(36,665)	(8,641)	(1,296)
Non-cash changes, Acquisitions		92,612	79,202	84,413
Non-cash changes, Changes in foreign currency exchange rates		949,591	494,202	614,998
Non-cash changes, Changes in fair value		(32,957)	85,721	67,396
Non-cash changes, Other		(5,257)	(17,146)	1,231
Changes in liabilities arising from financing activities, ending balance		10,507,712	8,046,402	8,459,950
Short-term financing liabilities [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Changes in liabilities arising from financing activities, beginning balance		1,365,775	906,543	1,299,347
Cash flows from financing activities		(24,382)	442,534	(472,420)
Cash flows from operating activities
Non-cash changes, Acquisitions
Non-cash changes, Changes in foreign currency exchange rates		177,888	27,055	78,863
Non-cash changes, Changes in fair value
Non-cash changes, Other		(2,434)	(10,357)	753
Changes in liabilities arising from financing activities, ending balance		1,516,847	1,365,775	906,543
Long-term financing liabilities [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Changes in liabilities arising from financing activities, beginning balance		6,299,393	7,196,013	6,421,638
Cash flows from financing activities		1,593,898	(1,356,965)	238,060
Cash flows from operating activities
Non-cash changes, Acquisitions
Non-cash changes, Changes in foreign currency exchange rates		751,082	459,754	526,822
Non-cash changes, Changes in fair value
Non-cash changes, Other		2,337	591	9,493
Changes in liabilities arising from financing activities, ending balance		8,646,710	6,299,393	7,196,013
Lease liabilities [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Changes in liabilities arising from financing activities, beginning balance		315,958	318,758	317,429
Cash flows from financing activities		(80,513)	(78,297)	(80,165)
Cash flows from operating activities
Non-cash changes, Acquisitions		92,612	79,202	84,413
Non-cash changes, Changes in foreign currency exchange rates		9,509	3,675	6,096
Non-cash changes, Changes in fair value
Non-cash changes, Other		(5,160)	(7,380)	(9,015)
Changes in liabilities arising from financing activities, ending balance		332,406	315,958	318,758
Derivative financial liabilities (assets) [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Changes in liabilities arising from financing activities, beginning balance	[1]	65,276	38,636	(33,883)
Cash flows from financing activities	[1]	4,983	(54,158)	3,202
Cash flows from operating activities	[1]	(36,665)	(8,641)	(1,296)
Non-cash changes, Acquisitions	[1]
Non-cash changes, Changes in foreign currency exchange rates	[1]	11,112	3,718	3,217
Non-cash changes, Changes in fair value	[1]	(32,957)	85,721	67,396
Non-cash changes, Other	[1]
Changes in liabilities arising from financing activities, ending balance	[1]	¥ 11,749	¥ 65,276	¥ 38,636

[1]Derivative financial liabilities (assets) are held by the Company and its finance subsidiaries to hedge foreign currency risk for principals and interests payment of long-term financing liabilities. The cash flows related to repayments of principals are included in cash flows from financing activities, while the cash flows related to interest paid are included in cash flows from operating activities.

Other Financial Liabilities - S

Other Financial Liabilities - Summary of Other Financial Liabilities (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Disclosure of financial liabilities [line items]
Other financial liabilities	¥ 657,777	¥ 612,846
Current liabilities	340,858	324,110
Non-current liabilities	316,919	288,736
Other financial liabilities	657,777	612,846
Lease liabilities [member]
Disclosure of financial liabilities [line items]
Other financial liabilities	332,406	315,958
Other financial liabilities	332,406	315,958
Financial liabilities measured at amortized cost [member]
Disclosure of financial liabilities [line items]
Other financial liabilities	88,779	53,920
Other financial liabilities	88,779	53,920
Financial liabilities measured at fair value through profit or loss [member] \| Derivatives [member]
Disclosure of financial liabilities [line items]
Other financial liabilities	236,592	242,968
Other financial liabilities	¥ 236,592	¥ 242,968

Provisions - Components of and

Provisions - Components of and Changes in Provisions (Detail) - JPY (¥) ¥ in Millions		12 Months Ended
		Mar. 31, 2024		Mar. 31, 2023	Mar. 31, 2022
Disclosure of other provisions [line items]
Beginning balance		¥ 632,870
Provision		593,180
Write-offs		(245,076)
Reversal		(94,247)
Exchange differences on translating foreign operations		64,996
Ending balance		951,723		¥ 632,870
Product warranties [member]
Disclosure of other provisions [line items]
Beginning balance	[1]	535,099
Provision		536,590	[1]	289,850	¥ 118,378
Write-offs	[1]	(221,054)
Reversal	[1]	(88,266)
Exchange differences on translating foreign operations	[1]	52,821
Ending balance	[1]	815,190		535,099
Other [member]
Disclosure of other provisions [line items]
Beginning balance		97,771
Provision		56,590
Write-offs		(24,022)
Reversal		(5,981)
Exchange differences on translating foreign operations		12,175
Ending balance		¥ 136,533		¥ 97,771

[1]Honda recognizes provisions for product warranties to cover future product warranty expenses. Honda recognizes costs for general warranties on products Honda sells and for specific warranty programs, including product recalls. Honda recognizes general estimated warranty costs at the time products are sold to customers. Honda also recognizes specific estimated warranty program costs when it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation, and a reliable estimate can be made of the amount of the obligation. These provisions are estimated based on historical warranty claim experience with consideration given to the expected level of future warranty costs, including current sales trends, the expected number of units to be affected and the estimated average repair cost per unit for warranty claims. Provisions for product warranties are utilized for expenditures based on the demand from customers and dealers. A portion of the product warranties is expected to be reimbursed by agreement with suppliers. The amount of expected reimbursement is ¥167,920 million as of March 31, 2024.

Provisions - Components of an_2

Provisions - Components of and Changes in Provisions (Parenthetical) (Detail) ¥ in Millions	Mar. 31, 2024 JPY (¥)
Disclosure of other provisions [abstract]
Provision for Product Warranties Expected Reimbursement	¥ 167,920

Provisions - Current Liabilitie

Provisions - Current Liabilities and Non-current Liabilities of Provisions (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Disclosure of other provisions [abstract]
Current liabilities	¥ 566,722	¥ 362,701
Non-current liabilities	385,001	270,169
Total	¥ 951,723	¥ 632,870

Employee Benefits - Additional

Employee Benefits - Additional Information (Detail) ¥ in Millions	12 Months Ended
	Mar. 31, 2024 JPY (¥)
Japanese plans [member]
Disclosure of defined benefit plans [line items]
Contribiution in pension plan	¥ 19,970
Foreign plans [member]
Disclosure of defined benefit plans [line items]
Contribiution in pension plan	¥ 18,282

Employee Benefits - Changes in

Employee Benefits - Changes in Present Value of Defined Benefit Obligations and Fair Value of Plan Assets (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Remeasurements:
Net defined benefit liabilities (assets)	¥ (148,296)	¥ (180,700)
Japanese plans [member]
Remeasurements:
Effects of asset ceiling	123,505
Net defined benefit liabilities (assets)	(42,162)	(76,028)
Foreign plans [member]
Remeasurements:
Effects of asset ceiling	86,321	62,516
Net defined benefit liabilities (assets)	130,043	108,502
Present value of defined benefit obligations [member] \| Japanese plans [member]
Disclosure of net defined benefit liability (asset) [line items]
Balance at beginning of year	1,160,727	1,262,245
Current service cost	27,397	30,632
Past service cost
Interest cost	13,944	9,732
Plan participants' contributions
Remeasurements:
Changes in demographic assumptions	(4,249)	(3,387)
Changes in financial assumptions	(44,232)	(71,936)
Other	(91)	12,291
Benefits paid	(59,464)	(63,085)
Deconsolidation	(12,640)	(15,765)
Exchange differences on translating foreign operations
Balance at end of year	1,081,392	1,160,727
Present value of defined benefit obligations [member] \| Foreign plans [member]
Disclosure of net defined benefit liability (asset) [line items]
Balance at beginning of year	925,961	1,087,526
Current service cost	17,702	22,555
Past service cost	(271)
Interest cost	47,108	40,151
Plan participants' contributions	4,447	4,165
Remeasurements:
Changes in demographic assumptions	(724)	(317)
Changes in financial assumptions	(14,686)	(220,863)
Other	(1,446)	38,427
Benefits paid	(66,563)	(116,150)
Deconsolidation
Exchange differences on translating foreign operations	125,595	70,467
Balance at end of year	1,037,123	925,961
Fair value of plan assets [member] \| Japanese plans [member]
Disclosure of net defined benefit liability (asset) [line items]
Balance at beginning of year	1,236,755	1,355,276
Interest income	15,030	10,589
Actual return on plan assets, excluding interest income	43,828	(76,690)
Employer contributions	20,108	20,409
Plan participants' contributions
Remeasurements:
Benefits paid	(54,727)	(58,544)
Deconsolidation	(13,935)	(14,285)
Exchange differences on translating foreign operations
Balance at end of year	1,247,059	1,236,755
Fair value of plan assets [member] \| Foreign plans [member]
Disclosure of net defined benefit liability (asset) [line items]
Balance at beginning of year	879,975	1,013,050
Interest income	45,291	37,211
Actual return on plan assets, excluding interest income	(6,964)	(137,659)
Employer contributions	16,819	21,178
Plan participants' contributions	4,447	4,165
Remeasurements:
Benefits paid	(66,563)	(116,150)
Deconsolidation
Exchange differences on translating foreign operations	120,396	58,180
Balance at end of year	¥ 993,401	¥ 879,975

Employee Benefits - Changes i_2

Employee Benefits - Changes in Present Value of Defined Benefit Obligations and Fair Value of Plan Assets (Parenthetical) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Disclosure of net defined benefit liability (asset) [line items]
Net defined benefit liabilities (assets)	¥ 148,296	¥ 180,700

Employee Benefits - Fair Value

Employee Benefits - Fair Value of Japanese and Foreign Pension Plan Assets By Asset Category (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Japanese plans [member]
Disclosure of fair value of plan assets [line items]
Cash and cash equivalents	¥ 14,251	¥ 20,230
General accounts	39,329	40,942
Separate accounts	29,350	23,130
Other	(13,653)	10,672
Total	1,247,059	1,236,755
Japanese plans [member] \| Real estate funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	204	398
Japanese plans [member] \| Private equity funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds
Japanese plans [member] \| Hedge funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	134,096	117,422
Japanese plans [member] \| Commingled and other mutual funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	153,755	153,171
Japanese plans [member] \| Japan [member]
Disclosure of fair value of plan assets [line items]
Equity securities	25,610	22,388
Debt securities	55,023	67,278
Japanese plans [member] \| United States [member]
Disclosure of fair value of plan assets [line items]
Equity securities	211,349	195,611
Debt securities	165,586	171,690
Japanese plans [member] \| Other [member]
Disclosure of fair value of plan assets [line items]
Equity securities	176,579	172,074
Debt securities	255,580	241,749
Japanese plans [member] \| Quoted, Market price in active market [member]
Disclosure of fair value of plan assets [line items]
Cash and cash equivalents	14,251	20,230
General accounts
Separate accounts
Other	19	54
Total	773,493	665,590
Japanese plans [member] \| Quoted, Market price in active market [member] \| Real estate funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds
Japanese plans [member] \| Quoted, Market price in active market [member] \| Private equity funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds
Japanese plans [member] \| Quoted, Market price in active market [member] \| Hedge funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds
Japanese plans [member] \| Quoted, Market price in active market [member] \| Commingled and other mutual funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	1,289	1,419
Japanese plans [member] \| Quoted, Market price in active market [member] \| Japan [member]
Disclosure of fair value of plan assets [line items]
Equity securities	25,610	22,388
Debt securities	53,981	66,416
Japanese plans [member] \| Quoted, Market price in active market [member] \| United States [member]
Disclosure of fair value of plan assets [line items]
Equity securities	211,349	195,611
Debt securities	149,531	35,338
Japanese plans [member] \| Quoted, Market price in active market [member] \| Other [member]
Disclosure of fair value of plan assets [line items]
Equity securities	176,452	171,921
Debt securities	141,011	152,213
Japanese plans [member] \| Unquoted, Market price in active market [member]
Disclosure of fair value of plan assets [line items]
Cash and cash equivalents
General accounts	39,329	40,942
Separate accounts	29,350	23,130
Other	(13,672)	10,618
Total	473,566	571,165
Japanese plans [member] \| Unquoted, Market price in active market [member] \| Real estate funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	204	398
Japanese plans [member] \| Unquoted, Market price in active market [member] \| Private equity funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds
Japanese plans [member] \| Unquoted, Market price in active market [member] \| Hedge funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	134,096	117,422
Japanese plans [member] \| Unquoted, Market price in active market [member] \| Commingled and other mutual funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	152,466	151,752
Japanese plans [member] \| Unquoted, Market price in active market [member] \| Japan [member]
Disclosure of fair value of plan assets [line items]
Equity securities
Debt securities	1,042	862
Japanese plans [member] \| Unquoted, Market price in active market [member] \| United States [member]
Disclosure of fair value of plan assets [line items]
Equity securities
Debt securities	16,055	136,352
Japanese plans [member] \| Unquoted, Market price in active market [member] \| Other [member]
Disclosure of fair value of plan assets [line items]
Equity securities	127	153
Debt securities	114,569	89,536
Foreign plans [member]
Disclosure of fair value of plan assets [line items]
Cash and cash equivalents	8,946	6,929
General accounts
Separate accounts
Other	43,961	9,416
Total	993,401	879,975
Foreign plans [member] \| Real estate funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	78,832	73,017
Foreign plans [member] \| Private equity funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	171,660	162,414
Foreign plans [member] \| Hedge funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	31,495	26,061
Foreign plans [member] \| Commingled and other mutual funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	464,649	454,352
Foreign plans [member] \| Japan [member]
Disclosure of fair value of plan assets [line items]
Equity securities	403	398
Debt securities	414	768
Foreign plans [member] \| United States [member]
Disclosure of fair value of plan assets [line items]
Equity securities	12,308	13,794
Debt securities	161,319	114,757
Foreign plans [member] \| Other [member]
Disclosure of fair value of plan assets [line items]
Equity securities	6,764	7,413
Debt securities	12,650	10,656
Foreign plans [member] \| Quoted, Market price in active market [member]
Disclosure of fair value of plan assets [line items]
Cash and cash equivalents	8,946	6,929
General accounts
Separate accounts
Other	424	263
Total	28,845	28,797
Foreign plans [member] \| Quoted, Market price in active market [member] \| Real estate funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds
Foreign plans [member] \| Quoted, Market price in active market [member] \| Private equity funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds
Foreign plans [member] \| Quoted, Market price in active market [member] \| Hedge funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds
Foreign plans [member] \| Quoted, Market price in active market [member] \| Commingled and other mutual funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds
Foreign plans [member] \| Quoted, Market price in active market [member] \| Japan [member]
Disclosure of fair value of plan assets [line items]
Equity securities	403	398
Debt securities
Foreign plans [member] \| Quoted, Market price in active market [member] \| United States [member]
Disclosure of fair value of plan assets [line items]
Equity securities	12,308	13,794
Debt securities
Foreign plans [member] \| Quoted, Market price in active market [member] \| Other [member]
Disclosure of fair value of plan assets [line items]
Equity securities	6,764	7,413
Debt securities
Foreign plans [member] \| Unquoted, Market price in active market [member]
Disclosure of fair value of plan assets [line items]
Cash and cash equivalents
General accounts
Separate accounts
Other	43,537	9,153
Total	964,556	851,178
Foreign plans [member] \| Unquoted, Market price in active market [member] \| Real estate funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	78,832	73,017
Foreign plans [member] \| Unquoted, Market price in active market [member] \| Private equity funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	171,660	162,414
Foreign plans [member] \| Unquoted, Market price in active market [member] \| Hedge funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	31,495	26,061
Foreign plans [member] \| Unquoted, Market price in active market [member] \| Commingled and other mutual funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	464,649	454,352
Foreign plans [member] \| Unquoted, Market price in active market [member] \| Japan [member]
Disclosure of fair value of plan assets [line items]
Equity securities
Debt securities	414	768
Foreign plans [member] \| Unquoted, Market price in active market [member] \| United States [member]
Disclosure of fair value of plan assets [line items]
Equity securities
Debt securities	161,319	114,757
Foreign plans [member] \| Unquoted, Market price in active market [member] \| Other [member]
Disclosure of fair value of plan assets [line items]
Equity securities
Debt securities	¥ 12,650	¥ 10,656

Employee Benefits - Significant

Employee Benefits - Significant Actuarial Assumptions Used to Determine Present Value of Defined Benefit Obligations (Detail)	Mar. 31, 2024	Mar. 31, 2023
Japanese plans [member]
Disclosure of defined benefit plans [line items]
Discount rate	1.60%	1.20%
Rate of salary increase	1.60%	1.60%
Foreign plans [member] \| Bottom of range [member]
Disclosure of defined benefit plans [line items]
Discount rate	4.90%	4.80%
Rate of salary increase	2%	2%
Foreign plans [member] \| Top of range [member]
Disclosure of defined benefit plans [line items]
Discount rate	5.20%	5.10%
Rate of salary increase	7.50%	4.40%

Employee Benefits - Effects on

Employee Benefits - Effects on Defined Benefit Obligations Due to Increase or Decrease in Discount Rate (Detail) - Discount rates [member] - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Japanese plans [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Effects on defined benefit obligations from a decrease in the discount rate	¥ 70,025	¥ 80,821
Effects on defined benefit obligations from a increase in the discount rate	63,047	72,450
Foreign plans [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Effects on defined benefit obligations from a decrease in the discount rate	67,928	57,236
Effects on defined benefit obligations from a increase in the discount rate	¥ 59,881	¥ 50,643

Employee Benefits - Effects o_2

Employee Benefits - Effects on Defined Benefit Obligations Due to Increase or Decrease in Discount Rate (Parenthetical) (Detail) - Discount rates [member]	Mar. 31, 2024
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Percentage of decrease in the discount rate	0.50%
Percentage of increase in the discount rate	0.50%

Employee Benefits - Weighted Av

Employee Benefits - Weighted Average Duration of Defined Benefit Obligations (Detail)	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Japanese plans [member]
Disclosure of defined benefit plans [line items]
Weighted average duration of defined benefit obligations	12 years	13 years
Foreign plans [member]
Disclosure of defined benefit plans [line items]
Weighted average duration of defined benefit obligations	11 years	11 years

Employee Benefits - Personnel E

Employee Benefits - Personnel Expenses Included in Consolidated Statements of Income (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Disclosure of defined benefit plans [abstract]
Personnel expenses	¥ 1,807,731	¥ 1,635,515	¥ 1,502,364

Equity - Financial Liabilities

Equity - Financial Liabilities and Equity (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Equity and liabilities [abstract]
Financing liabilities	¥ 10,163,557	¥ 7,665,168
Equity	¥ 13,005,872	¥ 11,502,291	¥ 10,772,546	¥ 9,372,839

Equity - Total Number of Shares

Equity - Total Number of Shares Authorized and Issued (Detail) - shares	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Total number of authorized shares
Common shares, no par value	7,086,000,000	7,086,000,000	7,086,000,000
Total number of issued shares
Balance at beginning of year	1,811,428,430
Changes during the year	3,468,571,570
Balance at end of year	5,280,000,000

Equity - Total Number of Shar_2

Equity - Total Number of Shares Authorized and Issued (Parenthetical) (Detail)	Feb. 29, 2024 JPY (¥)
Equity [abstract]
Cancellation of treasury stock	¥ 154,285,290

Equity - Additional Information

Equity - Additional Information (Detail)	12 Months Ended
Equity - Additional Information (Detail)	Mar. 31, 2024
Disclosure of classes of share capital [line items]
Percentage of cash dividends from retained earnings shall be appropriated as a capital reserve	10%
Percentage of capital reserve and legal reserve to common stock	25%
Bottom of range [member]
Disclosure of classes of share capital [line items]
Minimum percentage of paid-in amount or proceeds of issuance of shares allowed to be incorporated in common stock	50%

Equity - Total Number of Treasu

Equity - Total Number of Treasury Stock Held (Detail) - shares	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Disclosure of classes of share capital [line items]
Common shares	5,280,000,000	1,811,428,430	1,811,428,430	1,811,428,430
Treasury stock [member]
Disclosure of classes of share capital [line items]
Common shares	451,092,624	147,087,841	100,828,074

Equity - Changes in Other Compo

Equity - Changes in Other Components of Equity (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Disclosure of reserves within equity [line items]
Beginning balance	¥ 11,502,291	¥ 10,772,546	¥ 9,372,839
Ending balance	13,005,872	11,502,291	10,772,546
Remeasurements of defined benefit plans [member]
Disclosure of reserves within equity [line items]
Beginning balance
Adjustment during the year	(18,194)	3,304	117,489
Reclassification to retained earnings	18,194	(3,304)	(117,489)
Ending balance
Net changes in revaluation of financial assets measured at fair value through other comprehensive income [member]
Disclosure of reserves within equity [line items]
Beginning balance	126,940	145,720	88,570
Adjustment during the year	(17,924)	(19,030)	58,863
Reclassification to retained earnings	(479)	250	(1,713)
Ending balance	108,537	126,940	145,720
Exchange differences on translating foreign operations [member]
Disclosure of reserves within equity [line items]
Beginning balance	1,290,457	844,718	108,140
Adjustment during the year	913,456	445,739	736,578
Reclassification to retained earnings
Ending balance	2,203,913	1,290,457	844,718
Other components of equity [member]
Disclosure of reserves within equity [line items]
Beginning balance	1,417,397	990,438	196,710
Adjustment during the year	877,338	430,013	912,930
Reclassification to retained earnings	17,715	(3,054)	(119,202)
Ending balance	¥ 2,312,450	¥ 1,417,397	¥ 990,438

Equity - Each Component of Othe

Equity - Each Component of Other Comprehensive Income and Related Tax Effect Including Non-controlling Interests (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Items that will not be reclassified to profit or loss, Before-tax:
Remeasurements of defined benefit plans, Net changes, Before-tax	¥ (30,696)	¥ 7,192	¥ 153,785
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Net changes, Before-tax	(27,034)	(26,279)	76,909
Share of other comprehensive income of investments accounted for using the equity method, Net changes, Before-tax	8,976	294	1,862
Items that may be reclassified subsequently to profit or loss, Before-tax:
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Amount incurred during the year, Before-tax	149	(444)	(915)
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Reclassification to profit or loss, Before-tax	(78)	(166)	39
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Net changes, Before-tax	71	(610)	(876)
Exchange differences on translating foreign operations, Amount incurred during the year, Before-tax	880,235	427,650	680,724
Exchange differences on translating foreign operations, Reclassification to profit or loss, Before-tax	(5,185)	(4,690)
Exchange differences on translating foreign operations, Net changes, Before-tax	875,050	422,960	680,724
Share of other comprehensive income of investments accounted for using the equity method, Amount incurred during the year, Before-tax	57,139	32,436	79,484
Share of other comprehensive income of investments accounted for using the equity method, Reclassification to profit or loss, Before-tax	64	(102)	(65)
Share of other comprehensive income of investments accounted for using the equity method, Net changes, Before-tax	57,203	32,334	79,419
Total other comprehensive income, Before-tax	883,570	435,891	991,823
Items that will not be reclassified to profit or loss, Tax benefit (expense):
Remeasurements of defined benefit plans, Net changes, Tax benefit (expense)	11,765	(3,842)	(36,743)
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Net changes, Tax benefit (expense)	1,565	7,814	(18,274)
Share of other comprehensive income of investments accounted for using the equity method, Net changes, Tax benefit (expense)	(676)	(2)	(76)
Items that may be reclassified subsequently to profit or loss, Tax benefit (expense):
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Amount incurred during the year, Tax benefit (expense)	(83)	98	203
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Reclassification to profit or loss, Tax benefit (expense)	68	38	(9)
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Net changes, Tax benefit (expense)	(15)	136	194
Exchange differences on translating foreign operations, Amount incurred during the year, Tax benefit (expense)	(2,727)	(1,612)
Exchange differences on translating foreign operations, Reclassification to profit or loss, Tax benefit (expense)	2,727	1,612
Exchange differences on translating foreign operations, Net changes, Tax benefit (expense)
Share of other comprehensive income of investments accounted for using the equity method, Amount incurred during the year, Tax benefit (expense)	(2,850)	(1,905)	(1,972)
Share of other comprehensive income of investments accounted for using the equity method, Reclassification to profit or loss, Tax benefit (expense)
Share of other comprehensive income of investments accounted for using the equity method, Net changes, Tax benefit (expense)	(2,850)	(1,905)	(1,972)
Total other comprehensive income, Tax benefit (expense)	9,789	2,201	(56,871)
Items that will not be reclassified to profit or loss, Net-of-tax:
Remeasurements of defined benefit plans, Net changes, Net-of-tax	(18,931)	3,350	117,042
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Net changes, Net-of-tax	(25,469)	(18,465)	58,635
Share of other comprehensive income of investments accounted for using the equity method, Net changes, Net-of-tax	8,300	292	1,786
Items that may be reclassified subsequently to profit or loss, Net-of-tax:
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Amount incurred during the year, Net-of-tax	66	(346)	(712)
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Reclassification to profit or loss, Net-of-tax	(10)	(128)	30
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Net changes, Net-of-tax	56	(474)	(682)
Exchange differences on translating foreign operations, Amount incurred during the year, Net-of-tax	877,508	426,038	680,724
Exchange differences on translating foreign operations, Reclassification to profit or loss, Net-of-tax	(2,458)	(3,078)
Exchange differences on translating foreign operations, Net changes, Net-of-tax	875,050	422,960	680,724
Share of other comprehensive income of investments accounted for using the equity method, Amount incurred during the year, Net-of-tax	54,289	30,531	77,512
Share of other comprehensive income of investments accounted for using the equity method, Reclassification to profit or loss, Net-of-tax	64	(102)	(65)
Share of other comprehensive income of investments accounted for using the equity method, Net changes, Net-of-tax	54,353	30,429	77,447
Total other comprehensive income, net of tax	¥ 893,359	¥ 438,092	¥ 934,952

Equity - Components of Other Co

Equity - Components of Other Comprehensive Income Included in Non-controlling Interests (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Disclosure of analysis of other comprehensive income by item [line items]
Remeasurements of defined benefit plans	¥ (18,931)	¥ 3,350	¥ 117,042
Net changes in revaluation of financial assets measured at fair value through other comprehensive income	(25,469)	(18,465)	58,635
Exchange differences on translating foreign operations	875,050	422,960	680,724
Total	893,359	438,092	934,952
Non-controlling interests [Member]
Disclosure of analysis of other comprehensive income by item [line items]
Remeasurements of defined benefit plans	186	341	565
Net changes in revaluation of financial assets measured at fair value through other comprehensive income	6	88	(136)
Exchange differences on translating foreign operations	18,893	7,650	21,593
Total	¥ 19,085	¥ 8,079	¥ 22,022

Equity - Dividends from Retaine

Equity - Dividends from Retained Earnings (Detail) - JPY (¥) ¥ / shares in Units, ¥ in Millions	May 10, 2024	Nov. 09, 2023	May 11, 2023	Nov. 09, 2022	May 13, 2022	Nov. 05, 2021	May 14, 2021
Dividends 1 [abstract]
Dividend payout, Total amount of dividends (millions of yen)		¥ 141,949	¥ 99,915	¥ 102,219	¥ 111,256	¥ 95,130	¥ 93,272
Dividend payout, Dividend per share (yen)		¥ 87	¥ 60	¥ 60	¥ 65	¥ 55	¥ 54
Dividend payout, Record date		Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Mar. 31, 2021
Dividend payout, Effective date		Dec. 05, 2023	Jun. 06, 2023	Dec. 05, 2022	Jun. 06, 2022	Dec. 01, 2021	Jun. 07, 2021
Dividends payable, Total amount of dividends (millions of yen)	¥ 188,418
Dividends payable, Dividend per share (yen)	¥ 39
Dividends payable, Record date	Mar. 31, 2024
Dividends payable, Effective date	Jun. 04, 2024

Sales Revenue - Additional Info

Sales Revenue - Additional Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Receivables from contracts with customers: [abstract]
Revenue recognized included in the contract liability at the beginning of the year	¥ 273,224	¥ 219,873	¥ 199,902
Amortization of assets recognised cost	¥ 60,391	¥ 52,193	¥ 39,682

Sales Revenue - Summary of Reco

Sales Revenue - Summary of Reconciliation of the Disaggregated Sales Revenue with the Four Reportable Segments (Detail) - JPY (¥) ¥ in Millions		12 Months Ended
		Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total		¥ 20,428,802	¥ 16,907,725	¥ 14,552,696
External customers [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total		20,428,802	16,907,725	14,552,696
External customers [member] \| Japan [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total		2,634,505	2,409,584	2,354,532
Operating segments [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total		20,685,796	17,123,276	14,790,927
Operating segments [member] \| Motorcycle business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total		3,220,168	2,908,983	2,185,253
Operating segments [member] \| Automobile business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total		13,791,515	10,781,717	9,360,593
Operating segments [member] \| Financial services business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total		3,251,784	2,956,144	2,823,323
Operating segments [member] \| Power products and other businesses [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total		422,329	476,432	421,758
Operating segments [member] \| External customers [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		18,812,715	15,438,288	13,147,538
Revenue arising from the other sources	[1]	1,616,087	1,469,437	1,405,158
Total		20,428,802	16,907,725	14,552,696
Operating segments [member] \| External customers [member] \| Motorcycle business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		3,219,053	2,908,453	2,183,176
Revenue arising from the other sources	[1]	1,115	530	2,077
Total		3,220,168	2,908,983	2,185,253
Operating segments [member] \| External customers [member] \| Automobile business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		13,541,447	10,578,391	9,130,227
Revenue arising from the other sources	[1]	26,118	15,128	17,271
Total		13,567,565	10,593,519	9,147,498
Operating segments [member] \| External customers [member] \| Financial services business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		1,660,025	1,500,545	1,435,298
Revenue arising from the other sources	[1]	1,588,783	1,453,553	1,385,369
Total		3,248,808	2,954,098	2,820,667
Operating segments [member] \| External customers [member] \| Power products and other businesses [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		392,190	450,899	398,837
Revenue arising from the other sources	[1]	71	226	441
Total		392,261	451,125	399,278
Operating segments [member] \| External customers [member] \| Japan [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		1,959,248	1,733,266	1,668,249
Operating segments [member] \| External customers [member] \| Japan [member] \| Motorcycle business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		113,746	109,393	105,022
Operating segments [member] \| External customers [member] \| Japan [member] \| Automobile business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		1,586,358	1,375,593	1,337,860
Operating segments [member] \| External customers [member] \| Japan [member] \| Financial services business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		172,072	158,653	146,185
Operating segments [member] \| External customers [member] \| Japan [member] \| Power products and other businesses [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		87,072	89,627	79,182
Operating segments [member] \| External customers [member] \| North America [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		10,465,855	7,816,672	6,549,838
Operating segments [member] \| External customers [member] \| North America [member] \| Motorcycle business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		335,545	306,725	230,766
Operating segments [member] \| External customers [member] \| North America [member] \| Automobile business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		8,503,602	5,985,958	4,877,900
Operating segments [member] \| External customers [member] \| North America [member] \| Financial services business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		1,487,948	1,341,863	1,289,076
Operating segments [member] \| External customers [member] \| North America [member] \| Power products and other businesses [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		138,760	182,126	152,096
Operating segments [member] \| External customers [member] \| Europe [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		943,040	677,344	600,987
Operating segments [member] \| External customers [member] \| Europe [member] \| Motorcycle business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		351,850	250,088	202,254
Operating segments [member] \| External customers [member] \| Europe [member] \| Automobile business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		506,731	332,928	319,340
Operating segments [member] \| External customers [member] \| Europe [member] \| Financial services business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers
Operating segments [member] \| External customers [member] \| Europe [member] \| Power products and other businesses [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		84,459	94,328	79,393
Operating segments [member] \| External customers [member] \| Asia [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		4,294,480	4,318,326	3,686,238
Operating segments [member] \| External customers [member] \| Asia [member] \| Motorcycle business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		1,792,327	1,739,330	1,307,915
Operating segments [member] \| External customers [member] \| Asia [member] \| Automobile business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		2,446,250	2,523,613	2,314,425
Operating segments [member] \| External customers [member] \| Asia [member] \| Financial services business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		5	29	37
Operating segments [member] \| External customers [member] \| Asia [member] \| Power products and other businesses [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		55,898	55,354	63,861
Operating segments [member] \| External customers [member] \| Other regions [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		1,150,092	892,680	642,226
Operating segments [member] \| External customers [member] \| Other regions [member] \| Motorcycle business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		625,585	502,917	337,219
Operating segments [member] \| External customers [member] \| Other regions [member] \| Automobile business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		498,506	360,299	280,702
Operating segments [member] \| External customers [member] \| Other regions [member] \| Financial services business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers
Operating segments [member] \| External customers [member] \| Other regions [member] \| Power products and other businesses [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		¥ 26,001	¥ 29,464	¥ 24,305

[1]Revenue arising from the other sources primarily includes lease revenues recognized under IFRS 16 and interest recognized under IFRS 9.

Sales Revenue - Summary of Info

Sales Revenue - Summary of Information Regarding Receivables from Contracts with Customers and Contract Liabilities (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Receivables from contracts with customers: [abstract]
Trade receivables	¥ 982,118	¥ 893,559
Contract liabilities:
Other current liabilities	401,855	292,552
Other noncurrent liabilities	¥ 306,170	¥ 240,556

Sales Revenue - Summary of Reve

Sales Revenue - Summary of Revenue Expected to be Recognized in the Future Related to Performance Obligations that are Unsatisfied (or Partially Unsatisfied) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total	¥ 608,945	¥ 446,380
Within 1 year [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total	230,865	150,507
Between 1 and 5 years [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total	355,882	280,981
Later than 5 years [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total	¥ 22,198	¥ 14,892

Sales Revenue - Summary of Asse

Sales Revenue - Summary of Assets Recognized Costs Obtain a Contract With Customer (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Disclosure - Sales Revenue - Summary of Assets Recognized Costs Obtain a Contract With Customer [Abstract]
Assets recognized from the costs to obtain a contract with a customer	¥ 186,074	¥ 148,074

Research and Development - Summ

Research and Development - Summary of Research and Development Costs (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Material income and expense [abstract]
Research and development expenditures incurred during the reporting period	¥ 976,366	¥ 852,067	¥ 804,025
Amount capitalized	(207,519)	(120,811)	(159,174)
Amortization and impairment losses of capitalized development costs	154,780	149,659	142,205
Total	¥ 923,627	¥ 880,915	¥ 787,056

Finance Income and Finance Co_3

Finance Income and Finance Costs - Summary of Finance Income and Finance Costs (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Interest income:
Financial assets measured at amortized cost	¥ 169,287	¥ 69,217	¥ 22,847
Financial assets measured at fair value through other comprehensive income	798	497	185
Financial assets measured at fair value through profit or loss	3,610	3,357	2,595
Total	173,695	73,071	25,627
Interest expense:
Financial liabilities measured at amortized cost	(42,609)	(34,065)	(15,706)
Other	(17,022)	(2,047)	(1,161)
Total	(59,631)	(36,112)	(16,867)
Dividends received:
Financial assets measured at fair value through other comprehensive income	8,804	6,150	4,777
Financial assets measured at fair value through profit or loss
Gains (losses) on derivatives:
Financial assets and financial liabilities measured at fair value through profit or loss	(202)	(92,144)	(77,789)
Gains (losses) on foreign exchange	67,414	47,705	68,033
Other	(40,490)	(17,319)	(7,335)
Total	35,526	(55,608)	(12,314)
Total finance income and finance costs	¥ 149,590	¥ (18,649)	¥ (3,554)

Income Taxes - Profit Before In

Income Taxes - Profit Before Income Taxes and Income Tax Expense (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Disclosure of income taxes [Line Items]
Profit (loss) before income taxes	¥ 1,642,384	¥ 879,565	¥ 1,070,190
Income tax expense (benefit):
Current taxes	625,158	366,310	287,433
Deferred taxes	(165,364)	(204,054)	22,056
Total	459,794	162,256	309,489
Japan [member]
Disclosure of income taxes [Line Items]
Profit (loss) before income taxes	148,651	(40,638)	(42,213)
Income tax expense (benefit):
Current taxes	19,081	12,699	9,539
Deferred taxes	34,265	(92,631)	(4,081)
Total	53,346	(79,932)	5,458
Foreign [member]
Disclosure of income taxes [Line Items]
Profit (loss) before income taxes	1,493,733	920,203	1,112,403
Income tax expense (benefit):
Current taxes	606,077	353,611	277,894
Deferred taxes	(199,629)	(111,423)	26,137
Total	¥ 406,448	¥ 242,188	¥ 304,031

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Disclosure of income taxes [Line Items]
Statutory income tax rate	30.20%	30.20%	30.20%
Deferred tax assets recognized by entities that have suffered a loss in either the preceding or current period	¥ 629	¥ 19,414
Aggregate amounts of temporary differences relating to investments in subsidiaries and interests in joint ventures for which deferred tax liabilities are not recognized	¥ 8,112,152	6,956,545
Japan [member]
Disclosure of income taxes [Line Items]
Statutory income tax rate	30.20%
Deferred tax expense (income) relating to origination and reversal of temporary differences		¥ 96,195
Foreign [member] \| Subsidiaries and Joint Ventures [member]
Disclosure of income taxes [Line Items]
Minimum tax rate	15%
Foreign [member] \| Bottom of range [member]
Disclosure of income taxes [Line Items]
Statutory income tax rate	16%
Foreign [member] \| Top of range [member]
Disclosure of income taxes [Line Items]
Statutory income tax rate	34%

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Statutory Income Tax Rate to Average Effective Tax Rate (Detail)	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Reconciliation of average effective tax rate and applicable tax rate [abstract]
Statutory income tax rate	30.20%	30.20%	30.20%
Difference in statutory income tax rates of foreign subsidiaries	(5.40%)	(6.30%)	(4.50%)
Effects of investments accounted for using the equity method	(2.00%)	(4.00%)	(5.70%)
Effects of undistributed earnings and withholding taxes on royalty	6.10%	11.30%	7.10%
Changes in unrecognized deferred tax assets	0.10%	(10.30%)	1.40%
Effects of income and expense not taxable and deductible for tax purpose	0%	0.10%	0%
Effects of tax credit	(2.60%)	(2.90%)	(0.90%)
Other adjustments relating to prior years	(0.10%)	(0.50%)	(0.10%)
Adjustments for the uncertain tax treatments on income taxes	0.10%	0.60%	0.90%
Adjustments for the changes in income tax laws	0.20%	(0.60%)	0.10%
Other	1.40%	0.80%	0.40%
Average effective tax rate	28%	18.40%	28.90%

Income Taxes - Components by Ma

Income Taxes - Components by Major Factor in Deferred Tax Assets and Deferred Tax Liabilities (Detail) - JPY (¥) ¥ in Millions		Mar. 31, 2024	Mar. 31, 2023
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		¥ 170,856	¥ 105,792
Deferred tax liabilities		855,067	877,300
Gross carrying amount [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		767,378	681,262
Deferred tax liabilities		1,451,589	1,452,770
Net deferred tax assets (liabilities)		(684,211)	(771,508)
Gross carrying amount [member] \| Inventories [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		60,476	51,604
Gross carrying amount [member] \| Accrued expenses [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		75,627	56,926
Gross carrying amount [member] \| Provisions [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		170,286	133,007
Gross carrying amount [member] \| Property, plant and equipment [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		40,470	27,854
Deferred tax liabilities	[1]	154,256	173,881
Gross carrying amount [member] \| Intangible assets [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		75,630	47,995
Deferred tax liabilities		195,662	182,258
Gross carrying amount [member] \| Retirement benefit liabilities [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		59,951	64,275
Gross carrying amount [member] \| Lease liabilities [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	[1]	72,720	70,522
Gross carrying amount [member] \| Carryforward of unused tax losses [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		95,400	108,106
Gross carrying amount [member] \| Carryforward of unused tax credit [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		11,387	14,930
Gross carrying amount [member] \| Other [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	[1]	105,431	106,043
Gross carrying amount [member] \| Other financial assets [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities		55,074	59,275
Gross carrying amount [member] \| Operating leases [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities		776,937	772,991
Gross carrying amount [member] \| Undistributed earnings [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities		71,577	60,914
Gross carrying amount [member] \| Retirement benefit assets [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities		37,780	56,932
Gross carrying amount [member] \| Receivables from financial services [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities		63,070	68,005
Gross carrying amount [member] \| Other [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities		¥ 97,233	¥ 78,514

[1]Honda has adopted “Deferred Tax related to Assets and Liabilities arising from a Single Transaction (Amendments to IAS 12)” with a date of initial application of April 1, 2023 and the comparative information has been retrospectively adjusted.

Income Taxes - Changes in Defer

Income Taxes - Changes in Deferred Tax Assets and Deferred Tax Liabilities Recognized as Income Tax Expense in the Consolidated Statements of Income (Detail) - JPY (¥) ¥ in Millions		12 Months Ended
		Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets and deferred tax liabilities recognized as income tax expense		¥ (165,364)	¥ (204,054)	¥ 22,056
Inventories [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets and deferred tax liabilities recognized as income tax expense		(8,335)	(7,407)	(9,865)
Provisions [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets and deferred tax liabilities recognized as income tax expense		(26,423)	(27,854)	(3,491)
Property, plant and equipment [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets and deferred tax liabilities recognized as income tax expense		(41,544)	19,079	(5,960)
Retirement benefit liabilities (assets) [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets and deferred tax liabilities recognized as income tax expense		(1,840)	(4,149)	(4,991)
Operating leases [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets and deferred tax liabilities recognized as income tax expense		(93,321)	(153,429)	(35,308)
Undistributed earnings [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets and deferred tax liabilities recognized as income tax expense		8,355	(1,005)	4,198
Carryforward of unused tax losses [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets and deferred tax liabilities recognized as income tax expense		17,652	(42,172)	(1,608)
Carryforward of unused tax credit [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets and deferred tax liabilities recognized as income tax expense		4,238	9,504	16,102
Other [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets and deferred tax liabilities recognized as income tax expense	[1],[2]	¥ (24,146)	¥ 3,379	¥ 62,979

[1]Honda has adopted “Deferred Tax related to Assets and Liabilities arising from a Single Transaction (Amendments to IAS 12)” with a date of initial application of April 1, 2023 and the comparative information has been retrospectively adjusted.[2]The income tax expense recognized due to the decrease of deferred tax assets arising from accrued expenses included in other as of March 31, 2022 is ¥27,321 million.

Income Taxes - Changes in Def_2

Income Taxes - Changes in Deferred Tax Assets and Deferred Tax Liabilities Recognized as Income Tax Expense in the Consolidated Statements of Income (Parenthetical) (Detail) ¥ in Millions	12 Months Ended
	Mar. 31, 2022 JPY (¥)
Changes in deferred tax liability (asset) [abstract]
Income tax expenses recognized due to decrease of deferred tax assets arising from accrued expenses	¥ 27,321

Income Taxes - Deductible Tempo

Income Taxes - Deductible Temporary Differences, Carryforward of Unused Tax Losses and Unused Tax Credit for which Deferred Tax Assets are not Recognized (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Disclosure of temporary difference, unused tax losses and unused tax credits [abstract]
Deductible temporary differences	¥ 446,655	¥ 391,536
Carryforward of unused tax losses	439,849	532,191
Carryforward of unused tax credit	¥ 65,643	¥ 35,629

Income Taxes - Components by Ex

Income Taxes - Components by Expiry of the Carryforward of Unused Tax Losses for which Deferred Tax Assets are not Recognized (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax losses	¥ 439,849	¥ 532,191
Within 1 year [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax losses	4,088	13,331
Between 1 and 5 years [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax losses	95,320	82,173
Between 5 and 20 years [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax losses	55,480	107,052
Indefinite periods [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax losses	¥ 284,961	¥ 329,635

Income Taxes - Components by _2

Income Taxes - Components by Expiry of Carryforward of Unused Tax Credits for which Deferred Tax Assets are not Recognized (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax credit	¥ 65,643	¥ 35,629
Within 1 year [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax credit	38	5
Between 1 and 5 years [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax credit	65,574	35,611
Between 5 and 20 years [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax credit	31	13
Indefinite periods [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax credit

Earning Per Share - Summary of

Earning Per Share - Summary of Earnings Per Share (Detail) - JPY (¥) ¥ / shares in Units, ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Earnings per share [abstract]
Profit for the year attributable to owners of the parent	¥ 1,107,174	¥ 651,416	¥ 707,067
Weighted average number of common shares outstanding, basic	4,901,560,332	5,088,921,345	5,159,885,505
Basic earnings per share attributable to owners of the parent	¥ 225.88	¥ 128.01	¥ 137.03

Financial Risk Management - Add

Financial Risk Management - Additional Information (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Disclosure of nature and extent of risks arising from financial instruments [line items]
Amount accrued for estimated losses	¥ 0
Undiscounted maximum amount of payment for guarantee obligations	92,373	¥ 119,222
Guarantee of employee loans [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Undiscounted maximum amount of payment for guarantee obligations	¥ 5,034	¥ 5,988
Consumer finance receivables [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Collateral values in excess for percentage of carrying amounts	80%	80%
Dealer finance receivable [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Collateral values in excess for percentage of carrying amounts	100%	100%
Percentage of appreciation of the Japanese yen against the U.S. dollar [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Sensitivity analysis, percentage	1%	1%
Interest rate risk [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Sensitivity analysis, percentage	1%	1%

Financial Risk Management - For

Financial Risk Management - Foreign Currency Exchange Rate Risk Sensitivity Analysis (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Percentage of appreciation of the Japanese yen against the U.S. dollar [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Impact on profit before income taxes	¥ (4,138)	¥ (2,696)

Financial Risk Management - Int

Financial Risk Management - Interest Rate Risk Sensitivity Analysis (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Interest rate risk [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Impact on profit before income taxes	¥ (24,322)	¥ (2,092)

Financial Risk Management - Ana

Financial Risk Management - Analysis of the Age of Receivables from Financial Services that are Past Due (Detail) - JPY (¥) ¥ in Millions		Mar. 31, 2024	Mar. 31, 2023
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		¥ 8,175,270	¥ 5,894,752
Retail [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services	[1]	7,330,459	5,363,260
Wholesale [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		707,035	421,166
Financial assets past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		453,479	311,950
Financial assets past due [member] \| Less than 30 days past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		340,697	233,148
Financial assets past due [member] \| 30-59 days past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		75,257	55,802
Financial assets past due [member] \| 60-89 days past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		19,754	13,201
Financial assets past due [member] \| 90 days and greater past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		17,771	9,799
Financial assets past due [member] \| Retail [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		440,657	302,015
Financial assets past due [member] \| Retail [member] \| Less than 30 days past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		328,741	223,674
Financial assets past due [member] \| Retail [member] \| 30-59 days past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		74,948	55,675
Financial assets past due [member] \| Retail [member] \| 60-89 days past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		19,722	13,185
Financial assets past due [member] \| Retail [member] \| 90 days and greater past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		17,246	9,481
Financial assets past due [member] \| Finance lease [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		2,254	968
Financial assets past due [member] \| Finance lease [member] \| Less than 30 days past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		1,499	545
Financial assets past due [member] \| Finance lease [member] \| 30-59 days past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		258	118
Financial assets past due [member] \| Finance lease [member] \| 60-89 days past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		16	5
Financial assets past due [member] \| Finance lease [member] \| 90 days and greater past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		481	300
Financial assets past due [member] \| Wholesale [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		10,568	8,967
Financial assets past due [member] \| Wholesale [member] \| Less than 30 days past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		10,457	8,929
Financial assets past due [member] \| Wholesale [member] \| 30-59 days past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		51	9
Financial assets past due [member] \| Wholesale [member] \| 60-89 days past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		16	11
Financial assets past due [member] \| Wholesale [member] \| 90 days and greater past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		¥ 44	¥ 18

[1]The tables above represent the gross amounts of retail receivables by stages of ECL model since the expected credit losses are measured collectively by our finance subsidiaries and the balances of those receivables are not directly allocated to the risk ratings.

Financial Risk Management - Sum

Financial Risk Management - Summary of Retail Receivables Included In Consumer Finance Receivables (Detail) - JPY (¥) ¥ in Millions		Mar. 31, 2024	Mar. 31, 2023
Disclosure Of Finance Receivables [Line Items]
Consumer finance receivables		¥ 8,175,270	¥ 5,894,752
Retail [member]
Disclosure Of Finance Receivables [Line Items]
Consumer finance receivables	[1]	7,330,459	5,363,260
12-month ECL [member] \| Retail [member]
Disclosure Of Finance Receivables [Line Items]
Consumer finance receivables	[1]	6,919,715	4,985,289
Not credit-impaired [member] \| Lifetime ECL [member] \| Retail [member]
Disclosure Of Finance Receivables [Line Items]
Consumer finance receivables	[1]	374,582	356,005
Credit-impaired [member] \| Lifetime ECL [member] \| Retail [member]
Disclosure Of Finance Receivables [Line Items]
Consumer finance receivables	[1]	¥ 36,162	¥ 21,966

[1]The tables above represent the gross amounts of retail receivables by stages of ECL model since the expected credit losses are measured collectively by our finance subsidiaries and the balances of those receivables are not directly allocated to the risk ratings.

Financial Risk Management - Dea

Financial Risk Management - Dealer Finance Receivables and Undiscounted Maximum Amounts of Potential Payment for Loan Commitments (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Dealer finance receivables:
Dealer finance receivables	¥ 8,175,270	¥ 5,894,752
Loan commitments:
Loan commitments	92,373	119,222
Group A [member]
Dealer finance receivables:
Dealer finance receivables	536,551	303,203
Loan commitments:
Loan commitments	82,802	103,858
Group B [member]
Dealer finance receivables:
Dealer finance receivables	170,484	117,963
Loan commitments:
Loan commitments	9,571	15,364
Wholesale [member]
Dealer finance receivables:
Dealer finance receivables	707,035	421,166
12-month ECL [member]
Loan commitments:
Loan commitments	92,373	119,222
12-month ECL [member] \| Group A [member]
Dealer finance receivables:
Dealer finance receivables	527,138	297,885
Loan commitments:
Loan commitments	82,802	103,858
12-month ECL [member] \| Group B [member]
Dealer finance receivables:
Dealer finance receivables	166,726	116,156
Loan commitments:
Loan commitments	9,571	15,364
12-month ECL [member] \| Wholesale [member]
Dealer finance receivables:
Dealer finance receivables	693,864	414,041
Lifetime ECL [member] \| Not credit-impaired [member]
Loan commitments:
Loan commitments	0
Lifetime ECL [member] \| Not credit-impaired [member] \| Group A [member]
Dealer finance receivables:
Dealer finance receivables	3,403	706
Loan commitments:
Loan commitments	0
Lifetime ECL [member] \| Not credit-impaired [member] \| Group B [member]
Dealer finance receivables:
Dealer finance receivables	3,559	1,684
Loan commitments:
Loan commitments	0
Lifetime ECL [member] \| Not credit-impaired [member] \| Wholesale [member]
Dealer finance receivables:
Dealer finance receivables	6,962	2,390
Lifetime ECL [member] \| Credit-impaired [member]
Loan commitments:
Loan commitments	0
Lifetime ECL [member] \| Credit-impaired [member] \| Group A [member]
Dealer finance receivables:
Dealer finance receivables	6,010	4,612
Loan commitments:
Loan commitments	0
Lifetime ECL [member] \| Credit-impaired [member] \| Group B [member]
Dealer finance receivables:
Dealer finance receivables	199	123
Loan commitments:
Loan commitments	0
Lifetime ECL [member] \| Credit-impaired [member] \| Wholesale [member]
Dealer finance receivables:
Dealer finance receivables	¥ 6,209	¥ 4,735

Financial Risk Management - Unu

Financial Risk Management - Unused Portions of the Credit Facility (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Commercial paper [member]
Disclosure of unused portion of borrowing facility [line items]
Unused portions of the credit facility	¥ 900,657	¥ 729,096
Medium-term notes [member]
Disclosure of unused portion of borrowing facility [line items]
Unused portions of the credit facility	1,857,974	3,832,311
Credit facility [member]
Disclosure of unused portion of borrowing facility [line items]
Unused portions of the credit facility	¥ 2,758,631	¥ 4,561,407

Financial Risk Management - U_2

Financial Risk Management - Unused Portions of the Committed Lines of Credit (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Commercial paper programs [member]
Disclosure of unused portion of borrowing facility [line items]
Unused portions of the committed lines of credit	¥ 1,461,590	¥ 1,306,781
Other committed lines of credit [member]
Disclosure of unused portion of borrowing facility [line items]
Unused portions of the committed lines of credit	63,759	65,299
Committed lines of credit [member]
Disclosure of unused portion of borrowing facility [line items]
Unused portions of the committed lines of credit	¥ 1,525,349	¥ 1,372,080

Financial Risk Management - Non

Financial Risk Management - Non-derivative Financial Liabilities by Maturity (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Trade payables, carrying amount	¥ 1,609,836	¥ 1,426,333
Financing liabilities, carrying amount	10,163,557	7,665,168
Accrued expenses, carrying amount	638,319	419,570
Other financial liabilities, carrying amount	421,185	369,878
Non-derivative financial liabilities, carrying amount	12,832,897	9,880,949
Trade payables, contractual cash flows	1,609,836	1,426,333
Financing liabilities, contractual cash flows	10,941,618	7,996,385
Accrued expenses, contractual cash flows	638,319	419,570
Other financial liabilities, contractual cash flows	456,206	396,434
Non-derivative financial liabilities, contractual cash flows	13,645,979	10,238,722
Within 1 year [member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Trade payables, contractual cash flows	1,609,836	1,426,333
Financing liabilities, contractual cash flows	4,379,834	3,410,145
Accrued expenses, contractual cash flows	638,319	419,570
Other financial liabilities, contractual cash flows	117,190	87,685
Non-derivative financial liabilities, contractual cash flows	6,745,179	5,343,733
Between 1 and 5 years [member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Trade payables, contractual cash flows
Financing liabilities, contractual cash flows	5,875,709	4,074,986
Accrued expenses, contractual cash flows
Other financial liabilities, contractual cash flows	117,172	100,800
Non-derivative financial liabilities, contractual cash flows	5,992,881	4,175,786
Later than 5 years [member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Trade payables, contractual cash flows
Financing liabilities, contractual cash flows	686,075	511,254
Accrued expenses, contractual cash flows
Other financial liabilities, contractual cash flows	221,844	207,949
Non-derivative financial liabilities, contractual cash flows	¥ 907,919	¥ 719,203

Financial Risk Management - S_2

Financial Risk Management - Summary of Lease liabilities by maturity (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Disclosure Of Lease Liabilities By Maturity [Line Items]
Lease liabilities	¥ 332,406	¥ 315,958
Total contractual cash flows	367,428	342,515
Within 1 year [member]
Disclosure Of Lease Liabilities By Maturity [Line Items]
Total contractual cash flows	79,012	69,297
Between 1 and 5 years [member]
Disclosure Of Lease Liabilities By Maturity [Line Items]
Total contractual cash flows	101,205	87,428
Later than 5 years [member]
Disclosure Of Lease Liabilities By Maturity [Line Items]
Total contractual cash flows	¥ 187,211	¥ 185,790

Financial Risk Management - Der

Financial Risk Management - Derivative Financial Liabilities by Maturity (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities, contractual cash flows	¥ 280,172	¥ 268,955
Within 1 year [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities, contractual cash flows	121,922	109,112
Between 1 and 5 years [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities, contractual cash flows	154,387	137,056
Later than 5 years [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities, contractual cash flows	¥ 3,863	¥ 22,787

Fair Value - Additional Informa

Fair Value - Additional Information (Detail) - JPY (¥)	12 Months Ended
Fair Value - Additional Information (Detail) - JPY (¥)	Mar. 31, 2024	Mar. 31, 2023
Disclosure of fair value measurement of assets [abstract]
Percentage of auction rate securities guaranteed by government	95%
Transfers out of Level 1 into Level 2 of fair value hierarchy
Transfers out of Level 2 into Level 1 of fair value hierarchy

Fair Value - Assets and Liabili

Fair Value - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	¥ 1,197,725	¥ 1,118,962
Other financial liabilities	657,777	612,846
Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	69,751	85,235
Measured at fair value on a recurring basis [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	871,150	789,633
Other financial liabilities	236,592	242,968
Measured at fair value on a recurring basis [member] \| Financial liabilities measured at fair value through profit or loss [member] \| Foreign exchange instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities	100,708	95,412
Measured at fair value on a recurring basis [member] \| Financial liabilities measured at fair value through profit or loss [member] \| Interest rate instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities	133,381	141,786
Measured at fair value on a recurring basis [member] \| Financial liabilities measured at fair value through profit or loss [member] \| Other [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities	2,503	5,770
Measured at fair value on a recurring basis [member] \| Financial liabilities measured at fair value through profit or loss [member] \| Derivatives [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities	236,592	242,968
Measured at fair value on a recurring basis [member] \| Financial assets measured at fair value through profit or loss [member] \| Foreign exchange instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	80,347	29,026
Measured at fair value on a recurring basis [member] \| Financial assets measured at fair value through profit or loss [member] \| Interest rate instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	108,034	151,242
Measured at fair value on a recurring basis [member] \| Financial assets measured at fair value through profit or loss [member] \| Other [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	5,806	5,700
Measured at fair value on a recurring basis [member] \| Financial assets measured at fair value through profit or loss [member] \| Derivatives [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	194,187	185,968
Measured at fair value on a recurring basis [member] \| Financial assets measured at fair value through profit or loss [member] \| Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	123,693	101,972
Measured at fair value on a recurring basis [member] \| Financial assets measured at fair value through other comprehensive income [member] \| Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	30,567	26,555
Measured at fair value on a recurring basis [member] \| Financial assets measured at fair value through other comprehensive income [member] \| Equity securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	522,703	475,138
Measured at fair value on a recurring basis [member] \| Level 1 [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	462,754	368,582
Other financial liabilities
Measured at fair value on a recurring basis [member] \| Level 1 [member] \| Financial liabilities measured at fair value through profit or loss [member] \| Foreign exchange instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities
Measured at fair value on a recurring basis [member] \| Level 1 [member] \| Financial liabilities measured at fair value through profit or loss [member] \| Interest rate instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities
Measured at fair value on a recurring basis [member] \| Level 1 [member] \| Financial liabilities measured at fair value through profit or loss [member] \| Other [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities
Measured at fair value on a recurring basis [member] \| Level 1 [member] \| Financial liabilities measured at fair value through profit or loss [member] \| Derivatives [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities
Measured at fair value on a recurring basis [member] \| Level 1 [member] \| Financial assets measured at fair value through profit or loss [member] \| Foreign exchange instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets
Measured at fair value on a recurring basis [member] \| Level 1 [member] \| Financial assets measured at fair value through profit or loss [member] \| Interest rate instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets
Measured at fair value on a recurring basis [member] \| Level 1 [member] \| Financial assets measured at fair value through profit or loss [member] \| Other [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets
Measured at fair value on a recurring basis [member] \| Level 1 [member] \| Financial assets measured at fair value through profit or loss [member] \| Derivatives [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets
Measured at fair value on a recurring basis [member] \| Level 1 [member] \| Financial assets measured at fair value through profit or loss [member] \| Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	55,265	43,264
Measured at fair value on a recurring basis [member] \| Level 1 [member] \| Financial assets measured at fair value through other comprehensive income [member] \| Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets
Measured at fair value on a recurring basis [member] \| Level 1 [member] \| Financial assets measured at fair value through other comprehensive income [member] \| Equity securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	407,489	325,318
Measured at fair value on a recurring basis [member] \| Level 2 [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	282,834	260,457
Other financial liabilities	236,592	242,968
Measured at fair value on a recurring basis [member] \| Level 2 [member] \| Financial liabilities measured at fair value through profit or loss [member] \| Foreign exchange instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities	100,708	95,412
Measured at fair value on a recurring basis [member] \| Level 2 [member] \| Financial liabilities measured at fair value through profit or loss [member] \| Interest rate instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities	133,381	141,786
Measured at fair value on a recurring basis [member] \| Level 2 [member] \| Financial liabilities measured at fair value through profit or loss [member] \| Other [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities	2,503	5,770
Measured at fair value on a recurring basis [member] \| Level 2 [member] \| Financial liabilities measured at fair value through profit or loss [member] \| Derivatives [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities	236,592	242,968
Measured at fair value on a recurring basis [member] \| Level 2 [member] \| Financial assets measured at fair value through profit or loss [member] \| Foreign exchange instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	80,347	29,026
Measured at fair value on a recurring basis [member] \| Level 2 [member] \| Financial assets measured at fair value through profit or loss [member] \| Interest rate instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	108,034	151,242
Measured at fair value on a recurring basis [member] \| Level 2 [member] \| Financial assets measured at fair value through profit or loss [member] \| Other [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets
Measured at fair value on a recurring basis [member] \| Level 2 [member] \| Financial assets measured at fair value through profit or loss [member] \| Derivatives [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	188,381	180,268
Measured at fair value on a recurring basis [member] \| Level 2 [member] \| Financial assets measured at fair value through profit or loss [member] \| Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	63,886	53,634
Measured at fair value on a recurring basis [member] \| Level 2 [member] \| Financial assets measured at fair value through other comprehensive income [member] \| Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	30,567	26,555
Measured at fair value on a recurring basis [member] \| Level 2 [member] \| Financial assets measured at fair value through other comprehensive income [member] \| Equity securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets
Measured at fair value on a recurring basis [member] \| Level 3 [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	125,562	160,594
Other financial liabilities
Measured at fair value on a recurring basis [member] \| Level 3 [member] \| Derivatives [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	5,806	5,700	¥ 4,648
Measured at fair value on a recurring basis [member] \| Level 3 [member] \| Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	4,542	5,074	4,773
Measured at fair value on a recurring basis [member] \| Level 3 [member] \| Equity securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	115,214	149,820	¥ 133,038
Measured at fair value on a recurring basis [member] \| Level 3 [member] \| Financial liabilities measured at fair value through profit or loss [member] \| Foreign exchange instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities
Measured at fair value on a recurring basis [member] \| Level 3 [member] \| Financial liabilities measured at fair value through profit or loss [member] \| Interest rate instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities
Measured at fair value on a recurring basis [member] \| Level 3 [member] \| Financial liabilities measured at fair value through profit or loss [member] \| Other [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities
Measured at fair value on a recurring basis [member] \| Level 3 [member] \| Financial liabilities measured at fair value through profit or loss [member] \| Derivatives [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities
Measured at fair value on a recurring basis [member] \| Level 3 [member] \| Financial assets measured at fair value through profit or loss [member] \| Foreign exchange instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets
Measured at fair value on a recurring basis [member] \| Level 3 [member] \| Financial assets measured at fair value through profit or loss [member] \| Interest rate instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets
Measured at fair value on a recurring basis [member] \| Level 3 [member] \| Financial assets measured at fair value through profit or loss [member] \| Other [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	5,806	5,700
Measured at fair value on a recurring basis [member] \| Level 3 [member] \| Financial assets measured at fair value through profit or loss [member] \| Derivatives [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	5,806	5,700
Measured at fair value on a recurring basis [member] \| Level 3 [member] \| Financial assets measured at fair value through profit or loss [member] \| Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	4,542	5,074
Measured at fair value on a recurring basis [member] \| Level 3 [member] \| Financial assets measured at fair value through other comprehensive income [member] \| Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets
Measured at fair value on a recurring basis [member] \| Level 3 [member] \| Financial assets measured at fair value through other comprehensive income [member] \| Equity securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	¥ 115,214	¥ 149,820

Fair Value - Changes in Level 3

Fair Value - Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disclosure of fair value measurement of assets [line items]
Beginning balance	¥ 1,118,962
Ending balance	1,197,725	¥ 1,118,962
Debt securities [member]
Disclosure of fair value measurement of assets [line items]
Beginning balance	85,235
Ending balance	69,751	85,235
Measured at fair value on a recurring basis [member]
Disclosure of fair value measurement of assets [line items]
Beginning balance	789,633
Ending balance	871,150	789,633
Measured at fair value on a recurring basis [member] \| Level 3 [member]
Disclosure of fair value measurement of assets [line items]
Beginning balance	160,594
Ending balance	125,562	160,594
Measured at fair value on a recurring basis [member] \| Level 3 [member] \| Derivatives [member]
Disclosure of fair value measurement of assets [line items]
Beginning balance	5,700	4,648
Profit or loss	(723)	678
Other comprehensive income
Purchases
Sales
Transfer to level 1 due to listing
Exchange differences on translating foreign operations	829	374
Other
Ending balance	5,806	5,700
Unrealized gains or losses included in profit or loss on assets held	(723)	678
Measured at fair value on a recurring basis [member] \| Level 3 [member] \| Debt securities [member]
Disclosure of fair value measurement of assets [line items]
Beginning balance	5,074	4,773
Profit or loss	145	(136)
Other comprehensive income	(4,625)
Purchases	4,625
Sales	(1,156)
Transfer to level 1 due to listing
Exchange differences on translating foreign operations	479	437
Other
Ending balance	4,542	5,074
Unrealized gains or losses included in profit or loss on assets held	145	(136)
Measured at fair value on a recurring basis [member] \| Level 3 [member] \| Equity securities [member]
Disclosure of fair value measurement of assets [line items]
Beginning balance	149,820	133,038
Profit or loss
Other comprehensive income	(47,742)	9,156
Purchases	7,535	10,029
Sales	(160)	(1,144)
Transfer to level 1 due to listing		(1,551)
Exchange differences on translating foreign operations	1,408	292
Other	4,353
Ending balance	115,214	149,820
Unrealized gains or losses included in profit or loss on assets held

Fair Value - Carrying Amounts a

Fair Value - Carrying Amounts and Fair Values of Financial Assets and Financial Liabilities Measured at Amortized Cost (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Receivables from financial services	¥ 8,175,270	¥ 5,894,752
Debt securities	1,197,725	1,118,962
Financing liabilities	10,163,557	7,665,168
Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Debt securities	69,751	85,235
Fair value [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Receivables from financial services	7,964,497	5,696,283
Financing liabilities	10,008,013	7,440,205
Fair value [member] \| Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Debt securities	¥ 69,751	¥ 85,235

Offsetting of Financial Asset_3

Offsetting of Financial Assets and Financial Liabilities - Offsetting Information Regarding Financial Assets and Financial Liabilities (Detail) - Derivatives [member] - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Disclosure of detailed information about financial instruments [line items]
Gross amounts of recognized financial assets	¥ 194,187	¥ 185,968
Amounts offset in the consolidated statements of financial position, financial assets
Net amounts presented in the consolidated statements of financial position, financial assets	194,187	185,968
Amounts not offset due to not meeting offsetting criteria despite being subject to a master netting agreement or similar agreement, financial assets	(106,133)	(133,472)
Net Amounts, financial assets	88,054	52,496
Gross amounts of recognized financial liabilities	236,592	242,968
Amounts offset in the consolidated statements of financial position, financial liabilities
Net amounts presented in the consolidated statements of financial position, financial liabilities	236,592	242,968
Amounts not offset due to not meeting offsetting criteria despite being subject to a master netting agreement or similar agreement, financial liabilities	(106,133)	(133,472)
Net Amounts, financial liabilities	¥ 130,459	¥ 109,496

Commitments and Contingent Li_3

Commitments and Contingent Liabilities - Commitments for Purchases of Property, Plant and Equipment and Other Commitments (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Disclosure of contingent liabilities [abstract]
Commitments for purchases of property, plant and equipment and other commitments	¥ 108,440	¥ 107,865

Related Parties - Balances of R

Related Parties - Balances of Receivables and Payables with Affiliates and Joint Ventures (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Disclosure of transactions between related parties [line items]
Receivables	¥ 342,282	¥ 435,797
Payables	310,729	274,134
Affiliates [member]
Disclosure of transactions between related parties [line items]
Receivables	76,290	95,429
Payables	225,706	207,090
Joint ventures [member]
Disclosure of transactions between related parties [line items]
Receivables	265,992	340,368
Payables	¥ 85,023	¥ 67,044

Related Parties - Amount of Tra

Related Parties - Amount of Transactions with Affiliates and Joint Ventures (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Disclosure of transactions between related parties [line items]
Sales revenue	¥ 959,930	¥ 1,067,321	¥ 1,146,557
Purchase	2,062,790	1,682,181	1,370,387
Affiliates [member]
Disclosure of transactions between related parties [line items]
Sales revenue	141,323	125,318	93,187
Purchase	1,620,755	1,443,840	1,176,066
Joint ventures [member]
Disclosure of transactions between related parties [line items]
Sales revenue	818,607	942,003	1,053,370
Purchase	¥ 442,035	¥ 238,341	¥ 194,321

Related Parties - Additional I

Related Parties - Additional Information (Detail) ¥ in Millions, $ in Millions	Mar. 31, 2024 JPY (¥)	Mar. 31, 2024 USD ($)	Mar. 31, 2023 JPY (¥)	Mar. 31, 2023 USD ($)	Aug. 29, 2022 USD ($)
Disclosure of transactions between related parties [line items]
Investments in joint ventures \| ¥	¥ 491,067		¥ 416,004
L-H Battery Company, Inc [member]
Disclosure of transactions between related parties [line items]
Investments in joint ventures \| $		$ 891		$ 1,627	$ 1,730

Related Parties - Compensation

Related Parties - Compensation Paid to Directors (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Related party transactions [abstract]
Remuneration	¥ 1,209	¥ 679	¥ 696
STI (Short Term Incentive)	612	229	188
LTI (Long Term Incentive)	453	286	159
Total	¥ 2,274	¥ 1,194	¥ 1,043

Related Parties - Major Consoli

Related Parties - Major Consolidated Subsidiaries (Detail)	12 Months Ended
Related Parties - Major Consolidated Subsidiaries (Detail)	Mar. 31, 2024
Honda R&D Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Honda R&D Co., Ltd.
Country of Incorporation	Japan
Function	Research & Development
Percentage Ownership	100%
Percentage Voting Interest	100%
Honda Finance Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Honda Finance Co., Ltd.
Country of Incorporation	Japan
Function	Finance
Percentage Ownership	100%
Percentage Voting Interest	100%
American Honda Motor Co., Inc. [member]
Disclosure of subsidiaries [line items]
Company	American Honda Motor Co., Inc.
Country of Incorporation	U.S.A.
Function	Coordination of Subsidiaries Operation, Research & Development, Manufacturing and Sales
Percentage Ownership	100%
Percentage Voting Interest	100%
American Honda Finance Corporation [member]
Disclosure of subsidiaries [line items]
Company	American Honda Finance Corporation
Country of Incorporation	U.S.A.
Function	Finance
Percentage Ownership	100%
Percentage Voting Interest	100%
Honda Development and Manufacturing of America, LLC [member]
Disclosure of subsidiaries [line items]
Company	Honda Development and Manufacturing of America, LLC
Country of Incorporation	U.S.A.
Function	Research & Development and Manufacturing
Percentage Ownership	100%
Percentage Voting Interest	100%
Honda Canada Inc. [member]
Disclosure of subsidiaries [line items]
Company	Honda Canada Inc.
Country of Incorporation	Canada
Function	Manufacturing and Sales
Percentage Ownership	100%
Percentage Voting Interest	100%
Honda Canada Finance Inc. [member]
Disclosure of subsidiaries [line items]
Company	Honda Canada Finance Inc.
Country of Incorporation	Canada
Function	Finance
Percentage Ownership	100%
Percentage Voting Interest	100%
Honda de Mexico, S.A. de C.V. [member]
Disclosure of subsidiaries [line items]
Company	Honda de Mexico, S.A. de C.V.
Country of Incorporation	Mexico
Function	Manufacturing and Sales
Percentage Ownership	100%
Percentage Voting Interest	100%
Honda Motor Europe Limited [member]
Disclosure of subsidiaries [line items]
Company	Honda Motor Europe Limited
Country of Incorporation	U.K.
Function	Coordination of Subsidiaries Operation and Sales
Percentage Ownership	100%
Percentage Voting Interest	100%
Honda Finance Europe plc [member]
Disclosure of subsidiaries [line items]
Company	Honda Finance Europe plc
Country of Incorporation	U.K.
Function	Finance
Percentage Ownership	100%
Percentage Voting Interest	100%
Honda Motor (China) Investment Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Honda Motor (China) Investment Co., Ltd.
Country of Incorporation	China
Function	Coordination of Subsidiaries Operation and Sales
Percentage Ownership	100%
Percentage Voting Interest	100%
Honda Auto Parts Manufacturing Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Honda Auto Parts Manufacturing Co., Ltd.
Country of Incorporation	China
Function	Manufacturing
Percentage Ownership	100%
Percentage Voting Interest	100%
Honda Motorcycle & Scooter India (Private) Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Honda Motorcycle & Scooter India (Private) Ltd.
Country of Incorporation	India
Function	Manufacturing and Sales
Percentage Ownership	100%
Percentage Voting Interest	100%
Honda Cars India Limited [member]
Disclosure of subsidiaries [line items]
Company	Honda Cars India Limited
Country of Incorporation	India
Function	Manufacturing and Sales
Percentage Ownership	100%
Percentage Voting Interest	100%
P.T. Honda Prospect Motor [member]
Disclosure of subsidiaries [line items]
Company	P.T. Honda Prospect Motor
Country of Incorporation	Indonesia
Function	Manufacturing and Sales
Percentage Ownership	51%
Percentage Voting Interest	51%
Honda Malaysia Sdn Bhd [member]
Disclosure of subsidiaries [line items]
Company	Honda Malaysia Sdn Bhd
Country of Incorporation	Malaysia
Function	Manufacturing and Sales
Percentage Ownership	51%
Percentage Voting Interest	51%
Asian Honda Motor Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Asian Honda Motor Co., Ltd.
Country of Incorporation	Thailand
Function	Coordination of Subsidiaries Operation and Sales
Percentage Ownership	100%
Percentage Voting Interest	100%
Honda Automobile (Thailand) Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Honda Automobile (Thailand) Co., Ltd.
Country of Incorporation	Thailand
Function	Manufacturing and Sales
Percentage Ownership	89%
Percentage Voting Interest	89%
Thai Honda Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Thai Honda Co., Ltd.
Country of Incorporation	Thailand
Function	Manufacturing and Sales
Percentage Ownership	72.50%
Percentage Voting Interest	72.50%
Honda Vietnam Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Honda Vietnam Co., Ltd.
Country of Incorporation	Vietnam
Function	Manufacturing and Sales
Percentage Ownership	70%
Percentage Voting Interest	70%
Honda South America Ltda. [member]
Disclosure of subsidiaries [line items]
Company	Honda South America Ltda.
Country of Incorporation	Brazil
Function	Coordination of Subsidiaries Operation
Percentage Ownership	100%
Percentage Voting Interest	100%
Moto Honda da Amazonia Ltda. [member]
Disclosure of subsidiaries [line items]
Company	Moto Honda da Amazonia Ltda.
Country of Incorporation	Brazil
Function	Manufacturing and Sales
Percentage Ownership	100%
Percentage Voting Interest	100%

Subsequent Event - Additional I

Subsequent Event - Additional Information (Detail) - Major ordinary share transactions [member] - Issued capital [member] ¥ in Millions	11 Months Ended
	Mar. 31, 2024 JPY (¥) shares
Disclosure of non-adjusting events after reporting period [line items]
Number of shares to be acquired \| shares	180,000,000
Percentage of shares to be acquired	3.70%
Amount of shares to be acquired \| ¥	¥ 300,000