Johnson Controls International (JCI) 10-K14 Dec 232023 FY Annual reportFinancial data

Company Profile

Cover

Cover - USD ($) $ in Billions	12 Months Ended
Cover - USD ($) $ in Billions	Sep. 30, 2023	Nov. 30, 2023	Mar. 31, 2023
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Sep. 30, 2023
Current Fiscal Year End Date	--09-30
Document Transition Report	false
Entity File Number	001-13836
Entity Registrant Name	JOHNSON CONTROLS INTERNATIONAL PLC
Entity Incorporation, State or Country Code	L2
Entity Tax Identification Number	98-0390500
Entity Address, Address Line One	One Albert Quay
Entity Address, City or Town	Cork
Entity Address, Country	IE
Entity Address, Postal Zip Code	T12 X8N6
City Area Code	353
Local Phone Number	21-423-5000
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 Small Business	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 41.2
Entity Common Stock, Shares Outstanding		680,673,839
Document Financial Statement Error Correction [Flag]	true
Documents Incorporated by Reference	Portions of the definitive Proxy Statement to be delivered to shareholders in connection with the annual general meeting of shareholders to be held on March 13, 2024 are incorporated by reference into Part III.
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Entity Central Index Key	0000833444
Document Financial Statement Restatement Recovery Analysis [Flag]	false
Ordinary Shares, Par Value $0.01
Document Information [Line Items]
Title of 12(b) Security	Ordinary Shares, Par Value $0.01
Trading Symbol	JCI
Security Exchange Name	NYSE
3.625% Senior Notes due 2024
Document Information [Line Items]
Title of 12(b) Security	3.625% Senior Notes due 2024
Trading Symbol	JCI24A
Security Exchange Name	NYSE
1.375% Notes due 2025
Document Information [Line Items]
Title of 12(b) Security	1.375% Notes due 2025
Trading Symbol	JCI25A
Security Exchange Name	NYSE
3.900% Notes due 2026
Document Information [Line Items]
Title of 12(b) Security	3.900% Notes due 2026
Trading Symbol	JCI26A
Security Exchange Name	NYSE
0.375% Senior Notes due 2027
Document Information [Line Items]
Title of 12(b) Security	0.375% Senior Notes due 2027
Trading Symbol	JCI27
Security Exchange Name	NYSE
3.000% Senior Notes due 2028
Document Information [Line Items]
Title of 12(b) Security	3.000% Senior Notes due 2028
Trading Symbol	JCI28
Security Exchange Name	NYSE
1.750% Senior Notes due 2030
Document Information [Line Items]
Title of 12(b) Security	1.750% Senior Notes due 2030
Trading Symbol	JCI30
Security Exchange Name	NYSE
2.000% Sustainability-Linked Senior Notes due 2031
Document Information [Line Items]
Title of 12(b) Security	2.000% Sustainability-Linked Senior Notes due 2031
Trading Symbol	JCI31
Security Exchange Name	NYSE
1.000% Senior Notes due 2032
Document Information [Line Items]
Title of 12(b) Security	1.000% Senior Notes due 2032
Trading Symbol	JCI32
Security Exchange Name	NYSE
4.900% Senior Notes due 2032
Document Information [Line Items]
Title of 12(b) Security	4.900% Senior Notes due 2032
Trading Symbol	JCI32A
Security Exchange Name	NYSE
4.250% Senior Notes due 2035
Document Information [Line Items]
Title of 12(b) Security	4.250% Senior Notes due 2035
Trading Symbol	JCI35
Security Exchange Name	NYSE
6.000% Notes due 2036
Document Information [Line Items]
Title of 12(b) Security	6.000% Notes due 2036
Trading Symbol	JCI36A
Security Exchange Name	NYSE
5.70% Senior Notes due 2041
Document Information [Line Items]
Title of 12(b) Security	5.70% Senior Notes due 2041
Trading Symbol	JCI41B
Security Exchange Name	NYSE
5.250% Senior Notes due 2041
Document Information [Line Items]
Title of 12(b) Security	5.250% Senior Notes due 2041
Trading Symbol	JCI41C
Security Exchange Name	NYSE
4.625% Senior Notes due 2044
Document Information [Line Items]
Title of 12(b) Security	4.625% Senior Notes due 2044
Trading Symbol	JCI44A
Security Exchange Name	NYSE
5.125% Notes due 2045
Document Information [Line Items]
Title of 12(b) Security	5.125% Notes due 2045
Trading Symbol	JCI45B
Security Exchange Name	NYSE
6.950% Debentures due December 1, 2045
Document Information [Line Items]
Title of 12(b) Security	6.950% Debentures due December 1, 2045
Trading Symbol	JCI45A
Security Exchange Name	NYSE
4.500% Senior Notes due 2047
Document Information [Line Items]
Title of 12(b) Security	4.500% Senior Notes due 2047
Trading Symbol	JCI47
Security Exchange Name	NYSE
4.950% Senior Notes due 2064
Document Information [Line Items]
Title of 12(b) Security	4.950% Senior Notes due 2064
Trading Symbol	JCI64A
Security Exchange Name	NYSE

Audit Information

Audit Information	12 Months Ended
Audit Information	Sep. 30, 2023
Audit Information [Abstract]
Auditor Firm ID	238
Auditor Name	PricewaterhouseCoopers LLP
Auditor Location	Milwaukee, Wisconsin

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Millions	12 Months Ended
Consolidated Statements of Income - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Net sales
Net sales	$ 26,793	$ 25,299	$ 23,668
Cost of sales
Cost of sales	17,822	16,956	15,609
Gross profit	8,971	8,343	8,059
Selling, general and administrative expenses	(6,181)	(5,945)	(5,258)
Restructuring and impairment costs	(1,064)	(721)	(242)
Net financing charges	(281)	(213)	(206)
Equity income	265	246	261
Income from continuing operations before income taxes	1,710	1,710	2,614
Income tax provision (benefit)	(323)	(13)	868
Income from continuing operations	2,033	1,723	1,746
Income from discontinued operations, net of tax (Note 3)	0	0	124
Net income	2,033	1,723	1,870
Income from continuing operations attributable to noncontrolling interests	184	191	233
Net income attributable to Johnson Controls	1,849	1,532	1,637
Amounts attributable to Johnson Controls ordinary shareholders:
Income from continuing operations	1,849	1,532	1,513
Income from discontinued operations	$ 0	$ 0	$ 124
Basic earnings per share attributable to Johnson Controls
Continuing operations (in dollars per share)	$ 2.70	$ 2.20	$ 2.11
Discontinued operations (in dollars per share)	0	0	0.17
Net income (in dollars per share)	2.70	2.20	2.28
Diluted earnings per share attributable to Johnson Controls
Continuing operations (in dollars per share)	2.69	2.19	2.10
Discontinued operations (in dollars per share)	0	0	0.17
Net income (in dollars per share)	$ 2.69	$ 2.19	$ 2.27
Products and systems
Net sales
Net sales	$ 20,251	$ 19,274	$ 17,202
Cost of sales
Cost of sales	14,031	13,533	11,848
Services
Net sales
Net sales	6,542	6,025	6,466
Cost of sales
Cost of sales	$ 3,791	$ 3,423	$ 3,761

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 2,033	$ 1,723	$ 1,870
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(84)	(603)	376
Realized and unrealized gains (losses) on derivatives	25	7	(18)
Pension and postretirement plans	(1)	(3)	4
Other comprehensive income (loss)	(60)	(599)	362
Total comprehensive income	1,973	1,124	2,232
Comprehensive income attributable to noncontrolling interests:
Net income	184	191	233
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(15)	(123)	19
Realized and unrealized gains on derivatives	(1)	1	1
Other comprehensive income (loss)	(16)	(122)	20
Comprehensive income attributable to noncontrolling interests	168	69	253
Comprehensive income attributable to Johnson Controls	$ 1,805	$ 1,055	$ 1,979

Consolidated Statements of Fina

Consolidated Statements of Financial Position - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022
Assets
Cash and cash equivalents	$ 835	$ 2,031
Accounts receivable, less allowance for expected credit losses of $90 and $66, respectively	6,006	5,727
Inventories	2,776	2,665
Other current assets	1,120	1,262
Current assets	10,737	11,685
Property, plant and equipment - net	3,136	3,131
Goodwill	17,936	17,350
Other intangible assets - net	4,888	5,155
Investments in partially-owned affiliates	1,056	963
Other noncurrent assets	4,489	3,874
Total assets	42,242	42,158
Liabilities and Equity
Short-term debt	385	669
Current portion of long-term debt	645	865
Accounts payable	4,268	4,368
Accrued compensation and benefits	958	1,003
Deferred revenue	1,996	1,804
Other current liabilities	2,832	2,530
Current liabilities	11,084	11,239
Long-term debt	7,818	7,426
Pension and postretirement benefit obligations	278	358
Other noncurrent liabilities	5,368	5,733
Noncurrent liabilities	13,464	13,517
Commitments and contingencies (Note 21)
Ordinary shares (par value $0.01; 2.0 billion shares authorized; shares issued: 2023 - 709,968,796; 2022 - 717,726,243)	7	7
Ordinary A shares (par value €1.00; 40,000 shares authorized, none outstanding as of September 30, 2023 and 2022)	0	0
Preferred shares (par value $0.01; 200,000,000 shares authorized, none outstanding as of September 30, 2023 and 2022)	0	0
Ordinary shares held in treasury, at cost (shares held: 2023 - 29,596,724; 2022 - 29,029,475)	(1,240)	(1,203)
Capital in excess of par value	17,349	17,224
Retained earnings	1,384	1,151
Accumulated other comprehensive loss	(955)	(911)
Shareholders’ equity attributable to Johnson Controls	16,545	16,268
Noncontrolling interests	1,149	1,134
Total equity	17,694	17,402
Total liabilities and equity	$ 42,242	$ 42,158

Consolidated Statements of Fi_2

Consolidated Statements of Financial Position (Parenthetical) $ in Millions	Sep. 30, 2023 USD ($) $ / shares shares	Sep. 30, 2023 € / shares	Sep. 30, 2022 USD ($) $ / shares shares	Sep. 30, 2022 € / shares
Allowance for expected credit losses \| $	$ 90		$ 66
Ordinary shares, par value (in dollars per share) \| $ / shares	$ 0.01		$ 0.01
Ordinary shares authorized (in shares)	2,000,000,000		2,000,000,000
Ordinary shares issued (in shares)	709,968,796		717,726,243
Preferred shares, par or stated value per share (in dollars per share) \| $ / shares	$ 0.01		$ 0.01
Preferred shares authorized (in shares)	200,000,000		200,000,000
Preferred shares issued (in shares)	0		0
Ordinary shares held in treasury (in shares)	29,596,724		29,029,475
Common Class A
Ordinary shares, par value (in dollars per share) \| € / shares		€ 1		€ 1
Ordinary shares authorized (in shares)	40,000		40,000
Ordinary shares issued (in shares)	0		0

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Operating Activities of Continuing Operations
Net income attributable to Johnson Controls	$ 1,849	$ 1,532	$ 1,513
Income from continuing operations attributable to noncontrolling interests	184	191	233
Income from continuing operations	2,033	1,723	1,746
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	848	830	845
Pension and postretirement benefit expense (income)	61	(216)	(551)
Pension and postretirement contributions	(57)	(96)	(68)
Equity in earnings of partially-owned affiliates, net of dividends received	(98)	30	(117)
Deferred income taxes	(676)	(141)	36
Non-cash restructuring and impairment charges	827	555	98
Equity-based compensation expense	111	102	76
Other - net	(123)	(58)	(85)
Changes in assets and liabilities, excluding acquisitions and divestitures:
Accounts receivable	(168)	(427)	(143)
Inventories	(81)	(773)	(219)
Other assets	(216)	(362)	(164)
Restructuring reserves	59	(7)	(44)
Accounts payable and accrued liabilities	(222)	1,270	813
Accrued income taxes	(77)	(440)	328
Cash provided by operating activities from continuing operations	2,221	1,990	2,551
Investing Activities of Continuing Operations
Capital expenditures	(539)	(592)	(552)
Sale of property, plant and equipment	32	127	124
Acquisition of businesses, net of cash acquired	(726)	(269)	(725)
Other - net	49	41	63
Cash used by investing activities from continuing operations	(1,184)	(693)	(1,090)
Financing Activities of Continuing Operations
Net proceeds (payments) from borrowings with maturities less than three months	(51)	379	(18)
Proceeds from debt	1,173	1,771	734
Repayments of debt	(1,555)	(184)	(744)
Stock repurchases and retirements	(625)	(1,441)	(1,307)
Payment of cash dividends	(980)	(916)	(762)
Proceeds from the exercise of stock options	42	17	178
Dividends paid to noncontrolling interests	(149)	(121)	(142)
Employee equity-based compensation withholding taxes	(37)	(51)	(33)
Other - net	8	30	(37)
Cash used by financing activities from continuing operations	(2,174)	(516)	(2,131)
Discontinued Operation, Alternative Cash Flow Information [Abstract]
Discontinued Operations - Cash used by operating activities	0	(4)	(64)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(5)	(53)	116
Increase (decrease) in cash, cash equivalents and restricted cash	(1,142)	724	(618)
Cash, cash equivalents and restricted cash at beginning of period	2,066	1,342	1,960
Cash, cash equivalents and restricted cash at end of period	924	2,066	1,342
Less: Restricted cash	89	35	6
Cash and cash equivalents at end of period	$ 835	$ 2,031	$ 1,336

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) $ in Millions	Total	Shareholders' Equity Attributable to Johnson Controls	Ordinary Shares	Ordinary Shares Held in Treasury, at Cost	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Shareholders' Equity Attributable to Noncontrolling Interests
Balances at beginning of period at Sep. 30, 2020		$ 17,447	$ 8	$ (1,119)	$ 16,865	$ 2,469	$ (776)	$ 1,086
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchases and retirements of ordinary shares			(1)			(1,306)
Employee equity-based compensation withholding taxes				(33)
Change in noncontrolling interest share					(8)			(6)
Share-based compensation expense	$ 76
Other, including options exercised					183	(4)
Net income attributable to Johnson Controls	1,870					1,637
Cash dividends declared						(771)
Other comprehensive income (loss)	2,232						342	253
Dividends attributable to noncontrolling interests								(142)
Balances at end of period at Sep. 30, 2021	18,753	17,562	$ 7	(1,152)	17,116	2,025	(434)	1,191
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash Dividends Declared per Ordinary Share (in dollars per share)			$ 1.07
Repurchases and retirements of ordinary shares			$ 0			(1,441)
Employee equity-based compensation withholding taxes				(51)
Change in noncontrolling interest share					0			5
Share-based compensation expense	88
Other, including options exercised					20	0
Net income attributable to Johnson Controls	1,723					1,532
Cash dividends declared						(965)
Other comprehensive income (loss)	1,124						(477)	69
Dividends attributable to noncontrolling interests								(131)
Balances at end of period at Sep. 30, 2022	17,402	16,268	$ 7	(1,203)	17,224	1,151	(911)	1,134
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash Dividends Declared per Ordinary Share (in dollars per share)			$ 1.39
Repurchases and retirements of ordinary shares			$ 0			(625)
Employee equity-based compensation withholding taxes				(37)
Change in noncontrolling interest share					0			(1)
Share-based compensation expense	85
Other, including options exercised					40	0
Net income attributable to Johnson Controls	2,033					1,849
Cash dividends declared						(991)
Other comprehensive income (loss)	1,973						(44)	168
Dividends attributable to noncontrolling interests								(152)
Balances at end of period at Sep. 30, 2023	$ 17,694	$ 16,545	$ 7	$ (1,240)	$ 17,349	$ 1,384	$ (955)	$ 1,149
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash Dividends Declared per Ordinary Share (in dollars per share)			$ 1.45

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
Summary of Significant Accounting Policies	Sep. 30, 2023
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES The consolidated financial statements include the consolidated accounts of Johnson Controls International plc, a public limited company organized under the laws of Ireland, and its subsidiaries (Johnson Controls International plc and all its subsidiaries, hereinafter collectively referred to as the "Company," "Johnson Controls" or "JCI plc"). The Company's fiscal year ends on September 30. Unless otherwise stated, references to years in this report relate to fiscal years rather than calendar years. Nature of Operations Johnson Controls International plc, headquartered in Cork, Ireland, is a global leader in smart, healthy and sustainable buildings, serving a wide range of customers in more than 150 countries. The Company’s products, services, systems and solutions advance the safety, comfort and intelligence of spaces to serve people, places and the planet. The Company is committed to helping its customers win and creating greater value for all of its stakeholders through its strategic focus on buildings. The Company is a global leader in engineering, manufacturing, commissioning and retrofitting building products and systems, including residential and commercial heating, ventilating, air-conditioning ("HVAC") equipment, industrial refrigeration systems, controls, security systems, fire-detection systems and fire-suppression solutions. The Company further serves customers by providing technical services, including maintenance, management and repair of equipment (in the HVAC, industrial refrigeration, controls, security and fire-protection space), energy-management consulting and data-driven “smart building” services and solutions powered by its OpenBlue software platform and capabilities. The Company partners with customers by leveraging its broad product portfolio and digital capabilities powered by OpenBlue, together with its direct channel service and solutions capabilities, to deliver outcome-based solutions across the lifecycle of a building that address customers’ needs to improve energy efficiency, enhance security, create healthy environments and reduce greenhouse gas emissions. Principles of Consolidation The consolidated financial statements include the consolidated accounts of Johnson Controls International plc and its subsidiaries that are consolidated in conformity with accounting principles generally accepted in the United States of America ("U.S. GAAP"). All significant intercompany transactions have been eliminated. The results of companies acquired or disposed of during the year are included in the consolidated financial statements from the effective date of acquisition or up to the date of disposal. Investments in partially-owned affiliates are accounted for by the equity method when the Company exercises significant influence, which typically occurs when its ownership interest exceeds 20%, and the Company does not have a controlling interest. The Company consolidates variable interest entities ("VIE") when it has the power to direct the significant activities of the entity and the obligation to absorb losses or receive benefits from the entity that may be significant. The Company did not have any material consolidated or nonconsolidated VIEs in its continuing operations for the presented reporting periods. Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Fair Value of Financial Instruments ASC 820, "Fair Value Measurement," defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. ASC 820 also establishes a three-level fair value hierarchy that prioritizes information used in developing assumptions when pricing an asset or liability as follows: Level 1: Observable inputs such as quoted prices in active markets for identical assets or liabilities; Level 2: Quoted prices in active markets for similar assets or liabilities, quoted prices for identical or similar assets or liabilities in markets that are not active, or inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and Level 3: Unobservable inputs where there is little or no market data, which requires the reporting entity to develop its own assumptions. ASC 820 requires the use of observable market data, when available, in making fair value measurements. When inputs used to measure fair value fall within different levels of the hierarchy, the level within which the fair value measurement is categorized is based on the lowest level input that is significant to the fair value measurement. Acquisitions The purchase price of acquired businesses is allocated to the related identifiable assets and liabilities based on estimated fair values. The excess of the purchase price over the amount allocated to the assets and liabilities, if any, is recorded as goodwill. In addition, any contingent consideration is recorded at the estimated fair value as of the date of the acquisition and is recorded as part of the purchase price. This estimate is updated in future periods and any changes in the estimate, which are not considered an adjustment to the purchase price, are recorded in our consolidated statements of operations. Payments for contingent earn-out liabilities that are less than or equal to estimates on the acquisition date are reflected as financing cash outflows. Amounts paid in excess of the estimated contingent earn-out liabilities on the acquisition date are reflected as operating cash outflows. All available information is used to estimate fair values. External valuation specialists are typically engaged to assist in the fair value determination of identifiable intangible assets and any other significant assets or liabilities. The preliminary purchase price allocation is adjusted, as necessary, up to one year after the acquisition closing date as more information is obtained regarding assets acquired and liabilities assumed based on facts and circumstances that existed as of the acquisition date. The purchase price allocation methodology contains uncertainties because it requires the Company to make assumptions and to apply judgment to estimate the fair value of acquired assets and assumed liabilities. The fair value of assets and liabilities is estimated based upon the carrying value of the acquired assets and assumed liabilities and widely accepted valuation techniques, including discounted cash flows. Unanticipated events or circumstances may occur which could affect the accuracy of fair value estimates, including assumptions regarding industry economic factors and business strategies. Other estimates used in determining fair value include, but are not limited to, future cash flows or income related to intangibles, market rate assumptions and discount rates. Fair value estimates are based upon assumptions believed to be reasonable, but that are inherently uncertain, and therefore, may not be realized. Accordingly, there can be no assurance that the estimates, assumptions, and values reflected in the valuations will be realized, and actual results could differ materially. Assets and Liabilities Held for Sale Assets and liabilities (disposal groups) to be sold are classified as held for sale in the period in which all of the following criteria are met: • Management, having the authority to approve the action, commits to a plan to sell the disposal group; • The disposal group is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such disposal groups; • An active program to locate a buyer and other actions required to complete the plan to sell the disposal group have been initiated; • Sale of the disposal group is probable and transfer of the disposal group is expected to qualify for recognition as a completed sale within one year, except if events or circumstances beyond the Company's control extend the period of time required to sell the disposal group beyond one year; • The disposal group is being actively marketed for sale at a price that is reasonable in relation to its current fair value; and • Actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn. The Company initially measures a disposal group that is classified as held for sale at the lower of its carrying value or fair value less any costs to sell in accordance with ASC 360-10-15, "Impairment or Disposal of Long-Lived Assets." The carrying amount of any assets, including goodwill, that are part of the disposal group, but not in the scope of ASC 360-10, are tested for impairment under the relevant guidance prior to measuring the disposal group at fair value, less cost to sell. Any loss resulting from this measurement is recognized in the period in which the held for sale criteria are met. Conversely, gains are not recognized on the sale of a disposal group until the date of sale. The Company assesses the fair value of a disposal group, less any costs to sell, each reporting period it remains classified as held for sale and reports any subsequent changes as an adjustment to the carrying value of the disposal group, as long as the new carrying value does not exceed the carrying value of the disposal group at the time it was initially classified as held for sale. Upon determining that a disposal group meets the criteria to be classified as held for sale, the Company reports the assets and liabilities of the disposal group, if material, in the line items assets held for sale and liabilities held for sale in the consolidated statements of financial position. Cash and Cash Equivalents Cash equivalents include all highly liquid investments with an original maturity of three months or less when purchased. Restricted Cash Restricted cash relates to amounts restricted for payment of asbestos liabilities and certain litigation and environmental matters and is recorded within other current assets in the consolidated statements of financial position. Receivables Receivables consist of billed receivables which are currently due from customers and unbilled receivables where the Company has satisfied its performance obligations, but has not yet issued the invoice to the customer. Incentives are periodically offered to customers, including early payment discounts and extended payment terms of certain receivables. The Company extends credit to customers in the normal course of business and maintains an allowance for expected credit losses resulting from the inability or unwillingness of customers to make required payments. The allowance for expected credit losses is based on historical experience, existing economic conditions, reasonable and supportable forecasts, and any specific customer collection issues the Company has identified. The Company evaluates the reasonableness of the allowance for expected credit losses on a quarterly basis. The Company enters into various factoring agreements to sell certain accounts receivable to third-party financial institutions. The Company collects the majority of the factored receivables on behalf of the financial institutions, but maintains no other continuing involvement with the factored receivables. Sales of accounts receivable are reflected as a reduction of accounts receivable in the consolidated statements of financial position and the proceeds are included in cash flows from operating activities in the consolidated statements of cash flows. Inventories Inventories are stated at the lower of cost or net realizable value using the first-in, first-out ("FIFO") method. Finished goods and work-in-process inventories include material, labor and manufacturing overhead costs. Property, Plant and Equipment Property, plant and equipment are recorded at cost. Depreciation is provided over the estimated useful lives of the respective assets using the straight-line method for financial reporting purposes and accelerated methods for income tax purposes. Estimated useful lives generally range from 3 to 40 years for buildings and improvements, up to 15 years for subscriber systems, and from 3 to 15 years for machinery and equipment. Interest on borrowings is capitalized during the active construction period of major capital projects, added to the cost of the underlying assets and amortized over the useful lives of the assets. Goodwill and Indefinite-Lived Intangible Assets Goodwill reflects the cost of an acquisition in excess of the fair values assigned to identifiable net assets acquired. Goodwill is reviewed for impairment during the fourth fiscal quarter (as of July 31) or more frequently if events or changes in circumstances indicate the asset might be impaired. The Company performs impairment reviews for its reporting units, which have been determined to be the Company’s reportable segments or one level below the reportable segments in certain instances, using a fair value method based on management’s judgments and assumptions or third party valuations. The fair value of a reporting unit refers to the price that would be received to sell the unit as a whole in an orderly transaction between market participants at the measurement date. In estimating the fair value, the Company uses the multiples of earnings approach based on the average of published multiples of earnings of comparable entities with similar operations and economic characteristics and applies the multiples to the Company's average of historical and future financial results for each reporting unit. In certain instances, the Company uses discounted cash flow analyses or estimated sales price to further support the fair value estimates. The inputs utilized in the analyses are classified as Level 3 inputs within the fair value hierarchy as defined in ASC 820, "Fair Value Measurement." The estimated fair value is then compared to the carrying amount of the reporting unit, including recorded goodwill. The Company is subject to financial statement risk to the extent that the carrying amount exceeds the estimated fair value. Indefinite-lived intangible assets are also subject to at least annual impairment testing in the fourth fiscal quarter or as events occur or circumstances change that indicate the assets may be impaired. Indefinite-lived intangible assets primarily consist of trademarks and trade names and are tested for impairment using a relief-from-royalty method. The Company considers the implications of both external (e.g., market growth, competition and local economic conditions) and internal (e.g., product sales and expected product growth) factors and their potential impact on cash flows related to the intangible asset in both the near- and long-term. The Company also considers the profitability of the business, among other factors, to determine the royalty rate for use in the impairment assessment. While the Company believes that the estimates and assumptions underlying the valuation methodologies are reasonable, different estimates and assumptions could result in different outcomes. Leases Lessee arrangements The Company leases certain administrative, production and other facilities, fleet vehicles, information technology equipment and other equipment under arrangements that are accounted for as operating leases. The Company determines whether an arrangement contains a lease at contract inception based on whether the arrangement involves the use of a physically distinct identified asset and whether the Company has the right to obtain substantially all of the economic benefits from the use of the asset throughout the period as well as the right to direct the use of the asset. Right-of-use assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent its obligation to make lease payments arising from the lease. Right-of-use assets and the corresponding lease liabilities are recognized at commencement date based on the present value of lease payments for all leases with terms longer than twelve months. The majority of the Company's leases do not provide an implicit interest rate. To determine the present value of lease payments, the Company uses its incremental borrowing rate based on information available on the lease commencement date or the implicit rate if it is readily determinable. The Company determines its incremental borrowing rate based on a comparable market yield curve consistent with its credit rating, term of the lease and relative economic environment. The Company has elected to combine lease and nonlease components for its leases. Most leases contain options to renew or terminate the lease. Right-of-use assets and lease liabilities reflect only the options which the Company is reasonably certain to exercise. The Company has certain real estate leases that contain variable lease payments which are based on changes in the Consumer Price Index (CPI). Additionally, the Company's leases generally require it to pay for fuel, maintenance, repair, insurance and taxes. These payments are not included in the right-of-use asset or lease liability and are expensed as incurred. Lease expense is recognized on a straight-line basis over the lease term. Lessor arrangements The Company has monitoring services and maintenance agreements within its security business that include subscriber system assets for which the Company retains ownership. These agreements contain both lease and nonlease components. The Company has elected to combine lease and nonlease components for these arrangements where the timing and pattern of transfer of the lease and nonlease components are the same and the lease component would be classified as an operating lease if accounted for separately. The Company has concluded that in these arrangements the nonlease components are the predominant characteristic, and as a result, the combined component is accounted for under the revenue guidance. Impairment of Long-Lived Assets Long-lived assets, including right-of-use assets under operating leases, other tangible assets and intangible assets with definite lives, are reviewed for impairment whenever events or changes in circumstances indicate that the asset’s carrying amount may not be recoverable. The Company conducts its long-lived asset impairment analyses in accordance with ASC 360-10-15, "Impairment or Disposal of Long-Lived Assets," ASC 350-30, "General Intangibles Other than Goodwill" and ASC 985-20, "Costs of Software to be Sold, Leased, or Marketed." Assets and liabilities are grouped at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities and evaluates the asset group against the sum of the undiscounted future cash flows. If the undiscounted cash flows do not indicate the carrying amount of the asset group is recoverable, an impairment charge is measured as the amount by which the carrying amount of the asset group exceeds its fair value based on discounted cash flow analysis or appraisals. Intangible assets acquired in a business combination that are used in research and development activities are considered indefinite-lived until the completion or abandonment of the associated research and development efforts. During the period that those assets are considered indefinite lived, they are not amortized but are tested for impairment annually and more frequently if events or changes in circumstances indicate that it is more likely than not that the asset is impaired. If the carrying amount of an intangible asset exceeds its fair value, the Company recognizes an impairment loss in an amount equal to that excess. Unamortized capitalized costs of a computer software product are compared to the net realizable value of the product. The amount by which the unamortized capitalized costs of a computer software product exceed the net realizable value of that asset is written off. Revenue Recognition Revenue from certain long-term contracts to design, manufacture and install building products and systems as well as unscheduled repair or replacement services is recognized on an over time basis, with progress towards completion measured using a cost-to-cost input method based on the relationship between actual costs incurred and total estimated costs at completion. The cost-to-cost input method is used as it best depicts the transfer of control to the customer that occurs as the Company incurs costs. Changes to the original estimates may be required during the life of the contract and such estimates are reviewed monthly. If contract modifications result in additional goods or services that are distinct from those transferred before the modification, they are accounted for prospectively as if the Company entered into a new contract. If the goods or services in the modification are not distinct from those in the original contract, sales and gross profit are adjusted using the cumulative catch-up method for revisions in estimated total contract costs and contract values. Estimated losses are recorded when identified. The Company does not adjust the promised amount of consideration for the effects of a significant financing component because at contract inception it expects to receive the payment within twelve months of transfer of goods or services. The Company enters into extended warranties and long-term service and maintenance agreements with certain customers. For these arrangements, revenue is recognized over time on a straight-line basis over the respective contract term. The Company also sells certain HVAC and refrigeration products and services in bundled arrangements with multiple performance obligations, such as equipment, commissioning, service labor and extended warranties. Approximately four to twelve months separate the timing of the first deliverable until the last piece of equipment is delivered. There may also be extended warranty arrangements with durations of one to five years commencing upon the end of the standard warranty period. In addition, the Company sells security monitoring systems that may have multiple performance obligations, including equipment, installation, monitoring services and maintenance agreements. Revenue associated with the sale of equipment and related installations are recognized over time on a cost-to-cost input method, while the revenue for monitoring and maintenance services are recognized over time as services are rendered. The transaction price is allocated to each performance obligation based on the relative standalone selling price method. In order to estimate relative standalone selling price, market data and transfer price studies are utilized. If the standalone selling price is not directly observable, the Company estimates the standalone selling price using an adjusted market assessment approach or expected cost plus margin approach. If the Company retains ownership of the subscriber system asset, fees for monitoring and maintenance services are recognized over the contract term on a straight-line basis. Non-refundable fees received in connection with the initiation of a monitoring contract, along with associated direct and incremental selling costs, are deferred and amortized over the estimated life of the contract. In all other cases, the Company recognizes revenue at the point in time when control over the goods or services transfers to the customer. The Company assesses variable consideration that may affect the total transaction price, including discounts, rebates, refunds, credits or other similar sources of variable consideration, when determining the transaction price of each contract. The Company includes variable consideration in the estimated transaction price when it is probable that significant reversal of revenue recognized would not occur when the uncertainty associated with variable consideration is subsequently resolved. These estimates are based on the amount of consideration that the Company expects to be entitled to. Shipping and handling costs billed to customers are included in sales and the related costs are included in cost of sales when control transfers to the customer. The Company presents amounts collected from customers for sales and other taxes net of the related amounts remitted. Subscriber System Assets, Dealer Intangibles and Related Deferred Revenue Accounts The Company considers assets related to the acquisition of new customers in its electronic security business in three asset categories: • Internally generated residential subscriber systems outside of North America; • Internally generated commercial subscriber systems; and • Customer accounts acquired through the ADT dealer program, primarily outside of North America (referred to as dealer intangibles). Subscriber system assets include installed property, plant and equipment for which the Company retains ownership and deferred costs directly related to the customer acquisition and system installation. Subscriber system assets represent capitalized equipment (e.g. security control panels, touch pad, motion detectors, window sensors, and other equipment) and installation costs associated with electronic security monitoring arrangements under which the Company retains ownership of the security system assets in a customer's place of business or residence. Installation costs represent costs incurred to prepare the asset for its intended use. The Company pays property taxes on the subscriber system assets and may retrieve such assets when the agreement is terminated. These assets embody a probable future economic benefit as they generate future monitoring revenue for the Company. Costs related to the subscriber system equipment and installation are categorized as property, plant and equipment rather than deferred costs. Deferred costs associated with subscriber system assets represent direct and incremental selling expenses (such as commissions) related to acquiring the customer. Commissions related to up-front consideration paid by customers in connection with the establishment of the monitoring arrangement are determined based on a percentage of the up-front fees and do not exceed deferred revenue. Such deferred costs are recorded as other current and noncurrent assets within the consolidated statements of financial position. Subscriber system assets and any deferred revenue resulting from the customer acquisition are accounted for over the expected life of the subscriber. In certain geographical areas which have a large number of customers that behave in a similar manner over time, the Company accounts for subscriber system assets and related deferred revenue using pools, with separate pools for the components of subscriber system assets and any related deferred revenue based on the same month and year of acquisition. Pooled subscriber system assets and related deferred revenue are depreciated using a straight-line method with lives up to 12 years and considering customer attrition. Non-pooled subscriber systems (primarily in Europe, Latin America and Asia) and related deferred revenue are depreciated using a straight-line method with a 15-year life, with remaining balances written off upon customer termination. Certain contracts and related customer relationships result from purchasing residential security monitoring contracts from an external network of independent dealers who operate under the ADT dealer program, primarily outside of North America. Acquired contracts and related customer relationships are recorded at their contractually determined purchase price. During the first 6 months (12 months in certain circumstances) after the purchase of the customer contract, any cancellation of monitoring service, including those that result from customer payment delinquencies, results in a chargeback by the Company to the dealer for the full amount of the contract purchase price. The Company records the amount charged back to the dealer as a reduction of the previously recorded intangible asset. Intangible assets arising from the ADT dealer program described above are amortized in pools determined by the same month and year of contract acquisition on a straight-line basis over the period of the customer relationship. The estimated useful life of dealer intangibles ranges from 12 to 15 years. Research and Development Costs Expenditures for research activities relating to product development and improvement are charged against income as incurred and included within selling, general and administrative expenses in the consolidated statements of income. Such expenditures for the years ended September 30, 2023, 2022 and 2021 were $320 million, $295 million and $275 million, respectively. Stock-Based Compensation Restricted (Non-vested) Stock /Units Restricted stock and restricted stock units are typically settled in shares for employees in the U.S. and in cash for employees not in the U.S. Restricted awards typically vest over a period of three years from the grant date. The Company's Compensation and Talent Development Committee may approve different vesting terms on specific grants. The fair value of each share-settled restricted award is based on the closing market value of the Company’s ordinary shares on the date of grant. The fair value of each cash-settled restricted award is recalculated at the end of each reporting period based on the closing market value of the Company's ordinary shares at the end of the reporting period, and the liability and expense are adjusted based on the new fair value. Performance Share Awards Performance-based share unit ("PSU") awards are generally contingent on the achievement of predetermined performance goals over a performance period of one Upon completion of the performance period, earned PSUs are typically settled with shares of the Company's ordinary shares for employees in the U.S. and in cash for employees not in the U.S. The fair value of the portion of the PSU which is linked to the achievement of performance goals is based on the closing market value of the Company's ordinary shares on the date of grant. Share-based compensation expense for these PSUs is recognized over the performance period based on the probability of achieving the performance targets. The fair value of the portion of the PSU that is indexed to total shareholder return is estimated on the date of grant using a Monte Carlo simulation that uses the following assumptions: • The risk-free interest rate for periods during the contractual life of the PSU is based on the U.S. Treasury yield curve in effect at the time of grant. • The expected volatility is based on the historical volatility of the Company's stock over the most recent three-year period as of the grant date. Share-based compensation expense for PSUs which are indexed to total shareholder return is not adjusted for changes in performance subsequent to the grant date because the likelihood of achieving the market condition is incorporated in the grant date fair value of the award. Stock Options Stock options are granted with an exercise price equal to the market price of the Company’s stock at the date of grant. Stock option awards typically vest between two The fair value of each option is estimated on the date of grant using a Black-Scholes option valuation model that uses the following assumptions: • The expected life of options represents the period of time that options granted are expected to be outstanding. • The risk-free interest rate for periods during the contractual life of the option is based on the U.S. Treasury yield curve in effect at the time of grant. • For grants in fiscal 2023, expected volatility is based on the historical volatility of the Company's stock corresponding to the expected life as of the grant date. For grants in fiscal 2022 and fiscal 2021, expected volatility is based on the historical volatility of the Company's stock since October 2016 and certain peer companies' stock prior to October 2016 over the most recent period corresponding to the expected life as of the grant date. • The expected dividend yield is based on the expected annual dividend as a percentage of the market value of the Company’s ordinary shares as of the grant date. The Company

Acquisitions and Divestitures

Acquisitions and Divestitures	12 Months Ended
Acquisitions and Divestitures	Sep. 30, 2023
Business Combination and Asset Acquisition [Abstract]
ACQUISITIONS AND DIVESTITURES	ACQUISITIONS AND DIVESTITURES FM:Systems Acquisition In July 2023, the Company completed its acquisition of FM:Systems, a leading digital workplace management and Internet of Things ("IoT") solutions provider for facilities and real estate professionals, for $540 million, net of cash acquired, which was comprised of an upfront cash payment of $465 million, net of cash acquired, and the estimated fair value at the acquisition date of contingent earn-out liabilities of $75 million. The contingent earn-out liabilities are primarily based upon the achievement of certain defined operating results in the two years following the acquisition, with a maximum payout of $155 million. In connection with the acquisition, the Company recorded goodwill of $399 million in the Building Solutions North America segment. Goodwill is attributable primarily to expected synergies, expanded market opportunities and other benefits that the Company believes will result from integrating the products and capabilities of FM:Systems into its operations. The goodwill created in the acquisition is not deductible for tax purposes. The preliminary fair values of the assets acquired and liabilities assumed related to FM:Systems are as follows (in millions): Cash and cash equivalents $ 8 Accounts receivable 15 All other current assets 9 Goodwill 399 Intangible assets 194 All other noncurrent assets 7 Total assets acquired 632 Deferred revenue 24 All other current liabilities 49 Other noncurrent liabilities 11 Total liabilities acquired 84 Net assets acquired $ 548 The purchase price allocation to identifiable intangible assets acquired is as follows: Fair Value Weighted Average Life (in years) Customer relationships $ 117 10 Technology 74 10 Trademarks and other definite-lived intangibles 3 4 Total identifiable intangible assets $ 194 Silent-Aire Acquisition In May 2021, the Company completed its acquisition of Silent-Aire, a global leader in hyperscale data center cooling and modular critical infrastructure solutions, for approximately $755 million, net of cash acquired, which was comprised of an upfront net cash payment of approximately $661 million, the estimated fair value of contingent earn-out liabilities at the acquisition date of approximately $86 million and a working capital adjustment of $8 million. The contingent earn-out liabilities are based upon the achievement of certain defined operating results in each of the three years following the acquisition, with a maximum payout of approximately $250 million. The Company recorded reductions in the fair value of the contingent earn-out liability of $30 million and $43 million during the years ended September 30, 2023 and 2022, respectively. No earn-out payments were made for the twelve-month earn-out periods ended April 30, 2023 and 2022, as the performance measures for the periods were not achieved. Other Acquisitions During fiscal 2023, the Company acquired several other businesses for a combined purchase price, net of cash acquired, of $306 million, of which $260 million was paid as of September 30, 2023. Intangible assets associated with these acquisitions totaled $116 million and primarily relate to customer relationships and technology. The Company recorded goodwill associated with these acquisitions of $119 million in the Global Products segment, $55 million in the Building Solutions Asia Pacific segment and $13 million in the Building Solutions EMEA/LA segment. During fiscal 2022, the Company acquired several businesses for a combined purchase price, net of cash acquired, of $323 million, of which $269 million was paid as of September 30, 2022. Intangible assets associated with these acquisitions totaled $123 million and primarily relate to customer relationships and technology. The Company recorded goodwill associated with these acquisitions of $194 million, of which $68 million was assigned to the Building Solutions EMEA/LA segment, $45 million was assigned to the Global Products segment, $44 million was assigned to the Building Solutions Asia Pacific segment and $36 million was assigned to the Building Solutions North America segment. Other acquisitions were not material individually or in the aggregate in fiscal 2023 and 2022. Divestitures Refer to Note 3, "Assets and Liabilities Held for Sale & Discontinued Operations," of the notes to the consolidated financial statements for disclosure of a business in the Building Solutions Asia Pacific segment that was sold on August 1, 2023. No divestitures were material individually or in the aggregate in fiscal 2023 and 2022.

Assets and Liabilities Held For

Assets and Liabilities Held For Sale and Discontinued Operations	12 Months Ended
	Sep. 30, 2023
Discontinued Operations and Disposal Groups [Abstract]
Assets and Liabilities Held For Sale and Discontinued Operations	ASSETS AND LIABILITIES HELD FOR SALE AND DISCONTINUED OPERATIONS Assets and Liabilities Held for Sale During fiscal 2023, the Company concluded that its Global Retail business, which is included in the Building Solutions North America, Building Solutions Asia Pacific and Building Solutions EMEA/LA segments and was previously presented as held for sale in the consolidated statements of financial position as of September 30, 2022, no longer met the criteria to be classified as held for sale. The Company discontinued sales efforts based on market factors and other considerations and determined that it was no longer probable that the business would be sold within one year. As a result, the assets and liabilities are now reported as held and used on the consolidated statements of financial position as of both September 30, 2023 and September 30, 2022. The net assets were reclassified to held and used at the lower of fair value or adjusted carrying value in the current period. Due to impairment charges recorded in prior periods, there was no impact to the consolidated statements of income as a result of the reclassification. A business in the Building Solutions Asia Pacific segment, which was previously classified as held for sale, was sold on August 1, 2023. The net assets were not significant to the consolidated statements of financial position. During fiscal 2022, the Company determined that certain assets of the Building Solutions Asia Pacific segment no longer met the criteria to be classified as held for sale because the Company could no longer assert that the sale of the assets was probable within one year due to declines in the Chinese real estate market after the COVID-19 lockdowns. As a result, the Company reclassified the held for sale assets to held and used as of September 30, 2022. As a result, the Company reclassified the held for sale assets to held and used as of September 30, 2022. Upon reclassification, an impairment of $45 million was recorded within restructuring and impairment costs in the consolidated statements of income to adjust the asset to the lower of its carrying value adjusted for depreciation and the fair value of the asset as of September 30, 2022. The following table summarizes impairment charges for the various assets held for sale (in millions): Year Ended September 30, 2023 2022 Global Retail business $ 438 $ 359 Business in the Building Solutions Asia Pacific segment 60 60 Certain assets in the Building Solution Asia Pacific segment — 45 The impairment charges were recorded within restructuring and impairment costs in the consolidated statements of income and include costs to write down the disposal groups to their estimated fair values, less costs to sell; impairment of goodwill; and the write-off of internal-use software projects that were no longer probable of being completed. Refer to Note 8, "Goodwill and Other Intangible Assets," of the notes to the consolidated financial statements for further information regarding the goodwill impairment charges. The businesses did not meet the criteria to be classified as discontinued operations as neither planned divestiture represented a strategic shift that would have a major effect on the Company's operations and financial results. Discontinued Operations

Revenue Recognition

Revenue Recognition	12 Months Ended
Revenue Recognition	Sep. 30, 2023
Revenue from Contract with Customer [Abstract]
REVENUE RECOGNITION	REVENUE RECOGNITION Disaggregated Revenue The following table presents the Company's revenues disaggregated by segment and by products and systems versus services revenue (in millions): Year Ended September 30, 2023 2022 Products & Systems Services Total Products & Systems Services Total Building Solutions North America $ 6,368 $ 3,962 $ 10,330 $ 5,708 $ 3,659 $ 9,367 Building Solutions EMEA/LA 2,275 1,821 4,096 2,188 1,657 3,845 Building Solutions Asia Pacific 1,987 759 2,746 2,005 709 2,714 Global Products 9,621 — 9,621 9,373 — 9,373 Total $ 20,251 $ 6,542 $ 26,793 $ 19,274 $ 6,025 $ 25,299 The following table presents further disaggregation of Global Products revenues by product type (in millions): Year Ended September 30, 2023 2022 HVAC $ 6,820 $ 6,756 Fire & Security 2,446 2,367 Industrial Refrigeration 355 250 Total $ 9,621 $ 9,373 Contract Balances Contract assets represent the Company’s right to consideration for performance obligations that have been satisfied but not billed and consist of unbilled receivables and costs in excess of billings. Contract liabilities are customer payments received before performance obligations are satisfied. Contract balances are classified as assets or liabilities on a contract-by-contract basis at the end of each reporting period. The following table presents the location and amount of contract balances in the Company's consolidated statements of financial position (in millions): September 30, Location of contract balances 2023 2022 Contract assets - current Accounts receivable - net $ 2,370 $ 2,067 Contract assets - noncurrent Other noncurrent assets 12 79 Contract liabilities - current Deferred revenue 1,996 1,804 Contract liabilities - noncurrent Other noncurrent liabilities 297 282 The Company recognized revenue that was included in the beginning of period contract liability balance of approximately $1.6 billion and $1.5 billion for the years ended September 30, 2023 and 2022, respectively. Performance Obligations A performance obligation is a distinct good, service, or bundle of goods and services promised in a contract. A contract’s transaction price is allocated to each distinct performance obligation and recognized as revenue when, or as, the performance obligation is satisfied. When contracts with customers require significant and complex integration, contain goods or services which are highly interdependent or interrelated, or are goods or services which significantly modify or customize other promises in the contracts and, therefore, are not distinct, then the entire contract is accounted for as a single performance obligation. For any contracts with multiple performance obligations, the contract’s transaction price is allocated to each performance obligation based on the estimated relative standalone selling price of each distinct good or service in the contract. For product sales, each product sold to a customer typically represents a distinct performance obligation. Performance obligations are satisfied as of a point in time or over time. The timing of satisfying the performance obligation is typically indicated by the terms of the contract. As of September 30, 2023, the aggregate amount of the transaction price allocated to remaining performance obligations was approximately $19.6 billion, of which approximately 65% is expected to be recognized as revenue over the next two years. The remaining performance obligations expected to be recognized in revenue beyond two years primarily relate to large, multi-purpose contracts to construct hospitals, schools and other governmental buildings, which include services to be performed over the building's lifetime, with average initial contract terms of 25 to 35 years. Future contract modifications could affect both the timing and the amount of the remaining performance obligations. The Company excludes the value of remaining performance obligations for contracts with an original expected duration of one year or less. Costs to Obtain or Fulfill a Contract The Company recognizes the incremental costs incurred to obtain or fulfill a contract with a customer as an asset when the costs are recoverable. These costs consist primarily of sales commissions and bid/proposal costs. Costs to obtain or fulfill a contract are capitalized when incurred and amortized to expense over the period of contract performance. The following table presents the location and amount of costs to obtain or fulfill a contract recorded in the Company's consolidated statements of financial position (in millions): September 30, 2023 2022 Other current assets $ 156 $ 139 Other noncurrent assets 224 174 Total $ 380 $ 313

Accounts Receivable

Accounts Receivable	12 Months Ended
Accounts Receivable	Sep. 30, 2023
Receivables [Abstract]
ACCOUNTS RECEIVABLE	ACCOUNTS RECEIVABLEThe Company sold $1,962 million and $1,115 million of accounts receivable under factoring agreements during the years ended September 30, 2023, and 2022, respectively. The cost of factoring such receivables was not material. Previously sold receivables still outstanding were $681 million and $476 million as of September 30, 2023 and September 30, 2022, respectively.

Inventories

Inventories	12 Months Ended
Inventories	Sep. 30, 2023
Inventory Disclosure [Abstract]
INVENTORIES	INVENTORIES Inventories consisted of the following (in millions): September 30, 2023 2022 Raw materials and supplies $ 1,203 $ 1,040 Work-in-process 226 203 Finished goods 1,347 1,422 Inventories $ 2,776 $ 2,665

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
Property, Plant and Equipment	Sep. 30, 2023
Property, Plant and Equipment [Abstract]
PROPERTY, PLANT AND EQUIPMENT	PROPERTY, PLANT AND EQUIPMENT Property, plant and equipment consisted of the following (in millions): September 30, 2023 2022 Buildings and improvements $ 1,337 $ 1,320 Subscriber systems 823 762 Machinery and equipment 4,227 3,745 Construction in progress 540 514 Land 194 197 Total property, plant and equipment 7,121 6,538 Less: Accumulated depreciation (3,985) (3,407) Property, plant and equipment - net $ 3,136 $ 3,131 During the fourth quarter of fiscal 2023, the Company determined that a triggering event had occurred in the asset group comprising the security subscriber business of Argentina, primarily as a result of the significant devaluation of the Argentine peso that occurred during the quarter and the resulting impact on operating results and cash flows. The Company conducted the two-step impairment test required in accordance with ASC 360, "Property, Plant & Equipment" and determined that the carrying amount of the asset group exceeded its fair value. A non-cash impairment charge to the subscriber system assets of $78 million was recorded and is included in restructuring and impairment costs in the consolidated statements of income. The Company used a discounted cash flow model to estimate the fair value of the asset group. The primary assumptions and inputs used in the model included management's internal projections of future cash flows, the weighted-average cost of capital and the long-term growth rate. The fair value measurement is classified as Level 3 within the fair value hierarchy as defined in ASC 820, "Fair Value Measurement" due to the unobservable inputs used.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
Goodwill and Other Intangible Assets	Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND OTHER INTANGIBLE ASSETS	GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill The changes in the carrying amount of goodwill in each of the Company’s reportable segments were as follows (in millions): Year Ended September 30, 2023 Building Solutions North America Building Solutions EMEA/LA Building Solutions Asia Pacific Global Products Total Goodwill $ 9,630 $ 1,794 $ 1,116 $ 5,591 18,131 Accumulated impairment loss (659) (47) — (75) (781) Balance at beginning of period 8,971 1,747 1,116 5,516 17,350 Acquisitions (1) 399 13 55 119 586 Impairments — — — (184) (184) Foreign currency translation and other 11 125 8 40 184 Balance at end of period $ 9,381 $ 1,885 $ 1,179 $ 5,491 $ 17,936 Year Ended September 30, 2022 Building Solutions North America Building Solutions EMEA/LA Building Solutions Asia Pacific Global Products Total Goodwill $ 9,639 $ 2,088 $ 1,237 $ 5,842 18,806 Accumulated impairment loss (424) (47) — — (471) Balance at beginning of period 9,215 2,041 1,237 5,842 18,335 Acquisitions (1) 37 78 44 60 219 Divestitures — (5) (14) — (19) Impairments (235) — — (75) (310) Foreign currency translation and other (46) (367) (151) (311) (875) Balance at end of period $ 8,971 $ 1,747 $ 1,116 $ 5,516 $ 17,350 (1) Includes measurement period adjustments In the second quarter of fiscal 2023, management completed an updated comprehensive review of the Silent-Aire reporting unit, which is included in the Global Products segment. Because actual results were lower than planned and the nearer term forecast was revised to reflect lower margins and earnings, the Company determined a triggering event had occurred and a quantitative test of goodwill for possible impairment was necessary. As a result of the goodwill impairment test, the Company recorded a non-cash impairment charge of $184 million within restructuring and impairment costs in the consolidated statements of income in fiscal 2023, which was determined by comparing the carrying amount of the reporting unit to its fair value. The Silent-Aire reporting unit has no remaining goodwill balance as of September 30, 2023. Management completed its fiscal 2023 annual impairment test as of July 31. The fair value of all reporting units substantially exceeded their carrying values, with the exception of one reporting unit with $455 million of goodwill whose fair value in excess of its carrying value was approximately 10%. For this reporting unit, a 1% increase in the discount rate, or a 1.5% decrease in the revenue growth rates, would cause the fair value to be less than the carrying value. While no impairment was recorded, it is possible that future changes in circumstances could result in a non-cash impairment charge. During its fiscal 2022 annual impairment test, the Company determined that goodwill in the Silent-Are reporting unit was impaired and recorded a non-cash impairment charge of $75 million within restructuring and impairment costs in the consolidated statements of income. The impairment charge was determined by comparing the carrying amount of the reporting unit to its fair value. The Company used a discounted cash flow model to estimate the fair value of the Silent-Aire reporting unit in both fiscal 2023 and 2022. The primary assumptions and inputs used in the model included management's internal projections of future cash flows, the weighted-average cost of capital and the long-term growth rate. The fair value measurement is classified as Level 3 within the fair value hierarchy as defined in ASC 820, "Fair Value Measurement" due to the unobservable inputs used. In fiscal 2022, the Company concluded it had a triggering event requiring assessment of goodwill impairment for its North America Retail reporting unit in conjunction with classifying its Global Retail business as held for sale. As a result, the Company recorded a non-cash impairment charge of $235 million within restructuring and impairment costs in the consolidated statements of income in fiscal 2022. The North America Retail reporting unit had no remaining goodwill balance as of September 30, 2023 or 2022. The Company used the market approach to estimate the fair value of the reporting unit based on the relative estimated sales proceeds for the planned disposal of the Global Retail business attributable to the North America Retail reporting unit. The inputs utilized in the analysis are classified as Level 3 inputs within the fair value hierarchy as defined in ASC 820, "Fair Value Measurement." Refer to Note 3, "Assets and Liabilities Held for Sale & Discontinued Operations," of the notes to the consolidated financial statements for further disclosure. There were no other triggering events requiring that an impairment assessment be conducted in fiscal 2023, 2022 or 2021. However, it is possible that future changes in circumstances would require the Company to record additional non-cash impairment charges. Other Intangible Assets The Company’s other intangible assets, primarily from business acquisitions, consisted of (in millions): September 30, 2023 2022 Gross Accumulated Net Gross Accumulated Net Definite-lived intangible assets Technology $ 1,575 $ (806) $ 769 $ 1,481 $ (728) $ 753 Customer relationships 3,047 (1,496) 1,551 3,011 (1,340) 1,671 Miscellaneous 889 (435) 454 949 (425) 524 5,511 (2,737) 2,774 5,441 (2,493) 2,948 Indefinite-lived intangible assets Trademarks/tradenames 2,114 — 2,114 2,207 — 2,207 Total intangible assets $ 7,625 $ (2,737) $ 4,888 $ 7,648 $ (2,493) $ 5,155 During the fourth quarter of fiscal 2023, the Company impaired $18 million of Miscellaneous intangible assets in the Global Products segment and $10 million of a trademark in the Building Solutions Asia Pacific segment. These non-cash charges were recorded within restructuring and impairment costs There was no impairment of other indefinite-lived intangible assets in any of these years, other than as disclosed above. For all other remaining indefinite lived intangible assets, the Company estimated fair values were greater than the carrying values, with the exception of three other registered trademarks in which the estimated fair values were consistent with their carrying values which totaled $412 million. Amortization of other intangible assets included within continuing operations for the years ended September 30, 2023, 2022 and 2021 was $439 million, $427 million and $435 million, respectively. The following table summarizes the expected amortization of definite-lived intangible assets, excluding the impact of future acquisitions, by year (in millions): 2024 $ 508 2025 479 2026 410 2027 365 2028 252

Leases

Leases	12 Months Ended
Leases	Sep. 30, 2023
Leases [Abstract]
LEASES	LEASES The following table presents the Company’s lease costs (in millions): Year Ended September 30, 2023 2022 2021 Operating lease cost $ 384 $ 352 $ 384 Variable lease cost 165 165 130 Total lease costs $ 549 $ 517 $ 514 The following table presents supplemental consolidated statement of financial position information (in millions): September 30, Location of lease balances 2023 2022 Operating lease right-of-use assets Other noncurrent assets $ 1,389 $ 1,271 Operating lease liabilities - current Other current liabilities 318 280 Operating lease liabilities - noncurrent Other noncurrent liabilities 1,086 987 Weighted-average remaining lease term 7 years 7 years Weighted-average discount rate 3.5 % 2.1 % The following table presents supplemental cash flow information related to operating leases (in millions): Year Ended September 30, 2023 2022 2021 Cash paid for amounts included in the measurement of lease liability: Operating cash outflows from operating leases $ 373 $ 367 $ 398 Noncash operating lease activity: Right-of-use assets obtained in exchange for operating lease liabilities 427 369 515 The following table presents future minimum rental payments for operating lease liabilities as of September 30, 2023 (in millions): 2024 $ 358 2025 300 2026 227 2027 171 2028 123 After 2028 404 Total operating lease payments 1,583 Less: Interest (179) Present value of lease payments $ 1,404

Debt and Financing Arrangements

Debt and Financing Arrangements	12 Months Ended
Debt and Financing Arrangements	Sep. 30, 2023
Debt Disclosure [Abstract]
DEBT AND FINANCING ARRANGEMENTS	DEBT AND FINANCING ARRANGEMENTS Short-Term Debt Short-term debt consisted of the following (in millions): September 30, 2023 2022 Bank borrowings $ 26 $ 10 Commercial paper 200 172 Term loans 159 487 $ 385 $ 669 Weighted average interest rate on short-term debt outstanding 5.1 % 0.5 % Long-Term Debt Long-term debt consisted of the following (in millions; due dates by fiscal year): Carrying Value Issuer Interest Rate Due Date Par Value September 30, 2023 September 30, 2022 JCI plc 4.625% 2023 $ 25 $ — $ 25 TIFSA 1 4.625% 2023 $ 7 — 7 JCI plc 1.00% 2023 € 846 — 830 JCI plc 3.625% 2024 $ 453 453 453 JCI Inc. 3.625% 2024 $ 31 31 31 JCI plc EURIBOR plus 0.70% 2024 € 150 159 — JCI plc 1.375% 2025 € 423 450 419 TIFSA 1 1.375% 2025 € 54 57 53 JCI plc 3.90% 2026 $ 487 499 505 TIFSA 1 3.90% 2026 $ 51 50 51 JCI plc TORF plus 0.40% 2027 ¥ 30,000 202 208 JCI plc and TFSCA 2 0.375% 2027 € 500 528 488 JCI plc and TFSCA 2 3.00% 2028 € 600 634 586 JCI plc and TFSCA 2 1.75% 2030 $ 625 624 623 JCI plc and TFSCA 2 2.00% 2031 $ 500 497 496 JCI plc and TFSCA 2 1.00% 2032 € 500 529 489 JCI plc and TFSCA 2 4.90% 2032 $ 400 394 394 JCI plc and TFSCA 2 4.25% 2035 € 800 839 — JCI plc 6.00% 2036 $ 342 339 339 JCI Inc. 6.00% 2036 $ 8 8 8 JCI plc 5.70% 2041 $ 190 189 189 JCI Inc. 5.70% 2041 $ 30 30 30 JCI plc 5.25% 2042 $ 155 155 155 JCI Inc. 5.25% 2042 $ 6 6 6 JCI plc 4.625% 2044 $ 444 442 441 JCI Inc. 4.625% 2044 $ 6 6 6 JCI plc 5.125% 2045 $ 477 431 557 TIFSA 1 5.125% 2045 $ 23 23 23 JCI plc 6.95% 2046 $ 32 32 32 JCI Inc. 6.95% 2046 $ 4 4 4 JCI plc 4.50% 2047 $ 500 496 496 JCI plc 4.95% 2064 $ 341 340 340 JCI Inc. 4.95% 2064 $ 15 15 15 Other 36 25 Gross long-term debt 8,498 8,324 Less: current portion 645 865 Less: debt issuance costs 35 33 Long-term debt $ 7,818 $ 7,426 1 TIFSA = Tyco International Finance S.A. 2 TFSCA = Tyco Fire & Security Finance S.C.A. The following table presents maturities of long-term debt as of September 30, 2023 (in millions): 2024 $ 646 2025 508 2026 550 2027 731 2028 634 After 2028 5,429 Total $ 8,498 Other As of September 30, 2023, the Company had a syndicated $2.5 billion committed revolving credit facility, which was scheduled to expire in December 2024, and a syndicated $500 million committed revolving credit facility, which expired in November 2023. Both credit facilities were renewed on December 11, 2023. The $2.5 billion facility is now scheduled to expire in December 2028 and the $500 million facility is now scheduled to expire in December 2024. There were no draws on the facilities as of September 30, 2023. As of September 30, 2023, the Company was in compliance with all financial covenants set forth in its credit agreements and the indentures governing its outstanding notes, and expects to remain in compliance for the foreseeable future.

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	12 Months Ended
Derivative Instruments and Hedging Activities	Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES	DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES Cash Flow Hedges The Company has global operations and participates in foreign exchange markets to minimize its risk of loss from fluctuations in foreign currency exchange rates. The Company selectively hedges anticipated transactions that are subject to foreign exchange rate risk primarily using foreign currency exchange forward contracts. The Company hedges 70% to 90% of the notional amount of each of its known foreign exchange transactional exposures. The Company selectively hedges anticipated transactions that are subject to commodity price risk, primarily using commodity hedge contracts, to minimize overall price risk associated with its purchases of copper and aluminum in cases where commodity price risk cannot be naturally offset or hedged through supply base fixed price contracts. Commodity risks are systematically managed pursuant to policy guidelines. The maturities of the commodity hedge contracts coincide with the expected purchase of the commodities. As cash flow hedges under ASC 815, "Derivatives and Hedging," the hedge gains or losses due to changes in fair value are initially recorded as a component of AOCI and are subsequently reclassified into earnings when the hedged transactions occur and affect earnings. These contracts were highly effective in hedging the variability in future cash flows attributable to changes in currency exchange rates during the years ended September 30, 2023 and 2022. The Company had the following outstanding contracts to hedge forecasted commodity purchases (in metric tons): Volume Outstanding as of September 30, Commodity 2023 2022 Copper 2,812 3,629 Aluminum 5,976 6,758 The Company enters into forward-starting interest rate swaps in conjunction with anticipated note issuances. The following table summarizes forward-starting interest rate swaps and the related anticipated note issuances (in millions): Year Ended September 30, 2023 2022 US dollar denominated Forward-starting interest swaps $ 600 $ 300 Anticipated note issuance 800 400 Euro denominated Forward-starting interest swap € 400 € 200 Anticipated note issuance 800 600 Forward-starting interest swaps are terminated when the anticipated notes are issued. As of September 30, 2023, $600 million of forward-starting interest swaps were outstanding. Accumulated amounts recorded in AOCI as of the date of the note issuance are amortized to interest expense over the life of the related note to reflect the difference between the swap's reference rate and the fixed rate of the note. Net Investment Hedges The Company enters into cross-currency interest rate swaps and foreign currency denominated debt obligations to selectively hedge portions of its net investment in non-U.S. subsidiaries. The currency effects of the cross-currency interest rate swaps and debt obligations are reflected in the AOCI account within shareholders’equity attributable to Johnson Controls ordinary shareholders where they offset gains and losses recorded on the Company’s net investments globally. The following table summarizes net investment hedges (in billions): September 30, 2023 2022 Euro-denominated bonds designated as net investment hedges in Europe € 2.9 € 2.9 Yen-denominated debt designated as a net investment hedge in Japan ¥ 30 ¥ 30 US dollar vs. Yen cross-currency interest rate swap designated as a net investment hedge in Japan ¥ 14 ¥ — Derivatives Not Designated as Hedging Instruments The Company holds certain foreign currency forward contracts not designated as hedging instruments under ASC 815 to hedge foreign currency exposure resulting from monetary assets and liabilities denominated in nonfunctional currencies. The changes in fair value of these foreign currency exchange derivatives are recorded in the consolidated statements of income where they offset foreign currency transactional gains and losses on the nonfunctional currency denominated assets and liabilities being hedged. Fair Value of Derivative Instruments The following table presents the location and fair values of derivative instruments and hedging activities included in the Company’s consolidated statements of financial position (in millions): Designated Not Designated September 30, 2023 September 30, 2022 September 30, 2023 September 30, 2022 Other current assets Foreign currency exchange derivatives $ 16 $ 30 $ 13 $ 24 Interest rate swaps 22 — — — Other noncurrent assets Cross-currency interest rate swap 5 — — — Total assets $ 43 $ 30 $ 13 $ 24 Other current liabilities Foreign currency exchange derivatives $ 20 $ 24 $ 5 $ 27 Commodity derivatives 2 10 — — Long-term debt Foreign currency denominated debt 3,253 3,077 — — Total liabilities $ 3,275 $ 3,111 $ 5 $ 27 Counterparty Credit Risk The use of derivative financial instruments exposes the Company to counterparty credit risk. The Company has established policies and procedures to limit the potential for counterparty credit risk, including establishing limits for credit exposure and continually assessing the creditworthiness of counterparties. As a matter of practice, the Company deals with major banks worldwide having strong investment grade long-term credit ratings. To further reduce the risk of loss, the Company generally enters into International Swaps and Derivatives Association ("ISDA") master netting agreements with substantially all of its counterparties. The Company enters into ISDA master netting agreements with counterparties that permit the net settlement of amounts owed under the derivative contracts. The master netting agreements generally provide for net settlement of all outstanding contracts with a counterparty in the case of an event of default or a termination event. The Company has not elected to offset the fair value positions of the derivative contracts recorded in the consolidated statements of financial position. The Company's derivative contracts do not contain any credit risk related contingent features and do not require collateral or other security to be furnished by the Company or the counterparties. The Company's exposure to credit risk associated with its derivative instruments is measured on an individual counterparty basis, as well as by groups of counterparties that share similar attributes. The Company does not anticipate any non-performance by any of its counterparties, and the concentration of risk with financial institutions does not present significant credit risk to the Company. The gross and net amounts of derivative assets liabilities Fair Value of Assets Fair Value of Liabilities September 30, 2023 September 30, 2022 September 30, 2023 September 30, 2022 Gross amount recognized $ 56 $ 54 $ 3,280 $ 3,138 Gross amount eligible for offsetting (19) (42) (19) (42) Net amount $ 37 $ 12 $ 3,261 $ 3,096 Derivatives Impact on the Statements of Income and Statements of Comprehensive Income The following table presents the pre-tax gains (losses) recorded in other comprehensive income (loss) related to cash flow hedges (in millions): Derivatives in Cash Flow Hedging Relationships Year Ended September 30, 2023 2022 2021 Foreign currency exchange derivatives $ (13) $ 26 $ 15 Commodity derivatives 1 (21) 4 Interest rate swaps 27 16 (21) Total $ 15 $ 21 $ (2) The following table presents the location and amount of the pre-tax gains (losses) on cash flow hedges reclassified from AOCI into the Company’s consolidated statements of income (in millions): Derivatives in Cash Flow Location of Gain (Loss) Year Ended September 30, 2023 2022 2021 Foreign currency exchange derivatives Cost of sales $ (4) $ 25 $ 11 Commodity derivatives Cost of sales (8) (7) 3 Interest rate swaps Net financing charges — (2) — Total $ (12) $ 16 $ 14 The following table presents the location and amount of pre-tax gains (losses) on derivatives not designated as hedging instruments recognized in the Company’s consolidated statements of income (in millions): Derivatives Not Designated as Hedging Instruments Location of Gain (Loss) Year Ended September 30, 2023 2022 2021 Foreign currency exchange derivatives Cost of sales $ (16) $ 10 $ (6) Foreign currency exchange derivatives Net financing charges (103) 85 174 Foreign currency exchange derivatives Selling, general and administrative — — (2) Foreign currency exchange derivatives Income tax provision — — (1) Interest rate swaps Net financing charges 1 — — Equity swap Selling, general and administrative — (5) 28 Total $ (118) $ 90 $ 193 Pre-tax gains (losses) on net investment hedges recorded as foreign currency translation adjustment ("CTA") within other comprehensive income (loss) were $(223) million, $470 million and $42 million for the years ended September 30, 2023, 2022 and 2021, respectively. No gains or losses were reclassified from CTA into income for the years ended September 30, 2023, 2022 and 2021.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
Fair Value Measurements	Sep. 30, 2023
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS The following tables present the Company’s fair value hierarchy for those assets and liabilities measured at fair value (in millions): Fair Value Measurements Using: Total as of September 30, 2023 Quoted Prices Significant Significant Other current assets Foreign currency exchange derivatives $ 29 $ — $ 29 $ — Interest rate swaps 22 — 22 — Other noncurrent assets Cross-currency interest rate swap 5 — 5 — Deferred compensation plan assets 45 45 — — Exchange traded funds (fixed income) 1 76 76 — — Exchange traded funds (equity) 1 155 155 — — Total assets $ 332 $ 276 $ 56 $ — Other current liabilities Foreign currency exchange derivatives $ 25 $ — $ 25 $ — Commodity derivatives 2 — 2 — Contingent earn-out liabilities 48 — — 48 Other noncurrent liabilities Contingent earn-out liabilities 76 — — 76 Total liabilities $ 151 $ — $ 27 $ 124 Fair Value Measurements Using: Total as of September 30, 2022 Quoted Prices Significant Significant Other current assets Foreign currency exchange derivatives $ 54 $ — $ 54 $ — Exchange traded funds (fixed income) 1 22 22 — — Other noncurrent assets Deferred compensation plan assets 46 46 — — Exchange traded funds (fixed income) 1 86 86 — — Exchange traded funds (equity) 1 131 131 — — Total assets $ 339 $ 285 $ 54 $ — Other current liabilities Foreign currency exchange derivatives $ 51 $ — $ 51 $ — Commodity derivatives 10 — 10 — Contingent earn-out liabilities 30 — — 30 Other noncurrent liabilities Contingent earn-out liabilities 30 — — 30 Total liabilities $ 121 $ — $ 61 $ 60 1 Classified as restricted investments for payment of asbestos liabilities. Refer to Note 21, "Commitments and Contingencies" of the notes to consolidated financial statements for further details. The following table summarizes the changes in contingent earn-out liabilities, which are valued using significant unobservable inputs (Level 3) (in millions): Balance at September 30, 2022 $ 60 Acquisitions 112 Payments (10) Reduction for change in estimates (39) Currency translation 1 Balance at September 30, 2023 $ 124 Valuation Methods Commodity derivatives : The commodity derivatives are valued under a market approach using publicized prices, where available, or dealer quotes. Contingent earn-out liabilities : The contingent earn-out liabilities are generally established using a Monte Carlo simulation based on the forecasted operating results and the earn-out formulas specified in the purchase agreements. Cross-currency interest rate swaps: The fair value of cross-currency interest rate swaps represents the difference between the swap's reference rate and exchange rate and the interest and exchange rates for a similar instrument as of the reporting period. Cross-currency interest rate swaps are valued under a market approach using publicized prices. Deferred compensation plan assets : Assets held in the deferred compensation plans will be used to pay benefits under certain of the Company's non-qualified deferred compensation plans. The investments primarily consist of mutual funds which are publicly traded on stock exchanges and are valued using a market approach based on the quoted market prices. Unrealized gains (losses) on the deferred compensation plan assets are recognized in the consolidated statements of income where they offset unrealized gains and losses on the related deferred compensation plan liability. Foreign currency exchange derivatives : The foreign currency exchange derivatives are valued under a market approach using publicized spot and forward prices. Interest rate swaps: The fair value of interest rate swaps represents the difference between the swap's reference rate and the interest rate for a similar instrument as of the reporting period. Interest rate swaps are valued under a market approach using publicized prices. Investments in exchange traded funds : Investments in exchange traded funds are valued using a market approach based on quoted market prices, where available, or broker/dealer quotes of identical or comparable instruments. Refer to Note 21, "Commitments and Contingencies," of the notes to consolidated financial statements for further information. The following table presents the portion of unrealized gains (losses) recognized in the consolidated statements of income that relate to equity securities still held at September 30, 2023 and 2022 (in millions): Year Ended 2023 2022 Deferred compensation plan assets $ 5 $ (10) Investments in exchange traded funds 24 (55) All of the gains and losses on investments in exchange traded funds related to restricted investments. The fair values of cash and cash equivalents, accounts receivable, short-term debt and accounts payable approximate their carrying values. The fair value of long-term debt at September 30, 2023 and 2022 was as follows (in billions): Year Ended 2023 2022 Public debt $ 7.1 $ 7.1 Other long-term debt 0.4 0.2 Total fair value of long-term debt $ 7.5 $ 7.3

Stock-based Compensation

Stock-based Compensation	12 Months Ended
Stock-based Compensation	Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]
STOCK-BASED COMPENSATION	STOCK-BASED COMPENSATION The Johnson Controls International plc 2021 Equity and Incentive Plan authorizes stock options, stock appreciation rights, restricted (non-vested) stock/units, performance shares, performance units and other stock-based awards. The Compensation and Talent Development Committee of the Company's Board of Directors determines the types of awards to be granted to individual participants and the terms and conditions of the awards. Annual awards are typically granted in the first quarter of the fiscal year. As of September 30, 2023, there were 55 million shares of the Company's common stock reserved and 41 million shares available for issuance under the 2021 Equity and Incentive Plan. The following table summarizes stock-based compensation related charges and benefits (in millions): Year Ended September 30, 2023 2022 2021 Compensation expense $ 101 $ 104 $ 97 Income tax benefit resulting from share-based compensation arrangements 25 26 24 Tax impact from exercise and vesting of equity settled awards 7 12 12 Compensation expense is recorded in selling, general and administrative expenses. The Company does not settle stock options granted under share-based payment arrangements in cash. Restricted (Non-vested) Stock / Units A summary of non-vested restricted stock awards at September 30, 2023, and changes for the year then ended, is presented below: Weighted Shares/Units Non-vested, September 30, 2022 $ 58.78 2,949,194 Granted 65.72 2,010,495 Vested 53.55 (1,487,685) Forfeited 64.14 (664,891) Non-vested, September 30, 2023 $ 64.90 2,807,113 At September 30, 2023, the Company had approximately $113 million of total unrecognized compensation cost related to non-vested restricted stock arrangements granted which is expected to be recognized over a weighted-average period of 1.9 years. Performance Share Awards (PSU's) The following table summarizes the assumptions used in determining the fair value of stock options granted: Year Ended September 30, 2023 2022 2021 Risk-free interest rate 4.04% 0.99% 0.20% Expected volatility of the Company’s stock 33.50% 30.00% 30.90% A summary of the status of the Company’s non-vested PSU's at September 30, 2023, and changes for the year then ended, is presented below: Weighted Shares/Units Non-vested, September 30, 2022 $ 60.30 1,143,071 Granted 79.45 344,029 Vested 43.19 (361,117) Forfeited 71.18 (258,459) Non-vested, September 30, 2023 $ 71.77 867,524 At September 30, 2023, the Company had approximately $32 million of total unrecognized compensation cost related to non-vested performance-based share unit awards which is expected to be recognized over a weighted-average period of 1.9 years. Stock Options The following table summarizes the assumptions used in determining the fair value of stock options granted: Year Ended September 30, 2023 2022 2021 Expected life of option (years) 5.8 6.0 6.5 Risk-free interest rate 3.59% 1.35% 0.60% Expected volatility of the Company’s stock 29.40% 27.80% 27.60% Expected dividend yield on the Company’s stock 2.10% 1.71% 2.28% A summary of stock option activity at September 30, 2023, and changes for the year then ended, is presented below: Weighted Shares Weighted Aggregate Outstanding, September 30, 2022 $ 42.46 5,683,847 Granted 66.77 570,140 Exercised 38.17 (1,068,612) Forfeited or expired 59.31 (265,459) Outstanding, September 30, 2023 $ 45.44 4,919,916 5.75 $ 56 Exercisable, September 30, 2023 $ 39.11 3,762,092 3.83 $ 53 The following table summarizes additional stock option information: Year Ended September 30, 2023 2022 2021 Weighted-average grant-date fair value of options granted $ 18.21 $ 18.59 $ 9.36 Intrinsic value of options exercised (in millions) 27 19 94 At September 30, 2023, the Company had approximately $10 million of total unrecognized compensation cost related to non-vested stock options which is expected to be recognized over a weighted-average period of 1.6 years.

Earnings Per Share

Earnings Per Share	12 Months Ended
Earnings Per Share	Sep. 30, 2023
Earnings Per Share [Abstract]
EARNINGS PER SHARE	EARNINGS PER SHARE The following table reconciles the numerators and denominators used to calculate basic and diluted earnings per share (in millions): Year Ended September 30, 2023 2022 2021 Income Available to Ordinary Shareholders Income from continuing operations $ 1,849 $ 1,532 $ 1,513 Income from discontinued operations — — 124 Basic and diluted income available to shareholders $ 1,849 $ 1,532 $ 1,637 Weighted Average Shares Outstanding Basic weighted average shares outstanding 684.3 696.1 716.6 Effect of dilutive securities: Stock options, unvested restricted stock and unvested 3.1 3.5 4.5 Diluted weighted average shares outstanding 687.4 699.6 721.1 Antidilutive Securities Stock options and unvested restricted stock 0.2 0.4 —

Equity

Equity	12 Months Ended
Equity	Sep. 30, 2023
Stockholders' Equity Note [Abstract]
EQUITY	EQUITY Dividends The authority to declare and pay dividends is vested in the Board of Directors. The timing, declaration and payment of future dividends to holders of the Company's ordinary shares is determined by the Company's Board of Directors and depends upon many factors, including the Company's financial condition and results of operations, the capital requirements of the Company's businesses, industry practice and any other relevant factors. Under Irish law, dividends may only be paid (and share repurchases and redemptions must generally be funded) out of "distributable reserves." The creation of distributable reserves was accomplished by way of a capital reduction, which the Irish High Court approved on December 18, 2014 and as acquired in conjunction with the Merger. Share Repurchase Program As of September 30, 2023, approximately $3.0 billion remained available under the share repurchase program which was approved by the Company's Board of Directors in March 2021. The share repurchase program does not have an expiration date and may be amended or terminated by the Board of Directors at any time without prior notice. Accumulated Other Comprehensive Income The following table includes changes in AOCI attributable to Johnson Controls (in millions, net of tax): Year Ended September 30, 2023 2022 2021 Foreign currency translation adjustments Balance at beginning of period $ (901) $ (421) $ (778) Aggregate adjustment for the period (69) (480) 357 Balance at end of period (970) (901) (421) Realized and unrealized gains (losses) on derivatives Balance at beginning of period (11) (17) 2 Current period changes in fair value 19 20 (3) Reclassification to income (1) 11 (16) (14) Net tax impact (4) 2 (2) Balance at end of period 15 (11) (17) Pension and postretirement plans Balance at beginning of period 1 4 — Reclassification to income (1) (3) (3) Other changes — — 8 Net tax impact — — (1) Balance at end of period — 1 4 Accumulated other comprehensive loss, end of period $ (955) $ (911) $ (434) (1)

Retirement Plans

Retirement Plans	12 Months Ended
Retirement Plans	Sep. 30, 2023
Retirement Benefits [Abstract]
RETIREMENT PLANS	RETIREMENT PLANS Pension Benefits The Company has non-contributory defined benefit pension plans covering certain U.S. and non-U.S. employees. The benefits provided are primarily based on years of service and average compensation or a monthly retirement benefit amount. Certain of the Company’s U.S. pension plans no longer allow new participants to enter the plans and no longer accrue benefits. Funding for U.S. pension plans equals or exceeds the minimum requirements of the Employee Retirement Income Security Act of 1974. Funding for non-U.S. plans observes the local legal and regulatory limits. Also, the Company makes contributions to union-trusteed pension funds for construction and service personnel. The following table includes information for pension plans with accumulated benefit obligations ("ABO") in excess of plan assets (in millions): September 30, 2023 2022 Accumulated benefit obligation $ 1,834 $ 2,004 Fair value of plan assets 1,618 1,720 The following table includes information for pension plans with projected benefit obligations ("PBO") in excess of plan assets (in millions): September 30, 2023 2022 Projected benefit obligation $ 1,846 $ 2,013 Fair value of plan assets 1,633 1,729 The Company contributed $55 million to the defined benefit plans in fiscal 2023 and expects to contribute approximately $24 million in cash in fiscal 2024. None of contributions made by the Company were voluntary. Projected benefit payments from the plans as of September 30, 2023 are estimated as follows (in millions): 2024 $ 277 2025 235 2026 235 2027 233 2028 172 2029 - 2033 1,160 Postretirement Benefits The Company provides certain health care and life insurance benefits for eligible retirees and their dependents primarily in the U.S. and Canada. Most non-U.S. employees are covered by government sponsored programs. The cost to the Company is not significant. Eligibility for coverage is based on meeting certain years of service and retirement age qualifications. These benefits may be subject to deductibles, co-payment provisions and other limitations. The Company has reserved the right to modify these benefits. The health care cost trend assumption does not have a significant effect on the amounts reported. The following table includes information for postretirement plans with accumulated postretirement benefit obligations ("APBO") in excess of plan assets (in millions): September 30, 2023 2022 Accumulated postretirement benefit obligation $ 58 $ 68 Fair value of plan assets 24 28 The Company contributed $2 million to the postretirement benefit plans in fiscal 2023 and expects to contribute approximately $2 million in cash in fiscal 2024. Projected benefit payments from the plans as of September 30, 2023 are estimated as follows (in millions): 2024 $ 10 2025 10 2026 9 2027 9 2028 7 2029 - 2033 27 Defined Contribution Plans The Company sponsors various defined contribution savings plans that allow employees to contribute a portion of their pre-tax and/or after-tax income in accordance with plan specified guidelines. Under specified conditions, the Company will contribute to certain savings plans based on predetermined percentages of compensation earned by the employee and/or will match a percentage of the employee contributions up to certain limits. Defined contribution plan contributions charged to expense amounted to $209 million, $196 million and $118 million during the years ended September 30, 2023, 2022 and 2021, respectively. The Company temporarily suspended certain contributions in fiscal 2021 in response to the COVID-19 pandemic. Multiemployer Benefit Plans The Company contributes to multiemployer benefit plans based on obligations arising from collective bargaining agreements related to certain of its hourly employees in the U.S. These plans provide retirement benefits to participants based on their service to contributing employers. The benefits are paid from assets held in trust for that purpose. The trustees typically are responsible for determining the level of benefits to be provided to participants as well as for such matters as the investment of the assets and the administration of the plans. The risks of participating in these multiemployer benefit plans are different from single-employer benefit plans in the following aspects: • Assets contributed to the multiemployer benefit plan by one employer may be used to provide benefits to employees of other participating employers. • If a participating employer stops contributing to the multiemployer benefit plan, the unfunded obligations of the plan may be borne by the remaining participating employers. • If the Company stops participating in some of its multiemployer benefit plans, it may be required to pay those plans an amount based on its allocable share of the underfunded status of the plan, referred to as a withdrawal liability. The Company participates in approximately 260 multiemployer benefit plans, none of which are individually significant to the Company. The number of employees covered by the Company’s multiemployer benefit plans has remained consistent over the past three years, and there have been no significant changes that affect the comparability of fiscal 2023, 2022 and 2021 contributions. The Company recognizes expense for the contractually-required contribution for each period. The Company contributed $67 million, $71 million and $67 million to multiemployer benefit plans during the years ended September 30, 2023, 2022 and 2021, respectively. Based on the most recent information available, the Company believes that the present value of actuarial accrued liabilities in certain of these multiemployer benefit plans may exceed the value of the assets held in trust to pay benefits. Currently, the Company is not aware of any significant multiemployer benefit plans for which it is probable or reasonably possible that the Company will be obligated to make up any shortfall in funds. Moreover, if the Company were to exit certain markets or otherwise cease making contributions to these funds, the Company could trigger a withdrawal liability. Currently, the Company is not aware of any multiemployer benefit plans for which it is probable or reasonably possible that the Company will have a significant withdrawal liability. Any accrual for a shortfall or withdrawal liability will be recorded when it is probable that a liability exists and it can be reasonably estimated. Plan Assets The Company’s investment policies employ an approach whereby a mix of equities, fixed income and alternative investments are used to maximize the long-term return of plan assets for a prudent level of risk. The investment portfolio primarily contains a diversified blend of equity and fixed income investments. Equity investments are diversified across U.S. and non-U.S. stocks, as well as growth, value and small to large capitalization. Fixed income investments include corporate and government issues, with short-, mid- and long-term maturities, with a focus on investment grade when purchased and a target duration close to that of the plan liability. Investment and market risks are measured and monitored on an ongoing basis through regular investment portfolio reviews, annual liability measurements and periodic asset/liability studies. The majority of the real estate component of the portfolio is invested in a diversified portfolio of high-quality, operating properties with cash yields greater than the targeted appreciation. Investments in other alternative asset classes, including hedge funds, diversify the expected investment returns relative to the equity and fixed income investments. As a result of the Company's diversification strategies, there are no significant concentrations of risk within the portfolio of investments. The Company’s actual asset allocations are in line with target allocations. The Company rebalances asset allocations as appropriate, in order to stay within a range of allocation for each asset category. The expected return on plan assets is based on the Company’s expectation of the long-term average rate of return of the capital markets in which the plans invest. The average market returns are adjusted, where appropriate, for active asset management returns. The expected return reflects the investment policy target asset mix and considers the historical returns earned for each asset category. The Company’s plan assets at September 30, 2023 and 2022, by asset category, are as follows (in millions): Fair Value Measurements Using: Asset Category Total as of September 30, 2023 Quoted Prices Significant Significant U.S. Pension Cash and Cash Equivalents $ 61 $ — $ 61 $ — Equity Securities Large-Cap 60 60 — — Small-Cap 65 65 — — International - Developed 108 108 — — International - Emerging 20 20 — — Fixed Income Securities Government 225 225 — — Corporate/Other 583 583 — — Alternative 211 — 211 — Total Investments in the Fair Value Hierarchy 1,333 $ 1,061 $ 272 $ — Real Estate Investments Measured at Net Asset Value (1) 295 Due to Broker (129) Total Plan Assets $ 1,499 Non-U.S. Pension Cash and Cash Equivalents $ 52 $ 52 $ — $ — Equity Securities Large-Cap 52 9 43 — International - Developed 52 12 40 — International - Emerging 2 — 2 — Fixed Income Securities Government 701 40 661 — Corporate/Other 415 271 144 — Hedge Fund 15 — 15 — Real Estate 9 9 — — Total Investments in the Fair Value Hierarchy 1,298 $ 393 $ 905 $ — Real Estate Investments Measured at Net Asset Value (1) 90 Total Plan Assets $ 1,388 Postretirement Cash and Cash Equivalents $ 8 $ 8 $ — $ — Equity Securities - Global 71 — 71 — Total Investments in the Fair Value Hierarchy 79 $ 8 $ 71 $ — Multi-Credit Strategy Investments Measured at Net Asset Value (1) 65 Total Plan Assets $ 144 Fair Value Measurements Using: Asset Category Total as of September 30, 2022 Quoted Prices Significant Significant U.S. Pension Cash and Cash Equivalents $ 40 $ — $ 40 $ — Equity Securities Large-Cap 160 160 — — Small-Cap 175 175 — — International - Developed 139 139 — — International - Emerging 39 39 — — Fixed Income Securities Government 217 216 1 — Corporate/Other 804 804 — — Total Investments in the Fair Value Hierarchy 1,574 $ 1,533 $ 41 $ — Real Estate Investments Measured at Net Asset Value (1) 322 Due to Broker (166) Total Plan Assets $ 1,730 Non-U.S. Pension Cash and Cash Equivalents $ 150 $ 150 $ — $ — Large-Cap 45 8 37 — International - Developed 43 12 31 — International - Emerging 3 — 3 — Fixed Income Securities Government 650 50 600 — Corporate/Other 418 277 141 — Hedge Fund 18 — 18 — Real Estate 9 9 — — Total Investments in the Fair Value Hierarchy 1,336 $ 506 $ 830 $ — Real Estate Investments Measured at Net Asset Value (1) 97 Total Plan Assets $ 1,433 Postretirement Cash and Cash Equivalents $ 13 $ 13 $ — $ — Equity Securities Global 66 — 66 — Total Investments in the Fair Value Hierarchy 79 13 66 — Multi-Credit Strategy Investments Measured at Net Asset Value (1) 65 Total Plan Assets $ 144 (1) The fair value of certain real estate and multi-credit strategy investments do not have a readily determinable fair value and require the fund managers to independently arrive at fair value by calculating net asset value ("NAV") per share. In order to calculate NAV per share, the fund managers value the investments using any one, or a combination of, the following methods: independent third party appraisals, discounted cash flow analysis of net cash flows projected to be generated by the investment and recent sales of comparable investments. Assumptions used to revalue the investments are updated every quarter. Due to the fact that the fund managers calculate NAV per share, the Company utilizes a practical expedient for measuring the fair value of its real estate and multi-credit strategy investments, as provided for under ASC 820, "Fair Value Measurement." In applying the practical expedient, the Company is not required to further adjust the NAV provided by the fund manager in order to determine the fair value of its investments as the NAV per share is calculated in a manner consistent with the measurement principles of ASC 946, "Financial Services - Investment Companies," and as of the Company's measurement date. The Company believes this is an appropriate methodology to obtain the fair value of these assets. For the component of the real estate portfolio under development, the investments are carried at cost until they are completed and valued by a third party appraiser. In accordance with ASU No. 2015-07, "Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent)," investments for which fair value is measured using the net asset value per share practical expedient are disclosed separate from the fair value hierarchy. The fair value amounts presented in these tables are intended to permit reconciliation of total plan assets to the amounts presented in the notes to consolidated financial statements. The following is a description of the valuation methodologies used for assets measured at fair value. Certain assets are held within commingled funds which are valued at the unitized NAV or percentage of the net asset value as determined by the manager of the fund. These values are based on the fair value of the underlying net assets owned by the fund. Cash and Cash Equivalents: The fair value of cash and cash equivalents is valued at cost. Equity Securities: The fair value of equity securities is determined by direct quoted market prices. The underlying holdings are direct quoted market prices on regulated financial exchanges. Fixed Income Securities: The fair value of fixed income securities is determined by direct or indirect quoted market prices. If indirect quoted market prices are utilized, the value of assets held in separate accounts is not published, but the investment managers report daily the underlying holdings. The underlying holdings are direct quoted market prices on regulated financial exchanges. Hedge Funds: The fair value of hedge funds is accounted for by the custodian. The custodian obtains valuations from underlying managers based on market quotes for the most liquid assets and alternative methods for assets that do not have sufficient trading activity to derive prices. The Company and custodian review the methods used by the underlying managers to value the assets. The Company believes this is an appropriate methodology to obtain the fair value of these assets. Real Estate: The fair value of real estate is determined by quoted market prices of the underlying Real Estate Investment Trusts ("REITs"), which are securities traded on an open exchange. The methods described above may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while the Company believes its valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date. Funded Status The following table contains the ABO and reconciliations of the changes in the PBO, the changes in plan assets and the funded status (in millions): Pension Benefits Postretirement U.S. Plans Non-U.S. Plans September 30, 2023 2022 2023 2022 2023 2022 Accumulated Benefit Obligation $ 1,564 $ 1,822 $ 1,424 $ 1,417 $ 76 $ 89 Change in Projected Benefit Obligation Projected benefit obligation at beginning of year $ 1,822 $ 2,629 $ 1,471 $ 2,625 $ 89 $ 123 Service cost — — 16 20 — 1 Interest cost 78 56 68 39 4 2 Plan participant contributions — — 3 2 3 3 Actuarial gain (37) (587) (62) (651) (7) (25) Benefits and settlements paid (299) (276) (126) (166) (12) (14) Other — — (3) (3) — — Currency translation adjustment — — 106 (395) — (1) Projected benefit obligation at end of year $ 1,564 $ 1,822 $ 1,473 $ 1,471 $ 77 $ 89 Change in Plan Assets Fair value of plan assets at beginning of year $ 1,730 $ 2,459 $ 1,433 $ 2,344 $ 144 $ 172 Actual return on plan assets 66 (454) (77) (459) 7 (20) Employer and employee contributions 3 1 55 94 5 6 Benefits paid (85) (85) (61) (74) (12) (14) Settlement payments (215) (191) (65) (92) — — Other — — (2) (2) — — Currency translation adjustment — — 105 (378) — — Fair value of plan assets at end of year $ 1,499 $ 1,730 $ 1,388 $ 1,433 $ 144 $ 144 Funded status $ (65) $ (92) $ (85) $ (38) $ 67 $ 55 Amounts recognized in the statement of financial position consist of: Prepaid benefit cost $ 1 $ 37 $ 97 $ 151 $ 101 $ 95 Accrued benefit liability (66) (129) (182) (189) (34) (40) Net amount recognized $ (65) $ (92) $ (85) $ (38) $ 67 $ 55 Weighted Average Assumptions (1) Discount rate (2) 5.48 % 5.08 % 4.72 % 4.36 % 5.42 % 4.92 % Rate of compensation increase N/A N/A 2.90 % 3.00 % N/A N/A Interest crediting rate N/A N/A 1.63 % 1.69 % N/A N/A (1) Plan assets and obligations are determined based on a September 30 measurement date at September 30, 2023 and 2022. (2) The Company considers the expected benefit payments on a plan-by-plan basis when setting assumed discount rates. As a result, the Company uses different discount rates for each plan depending on the plan jurisdiction, the demographics of participants and the expected timing of benefit payments. For the U.S. pension and postretirement plans, the Company uses a discount rate provided by an independent third party calculated based on an appropriate mix of high quality bonds. For the non-U.S. pension and postretirement plans, the Company consistently uses the relevant country specific benchmark indices for determining the various discount rates. The Company has elected to utilize a full yield curve approach in the estimation of service and interest components of net periodic benefit cost (credit) for pension and other postretirement for plans that utilize a yield curve approach. The full yield curve approach applies the specific spot rates along the yield curve used in the determination of the benefit obligation to the relevant projected cash flows. The fiscal 2023 and fiscal 2022 net actuarial gains related to changes in the projected benefit obligation were primarily the result of the increase in discount rates globally. Net Periodic Benefit Cost The following table contains the components of net periodic benefit costs, which are recorded in selling, general and administrative expenses Pension Benefits Postretirement Benefits U.S. Plans Non-U.S. Plans Year ended September 30, 2023 2022 2021 2023 2022 2021 2023 2022 2021 Components of Net Periodic Benefit Cost (Credit): Service cost $ — $ — $ — $ 16 $ 20 $ 27 $ — $ 1 $ 1 Interest cost 78 56 47 68 39 32 4 2 2 Expected return on plan assets (131) (150) (171) (77) (81) (112) (9) (9) (8) Net actuarial (gain) loss 28 16 (214) 86 (116) (115) (5) 4 (35) Settlement (gain) loss 1 1 — 6 5 (1) — — — Amortization of prior service cost (credit) — — — — — 1 (4) (4) (4) Other — — — — — (1) — — — Net periodic benefit cost (credit) included in continuing operations $ (24) $ (77) $ (338) $ 99 $ (133) $ (169) $ (14) $ (6) $ (44) Expense Assumptions: Discount rate 5.08 % 2.52 % 2.25 % 4.36 % 1.79 % 1.35 % 4.92 % 2.30 % 1.90 % Expected return on plan assets 8.25 % 7.00 % 6.90 % 5.02 % 3.70 % 4.90 % 6.64 % 5.29 % 5.30 % Rate of compensation increase N/A N/A N/A 3.00 % 2.85 % 2.75 % N/A N/A N/A Interest crediting rate N/A N/A N/A 1.69 % 1.44 % 1.50 % N/A N/A N/A

Restructuring and Related Costs

Restructuring and Related Costs	12 Months Ended
Restructuring and Related Costs	Sep. 30, 2023
Restructuring and Related Activities [Abstract]
RESTRUCTURING AND RELATED COSTS	RESTRUCTURING AND RELATED COSTS To better align its resources with its growth strategies and reduce the cost structure of its global operations in certain underlying markets, the Company commits to restructuring plans as necessary. Restructuring activities generally result in charges for workforce reductions, plant closures, asset impairments and other related costs which are reported as restructuring and impairment costs in the Company’s consolidated statements of income. The Company expects the restructuring actions to reduce cost of sales and SG&A due to reduced employee-related costs, depreciation and amortization expense. In the third quarter of fiscal 2023, the Company began developing a restructuring plan with certain actions focused on continued scaling of SG&A expenses to its planned growth. The scope of the plan was substantially finalized in the fourth quarter of fiscal 2023 and certain actions related to this plan were committed and executed during the fourth quarter, primarily related to workforce reductions, and were recorded to restructuring and impairment costs in the consolidated statements of income. Additional restructuring charges are expected in subsequent quarters. Restructuring charges incurred during the first and second quarters of fiscal 2023 were the result of other segment and Corporate-level restructuring plans. Refer to Note 3, "Assets and Liabilities Held for Sale & Discontinued Operations," Note 7, "Property, Plant and Equipment," and Note 8, "Goodwill and Other Intangible Assets," of the notes to the consolidated financial statements for disclosure of other impairment costs. The following table summarizes restructuring and related costs (in millions): Year Ended September 30, 2023 Building Solutions North America $ 43 Building Solutions EMEA/LA 97 Building Solutions Asia Pacific 18 Global Products 69 Corporate 49 Total $ 276 The following table summarizes changes in the restructuring reserve, which is included within other current liabilities in the consolidated statements of financial position, for new restructuring actions taken in the year ended September 30, 2023 (in millions): Employee Severance and Termination Benefits Long-Lived Asset Impairments Other Total Restructuring and related costs 204 38 34 276 Utilized—cash (111) — (19) (130) Utilized—noncash — (38) (3) (41) Balance at September 30, 2023 $ 93 $ — $ 12 $ 105

Income Taxes

Income Taxes	12 Months Ended
Income Taxes	Sep. 30, 2023
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES The more significant components of the Company’s income tax provision from continuing operations are as follows (in millions): 2023 2022 2021 Tax expense at Ireland statutory rate of 12.5% $ 214 $ 214 $ 327 U.S. state income tax, net of federal benefit 39 (23) 34 Income subject to the U.S. federal tax rate 56 (95) 3 Income subject to rates different than the statutory rate 92 125 30 Reserve and valuation allowance adjustments (559) (274) 66 Intellectual property transactions and adjustments (176) — 417 Restructuring and impairment costs 11 40 (9) Income tax provision (benefit) $ (323) $ (13) $ 868 Effective tax rate (19) % (1)% 33% For fiscal 2023, the effective tax rate for continuing operations was (19)% and was lower than the statutory tax rate primarily due to the favorable tax impacts of intellectual property tax adjustments, tax reserve adjustments as the result of tax audit resolutions and remeasurements, valuation allowance adjustments and the benefits of continuing global tax planning initiatives, partially offset by the unfavorable impact of impairment and restructuring charges. For fiscal 2022, the effective tax rate for continuing operations was (1)% and was lower than the statutory tax rate primarily due to favorable impact of tax reserve adjustments as the result of expired statute of limitations for certain tax years and the benefits of continuing global tax planning initiatives, partially offset by the unfavorable impact of impairment and restructuring charges, valuation allowance adjustments, and the establishment of a deferred tax liability on the outside basis difference of the Company's investment in certain subsidiaries as a result of the planned divestitures and tax rate differentials. For fiscal 2021, the effective tax rate for continuing operations was 33% and was higher than the statutory tax rate primarily due to the unfavorable impact of tax impacts of an intercompany transfer of certain of the Company’s intellectual property rights, valuation allowance adjustments, the income tax effects of mark-to-market adjustments and tax rate differentials, partially offset by the benefits of continuing global tax planning initiatives. Valuation Allowances The Company reviews the realizability of its deferred tax assets and related valuation allowances on a quarterly basis, or whenever events or changes in circumstances indicate that a review is required. In determining the requirement for a valuation allowance, the historical and projected financial results of the legal entity or consolidated group recording the net deferred tax asset are considered, along with any other positive or negative evidence. Since future financial results may differ from previous estimates, periodic adjustments to the Company’s valuation allowances may be necessary. In fiscal 2023, due to changes in forecasted taxable income, the Company determined that it was more likely than not that certain deferred tax assets of Canada, Mexico, and Spain would be realized. The valuation allowance adjustment resulted in a tax benefit of $121 million. In fiscal 2022, due to changes in forecasted taxable income, the Company determined that it was more likely than not that certain deferred tax assets of Japan would not be realized. The valuation allowance adjustment resulted in a tax charge of $27 million. In fiscal 2021, as a result of an intercompany transfer of certain of the Company’s intellectual property rights, the Company determined that it was more likely than not that certain deferred tax assets of Switzerland would be realized and certain deferred tax assets of Canada would not be realized. The valuation allowance adjustments resulted in a $39 million net benefit to income tax expense. Due to changes in forecasted taxable income, the Company also recorded a discrete tax charge of $105 million related to valuation allowances on certain Mexico deferred tax assets which were considered unrealizable. The following table summarizes changes in the valuation allowance (in millions): Year Ended September 30, 2023 2022 2021 Balance at beginning of period $ 5,973 $ 5,853 $ 5,518 Allowance provision for new operating and other loss carryforwards 573 325 505 Allowance benefits (168) (205) (170) Balance at end of period $ 6,378 $ 5,973 $ 5,853 Uncertain Tax Positions The Company is subject to income taxes in the U.S. and numerous non-U.S. jurisdictions. Judgment is required in determining its worldwide provision for income taxes and recording the related assets and liabilities. In the ordinary course of the Company’s business, there are many transactions and calculations where the ultimate tax determination is uncertain. The Company is regularly under audit by tax authorities. A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in millions): 2023 2022 2021 Beginning balance, October 1 $ 2,537 $ 2,726 $ 2,528 Additions for tax positions related to the current year 72 169 240 Additions for tax positions of prior years 96 31 33 Reductions for tax positions of prior years (27) (48) (6) Settlements with taxing authorities (6) (7) (24) Statute closings and audit resolutions (446) (334) (45) Ending balance, September 30 $ 2,226 $ 2,537 $ 2,726 The following table summarizes tax effected unrecognized tax benefits that, if recognized, would impact the effective tax rate and the related accrued interest, net of tax benefit (in millions): September 30, 2023 2022 2021 Tax effected unrecognized tax benefits that, if recognized, would affect the effective tax rate $ 1,581 $ 1,973 $ 2,268 Net accrued interest 335 284 252 In fiscal 2023, as the result of tax audit resolutions, statute expirations, and remeasurements of ongoing controversy matters in various jurisdictions, the Company adjusted its reserve for uncertain tax positions which resulted in a $438 million net benefit to income tax expense. In fiscal 2022, the statute of limitations for certain tax years expired, which resulted in a $301 million benefit to income tax expense. In the U.S., fiscal years 2017 through 2018 are currently under appeal by the Internal Revenue Service (“IRS”) for certain legal entities. Additionally, the Company is currently under exam in the following major non-U.S. jurisdictions for continuing operations: Tax Jurisdiction Tax Years Covered Belgium 2015 - 2022 Germany 2007 - 2021 Luxembourg 2017 - 2018 Mexico 2015 - 2018 United Kingdom 2014 - 2015; 2018; 2020 - 2021 It is reasonably possible that certain tax examinations and/or tax litigation will conclude within the next twelve months, which could have a material impact on tax expense. Based upon the circumstances surrounding these examinations, the impact is not currently quantifiable. Other Tax Matters During fiscal 2023, 2022 and 2021, the Company incurred charges for restructuring and impairment costs of $1,064 million, $721 million and $242 million, which generated tax benefits of $122 million, $50 million and $39 million, respectively. In fiscal 2021, the Company completed an intercompany transfer of certain of the Company’s intellectual property rights which resulted in a net tax charge of $417 million. Impacts of Tax Legislation and Change in Statutory Tax Rates On September 11, 2023, the Schaffhausen parliament approved a partial revision of the cantonal act on direct taxation: Immediate Minimum Taxation Measure (“IMTM”). The IMTM increases Switzerland’s combined statutory income tax rate to approximately 15%. On November 19, 2023, IMTM was approved in a public referendum in the canton of Schaffhausen, was published in the cantonal official gazette on December 8,2023, and is effective starting January 1, 2024. The Company is still evaluating the impact on its deferred tax assets in the canton of Schaffhausen, however the revaluation of these assets could have a noncash impact of less than $100 million to its consolidated financial statements. On August 16, 2022, the U.S. enacted the Inflation Reduction Act (“IRA”) which, among other things, creates a new book minimum tax of at least 15% of consolidated GAAP pre-tax income for corporations with average book income in excess of $1 billion. The book minimum tax is first applicable in fiscal year 2024. The Company does not expect this provision to have a material impact on its effective tax rate. During the fiscal years ended 2023, 2022 and 2021, other tax legislation was adopted in various jurisdictions. These law changes did not have a material impact on the Company's consolidated financial statements. Selected Income Tax Data Selected income tax data related to continuing operations were as follows (in millions): 2023 2022 2021 Components of income (loss) from continuing operations before income taxes: U.S. $ (130) $ 67 $ 543 Non-U.S. 1,840 1,643 2,071 Income from continuing operations before income taxes $ 1,710 $ 1,710 $ 2,614 Components of the provision (benefit) for income taxes: Current U.S. federal $ (165) $ (219) $ 459 U.S. state 105 53 108 Non-U.S. 413 294 265 353 128 832 Deferred U.S. federal (267) (175) (7) U.S. state (25) (69) 46 Non-U.S. (384) 103 (3) (676) (141) 36 Income tax provision (benefit) $ (323) $ (13) $ 868 Income taxes paid $ 430 $ 568 $ 504 At September 30, 2023 and 2022, the Company recorded within the consolidated statements of financial position in other current assets approximately $65 million and $253 million, respectively, of income tax assets. At September 30, 2023 and 2022, the Company recorded within the consolidated statements of financial position in other current liabilities approximately $249 million and $143 million, respectively, of accrued income tax liabilities. The Company has not provided U.S. or non-U.S. income taxes on approximately $24.4 billion of outside basis differences of consolidated subsidiaries of Johnson Controls International plc. The Company is indefinitely reinvested in these basis differences. The reduction of the outside basis differences via the sale or liquidation of these subsidiaries and/or distributions could create taxable income. The Company's intent is to reduce the outside basis differences only when it would be tax efficient. Given the numerous ways in which the basis differences may be reduced, it is not practicable to estimate the amount of unrecognized withholding taxes and deferred tax liability on the outside basis differences. Deferred taxes were classified in the consolidated statements of financial position as follows (in millions): September 30, 2023 2022 Other noncurrent assets $ 1,499 $ 954 Other noncurrent liabilities (411) (503) Net deferred tax asset $ 1,088 $ 451 Temporary differences and carryforwards which gave rise to deferred tax assets and liabilities included (in millions): September 30, 2023 2022 Deferred tax assets Accrued expenses and reserves $ 507 $ 376 Employee and retiree benefits 71 78 Property, plant and equipment 629 444 Net operating loss and other credit carryforwards 6,748 6,488 Research and development 171 52 Operating lease liabilities 348 309 Other, net 38 58 8,512 7,805 Valuation allowances (6,378) (5,973) 2,134 1,832 Deferred tax liabilities Subsidiaries, joint ventures and partnerships 446 338 Intangible assets 252 734 Operating lease right-of-use assets 348 309 1,046 1,381 Net deferred tax asset $ 1,088 $ 451 At September 30, 2023, the Company had available net operating loss carryforwards of approximately $24.4 billion, of which $14.1 billion will expire at various dates between 2024 and 2043, and the remainder has an indefinite carryforward period. The Company had available U.S. foreign tax credit carryforwards at September 30, 2023 of $35 million which will expire in 2029. The valuation allowance, generally, is for loss and credit carryforwards for which realization is uncertain because it is unlikely that the losses and/or credits will be realized given the lack of sustained profitability and/or limited carryforward periods in certain countries.

Segment Information

Segment Information	12 Months Ended
Segment Information	Sep. 30, 2023
Segment Reporting [Abstract]
SEGMENT INFORMATION	SEGMENT INFORMATION ASC 280, "Segment Reporting," establishes the standards for reporting information about segments in financial statements. In applying the criteria set forth in ASC 280, the Company has determined that it has four reportable segments for financial reporting purposes. The Company conducts its business through four business segments: • Building Solutions North America which operates in the United States and Canada; • Building Solutions EMEA/LA which operates in Europe, the Middle East, Africa and Latin America; • Building Solutions Asia Pacific which operates in Asia Pacific; and • Global Products which operates worldwide and includes the Johnson Controls-Hitachi joint venture. The Building Solutions segments: • Design, sell, install and service HVAC, controls, building management, refrigeration, integrated electronic security and integrated fire-detection and suppression systems; and • Provide energy-efficiency solutions and technical services, including data-driven "smart building" solutions as well as inspection, scheduled maintenance, and repair and replacement of mechanical and controls systems. The Global Products segment designs, manufactures and sells: • HVAC equipment, controls software and software services for residential and commercial applications; • Refrigeration equipment and controls; • Fire protection and suppression; and • Security products, including intrusion security, anti-theft devices, access control, and video surveillance and management systems. The Company’s segments provide products and services to commercial, institutional, industrial, data center, governmental and residential customers. Management evaluates the performance of its business segments primarily on segment earnings before interest, taxes and amortization ("EBITA"), which represents income from continuing operations before income taxes and noncontrolling interests, excluding general corporate expenses, intangible asset amortization, net financing charges, restructuring and impairment costs, and net mark-to-market adjustments related to pension and postretirement plans and restricted asbestos investments. Financial information relating to the Company’s reportable segments is as follows (in millions): Year Ended September 30, 2023 2022 2021 Net Sales Building Solutions North America $ 10,330 $ 9,367 $ 8,685 Building Solutions EMEA/LA 4,096 3,845 3,884 Building Solutions Asia Pacific 2,746 2,714 2,616 Global Products 9,621 9,373 8,483 Total net sales $ 26,793 $ 25,299 $ 23,668 Year Ended September 30, 2023 2022 2021 Segment EBITA (1) Building Solutions North America $ 1,394 $ 1,122 $ 1,204 Building Solutions EMEA/LA 316 358 401 Building Solutions Asia Pacific 343 332 344 Global Products 1,965 1,594 1,436 Total segment EBITA 4,018 3,406 3,385 Amortization of intangible assets (439) (427) (435) Corporate expenses (432) (369) (290) Net financing charges (281) (213) (206) Restructuring and impairment costs (1,064) (721) (242) Net mark-to-market adjustments (92) 34 402 Income from continuing operations before income taxes $ 1,710 $ 1,710 $ 2,614 September 30, 2023 2022 2021 Assets (2) Building Solutions North America $ 15,603 $ 15,226 $ 15,317 Building Solutions EMEA/LA 5,202 4,991 5,397 Building Solutions Asia Pacific 2,645 2,474 2,728 Global Products 15,406 15,185 15,227 38,856 37,876 38,669 Assets held for sale — 66 156 Unallocated 3,386 4,216 3,065 Total $ 42,242 $ 42,158 $ 41,890 Year Ended September 30, 2023 2022 2021 Depreciation/Amortization Building Solutions North America $ 225 $ 213 $ 245 Building Solutions EMEA/LA 101 96 103 Building Solutions Asia Pacific 23 21 25 Global Products 454 461 432 803 791 805 Corporate 45 39 40 Total $ 848 $ 830 $ 845 Year Ended September 30, 2023 2022 2021 Capital Expenditures Building Solutions North America $ 104 $ 141 $ 87 Building Solutions EMEA/LA 119 119 128 Building Solutions Asia Pacific 33 22 31 Global Products 233 257 265 489 539 511 Corporate 50 53 41 Total $ 539 $ 592 $ 552 (1) For the years ended September 30, 2023, 2022 and 2021, segment EBITA includes $262 million, $240 million and $250 million, respectively, of equity income for the Global Products segment. Equity income for other segments is immaterial. (2) Building Solutions EMEA/LA assets as of September 30, 2023, 2022 and 2021 include $130 million, $115 million and $111 million, respectively, of investments in partially-owned affiliates. Global Products assets as of September 30, 2023, 2022 and 2021 include $905 million, $834 million and $945 million, respectively, of investments in partially-owned affiliates. Investments in partially-owned affiliates for other segments are immaterial. In fiscal 2023, 2022 and 2021, no customer exceeded 10% of consolidated net sales. Geographic Segments Financial information relating to the Company’s operations by geographic area is as follows (in millions): Year Ended September 30, 2023 2022 2021 Net Sales United States $ 13,989 $ 12,864 $ 11,577 Europe 4,882 4,186 4,069 Asia Pacific 5,610 5,791 5,748 Other Non-U.S. 2,312 2,458 2,274 Total $ 26,793 $ 25,299 $ 23,668 Long-Lived Assets (Year-end) United States $ 1,594 $ 1,582 $ 1,638 Europe 514 462 436 Asia Pacific 630 658 727 Other Non-U.S. 398 429 427 Total $ 3,136 $ 3,131 $ 3,228 Net sales attributed to geographic locations are based on the location of where the sale originated. Long-lived assets by geographic location consist of net property, plant and equipment.

Guarantees

Guarantees	12 Months Ended
Guarantees	Sep. 30, 2023
Guarantees [Abstract]
GUARANTEES	GUARANTEES Certain of the Company's subsidiaries at the business segment level have guaranteed the performance of third-parties and provided financial guarantees for uncompleted work and financial commitments. The terms of these guarantees vary with end dates ranging from the current fiscal year through the completion of such transactions and would typically be triggered in the event of nonperformance. Performance under the guarantees, if required, would not have a material effect on the Company's financial position, results of operations or cash flows. The Company offers warranties to its customers depending upon the specific product and terms of the customer purchase agreement. A typical warranty program requires that the Company replace defective products within a specified time period from the date of sale. The changes in the carrying amount of the Company’s total product warranty liability were as follows (in millions). Year Ended September 30, 2023 2022 Balance at beginning of period $ 180 $ 192 Accruals for warranties issued during the period 134 119 Settlements made (in cash or in kind) during the period (112) (114) Changes in estimates to pre-existing warranties 1 (6) Accruals from acquisitions and divestitures 1 — Currency translation (1) (11) Balance at end of period $ 203 $ 180

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Sep. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Environmental Matters The following table presents the location and amount of reserves for environmental liabilities in the Company's consolidated statements of financial position (in millions): September 30, 2023 2022 Other current liabilities $ 31 $ 66 Other noncurrent liabilities 211 220 Total reserves for environmental liabilities $ 242 $ 286 The Company periodically examines whether the contingent liabilities related to the environmental matters described below are probable and reasonably estimable based on experience and ongoing developments in those matters, including continued study and analysis of ongoing remediation obligations. The Company expects that it will pay the amounts recorded over an estimated period of up to 20 years. The Company is not able to estimate a possible loss or range of loss, if any, in excess of the established accruals for environmental liabilities at this time. A substantial portion of the Company's environmental reserves relates to ongoing long-term remediation efforts to address contamination relating to fire-fighting foams containing perfluorooctane sulfonate ("PFOS"), perfluorooctanoic acid ("PFOA"), and/or other per- and poly-fluoroalkyl substances ("PFAS") at or near the Tyco Fire Products L.P. (“Tyco Fire Products”) Fire Technology Center ("FTC") located in Marinette, Wisconsin and surrounding areas in the City of Marinette and Town of Peshtigo, Wisconsin, as well as the continued remediation of PFAS, arsenic and other contaminants at the Tyco Fire Products Stanton Street manufacturing facility also located in Marinette, Wisconsin (the “Stanton Street Facility”). The use of fire-fighting foams at the FTC was primarily for training and testing purposes to ensure that such products sold by the Company’s affiliates, Chemguard, Inc. ("Chemguard") and Tyco Fire Products, were effective at suppressing high intensity fires that may occur at military installations, airports or elsewhere. On July 18, 2023, Tyco Fire Products announced that it plans to discontinue the production and sale of fluorinated firefighting foams by June 2024, including AFFF products, and will transition to non-fluorinated foam alternatives. Tyco Fire Products has been engaged in remediation activities at the Stanton Street Facility since 1990. Its corporate predecessor, Ansul Incorporated (“Ansul”), manufactured arsenic-based agricultural herbicides at the Stanton Street Facility, which resulted in significant arsenic contamination of soil and groundwater on the site and in parts of the adjoining Menominee River. In 2009, Ansul entered into an Administrative Consent Order (the "Consent Order") with the U.S. Environmental Protection Agency (“EPA”) to address the presence of arsenic at the site. Under this agreement, Tyco Fire Products’ principal obligations are to contain the arsenic contamination on the site, pump and treat on-site groundwater, dredge, treat and properly dispose of contaminated sediments in the adjoining river areas, and monitor contamination levels on an ongoing basis. Activities completed under the Consent Order since 2009 include the installation of a subsurface barrier wall around the facility to contain contaminated groundwater, the installation and ongoing operation and monitoring of a groundwater extraction and treatment system and the dredging and offsite disposal of treated river sediment. In addition to ongoing remediation activities, the Company is also working with the Wisconsin Department of Natural Resources ("WDNR") to investigate and remediate the presence of PFAS at or near the Stanton Street Facility as part of the evaluation and remediation of PFAS in the Marinette region. Tyco Fire Products is operating and monitoring the recently constructed Groundwater Extraction and Treatment System ("GETS"), a permanent groundwater remediation system that extracts groundwater containing PFAS, treats it using advanced filtration systems, and returns the treated water to the environment. Tyco Fire Products has also completed the removal and disposal of PFAS-affected soil from the FTC. The Company's reserves for continued remediation of the FTC, the Stanton Street Facility and surrounding areas in Marinette and Peshtigo are based on estimates of costs associated with the long-term remediation actions, including the continued operation of the GETS, the implementation of long-term drinking water solutions, continued monitoring and testing of the wells, the operation and wind-down of other legacy remediation and treatment systems and the completion of ongoing investigation obligations. PFOA, PFOS, and other PFAS compounds are being studied by EPA and other environmental and health agencies and researchers. In March 2021, EPA published its final determination to regulate PFOS and PFOA in drinking water. In March 2023, EPA announced a proposed National Primary Drinking Water Regulation (“NPDWR”) for six PFAS compounds including PFOA and PFOS. The NPDWR proposes establishing legally enforceable levels, called Maximum Contaminant Levels, of 4.0 parts per trillion for each of PFOA and PFOS. EPA indicated that it anticipates finalizing the regulation by the end of 2023. In August 2022, EPA published a proposed rule that would designate PFOA and PFOS as “hazardous substances” under Comprehensive Environmental Response, Compensation and Liability Act ("CERCLA"). In April 2023, EPA issued an Advanced Notice of Proposed Rulemaking ("ANPR") seeking input on whether it should expand the proposed rule to designate as "hazardous substances" under CERCLA: (1) seven additional PFAS; (2) the precursors to PFOA, PFOS, and the seven additional PFAS; or (3) entire categories of PFAS. It is difficult to estimate the Company’s ultimate level of liability at many remediation sites due to the large number of other parties that may be involved, the complexity of determining the relative liability among those parties, the financial viability of other potentially responsible parties and third-party indemnitors, the uncertainty as to the nature and scope of the investigations and remediation to be conducted, changes in environmental regulations, changes in permissible levels of specific compounds in drinking water sources, or changes in enforcement theories and policies, including efforts to recover natural resource damages, the uncertainty in the application of law and risk assessment, the various choices and costs associated with diverse technologies that may be used in corrective actions at the sites, and the often quite lengthy periods over which eventual remediation may occur. It is possible that technological, regulatory or enforcement developments, the results of additional environmental studies or other factors could change the Company's expectations with respect to future charges and cash outlays, and such changes could be material to the Company's future results of operations, financial condition or cash flows. Nevertheless, the Company does not currently believe that any claims, penalties or costs in addition to the amounts accrued will have a material adverse effect on the Company’s financial position, results of operations or cash flows. In addition, the Company has identified asset retirement obligations for environmental matters that are expected to be addressed at the retirement, disposal, removal or abandonment of existing owned facilities. Conditional asset retirement obligations were $13 million and $17 million at September 30, 2023 and 2022, respectively. FTC-Related Remediation and Litigation On June 21, 2019, the WDNR announced that it had received from the Wisconsin Department of Health Services (“WDHS”) a recommendation for groundwater quality standards as to, among other compounds, PFOA and PFOS. The WDHS recommended a groundwater enforcement standard for PFOA and PFOS of 20 parts per trillion. Although Wisconsin approved final regulatory standards for PFOA and PFOS in drinking water and surface water in February 2022, the Wisconsin Natural Resources Board did not approve WDNR's proposed standards for PFOA and PFOS in groundwater. The WDNR has initiated a rulemaking proceeding for a rule that would establish groundwater quality standards for PFOA, PFOS, perfluorobutane sulfonic acid and its potassium salt (“PFBS”) and hexafluoropropylene oxide dimer acid and its ammonium salt (“HFPO-DA”). WDNR indicates that the rule could be finalized by the winter of 2023-2024. In July 2019, the Company received a letter from the WDNR directing the expansion of the evaluation of PFAS in the Marinette region to include (1) biosolids sludge produced by the City of Marinette Waste Water Treatment Plant and spread on certain fields in the area and (2) the Menominee and Peshtigo Rivers. On October 16, 2019, the WDNR issued a “Notice of Noncompliance” to Tyco Fire Products and Johnson Controls, Inc. regarding the WDNR’s July 2019 letter. The WDNR issued a further letter regarding the issue on November 4, 2019. In February 2020, the WDNR sent a letter to Tyco Fire Products and Johnson Controls, Inc. further directing the expansion of the evaluation of PFAS in the Marinette region to include investigation activities south and west of the previously defined FTC study area. In September 2021, the WDNR sent an additional “Notice of Noncompliance” to Tyco Fire Products and Johnson Controls, Inc. concerning land-applied biosolids, which reviewed and responded to the Company’s biosolids investigation conducted to that date. On April 10, 2023, the WDNR issued a third “Notice of Noncompliance” to Tyco Fire Products and Johnson Controls, Inc. concerning land-applied biosolids in the Marinette region. Tyco Fire Products and Johnson Controls, Inc. believe that they have complied with all applicable environmental laws and regulations. The Company cannot predict what regulatory or enforcement actions, if any, might result from the WDNR’s actions, or the consequences of any such actions. In March 2022, the Wisconsin Department of Justice (“WDOJ”) filed a civil enforcement action against Johnson Controls Inc. and Tyco Fire Products in Wisconsin state court relating to environmental matters at the FTC ( State of Wisconsin v. Tyco Fire Products, LP and Johnson Controls, Inc. , Case No. 22-CX-1 (filed March 14, 2022 in Circuit Court in Marinette County, Wisconsin)). The WDOJ alleges that the Company failed to timely report the presence of PFAS chemicals at the FTC, and that the Company has not sufficiently investigated or remediated PFAS at or near the FTC. The WDOJ seeks monetary penalties and an injunction ordering these two subsidiaries to complete a site investigation and cleanup of PFAS contamination in accordance with the WDNR's requests. The parties are proceeding with fact discovery and the court has set a trial date of December 3, 2024. The Company is vigorously defending this civil enforcement action and believes that it has meritorious defenses, but the Company is presently unable to predict the duration, scope, or outcome of this action. In October 2022, the Town of Peshtigo filed a tort action in Wisconsin state court against Tyco Fire Products, Johnson Controls Inc., Chemguard, Inc., and ChemDesign, Inc. relating to environmental matters at the FTC ( Town of Peshtigo v. Tyco Fire Products L.P. et al. , Case No. 2022CV000234 (filed October 18, 2022 in Circuit Court in Marinette County, Wisconsin)). The Town alleges that use of AFFF products at the FTC caused contamination of water supplies in Peshtigo. The Town seeks monetary penalties and an injunction ordering abatement of PFAS contamination in Peshtigo. The case has been removed to federal court and transferred to a multi-district litigation ("MDL") before the United States District Court for the District of South Carolina. The Company plans to vigorously defend against this case and believes that it has meritorious defenses, but the Company is presently unable to predict the duration, scope, or outcome of this action. In November 2022, individuals filed six actions in Dane County, Wisconsin alleging personal injury and/or property damage against Tyco Fire Products, Johnson Controls Inc., Chemguard, Inc., and other unaffiliated defendants related to environmental matters at the FTC. Plaintiffs allege that use of AFFF products at the FTC and activities by third parties unrelated to the Company contaminated nearby drinking water sources, surface waters, and other natural resources and properties, including their personal properties. The individuals seek monetary damages for their personal injury and/or property damage. These lawsuits have been transferred to the MDL. Subsequently, several additional plaintiffs have direct-filed in the MDL complaints with similar allegations. These lawsuits are presently at the beginning stages of litigation. The Company is vigorously defending these cases and believes that it has meritorious defenses, but the Company is presently unable to predict the duration, scope, or outcome of this action. Aqueous Film-Forming Foam ("AFFF") Litigation Two of the Company's subsidiaries, Chemguard and Tyco Fire Products, have been named, along with other defendant manufacturers, suppliers and distributors, and, in some cases, certain subsidiaries of the Company affiliated with Chemguard and Tyco Fire Products, in a number of class action and other lawsuits relating to the use of fire-fighting foam products by the U.S. Department of Defense (the "DOD") and others for fire suppression purposes and related training exercises. Plaintiffs generally allege that the firefighting foam products contain or break down into the chemicals PFOS and PFOA and/or other PFAS compounds and that the use of these products by others at various airbases, airports and other sites resulted in the release of these chemicals into the environment and ultimately into communities’ drinking water supplies neighboring those airports, airbases and other sites. Plaintiffs generally seek compensatory damages, including damages for alleged personal injuries, medical monitoring, diminution in property values, investigation and remediation costs, and natural resources damages, and also seek punitive damages and injunctive relief to address remediation of the alleged contamination. In September 2018, Tyco Fire Products and Chemguard filed a Petition for Multidistrict Litigation with the United States Judicial Panel on Multidistrict Litigation (“JPML”) seeking to consolidate all existing and future federal cases into one jurisdiction. On December 7, 2018, the JPML issued an order transferring various AFFF cases to the MDL. Additional cases have been identified for transfer to or are being directly filed in the MDL. AFFF Putative Class Actions Chemguard and Tyco Fire Products are named in 43 pending putative class actions in federal courts originating from 16 states and territories. All of these cases have been direct-filed in or transferred to the MDL. AFFF Individual or Mass Actions There are more than 5,400 individual or “mass” actions pending that were filed in state or federal courts originating from 52 states and territories against Chemguard and Tyco Fire Products and other defendants in which the plaintiffs generally seek compensatory damages, including damages for alleged personal injuries, medical monitoring, and alleged diminution in property values. The cases involve plaintiffs from various states including approximately 7,000 plaintiffs in Colorado and more than 5,400 other plaintiffs. The vast majority of these matters have been tagged for transfer to, transferred to, or directly-filed in the MDL, and it is anticipated that several newly-filed state court actions will be similarly tagged and transferred. There are several matters that are proceeding in state courts, including actions in Arizona, Illinois and Virginia. Tyco and Chemguard are also periodically notified by other individuals that they may assert claims regarding PFOS and/or PFOA contamination allegedly resulting from the use of AFFF. AFFF Municipal and Water Provider Cases Chemguard and Tyco Fire Products have been named as defendants in more than 720 cases in federal and state courts involving municipal or water provider plaintiffs that were filed in state or federal courts originating from 35 states and territories. The vast majority of these cases have been transferred to or were directly filed in the MDL, and it is anticipated that the remaining cases will be transferred to the MDL. These municipal and water provider plaintiffs generally allege that the use of the defendants’ fire-fighting foam products at fire training academies, municipal airports, Air National Guard bases, or Navy or Air Force bases released PFOS and PFOA into public water supply wells and/or other public property, allegedly requiring remediation. The MDL court set the first case for trial on June 5, 2023 ( City of Stuart (Florida) v. 3M Co. et al. ). On April 26, 2023, the parties entered a stipulation dismissing Chemguard with prejudice from the City of Stuart case, and on May 4, 2023 the parties entered into a stipulation dismissing Tyco with prejudice from the City of Stuart case. On June 5, 2023, the MDL court continued the trial date for the City of Stuart case, and the parties remaining in that case later reached settlement. The parties in the MDL have designated four additional plaintiffs as water provider bellwether cases and are conducting initial discovery into those cases. The parties are also working to identify potential personal injury cases for an additional bellwether phase. Tyco and Chemguard are also periodically notified by other municipal entities that those entities may assert claims regarding PFOS and/or PFOA contamination allegedly resulting from the use of AFFF. State or U.S. Territory Attorneys General Litigation related to AFFF In June 2018, the State of New York filed a lawsuit in New York state court ( State of New York v. The 3M Company et al No. 904029-18 (N.Y. Sup. Ct., Albany County)) against a number of manufacturers, including affiliates of the Company, with respect to alleged PFOS and PFOA contamination purportedly resulting from firefighting foams used at locations across New York, including Stewart Air National Guard Base in Newburgh and Gabreski Air National Guard Base in Southampton, Plattsburgh Air Force Base in Plattsburgh, Griffiss Air Force Base in Rome, and unspecified “other” sites throughout the State. The lawsuit seeks to recover costs and natural resource damages associated with contamination at these sites. This suit has been removed to the United States District Court for the Northern District of New York and transferred to the MDL. In February 2019, the State of New York filed a second lawsuit in New York state court ( State of New York v. The 3M Company et al (N.Y. Sup. Ct., Albany County)), against a number of manufacturers, including affiliates of the Company, with respect to alleged PFOS and PFOA contamination purportedly resulting from firefighting foams used at additional locations across New York. This suit has been removed to the United States District Court for the Northern District of New York and transferred to the MDL. In July 2019, the State of New York filed a third lawsuit in New York state court ( State of New York v. The 3M Company et al (N.Y. Sup. Ct., Albany County)), against a number of manufacturers, including affiliates of the Company, with respect to alleged PFOS and PFOA contamination purportedly resulting from firefighting foams used at further additional locations across New York. This suit has been removed to the United States District Court for the Northern District of New York and transferred to the MDL. In November 2019, the State of New York filed a fourth lawsuit in New York state court ( State of New York v. The 3M Company et al (N.Y. Sup. Ct., Albany County)), against a number of manufacturers, including affiliates of the Company, with respect to alleged PFOS and PFOA contamination purportedly resulting from firefighting foams used at further additional locations across New York. This suit has been removed to federal court and transferred to the MDL. In April 2021, the State of Alaska filed a lawsuit in the superior court of the State of Alaska against a number of manufacturers and other defendants, including affiliates of the Company, with respect to PFOS and PFOA damage of the State’s land and natural resources allegedly resulting from the use of firefighting foams at various locations throughout the State. The State’s case has been removed to federal court and transferred to the MDL. The State of Alaska has also named a number of manufacturers and other defendants, including affiliates of the Company, as third-party defendants in two cases brought by individuals against the State. These two cases have also been transferred to the MDL. In early November 2021, the Attorney General of the State of North Carolina filed four individual lawsuits in the superior courts of the State of North Carolina against a number of manufacturers and other defendants, including affiliates of the Company, with respect to PFOS and PFOA damage of the State’s land, natural resources, and property allegedly resulting from the use of firefighting foams at four separate locations throughout the State. These four cases have been removed to federal court and transferred to the MDL. In October 2022, the Attorney General filed two similar lawsuits in the superior courts of the State of North Carolina regarding alleged PFAS damages at two additional locations. These two cases have also been removed to federal court and transferred to the MDL. In addition, 29 other states and territories have filed 31 lawsuits against a number of manufacturers and other defendants, including affiliates of the Company, with respect to PFAS damage of each of those State's environmental and natural resources allegedly resulting from the manufacture, storage, sale, distribution, marketing, and use of PFAS-containing AFFF within each respective State. The states and territories are: Arkansas, Arizona, California, Colorado, Delaware, the District of Columbia, Florida, Illinois, Kentucky, Massachusetts, Maryland, Maine, Michigan, Mississippi, New Hampshire, New Jersey, New Mexico, Ohio, Oregon, Rhode Island, South Carolina, Tennessee, Texas, Vermont, Washington, Wisconsin, Guam, the Northern Mariana Islands, and Puerto Rico. All of these complaints, other than Delaware and South Carolina, have been removed to federal court and transferred to the MDL. It is anticipated that the Delaware and South Carolina complaints will be removed to federal court and transferred to the MDL. Other AFFF Related Matters In March 2020, the Kalispel Tribe of Indians (a federally recognized Tribe) and two tribal corporations filed a lawsuit in the United States District Court for the Eastern District of Washington against a number of manufacturers, including affiliates of the Company, and the United States with respect to PFAS contamination allegedly resulting from the use and disposal of AFFF by the United States Air Force at and around Fairchild Air Force Base in eastern Washington. This case has been transferred to the MDL. In October 2022, the Red Cliff Band of Lake Superior Chippewa Indians (a federally recognized tribe) filed a lawsuit in the United States District Court for the Western District of Wisconsin against a number of manufacturers, including affiliates of the Company, with respect to PFAS contamination allegedly resulting from the use and disposal of AFFF at Duluth Air National Guard Base in Duluth, Minnesota. This complaint has been transferred to the MDL. In July 2023, the Fond du Lac Band of Lake Superior Chippewa (a federally recognized tribe) direct-filed a lawsuit in the MDL against a number of manufacturers, including affiliates of the Company, with respect to PFAS contamination allegedly resulting from the use and disposal of AFFF at Duluth Air National Guard Base in Duluth, Minnesota. The Company is vigorously defending all of the above AFFF matters and believes that it has meritorious defenses to class certification and the claims asserted, including statutes of limitations, the government contractor defense, various medical and scientific defenses, and other factual and legal defenses. The government contractor defense is a form of immunity available to government contractors that produced products for the United States government pursuant to the government’s specifications. In September 2022, the AFFF MDL Court declined to grant summary judgment on the government contractor defense, ruling that various factual issues relevant to the defense must be decided by a jury rather than the Court. The Company has a historical general liability insurance program and is pursuing coverage under the program from various insurers through insurance claims discussions and litigation pending in a state court in Wisconsin and a federal district court in South Carolina. The insurance litigation involves numerous factual and legal issues and remains at a relatively early stage. However, there are numerous factual and legal issues to be resolved in connection with these claims, and it is extremely difficult to predict the outcome or ultimate financial exposure, if any, represented by these matters, and there can be no assurance that any such exposure will not be material. Asbestos Matters The Company and certain of its subsidiaries, along with numerous other third parties, are named as defendants in personal injury lawsuits based on alleged exposure to asbestos containing materials. These cases have typically involved product liability claims based primarily on allegations of manufacture, sale or distribution of industrial products that either contained asbestos or were used with asbestos containing components. The following table presents the location and amount of asbestos-related assets and liabilities in the Company's consolidated statements of financial position (in millions): September 30, 2023 2022 Other current liabilities $ 58 $ 58 Other noncurrent liabilities 364 380 Total asbestos-related liabilities 422 438 Other current assets 28 37 Other noncurrent assets 273 263 Total asbestos-related assets 301 300 Net asbestos-related liabilities $ 121 $ 138 The following table presents the components of asbestos-related assets (in millions): September 30, 2023 2022 Restricted Cash $ 20 $ 6 Investments 231 239 Total restricted assets 251 245 Insurance receivables for asbestos-related liabilities 50 55 Total asbestos-related assets $ 301 $ 300 The amounts recorded by the Company for asbestos-related liabilities and insurance-related assets are based on the Company's strategies for resolving its asbestos claims, currently available information, and a number of estimates and assumptions. Key variables and assumptions include the number and type of new claims that are filed each year, the average cost of resolution of claims, the identity of defendants, the resolution of coverage issues with insurance carriers, amount of insurance, and the solvency risk with respect to the Company's insurance carriers. Many of these factors are closely linked, such that a change in one variable or assumption may impact one or more of the others, and no single variable or assumption predominately influences the determination of the Company's asbestos-related liabilities and insurance-related assets. Furthermore, predictions with respect to these variables are subject to greater uncertainty in the later portion of the projection period. Other factors that may affect the Company's liability and cash payments for asbestos-related matters include uncertainties surrounding the litigation process from jurisdiction to jurisdiction and from case to case, reforms of state or federal tort legislation and the applicability of insurance policies among subsidiaries. As a result, actual liabilities or insurance recoveries could be significantly higher or lower than those recorded if assumptions used in the Company's calculations vary significantly from actual results. Self-Insured Liabilities The Company records liabilities for its workers' compensation, product, general and auto liabilities. The determination of these liabilities and related expenses is dependent on claims experience. For most of these liabilities, claims incurred but not yet reported are estimated by utilizing actuarial valuations based upon historical claims experience. The Company maintains captive insurance companies to manage its insurable liabilities. The following table presents the location and amount of insurable liabilities in the Company's consolidated statements of financial position (in millions): September 30, 2023 2022 Other current liabilities $ 86 $ 89 Accrued compensation and benefits 21 22 Other noncurrent liabilities 226 230 Total self-insured liabilities $ 333 $ 341 The following table presents the location and amount of insurable receivables in the Company's consolidated statements of financial position (in millions): September 30, 2023 2022 Other current assets $ 6 $ 10 Other noncurrent assets 14 20 Total insurance receivables $ 20 $ 30 Other Matters

Subsequent Events

Subsequent Events	12 Months Ended
Subsequent Events	Sep. 30, 2023
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTS During the weekend of September 23, 2023, the Company experienced a cybersecurity incident impacting its internal information technology ("IT") infrastructure and applications. The incident was detected shortly after receiving reports of outages to certain of the Company’s systems. Promptly after detecting the issue, the Company implemented its incident management and response plan and business continuity plans, including implementing remediation measures to mitigate the impact of the incident and restore affected systems and functions. The Company also engaged leading cybersecurity experts and other specialized consultants to assist in its investigation and remediation of the incident, as well as the restoration of impacted applications and systems. The cybersecurity incident consisted of unauthorized access, data exfiltration and deployment of ransomware by a third party to a portion of the Company’s internal IT infrastructure. The incident caused disruptions and limitation of access to portions of the Company’s business applications supporting aspects of the Company’s operations and corporate functions. Lost and deferred revenues and expenses related to the cybersecurity incident had an immaterial impact on fiscal 2023 net income . During the first quarter of fiscal 2024, expenses have been and will continue to be incurred, primarily related to third-party expenditures, including IT recovery and forensic experts and others performing professional services to investigate and remediate the incident, as well as incremental operating expenses incurred from the resulting disruption to the Company’s business operations. The overall impact in fiscal 2024 is not expected to be material to net income, net of insurance recoveries, or cash flows from continuing operations; however, the timing of recognizing the insurance recoveries may differ from the timing of recognizing the associated expenses.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	12 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Pay vs Performance Disclosure
Net Income (Loss)	$ 1,849	$ 1,532	$ 1,637

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended	12 Months Ended
Insider Trading Arrangements	Sep. 30, 2023 shares	Sep. 30, 2023 shares
Trading Arrangements, by Individual
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false
Marc Vandiepenbeeck [Member]
Trading Arrangements, by Individual
Material Terms of Trading Arrangement		On August 8, 2023, Marc Vandiepenbeeck, the Company’s Vice President and President, Building Solutions, Europe, Middle East, Africa and Latin America, entered into a Rule 10b5–1 trading arrangement (the “Vandiepenbeeck 10b5-1 Plan”) during the Company’s third quarter open trading window. The Vandiepenbeeck 10b5-1 Plan contemplates the sale in regular intervals of up to 12,974 ordinary shares of Company stock issued upon the vesting of restricted stock units and performance stock units. The restricted stock units and performance stock units are scheduled to vest in December 2023. The number of shares to be sold under the Vandiepenbeeck 10b5-1 Plan represents the maximum actual number of shares issuable under the applicable restricted stock unit and performance stock unit awards. The actual number of shares to be sold under the Vandiepenbeeck 10b5-1 Plan will depend on the achievement of applicable performance conditions under the performance share units and the number of shares withheld to satisfy tax obligations upon the vesting of the applicable awards. The Vandiepenbeeck 10b5-1 Plan is expected to become effective on or about December 20, 2023 and is scheduled to terminate upon the earlier of the sale of all shares contemplated under the Vandiepenbeeck 10b5-1 Plan or December 26, 2024.
Name	Marc Vandiepenbeeck
Title	Vice President and President, Building Solutions, Europe, Middle East, Africa and Latin America
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	August 8, 2023
Arrangement Duration	372 days
Aggregate Available	12,974	12,974

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Sep. 30, 2023
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation The consolidated financial statements include the consolidated accounts of Johnson Controls International plc and its subsidiaries that are consolidated in conformity with accounting principles generally accepted in the United States of America ("U.S. GAAP"). All significant intercompany transactions have been eliminated. The results of companies acquired or disposed of during the year are included in the consolidated financial statements from the effective date of acquisition or up to the date of disposal. Investments in partially-owned affiliates are accounted for by the equity method when the Company exercises significant influence, which typically occurs when its ownership interest exceeds 20%, and the Company does not have a controlling interest. The Company consolidates variable interest entities ("VIE") when it has the power to direct the significant activities of the entity and the obligation to absorb losses or receive benefits from the entity that may be significant. The Company did not have any material consolidated or nonconsolidated VIEs in its continuing operations for the presented reporting periods.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Fair Value of Financial Instruments	Fair Value of Financial Instruments ASC 820, "Fair Value Measurement," defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. ASC 820 also establishes a three-level fair value hierarchy that prioritizes information used in developing assumptions when pricing an asset or liability as follows: Level 1: Observable inputs such as quoted prices in active markets for identical assets or liabilities; Level 2: Quoted prices in active markets for similar assets or liabilities, quoted prices for identical or similar assets or liabilities in markets that are not active, or inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and Level 3: Unobservable inputs where there is little or no market data, which requires the reporting entity to develop its own assumptions. ASC 820 requires the use of observable market data, when available, in making fair value measurements. When inputs used to measure fair value fall within different levels of the hierarchy, the level within which the fair value measurement is categorized is based on the lowest level input that is significant to the fair value measurement.
Acquisitions	Acquisitions The purchase price of acquired businesses is allocated to the related identifiable assets and liabilities based on estimated fair values. The excess of the purchase price over the amount allocated to the assets and liabilities, if any, is recorded as goodwill. In addition, any contingent consideration is recorded at the estimated fair value as of the date of the acquisition and is recorded as part of the purchase price. This estimate is updated in future periods and any changes in the estimate, which are not considered an adjustment to the purchase price, are recorded in our consolidated statements of operations. Payments for contingent earn-out liabilities that are less than or equal to estimates on the acquisition date are reflected as financing cash outflows. Amounts paid in excess of the estimated contingent earn-out liabilities on the acquisition date are reflected as operating cash outflows. All available information is used to estimate fair values. External valuation specialists are typically engaged to assist in the fair value determination of identifiable intangible assets and any other significant assets or liabilities. The preliminary purchase price allocation is adjusted, as necessary, up to one year after the acquisition closing date as more information is obtained regarding assets acquired and liabilities assumed based on facts and circumstances that existed as of the acquisition date. The purchase price allocation methodology contains uncertainties because it requires the Company to make assumptions and to apply judgment to estimate the fair value of acquired assets and assumed liabilities. The fair value of assets and liabilities is estimated based upon the carrying value of the acquired assets and assumed liabilities and widely accepted valuation techniques, including discounted cash flows. Unanticipated events or circumstances may occur which could affect the accuracy of fair value estimates, including assumptions regarding industry economic factors and business strategies. Other estimates used in determining fair value include, but are not limited to, future cash flows or income related to intangibles, market rate assumptions and discount rates. Fair value estimates are based upon assumptions believed to be reasonable, but that are inherently uncertain, and therefore, may not be realized. Accordingly, there can be no assurance that the estimates, assumptions, and values reflected in the valuations will be realized, and actual results could differ materially.
Assets and Liabilities Held for Sale	Assets and Liabilities Held for Sale Assets and liabilities (disposal groups) to be sold are classified as held for sale in the period in which all of the following criteria are met: • Management, having the authority to approve the action, commits to a plan to sell the disposal group; • The disposal group is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such disposal groups; • An active program to locate a buyer and other actions required to complete the plan to sell the disposal group have been initiated; • Sale of the disposal group is probable and transfer of the disposal group is expected to qualify for recognition as a completed sale within one year, except if events or circumstances beyond the Company's control extend the period of time required to sell the disposal group beyond one year; • The disposal group is being actively marketed for sale at a price that is reasonable in relation to its current fair value; and • Actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn. The Company initially measures a disposal group that is classified as held for sale at the lower of its carrying value or fair value less any costs to sell in accordance with ASC 360-10-15, "Impairment or Disposal of Long-Lived Assets." The carrying amount of any assets, including goodwill, that are part of the disposal group, but not in the scope of ASC 360-10, are tested for impairment under the relevant guidance prior to measuring the disposal group at fair value, less cost to sell. Any loss resulting from this measurement is recognized in the period in which the held for sale criteria are met. Conversely, gains are not recognized on the sale of a disposal group until the date of sale. The Company assesses the fair value of a disposal group, less any costs to sell, each reporting period it remains classified as held for sale and reports any subsequent changes as an adjustment to the carrying value of the disposal group, as long as the new carrying value does not exceed the carrying value of the disposal group at the time it was initially classified as held for sale.
Cash and Cash Equivalents	Cash and Cash Equivalents
Restricted Cash	Restricted Cash
Receivables	Receivables Receivables consist of billed receivables which are currently due from customers and unbilled receivables where the Company has satisfied its performance obligations, but has not yet issued the invoice to the customer. Incentives are periodically offered to customers, including early payment discounts and extended payment terms of certain receivables. The Company extends credit to customers in the normal course of business and maintains an allowance for expected credit losses resulting from the inability or unwillingness of customers to make required payments. The allowance for expected credit losses is based on historical experience, existing economic conditions, reasonable and supportable forecasts, and any specific customer collection issues the Company has identified. The Company evaluates the reasonableness of the allowance for expected credit losses on a quarterly basis.
Inventories	Inventories Inventories are stated at the lower of cost or net realizable value using the first-in, first-out ("FIFO") method. Finished goods and work-in-process inventories include material, labor and manufacturing overhead costs.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment are recorded at cost. Depreciation is provided over the estimated useful lives of the respective assets using the straight-line method for financial reporting purposes and accelerated methods for income tax purposes. Estimated useful lives generally range from 3 to 40 years for buildings and improvements, up to 15 years for subscriber systems, and from 3 to 15 years for machinery and equipment. Interest on borrowings is capitalized during the active construction period of major capital projects, added to the cost of the underlying assets and amortized over the useful lives of the assets.
Goodwill and Indefinite-Lived Intangible Assets	Goodwill and Indefinite-Lived Intangible Assets Goodwill reflects the cost of an acquisition in excess of the fair values assigned to identifiable net assets acquired. Goodwill is reviewed for impairment during the fourth fiscal quarter (as of July 31) or more frequently if events or changes in circumstances indicate the asset might be impaired. The Company performs impairment reviews for its reporting units, which have been determined to be the Company’s reportable segments or one level below the reportable segments in certain instances, using a fair value method based on management’s judgments and assumptions or third party valuations. The fair value of a reporting unit refers to the price that would be received to sell the unit as a whole in an orderly transaction between market participants at the measurement date. In estimating the fair value, the Company uses the multiples of earnings approach based on the average of published multiples of earnings of comparable entities with similar operations and economic characteristics and applies the multiples to the Company's average of historical and future financial results for each reporting unit. In certain instances, the Company uses discounted cash flow analyses or estimated sales price to further support the fair value estimates. The inputs utilized in the analyses are classified as Level 3 inputs within the fair value hierarchy as defined in ASC 820, "Fair Value Measurement." The estimated fair value is then compared to the carrying amount of the reporting unit, including recorded goodwill. The Company is subject to financial statement risk to the extent that the carrying amount exceeds the estimated fair value. Indefinite-lived intangible assets are also subject to at least annual impairment testing in the fourth fiscal quarter or as events occur or circumstances change that indicate the assets may be impaired. Indefinite-lived intangible assets primarily consist of trademarks and trade names and are tested for impairment using a relief-from-royalty method. The Company considers the implications of both external (e.g., market growth, competition and local economic conditions) and internal (e.g., product sales and expected product growth) factors and their potential impact on cash flows related to the intangible asset in both the near- and long-term. The Company also considers the profitability of the business, among other factors, to determine the royalty rate for use in the impairment assessment.
Leases - Lessee arrangements	Leases Lessee arrangements The Company leases certain administrative, production and other facilities, fleet vehicles, information technology equipment and other equipment under arrangements that are accounted for as operating leases. The Company determines whether an arrangement contains a lease at contract inception based on whether the arrangement involves the use of a physically distinct identified asset and whether the Company has the right to obtain substantially all of the economic benefits from the use of the asset throughout the period as well as the right to direct the use of the asset. Right-of-use assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent its obligation to make lease payments arising from the lease. Right-of-use assets and the corresponding lease liabilities are recognized at commencement date based on the present value of lease payments for all leases with terms longer than twelve months. The majority of the Company's leases do not provide an implicit interest rate. To determine the present value of lease payments, the Company uses its incremental borrowing rate based on information available on the lease commencement date or the implicit rate if it is readily determinable. The Company determines its incremental borrowing rate based on a comparable market yield curve consistent with its credit rating, term of the lease and relative economic environment. The Company has elected to combine lease and nonlease components for its leases. Most leases contain options to renew or terminate the lease. Right-of-use assets and lease liabilities reflect only the options which the Company is reasonably certain to exercise. The Company has certain real estate leases that contain variable lease payments which are based on changes in the Consumer Price Index (CPI). Additionally, the Company's leases generally require it to pay for fuel, maintenance, repair, insurance and taxes. These payments are not included in the right-of-use asset or lease liability and are expensed as incurred. Lease expense is recognized on a straight-line basis over the lease term.
Leases - Lessor arrangements	Lessor arrangements The Company has monitoring services and maintenance agreements within its security business that include subscriber system assets for which the Company retains ownership. These agreements contain both lease and nonlease components. The Company has elected to combine lease and nonlease components for these arrangements where the timing and pattern of transfer of the lease and nonlease components are the same and the lease component would be classified as an operating lease if accounted for separately. The Company has concluded that in these arrangements the nonlease components are the predominant characteristic, and as a result, the combined component is accounted for under the revenue guidance.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets Long-lived assets, including right-of-use assets under operating leases, other tangible assets and intangible assets with definite lives, are reviewed for impairment whenever events or changes in circumstances indicate that the asset’s carrying amount may not be recoverable. The Company conducts its long-lived asset impairment analyses in accordance with ASC 360-10-15, "Impairment or Disposal of Long-Lived Assets," ASC 350-30, "General Intangibles Other than Goodwill" and ASC 985-20, "Costs of Software to be Sold, Leased, or Marketed." Assets and liabilities are grouped at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities and evaluates the asset group against the sum of the undiscounted future cash flows. If the undiscounted cash flows do not indicate the carrying amount of the asset group is recoverable, an impairment charge is measured as the amount by which the carrying amount of the asset group exceeds its fair value based on discounted cash flow analysis or appraisals. Intangible assets acquired in a business combination that are used in research and development activities are considered indefinite-lived until the completion or abandonment of the associated research and development efforts. During the period that those assets are considered indefinite lived, they are not amortized but are tested for impairment annually and more frequently if events or changes in circumstances indicate that it is more likely than not that the asset is impaired. If the carrying amount of an intangible asset exceeds its fair value, the Company recognizes an impairment loss in an amount equal to that excess.
Revenue Recognition	Revenue Recognition Revenue from certain long-term contracts to design, manufacture and install building products and systems as well as unscheduled repair or replacement services is recognized on an over time basis, with progress towards completion measured using a cost-to-cost input method based on the relationship between actual costs incurred and total estimated costs at completion. The cost-to-cost input method is used as it best depicts the transfer of control to the customer that occurs as the Company incurs costs. Changes to the original estimates may be required during the life of the contract and such estimates are reviewed monthly. If contract modifications result in additional goods or services that are distinct from those transferred before the modification, they are accounted for prospectively as if the Company entered into a new contract. If the goods or services in the modification are not distinct from those in the original contract, sales and gross profit are adjusted using the cumulative catch-up method for revisions in estimated total contract costs and contract values. Estimated losses are recorded when identified. The Company does not adjust the promised amount of consideration for the effects of a significant financing component because at contract inception it expects to receive the payment within twelve months of transfer of goods or services. The Company enters into extended warranties and long-term service and maintenance agreements with certain customers. For these arrangements, revenue is recognized over time on a straight-line basis over the respective contract term. The Company also sells certain HVAC and refrigeration products and services in bundled arrangements with multiple performance obligations, such as equipment, commissioning, service labor and extended warranties. Approximately four to twelve months separate the timing of the first deliverable until the last piece of equipment is delivered. There may also be extended warranty arrangements with durations of one to five years commencing upon the end of the standard warranty period. In addition, the Company sells security monitoring systems that may have multiple performance obligations, including equipment, installation, monitoring services and maintenance agreements. Revenue associated with the sale of equipment and related installations are recognized over time on a cost-to-cost input method, while the revenue for monitoring and maintenance services are recognized over time as services are rendered. The transaction price is allocated to each performance obligation based on the relative standalone selling price method. In order to estimate relative standalone selling price, market data and transfer price studies are utilized. If the standalone selling price is not directly observable, the Company estimates the standalone selling price using an adjusted market assessment approach or expected cost plus margin approach. If the Company retains ownership of the subscriber system asset, fees for monitoring and maintenance services are recognized over the contract term on a straight-line basis. Non-refundable fees received in connection with the initiation of a monitoring contract, along with associated direct and incremental selling costs, are deferred and amortized over the estimated life of the contract. In all other cases, the Company recognizes revenue at the point in time when control over the goods or services transfers to the customer. The Company assesses variable consideration that may affect the total transaction price, including discounts, rebates, refunds, credits or other similar sources of variable consideration, when determining the transaction price of each contract. The Company includes variable consideration in the estimated transaction price when it is probable that significant reversal of revenue recognized would not occur when the uncertainty associated with variable consideration is subsequently resolved. These estimates are based on the amount of consideration that the Company expects to be entitled to. Shipping and handling costs billed to customers are included in sales and the related costs are included in cost of sales when control transfers to the customer. The Company presents amounts collected from customers for sales and other taxes net of the related amounts remitted.
Subscriber System Assets, Dealer Intangibles and Related Deferred Revenue Accounts	Subscriber System Assets, Dealer Intangibles and Related Deferred Revenue Accounts The Company considers assets related to the acquisition of new customers in its electronic security business in three asset categories: • Internally generated residential subscriber systems outside of North America; • Internally generated commercial subscriber systems; and • Customer accounts acquired through the ADT dealer program, primarily outside of North America (referred to as dealer intangibles). Subscriber system assets include installed property, plant and equipment for which the Company retains ownership and deferred costs directly related to the customer acquisition and system installation. Subscriber system assets represent capitalized equipment (e.g. security control panels, touch pad, motion detectors, window sensors, and other equipment) and installation costs associated with electronic security monitoring arrangements under which the Company retains ownership of the security system assets in a customer's place of business or residence. Installation costs represent costs incurred to prepare the asset for its intended use. The Company pays property taxes on the subscriber system assets and may retrieve such assets when the agreement is terminated. These assets embody a probable future economic benefit as they generate future monitoring revenue for the Company. Costs related to the subscriber system equipment and installation are categorized as property, plant and equipment rather than deferred costs. Deferred costs associated with subscriber system assets represent direct and incremental selling expenses (such as commissions) related to acquiring the customer. Commissions related to up-front consideration paid by customers in connection with the establishment of the monitoring arrangement are determined based on a percentage of the up-front fees and do not exceed deferred revenue. Such deferred costs are recorded as other current and noncurrent assets within the consolidated statements of financial position. Subscriber system assets and any deferred revenue resulting from the customer acquisition are accounted for over the expected life of the subscriber. In certain geographical areas which have a large number of customers that behave in a similar manner over time, the Company accounts for subscriber system assets and related deferred revenue using pools, with separate pools for the components of subscriber system assets and any related deferred revenue based on the same month and year of acquisition. Pooled subscriber system assets and related deferred revenue are depreciated using a straight-line method with lives up to 12 years and considering customer attrition. Non-pooled subscriber systems (primarily in Europe, Latin America and Asia) and related deferred revenue are depreciated using a straight-line method with a 15-year life, with remaining balances written off upon customer termination. Certain contracts and related customer relationships result from purchasing residential security monitoring contracts from an external network of independent dealers who operate under the ADT dealer program, primarily outside of North America. Acquired contracts and related customer relationships are recorded at their contractually determined purchase price. During the first 6 months (12 months in certain circumstances) after the purchase of the customer contract, any cancellation of monitoring service, including those that result from customer payment delinquencies, results in a chargeback by the Company to the dealer for the full amount of the contract purchase price. The Company records the amount charged back to the dealer as a reduction of the previously recorded intangible asset.
Research and Development Costs	Research and Development Costs Expenditures for research activities relating to product development and improvement are charged against income as incurred and included within selling, general and administrative expenses in the consolidated statements of income. Such expenditures for the years ended September 30, 2023, 2022 and 2021 were $320 million, $295 million and $275 million, respectively.
Stock-Based Compensation	Stock-Based Compensation Restricted (Non-vested) Stock /Units Restricted stock and restricted stock units are typically settled in shares for employees in the U.S. and in cash for employees not in the U.S. Restricted awards typically vest over a period of three years from the grant date. The Company's Compensation and Talent Development Committee may approve different vesting terms on specific grants. The fair value of each share-settled restricted award is based on the closing market value of the Company’s ordinary shares on the date of grant. The fair value of each cash-settled restricted award is recalculated at the end of each reporting period based on the closing market value of the Company's ordinary shares at the end of the reporting period, and the liability and expense are adjusted based on the new fair value. Performance Share Awards Performance-based share unit ("PSU") awards are generally contingent on the achievement of predetermined performance goals over a performance period of one Upon completion of the performance period, earned PSUs are typically settled with shares of the Company's ordinary shares for employees in the U.S. and in cash for employees not in the U.S. The fair value of the portion of the PSU which is linked to the achievement of performance goals is based on the closing market value of the Company's ordinary shares on the date of grant. Share-based compensation expense for these PSUs is recognized over the performance period based on the probability of achieving the performance targets. The fair value of the portion of the PSU that is indexed to total shareholder return is estimated on the date of grant using a Monte Carlo simulation that uses the following assumptions: • The risk-free interest rate for periods during the contractual life of the PSU is based on the U.S. Treasury yield curve in effect at the time of grant. • The expected volatility is based on the historical volatility of the Company's stock over the most recent three-year period as of the grant date. Share-based compensation expense for PSUs which are indexed to total shareholder return is not adjusted for changes in performance subsequent to the grant date because the likelihood of achieving the market condition is incorporated in the grant date fair value of the award. Stock Options Stock options are granted with an exercise price equal to the market price of the Company’s stock at the date of grant. Stock option awards typically vest between two The fair value of each option is estimated on the date of grant using a Black-Scholes option valuation model that uses the following assumptions: • The expected life of options represents the period of time that options granted are expected to be outstanding. • The risk-free interest rate for periods during the contractual life of the option is based on the U.S. Treasury yield curve in effect at the time of grant. • For grants in fiscal 2023, expected volatility is based on the historical volatility of the Company's stock corresponding to the expected life as of the grant date. For grants in fiscal 2022 and fiscal 2021, expected volatility is based on the historical volatility of the Company's stock since October 2016 and certain peer companies' stock prior to October 2016 over the most recent period corresponding to the expected life as of the grant date. • The expected dividend yield is based on the expected annual dividend as a percentage of the market value of the Company’s ordinary shares as of the grant date. The Company uses historical data to estimate option exercises and employee terminations within the valuation model.
Earnings Per Share	Earnings Per Share
Foreign Currency Translation	Foreign Currency Translation Substantially all of the Company’s international operations use the respective local currency as the functional currency. Assets and liabilities of international entities have been translated at period-end exchange rates, and income and expenses have been translated using average exchange rates for the period. Monetary assets and liabilities denominated in non-functional currencies are adjusted to reflect period-end exchange rates. Aggregate transaction gains, net of the impact of foreign currency hedges, for the years ended September 30, 2023, 2022 and 2021 were $28 million, $49 million and $56 million, respectively.
Derivative Financial Instruments	Derivative Financial Instruments The Company has written policies and procedures that place all derivative financial instruments under the direction of Corporate treasury and restrict all derivative transactions to those intended for hedging purposes. The use of derivatives for speculative purposes is strictly prohibited. The Company selectively uses derivatives to manage the market risk from changes in foreign exchange rates, commodity prices, stock-based compensation liabilities and interest rates.
Investments	Investments
Pension and Postretirement Benefits	Pension and Postretirement Benefits
Guarantees	Guarantees The Company records an estimate for future warranty-related costs based on actual historical return rates and other known factors. Based on analysis of return rates and other factors, the Company’s warranty provisions are adjusted as necessary. The Company monitors its warranty activity and adjusts its reserve estimates when it is probable that future warranty costs will be different than those estimates.
Loss Contingencies	Loss Contingencies Accruals are recorded for various contingencies including legal proceedings, environmental matters, self-insurance and other claims that arise in the normal course of business when it is probable a liability has been incurred and the amount of the liability is reasonably estimable. The accruals are based on judgment, the probability of losses and, where applicable, the consideration of opinions of internal and/or external legal counsel and actuarial determined estimates. Additionally, the Company records receivables from third party insurers when recovery has been determined to be probable. The Company is subject to laws and regulations relating to protecting the environment. Expenses associated with environmental remediation obligations are recognized when such amounts are probable and can be reasonably estimated. Liabilities and expenses for workers' compensation, product, general and auto liabilities is dependent on claims experience. For most of these liabilities, claims incurred but not yet reported are estimated by utilizing actuarial valuations based upon historical claims experience. Receivables from third party insurers are recorded when recovery has been determined to be probable. The Company maintains captive insurance companies to manage its insurable liabilities. Asbestos-Related Contingencies and Insurance Receivables The Company and certain of its subsidiaries, along with numerous other companies, are named as defendants in personal injury lawsuits based on alleged exposure to asbestos-containing materials. The estimated liability and corresponding insurance recovery for pending and future claims and defense costs is based on the Company's historical claim experience, and estimates of the number and resolution cost of potential future claims that may be filed and is discounted to present value from 2068 (which is the Company's reasonable best estimate of the actuarial determined time period through which asbestos-related claims will be filed against its affiliates). Estimated asbestos-related defense costs are included in the asbestos liability. The Company's legal strategy for resolving claims also impacts these estimates. The Company considers various trends and developments in evaluating the period of time (the look-back period) over which historical claim and settlement experience is used to estimate and value claims reasonably projected to be made through 2068. At least annually, the Company assesses the sufficiency of its estimated liability for pending and future claims and defense costs by evaluating actual experience regarding claims filed, settled and dismissed, and amounts paid in settlements. In addition to claims and settlement experience, the Company considers additional quantitative and qualitative factors such as changes in legislation, the legal environment, and the Company's defense strategy. The Company also evaluates the recoverability of its insurance receivable on an annual basis. The Company evaluates all of these factors and determines whether a change in the estimate of its liability for pending and future claims and defense costs or insurance receivable is warranted.
Income Taxes	Income Taxes
Prior Period Revision - Statement of Cash Flows	Prior Period Revision – Statement of Cash Flows
New Accounting Pronouncements	New Accounting Pronouncements Recently Issued Accounting Pronouncements In September 2022, the FASB issued ASU 2022-04, "Disclosure of Supplier Finance Program Obligations", which is intended to enhance the transparency surrounding the use of supplier finance programs. Supplier finance programs may also be referred to as reverse factoring, payables finance, or structured payables arrangements. The amendments require a buyer that uses supplier finance programs to make annual disclosures about the program’s key terms, the balance sheet presentation of related amounts, the confirmed amount outstanding at the end of the period, and associated rollforward information. Only the amount outstanding at the end of the period must be disclosed in interim periods. The Company expects to adopt the new disclosures, other than the rollforward disclosure, as required at the beginning of fiscal 2024. The rollforward disclosures will be adopted as required at the beginning of fiscal 2025. Other recently issued accounting pronouncements are not expected to have a material impact on the Company's consolidated financial statements.

Acquisitions and Divestitures (

Acquisitions and Divestitures (Tables)	12 Months Ended
Acquisitions and Divestitures (Tables)	Sep. 30, 2023
Business Combination and Asset Acquisition [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The preliminary fair values of the assets acquired and liabilities assumed related to FM:Systems are as follows (in millions): Cash and cash equivalents $ 8 Accounts receivable 15 All other current assets 9 Goodwill 399 Intangible assets 194 All other noncurrent assets 7 Total assets acquired 632 Deferred revenue 24 All other current liabilities 49 Other noncurrent liabilities 11 Total liabilities acquired 84 Net assets acquired $ 548
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination	The purchase price allocation to identifiable intangible assets acquired is as follows: Fair Value Weighted Average Life (in years) Customer relationships $ 117 10 Technology 74 10 Trademarks and other definite-lived intangibles 3 4 Total identifiable intangible assets $ 194

Assets and Liabilities Held F_2

Assets and Liabilities Held For Sale and Discontinued Operations (Tables)	12 Months Ended
	Sep. 30, 2023
Discontinued Operations and Disposal Groups [Abstract]
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures	The following table summarizes impairment charges for the various assets held for sale (in millions): Year Ended September 30, 2023 2022 Global Retail business $ 438 $ 359 Business in the Building Solutions Asia Pacific segment 60 60 Certain assets in the Building Solution Asia Pacific segment — 45

Revenue Recognition (Tables)

Revenue Recognition (Tables)	12 Months Ended
Revenue Recognition (Tables)	Sep. 30, 2023
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table presents the Company's revenues disaggregated by segment and by products and systems versus services revenue (in millions): Year Ended September 30, 2023 2022 Products & Systems Services Total Products & Systems Services Total Building Solutions North America $ 6,368 $ 3,962 $ 10,330 $ 5,708 $ 3,659 $ 9,367 Building Solutions EMEA/LA 2,275 1,821 4,096 2,188 1,657 3,845 Building Solutions Asia Pacific 1,987 759 2,746 2,005 709 2,714 Global Products 9,621 — 9,621 9,373 — 9,373 Total $ 20,251 $ 6,542 $ 26,793 $ 19,274 $ 6,025 $ 25,299 The following table presents further disaggregation of Global Products revenues by product type (in millions): Year Ended September 30, 2023 2022 HVAC $ 6,820 $ 6,756 Fire & Security 2,446 2,367 Industrial Refrigeration 355 250 Total $ 9,621 $ 9,373
Contract with Customer, Asset and Liability	The following table presents the location and amount of contract balances in the Company's consolidated statements of financial position (in millions): September 30, Location of contract balances 2023 2022 Contract assets - current Accounts receivable - net $ 2,370 $ 2,067 Contract assets - noncurrent Other noncurrent assets 12 79 Contract liabilities - current Deferred revenue 1,996 1,804 Contract liabilities - noncurrent Other noncurrent liabilities 297 282
Capitalized Contract Cost	The following table presents the location and amount of costs to obtain or fulfill a contract recorded in the Company's consolidated statements of financial position (in millions): September 30, 2023 2022 Other current assets $ 156 $ 139 Other noncurrent assets 224 174 Total $ 380 $ 313

Inventories (Tables)

Inventories (Tables)	12 Months Ended
Inventories (Tables)	Sep. 30, 2023
Inventory Disclosure [Abstract]
Inventories	Inventories consisted of the following (in millions): September 30, 2023 2022 Raw materials and supplies $ 1,203 $ 1,040 Work-in-process 226 203 Finished goods 1,347 1,422 Inventories $ 2,776 $ 2,665

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
Property, Plant and Equipment (Tables)	Sep. 30, 2023
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, plant and equipment consisted of the following (in millions): September 30, 2023 2022 Buildings and improvements $ 1,337 $ 1,320 Subscriber systems 823 762 Machinery and equipment 4,227 3,745 Construction in progress 540 514 Land 194 197 Total property, plant and equipment 7,121 6,538 Less: Accumulated depreciation (3,985) (3,407) Property, plant and equipment - net $ 3,136 $ 3,131

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
Goodwill and Other Intangible Assets (Tables)	Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in Carrying Amount of Goodwill	The changes in the carrying amount of goodwill in each of the Company’s reportable segments were as follows (in millions): Year Ended September 30, 2023 Building Solutions North America Building Solutions EMEA/LA Building Solutions Asia Pacific Global Products Total Goodwill $ 9,630 $ 1,794 $ 1,116 $ 5,591 18,131 Accumulated impairment loss (659) (47) — (75) (781) Balance at beginning of period 8,971 1,747 1,116 5,516 17,350 Acquisitions (1) 399 13 55 119 586 Impairments — — — (184) (184) Foreign currency translation and other 11 125 8 40 184 Balance at end of period $ 9,381 $ 1,885 $ 1,179 $ 5,491 $ 17,936 Year Ended September 30, 2022 Building Solutions North America Building Solutions EMEA/LA Building Solutions Asia Pacific Global Products Total Goodwill $ 9,639 $ 2,088 $ 1,237 $ 5,842 18,806 Accumulated impairment loss (424) (47) — — (471) Balance at beginning of period 9,215 2,041 1,237 5,842 18,335 Acquisitions (1) 37 78 44 60 219 Divestitures — (5) (14) — (19) Impairments (235) — — (75) (310) Foreign currency translation and other (46) (367) (151) (311) (875) Balance at end of period $ 8,971 $ 1,747 $ 1,116 $ 5,516 $ 17,350 (1) Includes measurement period adjustments
Other Intangible Assets	The Company’s other intangible assets, primarily from business acquisitions, consisted of (in millions): September 30, 2023 2022 Gross Accumulated Net Gross Accumulated Net Definite-lived intangible assets Technology $ 1,575 $ (806) $ 769 $ 1,481 $ (728) $ 753 Customer relationships 3,047 (1,496) 1,551 3,011 (1,340) 1,671 Miscellaneous 889 (435) 454 949 (425) 524 5,511 (2,737) 2,774 5,441 (2,493) 2,948 Indefinite-lived intangible assets Trademarks/tradenames 2,114 — 2,114 2,207 — 2,207 Total intangible assets $ 7,625 $ (2,737) $ 4,888 $ 7,648 $ (2,493) $ 5,155
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	The following table summarizes the expected amortization of definite-lived intangible assets, excluding the impact of future acquisitions, by year (in millions): 2024 $ 508 2025 479 2026 410 2027 365 2028 252

Leases (Tables)

Leases (Tables)	12 Months Ended
Leases (Tables)	Sep. 30, 2023
Leases [Abstract]
Lease, Cost	The following table presents the Company’s lease costs (in millions): Year Ended September 30, 2023 2022 2021 Operating lease cost $ 384 $ 352 $ 384 Variable lease cost 165 165 130 Total lease costs $ 549 $ 517 $ 514 The following table presents supplemental cash flow information related to operating leases (in millions): Year Ended September 30, 2023 2022 2021 Cash paid for amounts included in the measurement of lease liability: Operating cash outflows from operating leases $ 373 $ 367 $ 398 Noncash operating lease activity: Right-of-use assets obtained in exchange for operating lease liabilities 427 369 515
Supplemental Balance Sheet Information, Leases	The following table presents supplemental consolidated statement of financial position information (in millions): September 30, Location of lease balances 2023 2022 Operating lease right-of-use assets Other noncurrent assets $ 1,389 $ 1,271 Operating lease liabilities - current Other current liabilities 318 280 Operating lease liabilities - noncurrent Other noncurrent liabilities 1,086 987 Weighted-average remaining lease term 7 years 7 years Weighted-average discount rate 3.5 % 2.1 %
Future Minimum Rental Payments for Operating Lease Liabilities	The following table presents future minimum rental payments for operating lease liabilities as of September 30, 2023 (in millions): 2024 $ 358 2025 300 2026 227 2027 171 2028 123 After 2028 404 Total operating lease payments 1,583 Less: Interest (179) Present value of lease payments $ 1,404

Debt and Financing Arrangemen_2

Debt and Financing Arrangements (Tables)	12 Months Ended
Debt and Financing Arrangements (Tables)	Sep. 30, 2023
Debt Disclosure [Abstract]
Short-Term Debt	Short-term debt consisted of the following (in millions): September 30, 2023 2022 Bank borrowings $ 26 $ 10 Commercial paper 200 172 Term loans 159 487 $ 385 $ 669 Weighted average interest rate on short-term debt outstanding 5.1 % 0.5 %
Long-Term Debt	Long-term debt consisted of the following (in millions; due dates by fiscal year): Carrying Value Issuer Interest Rate Due Date Par Value September 30, 2023 September 30, 2022 JCI plc 4.625% 2023 $ 25 $ — $ 25 TIFSA 1 4.625% 2023 $ 7 — 7 JCI plc 1.00% 2023 € 846 — 830 JCI plc 3.625% 2024 $ 453 453 453 JCI Inc. 3.625% 2024 $ 31 31 31 JCI plc EURIBOR plus 0.70% 2024 € 150 159 — JCI plc 1.375% 2025 € 423 450 419 TIFSA 1 1.375% 2025 € 54 57 53 JCI plc 3.90% 2026 $ 487 499 505 TIFSA 1 3.90% 2026 $ 51 50 51 JCI plc TORF plus 0.40% 2027 ¥ 30,000 202 208 JCI plc and TFSCA 2 0.375% 2027 € 500 528 488 JCI plc and TFSCA 2 3.00% 2028 € 600 634 586 JCI plc and TFSCA 2 1.75% 2030 $ 625 624 623 JCI plc and TFSCA 2 2.00% 2031 $ 500 497 496 JCI plc and TFSCA 2 1.00% 2032 € 500 529 489 JCI plc and TFSCA 2 4.90% 2032 $ 400 394 394 JCI plc and TFSCA 2 4.25% 2035 € 800 839 — JCI plc 6.00% 2036 $ 342 339 339 JCI Inc. 6.00% 2036 $ 8 8 8 JCI plc 5.70% 2041 $ 190 189 189 JCI Inc. 5.70% 2041 $ 30 30 30 JCI plc 5.25% 2042 $ 155 155 155 JCI Inc. 5.25% 2042 $ 6 6 6 JCI plc 4.625% 2044 $ 444 442 441 JCI Inc. 4.625% 2044 $ 6 6 6 JCI plc 5.125% 2045 $ 477 431 557 TIFSA 1 5.125% 2045 $ 23 23 23 JCI plc 6.95% 2046 $ 32 32 32 JCI Inc. 6.95% 2046 $ 4 4 4 JCI plc 4.50% 2047 $ 500 496 496 JCI plc 4.95% 2064 $ 341 340 340 JCI Inc. 4.95% 2064 $ 15 15 15 Other 36 25 Gross long-term debt 8,498 8,324 Less: current portion 645 865 Less: debt issuance costs 35 33 Long-term debt $ 7,818 $ 7,426 1 TIFSA = Tyco International Finance S.A. 2 TFSCA = Tyco Fire & Security Finance S.C.A.
Schedule of Maturities of Long-term Debt	The following table presents maturities of long-term debt as of September 30, 2023 (in millions): 2024 $ 646 2025 508 2026 550 2027 731 2028 634 After 2028 5,429 Total $ 8,498

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities (Tables)	12 Months Ended
Derivative Instruments and Hedging Activities (Tables)	Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Outstanding Commodity Hedge Contracts	The Company had the following outstanding contracts to hedge forecasted commodity purchases (in metric tons): Volume Outstanding as of September 30, Commodity 2023 2022 Copper 2,812 3,629 Aluminum 5,976 6,758
Schedule of Interest Rate Derivatives	The following table summarizes forward-starting interest rate swaps and the related anticipated note issuances (in millions): Year Ended September 30, 2023 2022 US dollar denominated Forward-starting interest swaps $ 600 $ 300 Anticipated note issuance 800 400 Euro denominated Forward-starting interest swap € 400 € 200 Anticipated note issuance 800 600
Schedule of Notional Amounts of Outstanding Derivative Positions	The following table summarizes net investment hedges (in billions): September 30, 2023 2022 Euro-denominated bonds designated as net investment hedges in Europe € 2.9 € 2.9 Yen-denominated debt designated as a net investment hedge in Japan ¥ 30 ¥ 30 US dollar vs. Yen cross-currency interest rate swap designated as a net investment hedge in Japan ¥ 14 ¥ —
Location and Fair Values of Derivative Instruments and Hedging Activities	The following table presents the location and fair values of derivative instruments and hedging activities included in the Company’s consolidated statements of financial position (in millions): Designated Not Designated September 30, 2023 September 30, 2022 September 30, 2023 September 30, 2022 Other current assets Foreign currency exchange derivatives $ 16 $ 30 $ 13 $ 24 Interest rate swaps 22 — — — Other noncurrent assets Cross-currency interest rate swap 5 — — — Total assets $ 43 $ 30 $ 13 $ 24 Other current liabilities Foreign currency exchange derivatives $ 20 $ 24 $ 5 $ 27 Commodity derivatives 2 10 — — Long-term debt Foreign currency denominated debt 3,253 3,077 — — Total liabilities $ 3,275 $ 3,111 $ 5 $ 27
Derivative Assets and Liabilities, Eligible for Offsetting	The gross and net amounts of derivative assets liabilities Fair Value of Assets Fair Value of Liabilities September 30, 2023 September 30, 2022 September 30, 2023 September 30, 2022 Gross amount recognized $ 56 $ 54 $ 3,280 $ 3,138 Gross amount eligible for offsetting (19) (42) (19) (42) Net amount $ 37 $ 12 $ 3,261 $ 3,096
Location and Amount of Gains and Losses Gross of Tax on Derivative Instruments and Related Hedge Items	The following table presents the pre-tax gains (losses) recorded in other comprehensive income (loss) related to cash flow hedges (in millions): Derivatives in Cash Flow Hedging Relationships Year Ended September 30, 2023 2022 2021 Foreign currency exchange derivatives $ (13) $ 26 $ 15 Commodity derivatives 1 (21) 4 Interest rate swaps 27 16 (21) Total $ 15 $ 21 $ (2) The following table presents the location and amount of the pre-tax gains (losses) on cash flow hedges reclassified from AOCI into the Company’s consolidated statements of income (in millions): Derivatives in Cash Flow Location of Gain (Loss) Year Ended September 30, 2023 2022 2021 Foreign currency exchange derivatives Cost of sales $ (4) $ 25 $ 11 Commodity derivatives Cost of sales (8) (7) 3 Interest rate swaps Net financing charges — (2) — Total $ (12) $ 16 $ 14 The following table presents the location and amount of pre-tax gains (losses) on derivatives not designated as hedging instruments recognized in the Company’s consolidated statements of income (in millions): Derivatives Not Designated as Hedging Instruments Location of Gain (Loss) Year Ended September 30, 2023 2022 2021 Foreign currency exchange derivatives Cost of sales $ (16) $ 10 $ (6) Foreign currency exchange derivatives Net financing charges (103) 85 174 Foreign currency exchange derivatives Selling, general and administrative — — (2) Foreign currency exchange derivatives Income tax provision — — (1) Interest rate swaps Net financing charges 1 — — Equity swap Selling, general and administrative — (5) 28 Total $ (118) $ 90 $ 193

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
Fair Value Measurements (Tables)	Sep. 30, 2023
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value	The following tables present the Company’s fair value hierarchy for those assets and liabilities measured at fair value (in millions): Fair Value Measurements Using: Total as of September 30, 2023 Quoted Prices Significant Significant Other current assets Foreign currency exchange derivatives $ 29 $ — $ 29 $ — Interest rate swaps 22 — 22 — Other noncurrent assets Cross-currency interest rate swap 5 — 5 — Deferred compensation plan assets 45 45 — — Exchange traded funds (fixed income) 1 76 76 — — Exchange traded funds (equity) 1 155 155 — — Total assets $ 332 $ 276 $ 56 $ — Other current liabilities Foreign currency exchange derivatives $ 25 $ — $ 25 $ — Commodity derivatives 2 — 2 — Contingent earn-out liabilities 48 — — 48 Other noncurrent liabilities Contingent earn-out liabilities 76 — — 76 Total liabilities $ 151 $ — $ 27 $ 124 Fair Value Measurements Using: Total as of September 30, 2022 Quoted Prices Significant Significant Other current assets Foreign currency exchange derivatives $ 54 $ — $ 54 $ — Exchange traded funds (fixed income) 1 22 22 — — Other noncurrent assets Deferred compensation plan assets 46 46 — — Exchange traded funds (fixed income) 1 86 86 — — Exchange traded funds (equity) 1 131 131 — — Total assets $ 339 $ 285 $ 54 $ — Other current liabilities Foreign currency exchange derivatives $ 51 $ — $ 51 $ — Commodity derivatives 10 — 10 — Contingent earn-out liabilities 30 — — 30 Other noncurrent liabilities Contingent earn-out liabilities 30 — — 30 Total liabilities $ 121 $ — $ 61 $ 60 1 Classified as restricted investments for payment of asbestos liabilities. Refer to Note 21, "Commitments and Contingencies" of the notes to consolidated financial statements for further details.
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation	The following table summarizes the changes in contingent earn-out liabilities, which are valued using significant unobservable inputs (Level 3) (in millions): Balance at September 30, 2022 $ 60 Acquisitions 112 Payments (10) Reduction for change in estimates (39) Currency translation 1 Balance at September 30, 2023 $ 124
Debt Securities, Trading, and Equity Securities, FV-NI	The following table presents the portion of unrealized gains (losses) recognized in the consolidated statements of income that relate to equity securities still held at September 30, 2023 and 2022 (in millions): Year Ended 2023 2022 Deferred compensation plan assets $ 5 $ (10) Investments in exchange traded funds 24 (55)
Fair Value of Long-Term Debt	The fair value of long-term debt at September 30, 2023 and 2022 was as follows (in billions): Year Ended 2023 2022 Public debt $ 7.1 $ 7.1 Other long-term debt 0.4 0.2 Total fair value of long-term debt $ 7.5 $ 7.3

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
Stock-Based Compensation (Tables)	Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount	The following table summarizes stock-based compensation related charges and benefits (in millions): Year Ended September 30, 2023 2022 2021 Compensation expense $ 101 $ 104 $ 97 Income tax benefit resulting from share-based compensation arrangements 25 26 24 Tax impact from exercise and vesting of equity settled awards 7 12 12
Summary of Nonvested Restricted Stock Awards	A summary of non-vested restricted stock awards at September 30, 2023, and changes for the year then ended, is presented below: Weighted Shares/Units Non-vested, September 30, 2022 $ 58.78 2,949,194 Granted 65.72 2,010,495 Vested 53.55 (1,487,685) Forfeited 64.14 (664,891) Non-vested, September 30, 2023 $ 64.90 2,807,113
Schedule of Share-Based Payment Award, Performance Share, Valuation Assumptions	The following table summarizes the assumptions used in determining the fair value of stock options granted: Year Ended September 30, 2023 2022 2021 Risk-free interest rate 4.04% 0.99% 0.20% Expected volatility of the Company’s stock 33.50% 30.00% 30.90%
Summary of Nonvested PSUs	A summary of the status of the Company’s non-vested PSU's at September 30, 2023, and changes for the year then ended, is presented below: Weighted Shares/Units Non-vested, September 30, 2022 $ 60.30 1,143,071 Granted 79.45 344,029 Vested 43.19 (361,117) Forfeited 71.18 (258,459) Non-vested, September 30, 2023 $ 71.77 867,524
Assumptions Used in Black-Scholes Option Valuation Model	The following table summarizes the assumptions used in determining the fair value of stock options granted: Year Ended September 30, 2023 2022 2021 Expected life of option (years) 5.8 6.0 6.5 Risk-free interest rate 3.59% 1.35% 0.60% Expected volatility of the Company’s stock 29.40% 27.80% 27.60% Expected dividend yield on the Company’s stock 2.10% 1.71% 2.28%
Summary of Stock Option Activity	A summary of stock option activity at September 30, 2023, and changes for the year then ended, is presented below: Weighted Shares Weighted Aggregate Outstanding, September 30, 2022 $ 42.46 5,683,847 Granted 66.77 570,140 Exercised 38.17 (1,068,612) Forfeited or expired 59.31 (265,459) Outstanding, September 30, 2023 $ 45.44 4,919,916 5.75 $ 56 Exercisable, September 30, 2023 $ 39.11 3,762,092 3.83 $ 53 The following table summarizes additional stock option information: Year Ended September 30, 2023 2022 2021 Weighted-average grant-date fair value of options granted $ 18.21 $ 18.59 $ 9.36 Intrinsic value of options exercised (in millions) 27 19 94

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
Earnings Per Share (Tables)	Sep. 30, 2023
Earnings Per Share [Abstract]
Earnings Per Share	The following table reconciles the numerators and denominators used to calculate basic and diluted earnings per share (in millions): Year Ended September 30, 2023 2022 2021 Income Available to Ordinary Shareholders Income from continuing operations $ 1,849 $ 1,532 $ 1,513 Income from discontinued operations — — 124 Basic and diluted income available to shareholders $ 1,849 $ 1,532 $ 1,637 Weighted Average Shares Outstanding Basic weighted average shares outstanding 684.3 696.1 716.6 Effect of dilutive securities: Stock options, unvested restricted stock and unvested 3.1 3.5 4.5 Diluted weighted average shares outstanding 687.4 699.6 721.1 Antidilutive Securities Stock options and unvested restricted stock 0.2 0.4 —

Equity (Tables)

Equity (Tables)	12 Months Ended
Equity (Tables)	Sep. 30, 2023
Stockholders' Equity Note [Abstract]
Changes in Accumulated Other Comprehensive Income, net of tax	The following table includes changes in AOCI attributable to Johnson Controls (in millions, net of tax): Year Ended September 30, 2023 2022 2021 Foreign currency translation adjustments Balance at beginning of period $ (901) $ (421) $ (778) Aggregate adjustment for the period (69) (480) 357 Balance at end of period (970) (901) (421) Realized and unrealized gains (losses) on derivatives Balance at beginning of period (11) (17) 2 Current period changes in fair value 19 20 (3) Reclassification to income (1) 11 (16) (14) Net tax impact (4) 2 (2) Balance at end of period 15 (11) (17) Pension and postretirement plans Balance at beginning of period 1 4 — Reclassification to income (1) (3) (3) Other changes — — 8 Net tax impact — — (1) Balance at end of period — 1 4 Accumulated other comprehensive loss, end of period $ (955) $ (911) $ (434) (1)

Retirement Plans (Tables)

Retirement Plans (Tables)	12 Months Ended
Retirement Plans (Tables)	Sep. 30, 2023
Retirement Benefits [Abstract]
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets	The following table includes information for pension plans with accumulated benefit obligations ("ABO") in excess of plan assets (in millions): September 30, 2023 2022 Accumulated benefit obligation $ 1,834 $ 2,004 Fair value of plan assets 1,618 1,720
Defined Benefit Plan, Plan with Projected Benefit Obligation in Excess of Plan Assets	The following table includes information for pension plans with projected benefit obligations ("PBO") in excess of plan assets (in millions): September 30, 2023 2022 Projected benefit obligation $ 1,846 $ 2,013 Fair value of plan assets 1,633 1,729
Projected Benefit Payments from Plans	Projected benefit payments from the plans as of September 30, 2023 are estimated as follows (in millions): 2024 $ 277 2025 235 2026 235 2027 233 2028 172 2029 - 2033 1,160 Projected benefit payments from the plans as of September 30, 2023 are estimated as follows (in millions): 2024 $ 10 2025 10 2026 9 2027 9 2028 7 2029 - 2033 27
Accumulated Postretirement Benefit Obligations in Excess of Plan Assets	The following table includes information for postretirement plans with accumulated postretirement benefit obligations ("APBO") in excess of plan assets (in millions): September 30, 2023 2022 Accumulated postretirement benefit obligation $ 58 $ 68 Fair value of plan assets 24 28
Plan Assets by Asset Category	The Company’s plan assets at September 30, 2023 and 2022, by asset category, are as follows (in millions): Fair Value Measurements Using: Asset Category Total as of September 30, 2023 Quoted Prices Significant Significant U.S. Pension Cash and Cash Equivalents $ 61 $ — $ 61 $ — Equity Securities Large-Cap 60 60 — — Small-Cap 65 65 — — International - Developed 108 108 — — International - Emerging 20 20 — — Fixed Income Securities Government 225 225 — — Corporate/Other 583 583 — — Alternative 211 — 211 — Total Investments in the Fair Value Hierarchy 1,333 $ 1,061 $ 272 $ — Real Estate Investments Measured at Net Asset Value (1) 295 Due to Broker (129) Total Plan Assets $ 1,499 Non-U.S. Pension Cash and Cash Equivalents $ 52 $ 52 $ — $ — Equity Securities Large-Cap 52 9 43 — International - Developed 52 12 40 — International - Emerging 2 — 2 — Fixed Income Securities Government 701 40 661 — Corporate/Other 415 271 144 — Hedge Fund 15 — 15 — Real Estate 9 9 — — Total Investments in the Fair Value Hierarchy 1,298 $ 393 $ 905 $ — Real Estate Investments Measured at Net Asset Value (1) 90 Total Plan Assets $ 1,388 Postretirement Cash and Cash Equivalents $ 8 $ 8 $ — $ — Equity Securities - Global 71 — 71 — Total Investments in the Fair Value Hierarchy 79 $ 8 $ 71 $ — Multi-Credit Strategy Investments Measured at Net Asset Value (1) 65 Total Plan Assets $ 144 Fair Value Measurements Using: Asset Category Total as of September 30, 2022 Quoted Prices Significant Significant U.S. Pension Cash and Cash Equivalents $ 40 $ — $ 40 $ — Equity Securities Large-Cap 160 160 — — Small-Cap 175 175 — — International - Developed 139 139 — — International - Emerging 39 39 — — Fixed Income Securities Government 217 216 1 — Corporate/Other 804 804 — — Total Investments in the Fair Value Hierarchy 1,574 $ 1,533 $ 41 $ — Real Estate Investments Measured at Net Asset Value (1) 322 Due to Broker (166) Total Plan Assets $ 1,730 Non-U.S. Pension Cash and Cash Equivalents $ 150 $ 150 $ — $ — Large-Cap 45 8 37 — International - Developed 43 12 31 — International - Emerging 3 — 3 — Fixed Income Securities Government 650 50 600 — Corporate/Other 418 277 141 — Hedge Fund 18 — 18 — Real Estate 9 9 — — Total Investments in the Fair Value Hierarchy 1,336 $ 506 $ 830 $ — Real Estate Investments Measured at Net Asset Value (1) 97 Total Plan Assets $ 1,433 Postretirement Cash and Cash Equivalents $ 13 $ 13 $ — $ — Equity Securities Global 66 — 66 — Total Investments in the Fair Value Hierarchy 79 13 66 — Multi-Credit Strategy Investments Measured at Net Asset Value (1) 65 Total Plan Assets $ 144 (1) The fair value of certain real estate and multi-credit strategy investments do not have a readily determinable fair value and require the fund managers to independently arrive at fair value by calculating net asset value ("NAV") per share. In order to calculate NAV per share, the fund managers value the investments using any one, or a combination of, the following methods: independent third party appraisals, discounted cash flow analysis of net cash flows projected to be generated by the investment and recent sales of comparable investments. Assumptions used to revalue the investments are updated every quarter. Due to the fact that the fund managers calculate NAV per share, the Company utilizes a practical expedient for measuring the fair value of its real estate and multi-credit strategy investments, as provided for under ASC 820, "Fair Value Measurement." In applying the
Accumulated Benefit Obligations and Reconciliations of Changes in Projected Benefit Obligation, Changes in Plan Assets and Funded Status	The following table contains the ABO and reconciliations of the changes in the PBO, the changes in plan assets and the funded status (in millions): Pension Benefits Postretirement U.S. Plans Non-U.S. Plans September 30, 2023 2022 2023 2022 2023 2022 Accumulated Benefit Obligation $ 1,564 $ 1,822 $ 1,424 $ 1,417 $ 76 $ 89 Change in Projected Benefit Obligation Projected benefit obligation at beginning of year $ 1,822 $ 2,629 $ 1,471 $ 2,625 $ 89 $ 123 Service cost — — 16 20 — 1 Interest cost 78 56 68 39 4 2 Plan participant contributions — — 3 2 3 3 Actuarial gain (37) (587) (62) (651) (7) (25) Benefits and settlements paid (299) (276) (126) (166) (12) (14) Other — — (3) (3) — — Currency translation adjustment — — 106 (395) — (1) Projected benefit obligation at end of year $ 1,564 $ 1,822 $ 1,473 $ 1,471 $ 77 $ 89 Change in Plan Assets Fair value of plan assets at beginning of year $ 1,730 $ 2,459 $ 1,433 $ 2,344 $ 144 $ 172 Actual return on plan assets 66 (454) (77) (459) 7 (20) Employer and employee contributions 3 1 55 94 5 6 Benefits paid (85) (85) (61) (74) (12) (14) Settlement payments (215) (191) (65) (92) — — Other — — (2) (2) — — Currency translation adjustment — — 105 (378) — — Fair value of plan assets at end of year $ 1,499 $ 1,730 $ 1,388 $ 1,433 $ 144 $ 144 Funded status $ (65) $ (92) $ (85) $ (38) $ 67 $ 55 Amounts recognized in the statement of financial position consist of: Prepaid benefit cost $ 1 $ 37 $ 97 $ 151 $ 101 $ 95 Accrued benefit liability (66) (129) (182) (189) (34) (40) Net amount recognized $ (65) $ (92) $ (85) $ (38) $ 67 $ 55 Weighted Average Assumptions (1) Discount rate (2) 5.48 % 5.08 % 4.72 % 4.36 % 5.42 % 4.92 % Rate of compensation increase N/A N/A 2.90 % 3.00 % N/A N/A Interest crediting rate N/A N/A 1.63 % 1.69 % N/A N/A (1) Plan assets and obligations are determined based on a September 30 measurement date at September 30, 2023 and 2022. (2) The Company considers the expected benefit payments on a plan-by-plan basis when setting assumed discount rates. As a result, the Company uses different discount rates for each plan depending on the plan jurisdiction, the demographics of participants and the expected timing of benefit payments. For the U.S. pension and postretirement plans, the Company uses a discount rate provided by an independent third party calculated based on an appropriate mix of high quality bonds. For the non-U.S. pension and postretirement plans, the Company consistently uses the relevant country specific benchmark indices for determining the various discount rates. The Company has elected to utilize a full yield curve approach in the estimation of service and interest components of net periodic benefit cost (credit) for pension and other postretirement for plans that utilize a
Components of Net Periodic Benefit Cost	The following table contains the components of net periodic benefit costs, which are recorded in selling, general and administrative expenses Pension Benefits Postretirement Benefits U.S. Plans Non-U.S. Plans Year ended September 30, 2023 2022 2021 2023 2022 2021 2023 2022 2021 Components of Net Periodic Benefit Cost (Credit): Service cost $ — $ — $ — $ 16 $ 20 $ 27 $ — $ 1 $ 1 Interest cost 78 56 47 68 39 32 4 2 2 Expected return on plan assets (131) (150) (171) (77) (81) (112) (9) (9) (8) Net actuarial (gain) loss 28 16 (214) 86 (116) (115) (5) 4 (35) Settlement (gain) loss 1 1 — 6 5 (1) — — — Amortization of prior service cost (credit) — — — — — 1 (4) (4) (4) Other — — — — — (1) — — — Net periodic benefit cost (credit) included in continuing operations $ (24) $ (77) $ (338) $ 99 $ (133) $ (169) $ (14) $ (6) $ (44) Expense Assumptions: Discount rate 5.08 % 2.52 % 2.25 % 4.36 % 1.79 % 1.35 % 4.92 % 2.30 % 1.90 % Expected return on plan assets 8.25 % 7.00 % 6.90 % 5.02 % 3.70 % 4.90 % 6.64 % 5.29 % 5.30 % Rate of compensation increase N/A N/A N/A 3.00 % 2.85 % 2.75 % N/A N/A N/A Interest crediting rate N/A N/A N/A 1.69 % 1.44 % 1.50 % N/A N/A N/A

Restructuring and Related Cos_2

Restructuring and Related Costs (Tables)	12 Months Ended
Restructuring and Related Costs (Tables)	Sep. 30, 2023
Restructuring and Related Activities [Abstract]
Schedule of Restructuring Reserve by Type of Cost	The following table summarizes restructuring and related costs (in millions): Year Ended September 30, 2023 Building Solutions North America $ 43 Building Solutions EMEA/LA 97 Building Solutions Asia Pacific 18 Global Products 69 Corporate 49 Total $ 276 Employee Severance and Termination Benefits Long-Lived Asset Impairments Other Total Restructuring and related costs 204 38 34 276 Utilized—cash (111) — (19) (130) Utilized—noncash — (38) (3) (41) Balance at September 30, 2023 $ 93 $ — $ 12 $ 105

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Sep. 30, 2023
Income Tax Disclosure [Abstract]
Significant Components of Company's Income Tax Provision from Continuing Operations	The more significant components of the Company’s income tax provision from continuing operations are as follows (in millions): 2023 2022 2021 Tax expense at Ireland statutory rate of 12.5% $ 214 $ 214 $ 327 U.S. state income tax, net of federal benefit 39 (23) 34 Income subject to the U.S. federal tax rate 56 (95) 3 Income subject to rates different than the statutory rate 92 125 30 Reserve and valuation allowance adjustments (559) (274) 66 Intellectual property transactions and adjustments (176) — 417 Restructuring and impairment costs 11 40 (9) Income tax provision (benefit) $ (323) $ (13) $ 868 Effective tax rate (19) % (1)% 33%
Summary of Changes in Valuation Allowance	The following table summarizes changes in the valuation allowance (in millions): Year Ended September 30, 2023 2022 2021 Balance at beginning of period $ 5,973 $ 5,853 $ 5,518 Allowance provision for new operating and other loss carryforwards 573 325 505 Allowance benefits (168) (205) (170) Balance at end of period $ 6,378 $ 5,973 $ 5,853
Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in millions): 2023 2022 2021 Beginning balance, October 1 $ 2,537 $ 2,726 $ 2,528 Additions for tax positions related to the current year 72 169 240 Additions for tax positions of prior years 96 31 33 Reductions for tax positions of prior years (27) (48) (6) Settlements with taxing authorities (6) (7) (24) Statute closings and audit resolutions (446) (334) (45) Ending balance, September 30 $ 2,226 $ 2,537 $ 2,726
Summary of Income Tax Contingencies	The following table summarizes tax effected unrecognized tax benefits that, if recognized, would impact the effective tax rate and the related accrued interest, net of tax benefit (in millions): September 30, 2023 2022 2021 Tax effected unrecognized tax benefits that, if recognized, would affect the effective tax rate $ 1,581 $ 1,973 $ 2,268 Net accrued interest 335 284 252
Tax Jurisdictions and Years Currently under Audit Exam	In the U.S., fiscal years 2017 through 2018 are currently under appeal by the Internal Revenue Service (“IRS”) for certain legal entities. Additionally, the Company is currently under exam in the following major non-U.S. jurisdictions for continuing operations: Tax Jurisdiction Tax Years Covered Belgium 2015 - 2022 Germany 2007 - 2021 Luxembourg 2017 - 2018 Mexico 2015 - 2018 United Kingdom 2014 - 2015; 2018; 2020 - 2021
Components of Provision for Income Taxes on Continuing Operations	Selected income tax data related to continuing operations were as follows (in millions): 2023 2022 2021 Components of income (loss) from continuing operations before income taxes: U.S. $ (130) $ 67 $ 543 Non-U.S. 1,840 1,643 2,071 Income from continuing operations before income taxes $ 1,710 $ 1,710 $ 2,614 Components of the provision (benefit) for income taxes: Current U.S. federal $ (165) $ (219) $ 459 U.S. state 105 53 108 Non-U.S. 413 294 265 353 128 832 Deferred U.S. federal (267) (175) (7) U.S. state (25) (69) 46 Non-U.S. (384) 103 (3) (676) (141) 36 Income tax provision (benefit) $ (323) $ (13) $ 868 Income taxes paid $ 430 $ 568 $ 504
Deferred Taxes Classified in Consolidated Statements of Financial Position	Deferred taxes were classified in the consolidated statements of financial position as follows (in millions): September 30, 2023 2022 Other noncurrent assets $ 1,499 $ 954 Other noncurrent liabilities (411) (503) Net deferred tax asset $ 1,088 $ 451
Temporary Differences and Carryforwards in Deferred Tax Assets and Liabilities	Temporary differences and carryforwards which gave rise to deferred tax assets and liabilities included (in millions): September 30, 2023 2022 Deferred tax assets Accrued expenses and reserves $ 507 $ 376 Employee and retiree benefits 71 78 Property, plant and equipment 629 444 Net operating loss and other credit carryforwards 6,748 6,488 Research and development 171 52 Operating lease liabilities 348 309 Other, net 38 58 8,512 7,805 Valuation allowances (6,378) (5,973) 2,134 1,832 Deferred tax liabilities Subsidiaries, joint ventures and partnerships 446 338 Intangible assets 252 734 Operating lease right-of-use assets 348 309 1,046 1,381 Net deferred tax asset $ 1,088 $ 451

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
Segment Information (Tables)	Sep. 30, 2023
Segment Reporting [Abstract]
Financial Information Related To Company's Reportable Segments	Financial information relating to the Company’s reportable segments is as follows (in millions): Year Ended September 30, 2023 2022 2021 Net Sales Building Solutions North America $ 10,330 $ 9,367 $ 8,685 Building Solutions EMEA/LA 4,096 3,845 3,884 Building Solutions Asia Pacific 2,746 2,714 2,616 Global Products 9,621 9,373 8,483 Total net sales $ 26,793 $ 25,299 $ 23,668 Year Ended September 30, 2023 2022 2021 Segment EBITA (1) Building Solutions North America $ 1,394 $ 1,122 $ 1,204 Building Solutions EMEA/LA 316 358 401 Building Solutions Asia Pacific 343 332 344 Global Products 1,965 1,594 1,436 Total segment EBITA 4,018 3,406 3,385 Amortization of intangible assets (439) (427) (435) Corporate expenses (432) (369) (290) Net financing charges (281) (213) (206) Restructuring and impairment costs (1,064) (721) (242) Net mark-to-market adjustments (92) 34 402 Income from continuing operations before income taxes $ 1,710 $ 1,710 $ 2,614 September 30, 2023 2022 2021 Assets (2) Building Solutions North America $ 15,603 $ 15,226 $ 15,317 Building Solutions EMEA/LA 5,202 4,991 5,397 Building Solutions Asia Pacific 2,645 2,474 2,728 Global Products 15,406 15,185 15,227 38,856 37,876 38,669 Assets held for sale — 66 156 Unallocated 3,386 4,216 3,065 Total $ 42,242 $ 42,158 $ 41,890 Year Ended September 30, 2023 2022 2021 Depreciation/Amortization Building Solutions North America $ 225 $ 213 $ 245 Building Solutions EMEA/LA 101 96 103 Building Solutions Asia Pacific 23 21 25 Global Products 454 461 432 803 791 805 Corporate 45 39 40 Total $ 848 $ 830 $ 845 Year Ended September 30, 2023 2022 2021 Capital Expenditures Building Solutions North America $ 104 $ 141 $ 87 Building Solutions EMEA/LA 119 119 128 Building Solutions Asia Pacific 33 22 31 Global Products 233 257 265 489 539 511 Corporate 50 53 41 Total $ 539 $ 592 $ 552 (1) For the years ended September 30, 2023, 2022 and 2021, segment EBITA includes $262 million, $240 million and $250 million, respectively, of equity income for the Global Products segment. Equity income for other segments is immaterial. (2) Building Solutions EMEA/LA assets as of September 30, 2023, 2022 and 2021 include $130 million, $115 million and $111 million, respectively, of investments in partially-owned affiliates. Global Products assets as of September 30, 2023, 2022 and 2021 include $905 million, $834 million and $945 million, respectively, of investments in partially-owned affiliates. Investments in partially-owned affiliates for other segments are immaterial.
Geographic Segments	Financial information relating to the Company’s operations by geographic area is as follows (in millions): Year Ended September 30, 2023 2022 2021 Net Sales United States $ 13,989 $ 12,864 $ 11,577 Europe 4,882 4,186 4,069 Asia Pacific 5,610 5,791 5,748 Other Non-U.S. 2,312 2,458 2,274 Total $ 26,793 $ 25,299 $ 23,668 Long-Lived Assets (Year-end) United States $ 1,594 $ 1,582 $ 1,638 Europe 514 462 436 Asia Pacific 630 658 727 Other Non-U.S. 398 429 427 Total $ 3,136 $ 3,131 $ 3,228

Guarantees (Tables)

Guarantees (Tables)	12 Months Ended
Guarantees (Tables)	Sep. 30, 2023
Guarantees [Abstract]
Changes in Carrying Amount of Product Warranty Liability	The changes in the carrying amount of the Company’s total product warranty liability were as follows (in millions). Year Ended September 30, 2023 2022 Balance at beginning of period $ 180 $ 192 Accruals for warranties issued during the period 134 119 Settlements made (in cash or in kind) during the period (112) (114) Changes in estimates to pre-existing warranties 1 (6) Accruals from acquisitions and divestitures 1 — Currency translation (1) (11) Balance at end of period $ 203 $ 180

Commitment and Contingencies (T

Commitment and Contingencies (Tables)	12 Months Ended
Commitment and Contingencies (Tables)	Sep. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Schedule of Loss Contingencies by Contingency	The following table presents the location and amount of reserves for environmental liabilities in the Company's consolidated statements of financial position (in millions): September 30, 2023 2022 Other current liabilities $ 31 $ 66 Other noncurrent liabilities 211 220 Total reserves for environmental liabilities $ 242 $ 286 The following table presents the location and amount of asbestos-related assets and liabilities in the Company's consolidated statements of financial position (in millions): September 30, 2023 2022 Other current liabilities $ 58 $ 58 Other noncurrent liabilities 364 380 Total asbestos-related liabilities 422 438 Other current assets 28 37 Other noncurrent assets 273 263 Total asbestos-related assets 301 300 Net asbestos-related liabilities $ 121 $ 138 The following table presents the components of asbestos-related assets (in millions): September 30, 2023 2022 Restricted Cash $ 20 $ 6 Investments 231 239 Total restricted assets 251 245 Insurance receivables for asbestos-related liabilities 50 55 Total asbestos-related assets $ 301 $ 300 The following table presents the location and amount of insurable liabilities in the Company's consolidated statements of financial position (in millions): September 30, 2023 2022 Other current liabilities $ 86 $ 89 Accrued compensation and benefits 21 22 Other noncurrent liabilities 226 230 Total self-insured liabilities $ 333 $ 341 The following table presents the location and amount of insurable receivables in the Company's consolidated statements of financial position (in millions): September 30, 2023 2022 Other current assets $ 6 $ 10 Other noncurrent assets 14 20 Total insurance receivables $ 20 $ 30

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Details) $ in Millions	12 Months Ended
	Sep. 30, 2023 USD ($) country	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)
Financial Statement Details [Line Items]
Number of countries in which entity operates \| country	150
Interest percentage minimum for investments in partially owned affiliates to be accounted for by equity method	20%
Pooled subscriber assets and related deferred revenue, useful life	12 years
Non-pooled subscriber assets and related deferred revenue, useful life	15 years
Standard chargeback period from dealer for monitoring service cancellations	6 months
Non-standard chargeback period from dealer for monitoring service cancellations	12 months
Research and development expense	$ 320	$ 295	$ 275
Foreign currency transaction gains (losses)	$ 28	$ 49	$ 56
Restricted Stock
Financial Statement Details [Line Items]
Vesting period	3 years
Employee Stock Option
Financial Statement Details [Line Items]
Expiration period for stock options	10 years
Minimum
Financial Statement Details [Line Items]
Estimated useful life of dealer intangible assets	12 years
Minimum \| Performance Shares
Financial Statement Details [Line Items]
Vesting period	1 year
Minimum \| Employee Stock Option
Financial Statement Details [Line Items]
Vesting period	2 years
Maximum
Financial Statement Details [Line Items]
Estimated useful life of dealer intangible assets	15 years
Maximum \| Performance Shares
Financial Statement Details [Line Items]
Vesting period	3 years
Maximum \| Employee Stock Option
Financial Statement Details [Line Items]
Vesting period	3 years
Building And Improvements \| Minimum
Financial Statement Details [Line Items]
Estimated useful lives	3 years
Building And Improvements \| Maximum
Financial Statement Details [Line Items]
Estimated useful lives	40 years
Subscriber Systems \| Maximum
Financial Statement Details [Line Items]
Estimated useful lives	15 years
Machinery and Equipment \| Minimum
Financial Statement Details [Line Items]
Estimated useful lives	3 years
Machinery and Equipment \| Maximum
Financial Statement Details [Line Items]
Estimated useful lives	15 years

Acquisitions and Divestitures -

Acquisitions and Divestitures - Narrative (Details) - USD ($) $ in Millions	1 Months Ended		12 Months Ended
	Jul. 31, 2023	May 31, 2021	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Business Acquisitions
Payments to acquire businesses, net of cash acquired			$ 726	$ 269	$ 725
Goodwill			17,936	17,350	$ 18,335
Significant Unobservable Inputs (Level 3) \| Fair Value, Measurements, Recurring
Business Acquisitions
Reduction in fair value of contingent earn-out liability			39
FM:Systems
Business Acquisitions
Business combination, consideration transferred	$ 540
Payments to acquire businesses, net of cash acquired	465
Contingent earn-out liabilities	$ 75
Contingent earn-out period	2 years
Business combination, contingent consideration arrangements, range of outcomes, value, high	$ 155
Goodwill	$ 399
Silent-Aire
Business Acquisitions
Business combination, consideration transferred		$ 755
Payments to acquire businesses, net of cash acquired		661
Business combination, contingent consideration arrangements, range of outcomes, value, high		250
Business combination, working capital adjustment		8
Contingent earn-out liabilities		$ 86
Silent-Aire \| Significant Unobservable Inputs (Level 3) \| Fair Value, Measurements, Recurring
Business Acquisitions
Reduction in fair value of contingent earn-out liability			30	43
Series of Individually Immaterial Business Acquisitions
Business Acquisitions
Business combination, consideration transferred			306	323
Payments to acquire businesses, net of cash acquired			260	269
Goodwill				194
Business combination, recognized identifiable assets acquired and liabilities assumed, finite-lived intangibles			116	123
Building Solutions EMEA/LA \| Series of Individually Immaterial Business Acquisitions
Business Acquisitions
Goodwill			13	68
Global Products \| Series of Individually Immaterial Business Acquisitions
Business Acquisitions
Goodwill			119	45
Building Solutions Asia Pacific \| Series of Individually Immaterial Business Acquisitions
Business Acquisitions
Goodwill			$ 55	44
Building Solutions North America \| Series of Individually Immaterial Business Acquisitions
Business Acquisitions
Goodwill				$ 36

Acquisitions and Divestitures_2

Acquisitions and Divestitures - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Sep. 30, 2023	Jul. 31, 2023	Sep. 30, 2022	Sep. 30, 2021
Business Acquisitions
Goodwill	$ 17,936		$ 17,350	$ 18,335
FM:Systems
Business Acquisitions
Cash and cash equivalents		$ 8
Accounts receivable		15
All other current assets		9
Goodwill		399
Intangible assets		194
All other noncurrent assets		7
Total assets acquired		632
Deferred revenue		24
All other current liabilities		49
Other noncurrent liabilities		11
Total liabilities acquired		84
Net assets acquired		$ 548

Acquisitions and Divestitures_3

Acquisitions and Divestitures - Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination (Details) - FM:Systems $ in Millions	1 Months Ended
	Jul. 31, 2023 USD ($)
Business Acquisitions
Total identifiable intangible assets	$ 194
Trademarks and other definite-lived intangibles
Business Acquisitions
Total identifiable intangible assets	$ 3
Weighted Average Life	4 years
Customer relationships
Business Acquisitions
Total identifiable intangible assets	$ 117
Weighted Average Life	10 years
Technology
Business Acquisitions
Total identifiable intangible assets	$ 74
Weighted Average Life	10 years

Assets and Liabilities Held F_3

Assets and Liabilities Held For Sale and Discontinued Operations - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operations	$ 0	$ 0	$ 124
Building Solutions Asia Pacific
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Asset impairment charges	$ 0	$ 45
Power Solutions
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operations			124
Tax effect of discontinued operation			$ 26

Assets and Liabilities Held F_4

Assets and Liabilities Held For Sale and Discontinued Operations - Summary of Impairment Charges to Write Down Disposal Groups (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Global Products
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal group, not discontinued operation, loss (gain) on write-down	$ 438	$ 359
Building Solutions Asia Pacific
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal group, not discontinued operation, loss (gain) on write-down	60	60
Asset impairment charges	$ 0	$ 45

Revenue Recognition - Disaggreg

Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Total	$ 26,793	$ 25,299	$ 23,668
Building Solutions North America
Disaggregation of Revenue [Line Items]
Total	10,330	9,367
Building Solutions EMEA/LA
Disaggregation of Revenue [Line Items]
Total	4,096	3,845
Building Solutions Asia Pacific
Disaggregation of Revenue [Line Items]
Total	2,746	2,714
Global Products
Disaggregation of Revenue [Line Items]
Total	9,621	9,373
Products and systems
Disaggregation of Revenue [Line Items]
Total	20,251	19,274	17,202
Products and systems \| Building Solutions North America
Disaggregation of Revenue [Line Items]
Total	6,368	5,708
Products and systems \| Building Solutions EMEA/LA
Disaggregation of Revenue [Line Items]
Total	2,275	2,188
Products and systems \| Building Solutions Asia Pacific
Disaggregation of Revenue [Line Items]
Total	1,987	2,005
Products and systems \| Global Products
Disaggregation of Revenue [Line Items]
Total	9,621	9,373
HVAC \| Global Products
Disaggregation of Revenue [Line Items]
Total	6,820	6,756
Fire & Security \| Global Products
Disaggregation of Revenue [Line Items]
Total	2,446	2,367
Industrial Refrigeration \| Global Products
Disaggregation of Revenue [Line Items]
Total	355	250
Services
Disaggregation of Revenue [Line Items]
Total	6,542	6,025	$ 6,466
Services \| Building Solutions North America
Disaggregation of Revenue [Line Items]
Total	3,962	3,659
Services \| Building Solutions EMEA/LA
Disaggregation of Revenue [Line Items]
Total	1,821	1,657
Services \| Building Solutions Asia Pacific
Disaggregation of Revenue [Line Items]
Total	759	709
Services \| Global Products
Disaggregation of Revenue [Line Items]
Total	$ 0	$ 0

Revenue Recognition - Contract

Revenue Recognition - Contract with Customer, Asset and Liability (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Deferred revenue	$ 1,996	$ 1,804
Accounts receivable - net
Disaggregation of Revenue [Line Items]
Contract assets - current	2,370	2,067
Other noncurrent assets
Disaggregation of Revenue [Line Items]
Contract assets - noncurrent	12	79
Deferred revenue
Disaggregation of Revenue [Line Items]
Deferred revenue	1,996	1,804
Other noncurrent liabilities
Disaggregation of Revenue [Line Items]
Contract liabilities - noncurrent	$ 297	$ 282

Revenue Recognition - Narrative

Revenue Recognition - Narrative (Details) - USD ($)	12 Months Ended
Revenue Recognition - Narrative (Details) - USD ($)	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Contract with customer, liability, revenue recognized	$ 1,600,000,000	$ 1,500,000,000
Revenue, remaining performance obligation, amount	19,600,000,000
Capitalized contract cost, amortization	251,000,000	191,000,000
Capitalized contract cost, impairment loss	$ 0	$ 0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-10-01
Disaggregation of Revenue [Line Items]
Revenue, remaining performance obligation, percentage	65%
Revenue, remaining performance obligation, expected timing of satisfaction, period	2 years

Revenue Recognition - Capitaliz

Revenue Recognition - Capitalized Contract Costs (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022
Capitalized Contract Cost [Line Items]
Total	$ 380	$ 313
Other current assets
Capitalized Contract Cost [Line Items]
Total	156	139
Other noncurrent assets
Capitalized Contract Cost [Line Items]
Total	$ 224	$ 174

Accounts Receivable - Narrative

Accounts Receivable - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Receivables [Abstract]
Accounts receivable, sale	$ 1,962	$ 1,115
Outstanding receivables sold under factoring agreements	$ 681	$ 476

Inventories - Schedule of Inven

Inventories - Schedule of Inventories (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 1,203	$ 1,040
Work-in-process	226	203
Finished goods	1,347	1,422
Inventories	$ 2,776	$ 2,665

Property, Plant and Equipment -

Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Property, Plant and Equipment [Abstract]
Buildings and improvements	$ 1,337	$ 1,320
Subscriber systems	823	762
Machinery and equipment	4,227	3,745
Construction in progress	540	514
Land	194	197
Total property, plant and equipment	7,121	6,538
Less: Accumulated depreciation	(3,985)	(3,407)
Property, plant and equipment - net	$ 3,136	$ 3,131	$ 3,228

Property, Plant and Equipment_2

Property, Plant and Equipment (Details) $ in Millions	3 Months Ended
Property, Plant and Equipment (Details) $ in Millions	Sep. 30, 2023 USD ($)
Property, Plant and Equipment [Abstract]
Impairment charges	$ 78
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]	Restructuring Costs and Asset Impairment Charges

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Goodwill [Roll Forward]
Goodwill		$ 18,131	$ 18,806
Accumulated impairment loss		(781)	(471)
Beginning Balance	$ 17,350	18,335
Acquisitions	586	219
Divestitures		19
Impairments	(184)	(310)
Foreign currency translation and other	184	(875)
Ending Balance	17,936	17,350
Building Solutions North America
Goodwill [Roll Forward]
Goodwill		9,630	9,639
Accumulated impairment loss		(659)	(424)
Beginning Balance	8,971	9,215
Acquisitions	399	37
Divestitures		0
Impairments	0	(235)
Foreign currency translation and other	11	(46)
Ending Balance	9,381	8,971
Building Solutions EMEA/LA
Goodwill [Roll Forward]
Goodwill		1,794	2,088
Accumulated impairment loss		(47)	(47)
Beginning Balance	1,747	2,041
Acquisitions	13	78
Divestitures		5
Impairments	0	0
Foreign currency translation and other	125	(367)
Ending Balance	1,885	1,747
Building Solutions Asia Pacific
Goodwill [Roll Forward]
Goodwill		1,116	1,237
Accumulated impairment loss		0	0
Beginning Balance	1,116	1,237
Acquisitions	55	44
Divestitures		14
Impairments	0	0
Foreign currency translation and other	8	(151)
Ending Balance	1,179	1,116
Global Products
Goodwill [Roll Forward]
Goodwill		5,591	5,842
Accumulated impairment loss		(75)	$ 0
Beginning Balance	5,516	5,842
Acquisitions	119	60
Divestitures		0
Impairments	(184)	(75)
Foreign currency translation and other	40	(311)
Ending Balance	$ 5,491	$ 5,516

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Narrative (Details) - USD ($)	3 Months Ended	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021	Jul. 31, 2023
Intangible Assets [Line Items]
Goodwill impairment loss		$ 184,000,000	$ 310,000,000
Goodwill	$ 17,936,000,000	17,936,000,000	17,350,000,000	$ 18,335,000,000
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]	Restructuring Costs and Asset Impairment Charges
Indefinite-lived trademarks	$ 412,000,000	412,000,000
Amortization of intangible assets		439,000,000	427,000,000	435,000,000
Global Products
Intangible Assets [Line Items]
Impairment of intangible assets, finite-lived	18,000,000
Building Solutions Asia Pacific
Intangible Assets [Line Items]
Goodwill impairment loss		0	0
Goodwill	1,179,000,000	1,179,000,000	1,116,000,000	$ 1,237,000,000
Impairment of intangible assets, indefinite-lived	10,000,000
Silent-Aire
Intangible Assets [Line Items]
Goodwill impairment loss		184,000,000	75,000,000
Goodwill	0	0
Reporting Unit with Fair Value Exceeding Carrying Value by 10%
Intangible Assets [Line Items]
Goodwill					$ 455,000,000
Fair value in excess of carrying value percentage					10%
Reporting Unit with Fair Value Exceeding Carrying Value by 10% \| Measurement Input, Discount Rate
Intangible Assets [Line Items]
Increase (decrease) in measurement input					1%
Reporting Unit with Fair Value Exceeding Carrying Value by 10% \| Measurement Input, Long-Term Revenue Growth Rate
Intangible Assets [Line Items]
Increase (decrease) in measurement input					1.50%
North America Retail
Intangible Assets [Line Items]
Goodwill impairment loss			235,000,000
Goodwill	$ 0	$ 0	$ 0

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022
Definite-lived intangible assets
Gross Carrying Amount	$ 5,511	$ 5,441
Accumulated Amortization	(2,737)	(2,493)
Net	2,774	2,948
Indefinite-lived intangible assets
Gross Carrying Amount	7,625	7,648
Net	4,888	5,155
Trademarks/tradenames
Indefinite-lived intangible assets
Gross Carrying Amount	2,114	2,207
Technology
Definite-lived intangible assets
Gross Carrying Amount	1,575	1,481
Accumulated Amortization	(806)	(728)
Net	769	753
Customer relationships
Definite-lived intangible assets
Gross Carrying Amount	3,047	3,011
Accumulated Amortization	(1,496)	(1,340)
Net	1,551	1,671
Miscellaneous
Definite-lived intangible assets
Gross Carrying Amount	889	949
Accumulated Amortization	(435)	(425)
Net	$ 454	$ 524

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets - Schedule of Finite-Lived Intangible Assets, Future Amortization Expense (Details) $ in Millions	Sep. 30, 2023 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2024	$ 508
2025	479
2026	410
2027	365
2028	$ 252

Leases - Lease, Cost (Details)

Leases - Lease, Cost (Details) - USD ($) $ in Millions	12 Months Ended
Leases - Lease, Cost (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Leases [Abstract]
Operating lease cost	$ 384	$ 352	$ 384
Variable lease cost	165	165	130
Total lease costs	$ 549	$ 517	$ 514

Leases - Supplemental Balance S

Leases - Supplemental Balance Sheet Information, Leases (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022
Leases [Abstract]
Operating lease right-of-use assets	$ 1,389	$ 1,271
Operating lease liabilities - current	318	280
Operating lease liabilities - noncurrent	$ 1,086	$ 987
Weighted-average remaining lease term	7 years	7 years
Weighted-average discount rate	3.50%	2.10%
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other noncurrent assets	Other noncurrent assets
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other current liabilities	Other current liabilities
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other noncurrent liabilities	Other noncurrent liabilities

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow Information, Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Cash paid for amounts included in the measurement of lease liability:
Operating cash outflows from operating leases	$ 373	$ 367	$ 398
Noncash operating lease activity:
Right-of-use assets obtained in exchange for operating lease liabilities	$ 427	$ 369	$ 515

Leases - Lessee, Operating Leas

Leases - Lessee, Operating Lease, Liability, Maturity (Details) $ in Millions	Sep. 30, 2023 USD ($)
Leases [Abstract]
2023	$ 358
2024	300
2025	227
2026	171
2027	123
After 2028	404
Total operating lease payments	1,583
Less: Interest	(179)
Present value of lease payments	$ 1,404

Debt and Financing Arrangemen_3

Debt and Financing Arrangements - Short-Term Debt (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022
Short-term Debt [Line Items]
Short-term debt	$ 385	$ 669
Weighted average interest rate on short-term debt outstanding	5.10%	0.50%
Bank borrowings
Short-term Debt [Line Items]
Short-term debt	$ 26	$ 10
Commercial paper
Short-term Debt [Line Items]
Short-term debt	200	172
Term loans
Short-term Debt [Line Items]
Short-term debt	$ 159	$ 487

Debt and Financing Arrangemen_4

Debt and Financing Arrangements - Narrative (Details) - USD ($)	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021	Dec. 11, 2023
Debt Instrument [Line Items]
Interest paid	$ 298,000,000	$ 226,000,000	$ 242,000,000
$2.5 Billion Facility Expiring Dec 2024
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	2,500,000,000
$500 million facility expiring Nov 2023
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	500,000,000
$2.5 billion facility expiring Dec 2028 \| Subsequent Event
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity				$ 2,500,000,000
$500 million facility expiring Dec 2024 \| Subsequent Event
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity				$ 500,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt	$ 0

Debt and Financing Arrangemen_5

Debt and Financing Arrangements - Long-Term Debt (Details) € in Millions, ¥ in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2022 EUR (€)	Sep. 30, 2022 JPY (¥)
Debt Instrument [Line Items]
Other	$ 36	$ 25
Total	8,498	8,324
Less: current portion	645	865
Less: debt issuance costs	35	33
Long-term debt	$ 7,818	7,426
4.625% Due in 2023 \| Johnson Controls International plc
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.625%
Debt instrument, face amount		25
Long-term debt	$ 0	25
4.625% Due in 2023 \| Tyco International Finance S.A. (TIFSA)
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.625%
Debt instrument, face amount		7
Long-term debt	$ 0	7
1.00% Due in 2023 \| Johnson Controls International plc
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	1%
Debt instrument, face amount \| €			€ 846
Long-term debt	$ 0	830
3.625% Due in 2024 \| Johnson Controls International plc
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	3.625%
Debt instrument, face amount		453
Long-term debt	$ 453	453
3.625% Due in 2024 \| Johnson Controls Inc.
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	3.625%
Debt instrument, face amount		31
Long-term debt	$ 31	31
EURIBOR Plus 0.70% \| Johnson Controls International plc
Debt Instrument [Line Items]
Debt instrument, face amount \| €			150
Long-term debt	$ 159	0
EURIBOR Plus 0.70% \| Johnson Controls International plc \| Tokyo Term Risk Free Rate (TORF)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.70%
1.375% Due in 2025 \| Johnson Controls International plc
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	1.375%
Debt instrument, face amount \| €			423
Long-term debt	$ 450	419
1.375% Due in 2025 \| Tyco International Finance S.A. (TIFSA)
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	1.375%
Debt instrument, face amount \| €			54
Long-term debt	$ 57	53
3.90% Due in 2026 \| Johnson Controls International plc
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	3.90%
Debt instrument, face amount		487
Long-term debt	$ 499	505
3.90% Due in 2026 \| Tyco International Finance S.A. (TIFSA)
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	3.90%
Debt instrument, face amount		51
Long-term debt	$ 50	51
TORF JPY Plus 0.40% Due in 2027 \| Johnson Controls International plc
Debt Instrument [Line Items]
Debt instrument, face amount \| ¥				¥ 30,000
Long-term debt	$ 202	208
TORF JPY Plus 0.40% Due in 2027 \| Johnson Controls International plc \| Tokyo Term Risk Free Rate (TORF)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.40%
0.375% Due in 2027 \| Johnson Controls International plc (JCI) and Tyco Fire & Security Finance S.C.A. (TFSCA)
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	0.375%
Debt instrument, face amount \| €			500
Long-term debt	$ 528	488
3.00 % Due in 2028 \| Johnson Controls International plc (JCI) and Tyco Fire & Security Finance S.C.A. (TFSCA)
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	3%
Debt instrument, face amount \| €			600
Long-term debt	$ 634	586
1.75% Due in 2030 \| Johnson Controls International plc (JCI) and Tyco Fire & Security Finance S.C.A. (TFSCA)
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	1.75%
Debt instrument, face amount		625
Long-term debt	$ 624	623
2.00% Due in 2031 \| Johnson Controls International plc (JCI) and Tyco Fire & Security Finance S.C.A. (TFSCA)
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2%
Debt instrument, face amount		500
Long-term debt	$ 497	496
1.00% Due in 2032 \| Johnson Controls International plc (JCI) and Tyco Fire & Security Finance S.C.A. (TFSCA)
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	1%
Debt instrument, face amount \| €			500
Long-term debt	$ 529	489
4.90% Due in 2032 \| Johnson Controls International plc (JCI) and Tyco Fire & Security Finance S.C.A. (TFSCA)
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.90%
Debt instrument, face amount		400
Long-term debt	$ 394	394
4.25% Due in 2035 \| Johnson Controls International plc (JCI) and Tyco Fire & Security Finance S.C.A. (TFSCA)
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.25%
Debt instrument, face amount \| €			€ 800
Long-term debt	$ 839	0
6.00% Due in 2036 \| Johnson Controls International plc
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	6%
Debt instrument, face amount		342
Long-term debt	$ 339	339
6.00% Due in 2036 \| Johnson Controls Inc.
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	6%
Debt instrument, face amount		8
Long-term debt	$ 8	8
5.70% Due in 2041 \| Johnson Controls International plc
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.70%
Debt instrument, face amount		190
Long-term debt	$ 189	189
5.70% Due in 2041 \| Johnson Controls Inc.
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.70%
Debt instrument, face amount		30
Long-term debt	$ 30	30
5.25% Due in 2042 \| Johnson Controls International plc
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.25%
Debt instrument, face amount		155
Long-term debt	$ 155	155
5.25% Due in 2042 \| Johnson Controls Inc.
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.25%
Debt instrument, face amount		6
Long-term debt	$ 6	6
4.625% Due in 2044 \| Johnson Controls International plc
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.625%
Debt instrument, face amount		444
Long-term debt	$ 442	441
4.625% Due in 2044 \| Johnson Controls Inc.
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.625%
Debt instrument, face amount		6
Long-term debt	$ 6	6
5.125% Due in 2045 \| Johnson Controls International plc
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.125%
Debt instrument, face amount		477
Long-term debt	$ 431	557
5.125% Due in 2045 \| Tyco International Finance S.A. (TIFSA)
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.125%
Debt instrument, face amount		23
Long-term debt	$ 23	23
6.95% Due in 2046 \| Johnson Controls International plc
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	6.95%
Debt instrument, face amount		32
Long-term debt	$ 32	32
6.95% Due in 2046 \| Johnson Controls Inc.
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	6.95%
Debt instrument, face amount		4
Long-term debt	$ 4	4
4.50% Due in 2047 \| Johnson Controls International plc
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.50%
Debt instrument, face amount		500
Long-term debt	$ 496	496
4.95% Due in 2064 \| Johnson Controls International plc
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.95%
Debt instrument, face amount		341
Long-term debt	$ 340	340
4.95% Due in 2064 \| Johnson Controls Inc.
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.95%
Debt instrument, face amount		15
Long-term debt	$ 15	$ 15

Debt and Financing Arrangemen_6

Debt and Financing Arrangements - Schedule of Maturities of Long-term Debt (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022
Debt Disclosure [Abstract]
2024	$ 646
2025	508
2026	550
2027	731
2028	634
After 2028	5,429
Total	$ 8,498	$ 8,324

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities - Narrative (Details) - USD ($)	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Derivative [Line Items]
Hedge percentage for foreign exchange transactional exposures, minimum	70%
Hedge percentage for foreign exchange transactional exposures, maximum	90%
Pre-tax gains (losses) related to net investment hedges reclassified from other comprehensive income	$ 0	$ 0	$ 0
Net Investment Hedging
Derivative [Line Items]
Pre-tax gains (losses) related to net investment hedges recorded in other comprehensive income	$ (223,000,000)	$ 470,000,000	$ 42,000,000

Derivative Instruments and He_4

Derivative Instruments and Hedging Activities - Outstanding Commodity Hedge Contracts (Details) - T	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Copper
Derivative [Line Items]
Volume Outstanding	2,812	3,629
Aluminum
Derivative [Line Items]
Volume Outstanding	5,976	6,758

Derivative Instruments and He_5

Derivative Instruments and Hedging Activities - Schedule of Interest Rate Derivatives (Details) - Interest rate swaps € in Millions, $ in Millions	Sep. 30, 2023 USD ($)	Sep. 30, 2023 EUR (€)	Sep. 30, 2022 USD ($)	Sep. 30, 2022 EUR (€)
Derivative [Line Items]
Forward-starting interest swaps	$ 600	€ 400	$ 300	€ 200
Anticipated note issuance	$ 800	€ 800	$ 400	€ 600

Derivative Instruments and He_6

Derivative Instruments and Hedging Activities - Schedule of Notional Amounts of Outstanding Derivative Positions (Details) € in Billions, ¥ in Billions	Sep. 30, 2023 EUR (€)	Sep. 30, 2023 JPY (¥)	Sep. 30, 2022 EUR (€)	Sep. 30, 2022 JPY (¥)
Foreign currency denominated debt
Derivative [Line Items]
Derivative, notional amount	€ 2.9	¥ 30	€ 2.9	¥ 30
Cross-currency interest rate swap
Derivative [Line Items]
Derivative, notional amount		¥ 14		¥ 0

Derivative Instruments and He_7

Derivative Instruments and Hedging Activities - Location and Fair Values of Derivative Instruments and Hedging Activities (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022
Derivative Instruments [Line Items]
Total assets	$ 56	$ 54
Total liabilities	3,280	3,138
Designated as Hedging Instruments
Derivative Instruments [Line Items]
Total assets	43	30
Total liabilities	3,275	3,111
Designated as Hedging Instruments \| Other current assets \| Foreign currency exchange derivatives
Derivative Instruments [Line Items]
Total assets	16	30
Designated as Hedging Instruments \| Other current assets \| Interest rate swaps
Derivative Instruments [Line Items]
Total assets	22	0
Designated as Hedging Instruments \| Other noncurrent assets \| Cross-currency interest rate swap
Derivative Instruments [Line Items]
Total assets	5	0
Designated as Hedging Instruments \| Other current liabilities \| Foreign currency exchange derivatives
Derivative Instruments [Line Items]
Total liabilities	20	24
Designated as Hedging Instruments \| Other current liabilities \| Commodity derivatives
Derivative Instruments [Line Items]
Total liabilities	2	10
Designated as Hedging Instruments \| Long-term debt \| Foreign currency denominated debt
Derivative Instruments [Line Items]
Total liabilities	3,253	3,077
Not Designated as Hedging Instruments
Derivative Instruments [Line Items]
Total assets	13	24
Total liabilities	5	27
Not Designated as Hedging Instruments \| Other current assets \| Foreign currency exchange derivatives
Derivative Instruments [Line Items]
Total assets	13	24
Not Designated as Hedging Instruments \| Other current assets \| Interest rate swaps
Derivative Instruments [Line Items]
Total assets	0	0
Not Designated as Hedging Instruments \| Other noncurrent assets \| Cross-currency interest rate swap
Derivative Instruments [Line Items]
Total assets	0	0
Not Designated as Hedging Instruments \| Other current liabilities \| Foreign currency exchange derivatives
Derivative Instruments [Line Items]
Total liabilities	5	27
Not Designated as Hedging Instruments \| Other current liabilities \| Commodity derivatives
Derivative Instruments [Line Items]
Total liabilities	0	0
Not Designated as Hedging Instruments \| Long-term debt \| Foreign currency denominated debt
Derivative Instruments [Line Items]
Total liabilities	$ 0	$ 0

Derivative Instruments and He_8

Derivative Instruments and Hedging Activities - Derivative Assets and Liabilities, Offsetting (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022
Fair Value of Assets
Gross amount recognized	$ 56	$ 54
Gross amount eligible for offsetting	(19)	(42)
Net amount	37	12
Fair Value of Liabilities
Gross amount recognized	3,280	3,138
Gross amount eligible for offsetting	(19)	(42)
Net amount	$ 3,261	$ 3,096
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other current assets	Other current assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other current liabilities	Other current liabilities

Derivative Instruments and He_9

Derivative Instruments and Hedging Activities - Location and Amount of Gains and Losses Gross of Tax on Derivative Instruments and Related Hedge Items (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income on derivative	$ (118)	$ 90	$ 193
Foreign currency exchange derivatives \| Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income on derivative	(16)	10	(6)
Foreign currency exchange derivatives \| Net financing charges
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income on derivative	(103)	85	174
Foreign currency exchange derivatives \| Selling, general and administrative
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income on derivative	0	0	(2)
Foreign currency exchange derivatives \| Income tax provision
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income on derivative	0	0	(1)
Interest rate swaps \| Net financing charges
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income on derivative	1	0	0
Equity swap \| Selling, general and administrative
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income on derivative	0	(5)	28
Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Other comprehensive income (loss), cash flow hedge, gain (loss), before reclassification and tax	15	21	(2)
Amount of gain (loss) reclassified from AOCI into income	(12)	16	14
Cash Flow Hedging \| Foreign currency exchange derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Other comprehensive income (loss), cash flow hedge, gain (loss), before reclassification and tax	(13)	26	15
Amount of gain (loss) reclassified from AOCI into income	(4)	25	11
Cash Flow Hedging \| Commodity derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Other comprehensive income (loss), cash flow hedge, gain (loss), before reclassification and tax	1	(21)	4
Amount of gain (loss) reclassified from AOCI into income	(8)	(7)	3
Cash Flow Hedging \| Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Other comprehensive income (loss), cash flow hedge, gain (loss), before reclassification and tax	27	16	(21)
Amount of gain (loss) reclassified from AOCI into income	$ 0	$ (2)	$ 0

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	$ 56	$ 54
Total liabilities	3,280	3,138
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	332	339
Total liabilities	151	121
Fair Value, Measurements, Recurring \| Quoted Prices in Active Markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	276	285
Total liabilities	0	0
Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	56	54
Total liabilities	27	61
Fair Value, Measurements, Recurring \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	0	0
Total liabilities	124	60
Fair Value, Measurements, Recurring \| Other noncurrent assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plan assets	45	46
Fair Value, Measurements, Recurring \| Other noncurrent assets \| Quoted Prices in Active Markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plan assets	45	46
Fair Value, Measurements, Recurring \| Other noncurrent assets \| Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plan assets	0	0
Fair Value, Measurements, Recurring \| Other noncurrent assets \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plan assets	0	0
Fair Value, Measurements, Recurring \| Other current liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent earn-out liabilities	48	30
Fair Value, Measurements, Recurring \| Other current liabilities \| Quoted Prices in Active Markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent earn-out liabilities	0	0
Fair Value, Measurements, Recurring \| Other current liabilities \| Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent earn-out liabilities	0	0
Fair Value, Measurements, Recurring \| Other current liabilities \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent earn-out liabilities	48	30
Fair Value, Measurements, Recurring \| Other noncurrent liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent earn-out liabilities	76	30
Fair Value, Measurements, Recurring \| Other noncurrent liabilities \| Quoted Prices in Active Markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent earn-out liabilities	0	0
Fair Value, Measurements, Recurring \| Other noncurrent liabilities \| Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent earn-out liabilities	0	0
Fair Value, Measurements, Recurring \| Other noncurrent liabilities \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent earn-out liabilities	76	30
Fair Value, Measurements, Recurring \| Fixed Income Securities \| Other current assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in marketable common stock		22
Fair Value, Measurements, Recurring \| Fixed Income Securities \| Other current assets \| Quoted Prices in Active Markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in marketable common stock		22
Fair Value, Measurements, Recurring \| Fixed Income Securities \| Other current assets \| Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in marketable common stock		0
Fair Value, Measurements, Recurring \| Fixed Income Securities \| Other current assets \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in marketable common stock		0
Fair Value, Measurements, Recurring \| Fixed Income Securities \| Other noncurrent assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in marketable common stock	76	86
Fair Value, Measurements, Recurring \| Fixed Income Securities \| Other noncurrent assets \| Quoted Prices in Active Markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in marketable common stock	76	86
Fair Value, Measurements, Recurring \| Fixed Income Securities \| Other noncurrent assets \| Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in marketable common stock	0	0
Fair Value, Measurements, Recurring \| Fixed Income Securities \| Other noncurrent assets \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in marketable common stock	0	0
Fair Value, Measurements, Recurring \| Equity Securities \| Other noncurrent assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in marketable common stock	155	131
Fair Value, Measurements, Recurring \| Equity Securities \| Other noncurrent assets \| Quoted Prices in Active Markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in marketable common stock	155	131
Fair Value, Measurements, Recurring \| Equity Securities \| Other noncurrent assets \| Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in marketable common stock	0	0
Fair Value, Measurements, Recurring \| Equity Securities \| Other noncurrent assets \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in marketable common stock	0	0
Fair Value, Measurements, Recurring \| Foreign currency exchange derivatives \| Other current assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	29	54
Fair Value, Measurements, Recurring \| Foreign currency exchange derivatives \| Other current assets \| Quoted Prices in Active Markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Fair Value, Measurements, Recurring \| Foreign currency exchange derivatives \| Other current assets \| Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	29	54
Fair Value, Measurements, Recurring \| Foreign currency exchange derivatives \| Other current assets \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Fair Value, Measurements, Recurring \| Foreign currency exchange derivatives \| Other current liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	25	51
Fair Value, Measurements, Recurring \| Foreign currency exchange derivatives \| Other current liabilities \| Quoted Prices in Active Markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	0	0
Fair Value, Measurements, Recurring \| Foreign currency exchange derivatives \| Other current liabilities \| Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	25	51
Fair Value, Measurements, Recurring \| Foreign currency exchange derivatives \| Other current liabilities \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	0	0
Fair Value, Measurements, Recurring \| Equity swap \| Other noncurrent assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	5
Fair Value, Measurements, Recurring \| Equity swap \| Other noncurrent assets \| Quoted Prices in Active Markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0
Fair Value, Measurements, Recurring \| Equity swap \| Other noncurrent assets \| Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	5
Fair Value, Measurements, Recurring \| Equity swap \| Other noncurrent assets \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0
Fair Value, Measurements, Recurring \| Commodity derivatives \| Other current liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	2	10
Fair Value, Measurements, Recurring \| Commodity derivatives \| Other current liabilities \| Quoted Prices in Active Markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	0	0
Fair Value, Measurements, Recurring \| Commodity derivatives \| Other current liabilities \| Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	2	10
Fair Value, Measurements, Recurring \| Commodity derivatives \| Other current liabilities \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	0	$ 0
Fair Value, Measurements, Recurring \| Interest rate swaps \| Other current assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	22
Fair Value, Measurements, Recurring \| Interest rate swaps \| Other current assets \| Quoted Prices in Active Markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0
Fair Value, Measurements, Recurring \| Interest rate swaps \| Other current assets \| Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	22
Fair Value, Measurements, Recurring \| Interest rate swaps \| Other current assets \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	$ 0

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation (Details) $ in Millions	12 Months Ended
	Sep. 30, 2023 USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, General and Administrative Expense
Significant Unobservable Inputs (Level 3) \| Fair Value, Measurements, Recurring
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 60
Acquisitions	112
Payments	(10)
Reduction for change in estimates	(39)
Currency translation	1
Ending balance	$ 124

Fair Value Measurements - Debt

Fair Value Measurements - Debt Securities, Trading, and Equity Securities, FV-NI (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Deferred compensation plan assets
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Equity securities, FV-NI, unrealized gain (loss)	$ 5	$ (10)
Investments in exchange traded funds
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Equity securities, FV-NI, unrealized gain (loss)	$ 24	$ (55)

Fair Value Measurements - Fai_2

Fair Value Measurements - Fair Value of Long-Term Debt (Details) - USD ($) $ in Billions	Sep. 30, 2023	Sep. 30, 2022
Debt Instrument [Line Items]
Total fair value of long-term debt	$ 7.5	$ 7.3
Quoted Prices in Active Markets (Level 1)
Debt Instrument [Line Items]
Total fair value of long-term debt	7.1	7.1
Significant Other Observable Inputs (Level 2)
Debt Instrument [Line Items]
Total fair value of long-term debt	$ 0.4	$ 0.2

Stock-based Compensation - Narr

Stock-based Compensation - Narrative (Details) shares in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2023 USD ($) shares
Stock Based Compensation Activity [Line Items]
Shares authorized for issuance under 2021 Plan (in shares) \| shares	55
Shares available for issuance under the 2021 Plan (in shares) \| shares	41
Restricted (Nonvested) Stock
Stock Based Compensation Activity [Line Items]
Total unrecognized compensation cost related to nonvested share-based compensation arrangements granted	$ 113
Weighted average period over which unrecognized compensation cost is expected to be recognized	1 year 10 months 24 days
Performance Shares
Stock Based Compensation Activity [Line Items]
Total unrecognized compensation cost related to nonvested share-based compensation arrangements granted	$ 32
Weighted average period over which unrecognized compensation cost is expected to be recognized	1 year 10 months 24 days
Employee Stock Option
Stock Based Compensation Activity [Line Items]
Total unrecognized compensation cost related to nonvested share-based compensation arrangements granted	$ 10
Weighted average period over which unrecognized compensation cost is expected to be recognized	1 year 7 months 6 days

Stock-Based Compensation - Shar

Stock-Based Compensation - Share-Based Payment Arrangement, Expensed and Capitalized, Amount (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Share-Based Payment Arrangement [Abstract]
Compensation expense	$ 101	$ 104	$ 97
Income tax benefit resulting from share-based compensation arrangements	25	26	24
Tax impact from exercise and vesting of equity settled awards	$ 7	$ 12	$ 12

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Nonvested Stock Awards (Details)	12 Months Ended
	Sep. 30, 2023 $ / shares shares
Restricted (Nonvested) Stock
Weighted Average Price
Beginning balance (in dollars per share) \| $ / shares	$ 58.78
Granted (in dollars per share) \| $ / shares	65.72
Vested (in dollars per share) \| $ / shares	53.55
Forfeited (in dollars per share) \| $ / shares	64.14
Ending balance (in dollars per share) \| $ / shares	$ 64.90
Shares Subject to Restriction/PSU
Beginning balance (in shares) \| shares	2,949,194
Granted (in shares) \| shares	2,010,495
Vested (in shares) \| shares	(1,487,685)
Forfeited (in shares) \| shares	(664,891)
Ending balance (in shares) \| shares	2,807,113
Performance Shares
Weighted Average Price
Beginning balance (in dollars per share) \| $ / shares	$ 60.30
Granted (in dollars per share) \| $ / shares	79.45
Vested (in dollars per share) \| $ / shares	43.19
Forfeited (in dollars per share) \| $ / shares	71.18
Ending balance (in dollars per share) \| $ / shares	$ 71.77
Shares Subject to Restriction/PSU
Beginning balance (in shares) \| shares	1,143,071
Granted (in shares) \| shares	344,029
Vested (in shares) \| shares	(361,117)
Forfeited (in shares) \| shares	(258,459)
Ending balance (in shares) \| shares	867,524

Stock-Based Compensation - Valu

Stock-Based Compensation - Valuation Assumptions (Details)	12 Months Ended
Stock-Based Compensation - Valuation Assumptions (Details)	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Performance Shares
Stock Based Compensation Activity [Line Items]
Risk-free interest rate	4.04%	0.99%	0.20%
Expected volatility of the Company’s stock	33.50%	30%	30.90%
Employee Stock Option
Stock Based Compensation Activity [Line Items]
Expected life of option (years)	5 years 9 months 18 days	6 years	6 years 6 months
Risk-free interest rate	3.59%	1.35%	0.60%
Expected volatility of the Company’s stock	29.40%	27.80%	27.60%
Expected dividend yield on the Company’s stock	2.10%	1.71%	2.28%

Stock-based Compensation - Su_2

Stock-based Compensation - Summary of Stock Option Activity (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Sep. 30, 2023 USD ($) $ / shares shares
Weighted Average Price
Beginning balance (in dollars per share) \| $ / shares	$ 42.46
Granted (in dollars per share) \| $ / shares	66.77
Exercised (in dollars per share) \| $ / shares	38.17
Forfeited or expired (in dollars per share) \| $ / shares	59.31
Ending balance (in dollars per share) \| $ / shares	45.44
Exercisable (in dollars per share) \| $ / shares	$ 39.11
Shares Subject to Option/SAR
Beginning balance (in shares) \| shares	5,683,847
Granted (in shares) \| shares	570,140
Exercised (in shares) \| shares	(1,068,612)
Forfeited or expired (in shares) \| shares	(265,459)
Ending balance (in shares) \| shares	4,919,916
Exercisable (in shares) \| shares	3,762,092
Weighted Average Remaining Contractual Life (years)
Outstanding	5 years 9 months
Exercisable	3 years 9 months 29 days
Aggregate Intrinsic Value (in millions)
Outstanding \| $	$ 56
Exercisable \| $	$ 53

Stock-based Compensation - Sh_2

Stock-based Compensation - Share-Based Payment Arrangement, Option, Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Share-Based Payment Arrangement [Abstract]
Weighted-average grant-date fair value of options granted (in dollars per share)	$ 18.21	$ 18.59	$ 9.36
Intrinsic value of options exercised (in millions)	$ 27	$ 19	$ 94

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Income Available to Ordinary Shareholders
Income from continuing operations	$ 1,849	$ 1,532	$ 1,513
Income from discontinued operations	0	0	124
Net income attributable to Johnson Controls	$ 1,849	$ 1,532	$ 1,637
Weighted Average Shares Outstanding
Basic weighted average shares outstanding (in shares)	684.3	696.1	716.6
Effect of dilutive securities:
Stock options, unvested restricted stock and unvested performance share awards (in shares)	3.1	3.5	4.5
Diluted weighted average shares outstanding (in shares)	687.4	699.6	721.1
Antidilutive Securities
Stock options and unvested restricted stock (in shares)	0.2	0.4	0

Equity - Narrative (Details)

Equity - Narrative (Details) $ in Billions	Sep. 30, 2023 USD ($)
Stockholders' Equity Note [Abstract]
Stock repurchase program, remaining authorized repurchase amount	$ 3

Equity - Accumulated Other Comp

Equity - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balances at beginning of period	$ 17,402	$ 18,753
Aggregate adjustment for the period	(60)	(599)	$ 362
Balances at end of period	17,694	17,402	18,753
Accumulated Other Comprehensive Income (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balances at beginning of period	(911)	(434)	(776)
Balances at end of period	(955)	(911)	(434)
Foreign currency translation adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balances at beginning of period	(901)	(421)	(778)
Aggregate adjustment for the period	(69)	(480)	357
Balances at end of period	(970)	(901)	(421)
Realized and unrealized gains (losses) on derivatives
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balances at beginning of period	(11)	(17)	2
Other comprehensive income (loss) before reclassifications, before tax	19	20	(3)
Reclassification to income	11	(16)	(14)
Net tax impact	(4)	2	(2)
Balances at end of period	15	(11)	(17)
Pension and postretirement plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balances at beginning of period	1	4	0
Other comprehensive income (loss) before reclassifications, before tax	0	0	8
Reclassification to income	(1)	(3)	(3)
Net tax impact	0	0	(1)
Balances at end of period	$ 0	$ 1	$ 4

Retirement Plans - Defined Bene

Retirement Plans - Defined Benefit Plan, Plan with Projected Benefit Obligation in Excess of Plan Assets (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022
Pension Plan
Schedule Of Retirement Plans [Line Items]
Accumulated benefit obligation	$ 1,834	$ 2,004
Projected benefit obligation	1,846	2,013
Fair value of plan assets	1,618	1,720
Fair value of plan assets	1,633	1,729
Postretirement Benefits
Schedule Of Retirement Plans [Line Items]
Projected benefit obligation	58	68
Fair value of plan assets	$ 24	$ 28

Retirement Plans - Narrative (D

Retirement Plans - Narrative (Details) $ in Millions	12 Months Ended
Retirement Plans - Narrative (Details) $ in Millions	Sep. 30, 2023 USD ($) person	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)
Retirement Plans [Line Items]
Total employer contributions to defined benefit plans	$ 55
Estimated future employer contributions to defined benefit plans in next fiscal year	24
Voluntary contributions made by the company to defined benefit plans	0
Matching contributions charged to expense for defined contribution savings plans	$ 209	$ 196	$ 118
Number of multiemployer benefit plans in which the Company participates \| person	260
Multiemployer plan, employer contribution, cost	$ 67	$ 71	$ 67
Postretirement Benefits
Retirement Plans [Line Items]
Total employer contributions to defined benefit plans	2
Estimated future employer contributions to defined benefit plans in next fiscal year	$ 2

Retirement Plans - Projected Be

Retirement Plans - Projected Benefit Payments from Plans (Details) $ in Millions	Sep. 30, 2023 USD ($)
Pension Plan
Schedule Of Retirement Plans [Line Items]
2024	$ 277
2025	235
2026	235
2027	233
2028	172
2029 - 2033	1,160
Postretirement Benefits
Schedule Of Retirement Plans [Line Items]
2024	10
2025	10
2026	9
2027	9
2028	7
2029 - 2033	$ 27

Retirement Plans - Plan Assets

Retirement Plans - Plan Assets by Asset Category (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Pension Plan \| United States
Retirement Plans [Line Items]
Fair value of plan assets	$ 1,499	$ 1,730	$ 2,459
Pension Plan \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	1,388	1,433	2,344
Postretirement Benefits
Retirement Plans [Line Items]
Fair value of plan assets	144	144	$ 172
Postretirement Benefits \| Cash and Cash Equivalents
Retirement Plans [Line Items]
Fair value of plan assets	8	13
Postretirement Benefits \| Large-Cap
Retirement Plans [Line Items]
Fair value of plan assets	71	66
Postretirement Benefits \| Real Estate
Retirement Plans [Line Items]
Fair value of plan assets		65
Postretirement Benefits \| Total Investments in the Fair Value Hierarchy
Retirement Plans [Line Items]
Fair value of plan assets	65
Postretirement Benefits \| Total Investments in the Fair Value Hierarchy \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets		79
Fair Value, Inputs, Level 1, 2 and 3 \| Pension Plan \| United States
Retirement Plans [Line Items]
Fair value of plan assets	1,333	1,574
Fair Value, Inputs, Level 1, 2 and 3 \| Pension Plan \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	1,298	1,336
Fair Value, Inputs, Level 1, 2 and 3 \| Pension Plan \| Cash and Cash Equivalents \| United States
Retirement Plans [Line Items]
Fair value of plan assets	61	40
Fair Value, Inputs, Level 1, 2 and 3 \| Pension Plan \| Cash and Cash Equivalents \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	52	150
Fair Value, Inputs, Level 1, 2 and 3 \| Pension Plan \| Large-Cap \| United States
Retirement Plans [Line Items]
Fair value of plan assets	60	160
Fair Value, Inputs, Level 1, 2 and 3 \| Pension Plan \| Large-Cap \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	52	45
Fair Value, Inputs, Level 1, 2 and 3 \| Pension Plan \| Small-Cap \| United States
Retirement Plans [Line Items]
Fair value of plan assets	65	175
Fair Value, Inputs, Level 1, 2 and 3 \| Pension Plan \| International - Developed \| United States
Retirement Plans [Line Items]
Fair value of plan assets	108	139
Fair Value, Inputs, Level 1, 2 and 3 \| Pension Plan \| International - Developed \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	52	43
Fair Value, Inputs, Level 1, 2 and 3 \| Pension Plan \| International - Emerging \| United States
Retirement Plans [Line Items]
Fair value of plan assets	20	39
Fair Value, Inputs, Level 1, 2 and 3 \| Pension Plan \| International - Emerging \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	2	3
Fair Value, Inputs, Level 1, 2 and 3 \| Pension Plan \| Government \| United States
Retirement Plans [Line Items]
Fair value of plan assets	225	217
Fair Value, Inputs, Level 1, 2 and 3 \| Pension Plan \| Government \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	701	650
Fair Value, Inputs, Level 1, 2 and 3 \| Pension Plan \| Corporate/Other \| United States
Retirement Plans [Line Items]
Fair value of plan assets	583	804
Fair Value, Inputs, Level 1, 2 and 3 \| Pension Plan \| Corporate/Other \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	415	418
Fair Value, Inputs, Level 1, 2 and 3 \| Pension Plan \| Alternative \| United States
Retirement Plans [Line Items]
Fair value of plan assets	211
Fair Value, Inputs, Level 1, 2 and 3 \| Pension Plan \| Real Estate \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	9	9
Fair Value, Inputs, Level 1, 2 and 3 \| Pension Plan \| Hedge Fund \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	15	18
Fair Value, Inputs, Level 1, 2 and 3 \| Postretirement Benefits \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	79
Quoted Prices in Active Markets (Level 1) \| Pension Plan \| United States
Retirement Plans [Line Items]
Fair value of plan assets	1,061	1,533
Quoted Prices in Active Markets (Level 1) \| Pension Plan \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	393	506
Quoted Prices in Active Markets (Level 1) \| Pension Plan \| Cash and Cash Equivalents \| United States
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Quoted Prices in Active Markets (Level 1) \| Pension Plan \| Cash and Cash Equivalents \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	52	150
Quoted Prices in Active Markets (Level 1) \| Pension Plan \| Large-Cap \| United States
Retirement Plans [Line Items]
Fair value of plan assets	60	160
Quoted Prices in Active Markets (Level 1) \| Pension Plan \| Large-Cap \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	9	8
Quoted Prices in Active Markets (Level 1) \| Pension Plan \| Small-Cap \| United States
Retirement Plans [Line Items]
Fair value of plan assets	65	175
Quoted Prices in Active Markets (Level 1) \| Pension Plan \| International - Developed \| United States
Retirement Plans [Line Items]
Fair value of plan assets	108	139
Quoted Prices in Active Markets (Level 1) \| Pension Plan \| International - Developed \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	12	12
Quoted Prices in Active Markets (Level 1) \| Pension Plan \| International - Emerging \| United States
Retirement Plans [Line Items]
Fair value of plan assets	20	39
Quoted Prices in Active Markets (Level 1) \| Pension Plan \| International - Emerging \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Quoted Prices in Active Markets (Level 1) \| Pension Plan \| Government \| United States
Retirement Plans [Line Items]
Fair value of plan assets	225	216
Quoted Prices in Active Markets (Level 1) \| Pension Plan \| Government \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	40	50
Quoted Prices in Active Markets (Level 1) \| Pension Plan \| Corporate/Other \| United States
Retirement Plans [Line Items]
Fair value of plan assets	583	804
Quoted Prices in Active Markets (Level 1) \| Pension Plan \| Corporate/Other \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	271	277
Quoted Prices in Active Markets (Level 1) \| Pension Plan \| Alternative \| United States
Retirement Plans [Line Items]
Fair value of plan assets	0
Quoted Prices in Active Markets (Level 1) \| Pension Plan \| Real Estate \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	9	9
Quoted Prices in Active Markets (Level 1) \| Pension Plan \| Hedge Fund \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Quoted Prices in Active Markets (Level 1) \| Postretirement Benefits
Retirement Plans [Line Items]
Fair value of plan assets
Quoted Prices in Active Markets (Level 1) \| Postretirement Benefits \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	8
Quoted Prices in Active Markets (Level 1) \| Postretirement Benefits \| Cash and Cash Equivalents
Retirement Plans [Line Items]
Fair value of plan assets	8	13
Quoted Prices in Active Markets (Level 1) \| Postretirement Benefits \| Large-Cap
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Quoted Prices in Active Markets (Level 1) \| Postretirement Benefits \| Real Estate
Retirement Plans [Line Items]
Fair value of plan assets
Quoted Prices in Active Markets (Level 1) \| Postretirement Benefits \| Total Investments in the Fair Value Hierarchy
Retirement Plans [Line Items]
Fair value of plan assets
Quoted Prices in Active Markets (Level 1) \| Postretirement Benefits \| Total Investments in the Fair Value Hierarchy \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets		13
Significant Other Observable Inputs (Level 2) \| Pension Plan \| United States
Retirement Plans [Line Items]
Fair value of plan assets	272	41
Significant Other Observable Inputs (Level 2) \| Pension Plan \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	905	830
Significant Other Observable Inputs (Level 2) \| Pension Plan \| Cash and Cash Equivalents \| United States
Retirement Plans [Line Items]
Fair value of plan assets	61	40
Significant Other Observable Inputs (Level 2) \| Pension Plan \| Cash and Cash Equivalents \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Other Observable Inputs (Level 2) \| Pension Plan \| Large-Cap \| United States
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Other Observable Inputs (Level 2) \| Pension Plan \| Large-Cap \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	43	37
Significant Other Observable Inputs (Level 2) \| Pension Plan \| Small-Cap \| United States
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Other Observable Inputs (Level 2) \| Pension Plan \| International - Developed \| United States
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Other Observable Inputs (Level 2) \| Pension Plan \| International - Developed \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	40	31
Significant Other Observable Inputs (Level 2) \| Pension Plan \| International - Emerging \| United States
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Other Observable Inputs (Level 2) \| Pension Plan \| International - Emerging \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	2	3
Significant Other Observable Inputs (Level 2) \| Pension Plan \| Government \| United States
Retirement Plans [Line Items]
Fair value of plan assets	0	1
Significant Other Observable Inputs (Level 2) \| Pension Plan \| Government \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	661	600
Significant Other Observable Inputs (Level 2) \| Pension Plan \| Corporate/Other \| United States
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Other Observable Inputs (Level 2) \| Pension Plan \| Corporate/Other \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	144	141
Significant Other Observable Inputs (Level 2) \| Pension Plan \| Alternative \| United States
Retirement Plans [Line Items]
Fair value of plan assets	211
Significant Other Observable Inputs (Level 2) \| Pension Plan \| Real Estate \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Other Observable Inputs (Level 2) \| Pension Plan \| Hedge Fund \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	15	18
Significant Other Observable Inputs (Level 2) \| Postretirement Benefits
Retirement Plans [Line Items]
Fair value of plan assets
Significant Other Observable Inputs (Level 2) \| Postretirement Benefits \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	71
Significant Other Observable Inputs (Level 2) \| Postretirement Benefits \| Cash and Cash Equivalents
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Other Observable Inputs (Level 2) \| Postretirement Benefits \| Large-Cap
Retirement Plans [Line Items]
Fair value of plan assets	71	66
Significant Other Observable Inputs (Level 2) \| Postretirement Benefits \| Real Estate
Retirement Plans [Line Items]
Fair value of plan assets
Significant Other Observable Inputs (Level 2) \| Postretirement Benefits \| Total Investments in the Fair Value Hierarchy
Retirement Plans [Line Items]
Fair value of plan assets
Significant Other Observable Inputs (Level 2) \| Postretirement Benefits \| Total Investments in the Fair Value Hierarchy \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets		66
Significant Unobservable Inputs (Level 3) \| Pension Plan \| United States
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) \| Pension Plan \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) \| Pension Plan \| Cash and Cash Equivalents \| United States
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) \| Pension Plan \| Cash and Cash Equivalents \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) \| Pension Plan \| Large-Cap \| United States
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) \| Pension Plan \| Large-Cap \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) \| Pension Plan \| Small-Cap \| United States
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) \| Pension Plan \| International - Developed \| United States
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) \| Pension Plan \| International - Developed \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) \| Pension Plan \| International - Emerging \| United States
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) \| Pension Plan \| International - Emerging \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) \| Pension Plan \| Government \| United States
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) \| Pension Plan \| Government \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) \| Pension Plan \| Corporate/Other \| United States
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) \| Pension Plan \| Corporate/Other \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) \| Pension Plan \| Alternative \| United States
Retirement Plans [Line Items]
Fair value of plan assets	0
Significant Unobservable Inputs (Level 3) \| Pension Plan \| Real Estate \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) \| Pension Plan \| Hedge Fund \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) \| Postretirement Benefits
Retirement Plans [Line Items]
Fair value of plan assets
Significant Unobservable Inputs (Level 3) \| Postretirement Benefits \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	0
Significant Unobservable Inputs (Level 3) \| Postretirement Benefits \| Cash and Cash Equivalents
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) \| Postretirement Benefits \| Large-Cap
Retirement Plans [Line Items]
Fair value of plan assets	0	0
Significant Unobservable Inputs (Level 3) \| Postretirement Benefits \| Real Estate
Retirement Plans [Line Items]
Fair value of plan assets
Significant Unobservable Inputs (Level 3) \| Postretirement Benefits \| Total Investments in the Fair Value Hierarchy
Retirement Plans [Line Items]
Fair value of plan assets
Significant Unobservable Inputs (Level 3) \| Postretirement Benefits \| Total Investments in the Fair Value Hierarchy \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets		0
Real Estate Investments Measured at Net Asset Value \| Pension Plan \| Real Estate \| United States
Retirement Plans [Line Items]
Fair value of plan assets	295	322
Real Estate Investments Measured at Net Asset Value \| Pension Plan \| Real Estate \| Foreign Plan
Retirement Plans [Line Items]
Fair value of plan assets	90	97
Real Estate Investments Measured at Net Asset Value \| Pension Plan \| Due to Broker \| United States
Retirement Plans [Line Items]
Fair value of plan assets	$ (129)	$ (166)

Retirement Plans - Accumulated

Retirement Plans - Accumulated Benefit Obligations and Reconciliations of Changes in Projected Benefit Obligation, Changes in Plan Assets and Funded Status (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Pension Plan \| United States
Retirement Plans [Line Items]
Accumulated Benefit Obligation	$ 1,564	$ 1,822
Change in Projected Benefit Obligation
Projected benefit obligation at beginning of year	1,822	2,629
Service cost	0	0	$ 0
Interest cost	78	56	47
Plan participant contributions	0	0
Actuarial gain	(37)	(587)
Benefits and settlements paid	(299)	(276)
Other	0	0
Currency translation adjustment	0	0
Projected benefit obligation at end of year	1,564	1,822	2,629
Change in Plan Assets
Fair value of plan assets at beginning of year	1,730	2,459
Actual return on plan assets	66	(454)
Employer and employee contributions	3	1
Benefits paid	(85)	(85)
Settlement payments	(215)	(191)
Other	0	0
Currency translation adjustment	0	0
Fair value of plan assets at end of year	1,499	1,730	2,459
Funded status	(65)	(92)
Prepaid benefit cost	1	37
Accrued benefit liability	(66)	(129)
Net amount recognized	$ (65)	$ (92)
Weighted Average Assumptions
Discount rate	5.48%	5.08%
Pension Plan \| Foreign Plan
Retirement Plans [Line Items]
Accumulated Benefit Obligation	$ 1,424	$ 1,417
Change in Projected Benefit Obligation
Projected benefit obligation at beginning of year	1,471	2,625
Service cost	16	20	27
Interest cost	68	39	32
Plan participant contributions	3	2
Actuarial gain	(62)	(651)
Benefits and settlements paid	(126)	(166)
Other	(3)	(3)
Currency translation adjustment	106	(395)
Projected benefit obligation at end of year	1,473	1,471	2,625
Change in Plan Assets
Fair value of plan assets at beginning of year	1,433	2,344
Actual return on plan assets	(77)	(459)
Employer and employee contributions	55	94
Benefits paid	(61)	(74)
Settlement payments	(65)	(92)
Other	(2)	(2)
Currency translation adjustment	105	(378)
Fair value of plan assets at end of year	1,388	1,433	2,344
Funded status	(85)	(38)
Prepaid benefit cost	97	151
Accrued benefit liability	(182)	(189)
Net amount recognized	$ (85)	$ (38)
Weighted Average Assumptions
Discount rate	4.72%	4.36%
Rate of compensation increase	2.90%	3%
Interest crediting rate	1.63%	1.69%
Postretirement Benefits
Retirement Plans [Line Items]
Accumulated Benefit Obligation	$ 76	$ 89
Change in Projected Benefit Obligation
Projected benefit obligation at beginning of year	89	123
Service cost	0	1	1
Interest cost	4	2	2
Plan participant contributions	3	3
Actuarial gain	(7)	(25)
Benefits and settlements paid	(12)	(14)
Other	0	0
Currency translation adjustment	0	(1)
Projected benefit obligation at end of year	77	89	123
Change in Plan Assets
Fair value of plan assets at beginning of year	144	172
Actual return on plan assets	7	(20)
Employer and employee contributions	5	6
Benefits paid	(12)	(14)
Settlement payments	0	0
Other	0	0
Currency translation adjustment	0	0
Fair value of plan assets at end of year	144	144	$ 172
Funded status	67	55
Prepaid benefit cost	101	95
Accrued benefit liability	(34)	(40)
Net amount recognized	$ 67	$ 55
Weighted Average Assumptions
Discount rate	5.42%	4.92%

Retirement Plans - Components o

Retirement Plans - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Expense Assumptions:
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, General and Administrative Expense	Selling, General and Administrative Expense	Selling, General and Administrative Expense
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, General and Administrative Expense	Selling, General and Administrative Expense	Selling, General and Administrative Expense
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, General and Administrative Expense	Selling, General and Administrative Expense	Selling, General and Administrative Expense
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Amortization of Prior Service Cost (Credit), Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, General and Administrative Expense	Selling, General and Administrative Expense	Selling, General and Administrative Expense
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Curtailment Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, General and Administrative Expense	Selling, General and Administrative Expense	Selling, General and Administrative Expense
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Settlement Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, General and Administrative Expense	Selling, General and Administrative Expense	Selling, General and Administrative Expense
Pension Plan \| United States
Components of Net Periodic Benefit Cost (Credit):
Service cost	$ 0	$ 0	$ 0
Interest cost	78	56	47
Expected return on plan assets	(131)	(150)	(171)
Net actuarial (gain) loss	28	16	(214)
Settlement (gain) loss	1	1	0
Amortization of prior service cost (credit)	0	0	0
Other	$ 0	$ 0	$ 0
Expense Assumptions:
Discount rate	5.08%	2.52%	2.25%
Expected return on plan assets	8.25%	7%	6.90%
Pension Plan \| Foreign Plan
Components of Net Periodic Benefit Cost (Credit):
Service cost	$ 16	$ 20	$ 27
Interest cost	68	39	32
Expected return on plan assets	(77)	(81)	(112)
Net actuarial (gain) loss	86	(116)	(115)
Settlement (gain) loss	6	5	(1)
Amortization of prior service cost (credit)	0	0	1
Other	$ 0	$ 0	$ (1)
Expense Assumptions:
Discount rate	4.36%	1.79%	1.35%
Expected return on plan assets	5.02%	3.70%	4.90%
Rate of compensation increase	3%	2.85%	2.75%
Interest crediting rate	1.69%	1.44%	1.50%
Postretirement Benefits
Components of Net Periodic Benefit Cost (Credit):
Service cost	$ 0	$ 1	$ 1
Interest cost	4	2	2
Expected return on plan assets	(9)	(9)	(8)
Net actuarial (gain) loss	(5)	4	(35)
Settlement (gain) loss	0	0	0
Amortization of prior service cost (credit)	(4)	(4)	(4)
Other	$ 0	$ 0	$ 0
Expense Assumptions:
Discount rate	4.92%	2.30%	1.90%
Expected return on plan assets	6.64%	5.29%	5.30%
Continuing Operations \| Pension Plan \| United States
Components of Net Periodic Benefit Cost (Credit):
Net periodic benefit cost (credit) included in continuing operations	$ (24)	$ (77)	$ (338)
Continuing Operations \| Pension Plan \| Foreign Plan
Components of Net Periodic Benefit Cost (Credit):
Net periodic benefit cost (credit) included in continuing operations	99	(133)	(169)
Continuing Operations \| Postretirement Benefits
Components of Net Periodic Benefit Cost (Credit):
Net periodic benefit cost (credit) included in continuing operations	$ (14)	$ (6)	$ (44)

Restructuring and Related Cos_3

Restructuring and Related Costs - Schedule of Restructuring Reserve by Segment (Details) - 2021 Restructuring Plan $ in Millions	Sep. 30, 2023 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs, costs incurred to date	$ 276
Building Solutions North America
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs, costs incurred to date	43
Building Solutions EMEA/LA
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs, costs incurred to date	97
Building Solutions Asia Pacific
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs, costs incurred to date	18
Global Products
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs, costs incurred to date	69
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs, costs incurred to date	$ 49

Restructuring and Related Cos_4

Restructuring and Related Costs - Schedule of Restructuring Reserve by Type of Cost (Details) - 2021 Restructuring Plan $ in Millions	12 Months Ended
	Sep. 30, 2023 USD ($)
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	$ 276
Utilized—cash	(130)
Utilized—noncash	(41)
Restructuring reserve, ending balance	105
Employee Severance and Termination Benefits
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	204
Utilized—cash	(111)
Utilized—noncash	0
Restructuring reserve, ending balance	93
Long-Lived Asset Impairments
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	38
Utilized—cash	0
Utilized—noncash	(38)
Restructuring reserve, ending balance	0
Other
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	34
Utilized—cash	(19)
Utilized—noncash	(3)
Restructuring reserve, ending balance	$ 12

Income Taxes - Significant Comp

Income Taxes - Significant Components of Company's Income Tax Provision from Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Tax expense at Ireland statutory rate of 12.5%	$ 214	$ 214	$ 327
U.S. state income tax, net of federal benefit	39	(23)	34
Income subject to the U.S. federal tax rate	56	(95)	3
Income subject to rates different than the statutory rate	92	125	30
Reserve and valuation allowance adjustments	(559)	(274)	66
Intellectual property transactions and adjustments	(176)	0	417
Restructuring and impairment costs	11	40	(9)
Income tax provision (benefit)	$ (323)	$ (13)	$ 868

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Millions		12 Months Ended
Income Taxes - Narrative (Details) - USD ($) $ in Millions	Sep. 11, 2023	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Components of Income Tax [Line Items]
Effective income tax rate reconciliation, percent			(19.00%)	(1.00%)	33%
Valuation allowance, deferred tax asset, increase (decrease), amount			$ 121	$ 27
Unrecognized tax benefits, reduction resulting from lapse of applicable statute of limitations			438	301
Restructuring and impairment costs			1,064	721	$ 242
Restructuring charges, benefit			122	50	39
Intellectual property transactions and adjustments			(176)	0	417
Income taxes receivable, current			65	253
Taxes payable, current			249	$ 143
Undistributed earnings of foreign subsidiaries			24,400
Operating loss carryforwards			24,400
Net operating loss carry forwards that will expire			14,100
Tax credit carryforward, amount			$ 35
Forecast
Components of Income Tax [Line Items]
Impact on deferred tax assets (less than)		$ 100
CANADA
Components of Income Tax [Line Items]
Valuation allowance, deferred tax asset, increase (decrease), amount					(39)
Mexico
Components of Income Tax [Line Items]
Valuation allowance, deferred tax asset, increase (decrease), amount					$ (105)
IRELAND
Components of Income Tax [Line Items]
Statutory rate			12.50%	12.50%	12.50%
Switzerland
Components of Income Tax [Line Items]
Statutory rate	15%

Income Taxes - Summary of Chang

Income Taxes - Summary of Changes in Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Valuation Allowance [Line Items]
Balance at beginning of period	$ 5,973,000	$ 5,853,000	$ 5,518,000
Valuation allowance, deferred tax asset, increase (decrease), amount	121,000	27,000
Balance at end of period	6,378,000	5,973,000	5,853,000
Allowance provision for new operating and other loss carryforwards
Valuation Allowance [Line Items]
Valuation allowance, deferred tax asset, increase (decrease), amount	573,000	325,000	505,000
Allowance benefits
Valuation Allowance [Line Items]
Valuation allowance, deferred tax asset, increase (decrease), amount	$ (168,000)	$ (205,000)	$ (170,000)

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 2,537	$ 2,726	$ 2,528
Additions for tax positions related to the current year	72	169	240
Additions for tax positions of prior years	96	31	33
Reductions for tax positions of prior years	(27)	(48)	(6)
Settlements with taxing authorities	(6)	(7)	(24)
Statute closings and audit resolutions	(446)	(334)	(45)
Ending balance	$ 2,226	$ 2,537	$ 2,726

Income Taxes - Summary of Incom

Income Taxes - Summary of Income Tax Contingencies (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Tax effected unrecognized tax benefits that, if recognized, would affect the effective tax rate	$ 1,581	$ 1,973	$ 2,268
Net accrued interest	$ 335	$ 284	$ 252

Income Taxes - Tax Jurisdiction

Income Taxes - Tax Jurisdictions and Years Currently under Audit Exam (Details)	12 Months Ended
	Sep. 30, 2023
United States \| Earliest Tax Year
Income Tax Examination [Line Items]
Tax jurisdictions and years currently under audit exam	2017
United States \| Latest Tax Year
Income Tax Examination [Line Items]
Tax jurisdictions and years currently under audit exam	2018
Belgium \| Earliest Tax Year
Income Tax Examination [Line Items]
Tax jurisdictions and years currently under audit exam	2015
Belgium \| Latest Tax Year
Income Tax Examination [Line Items]
Tax jurisdictions and years currently under audit exam	2022
Germany \| Earliest Tax Year
Income Tax Examination [Line Items]
Tax jurisdictions and years currently under audit exam	2007
Germany \| Latest Tax Year
Income Tax Examination [Line Items]
Tax jurisdictions and years currently under audit exam	2021
Luxembourg \| Earliest Tax Year
Income Tax Examination [Line Items]
Tax jurisdictions and years currently under audit exam	2017
Luxembourg \| Latest Tax Year
Income Tax Examination [Line Items]
Tax jurisdictions and years currently under audit exam	2018
Mexico \| Earliest Tax Year
Income Tax Examination [Line Items]
Tax jurisdictions and years currently under audit exam	2015
Mexico \| Latest Tax Year
Income Tax Examination [Line Items]
Tax jurisdictions and years currently under audit exam	2018
United Kingdom \| Tax Year 2014
Income Tax Examination [Line Items]
Tax jurisdictions and years currently under audit exam	2014
United Kingdom \| Tax Year 2015
Income Tax Examination [Line Items]
Tax jurisdictions and years currently under audit exam	2015
United Kingdom \| Tax Year 2017
Income Tax Examination [Line Items]
Tax jurisdictions and years currently under audit exam	2018
United Kingdom \| Tax Year 2018
Income Tax Examination [Line Items]
Tax jurisdictions and years currently under audit exam	2020

Income Taxes - Components of Pr

Income Taxes - Components of Provision for Income Taxes on Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Components of income (loss) from continuing operations before income taxes:
U.S.	$ (130)	$ 67	$ 543
Non-U.S.	1,840	1,643	2,071
Income from continuing operations before income taxes	1,710	1,710	2,614
Current
U.S. federal	(165)	(219)	459
U.S. state	105	53	108
Non-U.S.	413	294	265
Total	353	128	832
Deferred
U.S. federal	(267)	(175)	(7)
U.S. state	(25)	(69)	46
Non-U.S.	(384)	103	(3)
Total	(676)	(141)	36
Income tax provision (benefit)	(323)	(13)	868
Income taxes paid	$ 430	$ 568	$ 504

Income Taxes - Deferred Taxes C

Income Taxes - Deferred Taxes Classified in Consolidated Statements of Financial Position (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022
Deferred Taxes [Line Items]
Deferred tax assets	$ 2,134	$ 1,832
Deferred tax liabilities	(1,046)	(1,381)
Net deferred tax asset	1,088	451
Other noncurrent assets
Deferred Taxes [Line Items]
Deferred tax assets	1,499	954
Other noncurrent liabilities
Deferred Taxes [Line Items]
Deferred tax liabilities	$ (411)	$ (503)

Income Taxes - Temporary Differ

Income Taxes - Temporary Differences And Carryforwards in Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Deferred tax assets
Accrued expenses and reserves	$ 507,000	$ 376,000
Employee and retiree benefits	71,000	78,000
Property, plant and equipment	629,000	444,000
Net operating loss and other credit carryforwards	6,748,000	6,488,000
Research and development	171,000	52,000
Operating lease liabilities	348,000	309,000
Other, net	38,000	58,000
Gross deferred tax assets	8,512,000	7,805,000
Valuation allowances	(6,378,000)	(5,973,000)	$ (5,853,000)	$ (5,518,000)
Net deferred tax assets	2,134,000	1,832,000
Deferred tax liabilities
Subsidiaries, joint ventures and partnerships	446,000	338,000
Intangible assets	252,000	734,000
Operating lease right-of-use assets	348,000	309,000
Gross deferred tax liabilities	1,046,000	1,381,000
Net deferred tax asset	$ 1,088,000	$ 451,000

Segment Information - Narrative

Segment Information - Narrative (Details)	12 Months Ended
Segment Information - Narrative (Details)	Sep. 30, 2023 segment
Segment Reporting [Abstract]
Number of reportable segments	4

Segment Information - Financial

Segment Information - Financial Information Related to Company's Reportable Segments (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Segment Information [Line Items]
Net Sales	$ 26,793	$ 25,299	$ 23,668
Segment EBITA	4,018	3,406	3,385
Amortization of intangible assets	(439)	(427)	(435)
Corporate expenses	(432)	(369)	(290)
Net financing charges	(281)	(213)	(206)
Restructuring and impairment costs	(1,064)	(721)	(242)
Net mark-to-market adjustments	(92)	34	402
Income from continuing operations before income taxes	1,710	1,710	2,614
Assets	42,242	42,158	41,890
Assets held for sale	0	66	156
Depreciation/Amortization	848	830	845
Capital Expenditures	539	592	552
Equity income (loss)	265	246	261
Building Solutions North America
Segment Information [Line Items]
Net Sales	10,330	9,367
Building Solutions EMEA/LA
Segment Information [Line Items]
Net Sales	4,096	3,845
Equity method investments	130	115	111
Building Solutions Asia Pacific
Segment Information [Line Items]
Net Sales	2,746	2,714
Global Products
Segment Information [Line Items]
Net Sales	9,621	9,373
Equity method investments	905	834	945
Building Technologies & Solutions
Segment Information [Line Items]
Assets	38,856	37,876	38,669
Depreciation/Amortization	803	791	805
Capital Expenditures	489	539	511
Building Technologies & Solutions \| Building Solutions North America
Segment Information [Line Items]
Net Sales	10,330	9,367	8,685
Segment EBITA	1,394	1,122	1,204
Assets	15,603	15,226	15,317
Depreciation/Amortization	225	213	245
Capital Expenditures	104	141	87
Building Technologies & Solutions \| Building Solutions EMEA/LA
Segment Information [Line Items]
Net Sales	4,096	3,845	3,884
Segment EBITA	316	358	401
Assets	5,202	4,991	5,397
Depreciation/Amortization	101	96	103
Capital Expenditures	119	119	128
Building Technologies & Solutions \| Building Solutions Asia Pacific
Segment Information [Line Items]
Net Sales	2,746	2,714	2,616
Segment EBITA	343	332	344
Assets	2,645	2,474	2,728
Depreciation/Amortization	23	21	25
Capital Expenditures	33	22	31
Building Technologies & Solutions \| Global Products
Segment Information [Line Items]
Net Sales	9,621	9,373	8,483
Segment EBITA	1,965	1,594	1,436
Assets	15,406	15,185	15,227
Depreciation/Amortization	454	461	432
Capital Expenditures	233	257	265
Equity income (loss)	262	240	250
Unallocated
Segment Information [Line Items]
Assets	3,386	4,216	3,065
Corporate
Segment Information [Line Items]
Depreciation/Amortization	45	39	40
Capital Expenditures	$ 50	$ 53	$ 41

Segment Information - Geographi

Segment Information - Geographic Segments (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Geographic Area Information [Line Items]
Net Sales	$ 26,793	$ 25,299	$ 23,668
Long-Lived Assets (Year-end)	3,136	3,131	3,228
United States
Geographic Area Information [Line Items]
Net Sales	13,989	12,864	11,577
Long-Lived Assets (Year-end)	1,594	1,582	1,638
Europe
Geographic Area Information [Line Items]
Net Sales	4,882	4,186	4,069
Long-Lived Assets (Year-end)	514	462	436
Asia Pacific
Geographic Area Information [Line Items]
Net Sales	5,610	5,791	5,748
Long-Lived Assets (Year-end)	630	658	727
Other Non-U.S.
Geographic Area Information [Line Items]
Net Sales	2,312	2,458	2,274
Long-Lived Assets (Year-end)	$ 398	$ 429	$ 427

Guarantees (Details)

Guarantees (Details) - USD ($) $ in Millions	12 Months Ended
Guarantees (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022
Guarantees [Abstract]
Maximum length, in years, of a product warranty for it to be recorded in other current liabilities	1 year
Minimum length, in years, of a product warranty for it to be recorded in other noncurrent liabilities	1 year
Movement in Standard Product Warranty Accrual [Roll Forward]
Balance at beginning of period	$ 180	$ 192
Accruals for warranties issued during the period	134	119
Settlements made (in cash or in kind) during the period	(112)	(114)
Changes in estimates to pre-existing warranties	1	(6)
Accruals from acquisitions and divestitures	1	0
Currency translation	(1)	(11)
Balance at end of period	$ 203	$ 180

Commitments and Contingencies -

Commitments and Contingencies - Schedule of Loss Contingencies by Contingency (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Loss Contingencies [Line Items]
Reserve for environmental liabilities, current	$ 31	$ 66
Reserve for environmental liabilities, noncurrent	211	220
Total reserves for environmental liabilities	242	286
Total asbestos-related liabilities	422	438
Total asbestos-related assets	301	300
Net asbestos-related liabilities	121	138
Restricted
Insurance receivables for asbestos-related liabilities	50	55
Total self-insured liabilities	333	341
Insurance receivables, current	6	10
Insurance receivables, noncurrent	14	20
Total insurance receivables	$ 20	$ 30
Environmental Loss Contingency, Current, Statement of Financial Position [Extensible Enumeration]	Other current liabilities	Other current liabilities
Environmental Loss Contingency, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other noncurrent liabilities	Other noncurrent liabilities
Asbestos Issue
Loss Contingencies [Line Items]
Total asbestos-related assets	$ 251	$ 245
Restricted
Cash	20	6
Investments	231	239
Other current liabilities
Loss Contingencies [Line Items]
Total asbestos-related liabilities	58	58
Restricted
Total self-insured liabilities	$ 86	$ 89
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]	Other current liabilities	Other current liabilities
Other noncurrent liabilities
Loss Contingencies [Line Items]
Total asbestos-related liabilities	$ 364	$ 380
Restricted
Total self-insured liabilities	$ 226	$ 230
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]	Other noncurrent liabilities	Other noncurrent liabilities
Other current assets
Loss Contingencies [Line Items]
Total asbestos-related assets	$ 28	$ 37
Other noncurrent assets
Loss Contingencies [Line Items]
Total asbestos-related assets	273	263
Accrued compensation and benefits
Restricted
Total self-insured liabilities	$ 21	$ 22

Commitments and Contingencies_2

Commitments and Contingencies - Narrative (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Environmental loss contingencies payment period	20 years
Conditional asset retirement obligations	$ 13	$ 17

Subsequent Events (Details)

Subsequent Events (Details) $ in Millions	12 Months Ended
Subsequent Events (Details) $ in Millions	Sep. 30, 2024 USD ($)
Forecast
Subsequent Event [Line Items]
Cybersecurity remediation	$ 0