Apple (AAPL) 10-Q28 Jan 212021 Q1 Quarterly reportFinancial data

Company Profile

Cover Page

Cover Page - shares shares in Thousands	3 Months Ended
Cover Page - shares shares in Thousands	Dec. 26, 2020	Jan. 15, 2021
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Dec. 26, 2020
Document Transition Report	false
Entity File Number	001-36743
Entity Registrant Name	Apple Inc.
Entity Incorporation, State or Country Code	CA
Entity Tax Identification Number	94-2404110
Entity Address, Address Line One	One Apple Park Way
Entity Address, City or Town	Cupertino
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95014
City Area Code	408
Local Phone Number	996-1010
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		16,788,096
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Entity Central Index Key	0000320193
Current Fiscal Year End Date	--09-25
Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, $0.00001 par value per share
Trading Symbol	AAPL
Security Exchange Name	NASDAQ
1.000% Notes due 2022
Entity Information [Line Items]
Title of 12(b) Security	1.000% Notes due 2022
No Trading Symbol Flag	true
Security Exchange Name	NASDAQ
1.375% Notes due 2024
Entity Information [Line Items]
Title of 12(b) Security	1.375% Notes due 2024
No Trading Symbol Flag	true
Security Exchange Name	NASDAQ
0.000% Notes due 2025
Entity Information [Line Items]
Title of 12(b) Security	0.000% Notes due 2025
No Trading Symbol Flag	true
Security Exchange Name	NASDAQ
0.875% Notes due 2025
Entity Information [Line Items]
Title of 12(b) Security	0.875% Notes due 2025
No Trading Symbol Flag	true
Security Exchange Name	NASDAQ
1.625% Notes due 2026
Entity Information [Line Items]
Title of 12(b) Security	1.625% Notes due 2026
No Trading Symbol Flag	true
Security Exchange Name	NASDAQ
2.000% Notes due 2027
Entity Information [Line Items]
Title of 12(b) Security	2.000% Notes due 2027
No Trading Symbol Flag	true
Security Exchange Name	NASDAQ
1.375% Notes due 2029
Entity Information [Line Items]
Title of 12(b) Security	1.375% Notes due 2029
No Trading Symbol Flag	true
Security Exchange Name	NASDAQ
3.050% Notes due 2029
Entity Information [Line Items]
Title of 12(b) Security	3.050% Notes due 2029
No Trading Symbol Flag	true
Security Exchange Name	NASDAQ
0.500% Notes due 2031
Entity Information [Line Items]
Title of 12(b) Security	0.500% Notes due 2031
No Trading Symbol Flag	true
Security Exchange Name	NASDAQ
3.600% Notes due 2042
Entity Information [Line Items]
Title of 12(b) Security	3.600% Notes due 2042
No Trading Symbol Flag	true
Security Exchange Name	NASDAQ

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
Net sales	$ 111,439	$ 91,819
Cost of sales	67,111	56,602
Gross margin	44,328	35,217
Operating expenses:
Research and development	5,163	4,451
Selling, general and administrative	5,631	5,197
Total operating expenses	10,794	9,648
Operating income	33,534	25,569
Other income/(expense), net	45	349
Income before provision for income taxes	33,579	25,918
Provision for income taxes	4,824	3,682
Net income	$ 28,755	$ 22,236
Earnings per share:
Basic (in dollars per share)	$ 1.70	$ 1.26
Diluted (in dollars per share)	$ 1.68	$ 1.25
Shares used in computing earnings per share:
Basic (in shares)	16,935,119	17,660,160
Diluted (in shares)	17,113,688	17,818,417
Products
Net sales	$ 95,678	$ 79,104
Cost of sales	62,130	52,075
Services
Net sales	15,761	12,715
Cost of sales	$ 4,981	$ 4,527

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 28,755	$ 22,236
Other comprehensive income/(loss):
Change in foreign currency translation, net of tax	549	202
Change in unrealized gains/losses on derivative instruments, net of tax:
Change in fair value of derivatives	(304)	111
Adjustment for net (gains)/losses realized and included in net income	(183)	(398)
Total change in unrealized gains/losses on derivative instruments	(487)	(287)
Change in unrealized gains/losses on marketable debt securities, net of tax:
Change in fair value of marketable debt securities	628	125
Adjustment for net (gains)/losses realized and included in net income	(105)	(10)
Total change in unrealized gains/losses on marketable debt securities	523	115
Total other comprehensive income/(loss)	585	30
Total comprehensive income	$ 29,340	$ 22,266

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions	Dec. 26, 2020	Sep. 26, 2020
Current assets:
Cash and cash equivalents	$ 36,010	$ 38,016
Marketable securities	40,816	52,927
Accounts receivable, net	27,101	16,120
Inventories	4,973	4,061
Vendor non-trade receivables	31,519	21,325
Other current assets	13,687	11,264
Total current assets	154,106	143,713
Non-current assets:
Marketable securities	118,745	100,887
Property, plant and equipment, net	37,933	36,766
Other non-current assets	43,270	42,522
Total non-current assets	199,948	180,175
Total assets	354,054	323,888
Current liabilities:
Accounts payable	63,846	42,296
Other current liabilities	48,504	42,684
Deferred revenue	7,395	6,643
Commercial paper	5,000	4,996
Term debt	7,762	8,773
Total current liabilities	132,507	105,392
Non-current liabilities:
Term debt	99,281	98,667
Other non-current liabilities	56,042	54,490
Total non-current liabilities	155,323	153,157
Total liabilities	287,830	258,549
Commitments and contingencies
Shareholders’ equity:
Common stock and additional paid-in capital, $0.00001 par value: 50,400,000 shares authorized; 16,823,263 and 16,976,763 shares issued and outstanding, respectively	51,744	50,779
Retained earnings	14,301	14,966
Accumulated other comprehensive income/(loss)	179	(406)
Total shareholders’ equity	66,224	65,339
Total liabilities and shareholders’ equity	$ 354,054	$ 323,888

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - $ / shares	Dec. 26, 2020	Sep. 26, 2020
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.00001	$ 0.00001
Common stock, shares authorized (in shares)	50,400,000,000	50,400,000,000
Common stock, shares issued (in shares)	16,823,263,000	16,976,763,000
Common stock, shares outstanding (in shares)	16,823,263,000	16,976,763,000

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Millions	Total	Common stock and additional paid-in capital	Retained earnings	Retained earningsCumulative effect of change in accounting principle	Accumulated other comprehensive income/(loss)	Accumulated other comprehensive income/(loss)Cumulative effect of change in accounting principle
Beginning balances at Sep. 28, 2019	$ 90,488	$ 45,174	$ 45,898	$ (136)	$ (584)	$ 136
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued		2
Common stock withheld related to net share settlement of equity awards		(951)	(536)
Share-based compensation		1,747
Net income	22,236		22,236
Dividends and dividend equivalents declared			(3,485)
Common stock repurchased			(20,000)
Other comprehensive income/(loss)	30				30
Ending balances at Dec. 28, 2019	$ 89,531	45,972	43,977		(418)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends and dividend equivalents declared per share or RSU (in dollars per share or RSU)	$ 0.1925
Beginning balances at Sep. 26, 2020	$ 65,339	50,779	14,966	$ 0	(406)	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued		0
Common stock withheld related to net share settlement of equity awards		(1,101)	(1,873)
Share-based compensation		2,066
Net income	28,755		28,755
Dividends and dividend equivalents declared			(3,547)
Common stock repurchased	(24,000)		(24,000)
Other comprehensive income/(loss)	585				585
Ending balances at Dec. 26, 2020	$ 66,224	$ 51,744	$ 14,301		$ 179
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends and dividend equivalents declared per share or RSU (in dollars per share or RSU)	$ 0.205

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
Statement of Cash Flows [Abstract]
Cash, cash equivalents and restricted cash, beginning balances	$ 39,789	$ 50,224
Operating activities:
Net income	28,755	22,236
Adjustments to reconcile net income to cash generated by operating activities:
Depreciation and amortization	2,666	2,816
Share-based compensation expense	2,020	1,710
Deferred income tax benefit	(58)	(349)
Other	25	(142)
Changes in operating assets and liabilities:
Accounts receivable, net	(10,945)	2,015
Inventories	(950)	(28)
Vendor non-trade receivables	(10,194)	3,902
Other current and non-current assets	(3,526)	(7,054)
Accounts payable	21,670	(1,089)
Deferred revenue	1,341	985
Other current and non-current liabilities	7,959	5,514
Cash generated by operating activities	38,763	30,516
Investing activities:
Purchases of marketable securities	(39,800)	(37,416)
Proceeds from maturities of marketable securities	25,177	19,740
Proceeds from sales of marketable securities	9,344	7,280
Payments for acquisition of property, plant and equipment	(3,500)	(2,107)
Payments made in connection with business acquisitions, net	(9)	(958)
Other	204	(207)
Cash used in investing activities	(8,584)	(13,668)
Financing activities:
Proceeds from issuance of common stock	0	2
Payments for taxes related to net share settlement of equity awards	(2,861)	(1,379)
Payments for dividends and dividend equivalents	(3,613)	(3,539)
Repurchases of common stock	(24,775)	(20,706)
Proceeds from issuance of term debt, net	0	2,210
Repayments of term debt	(1,000)	(1,000)
Proceeds from/(Repayments of) commercial paper, net	22	(979)
Other	(22)	(16)
Cash used in financing activities	(32,249)	(25,407)
Decrease in cash, cash equivalents and restricted cash	(2,070)	(8,559)
Cash, cash equivalents and restricted cash, ending balances	37,719	41,665
Supplemental cash flow disclosure:
Cash paid for income taxes, net	1,787	4,393
Cash paid for interest	$ 619	$ 771

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
Summary of Significant Accounting Policies	Dec. 26, 2020
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation and Preparation The condensed consolidated financial statements include the accounts of Apple Inc. and its wholly owned subsidiaries (collectively “Apple” or the “Company”). Intercompany accounts and transactions have been eliminated. In the opinion of the Company’s management, the condensed consolidated financial statements reflect all adjustments, which are normal and recurring in nature, necessary for fair financial statement presentation. The preparation of these condensed consolidated financial statements and accompanying notes in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported. Actual results could differ materially from those estimates. Certain prior period amounts in the consolidated financial statements and accompanying notes have been reclassified to conform to the current period’s presentation. These condensed consolidated financial statements and accompanying notes should be read in conjunction with the Company’s annual consolidated financial statements and accompanying notes included in its Annual Report on Form 10-K for the fiscal year ended September 26, 2020 (the “2020 Form 10-K”). The Company’s fiscal year is the 52- or 53-week period that ends on the last Saturday of September. An additional week is included in the first fiscal quarter every five or six years to realign the Company’s fiscal quarters with calendar quarters. The Company’s fiscal years 2021 and 2020 span 52 weeks each. Unless otherwise stated, references to particular years, quarters, months and periods refer to the Company’s fiscal years ended in September and the associated quarters, months and periods of those fiscal years. Common Stock Split On August 28, 2020, the Company effected a four-for-one stock split to shareholders of record as of August 24, 2020. All share, restricted stock unit (“RSU”) and per share or per RSU information has been retroactively adjusted to reflect the stock split. Recently Adopted Accounting Pronouncements Financial Instruments – Credit Losses At the beginning of the first quarter of 2021, the Company adopted the Financial Accounting Standards Board’s Accounting Standards Update No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”), which modifies the measurement of expected credit losses on certain financial instruments. The Company adopted ASU 2016-13 utilizing the modified retrospective transition method. The adoption of ASU 2016-13 did not have a material impact on the Company’s condensed consolidated financial statements. Earnings Per Share The following table shows the computation of basic and diluted earnings per share for the three months ended December 26, 2020 and December 28, 2019 (net income in millions and shares in thousands): Three Months Ended December 26, December 28, Numerator: Net income $ 28,755 $ 22,236 Denominator: Weighted-average basic shares outstanding 16,935,119 17,660,160 Effect of dilutive securities 178,569 158,257 Weighted-average diluted shares 17,113,688 17,818,417 Basic earnings per share $ 1.70 $ 1.26 Diluted earnings per share $ 1.68 $ 1.25

Revenue Recognition

Revenue Recognition	3 Months Ended
Revenue Recognition	Dec. 26, 2020
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition Net sales consist of revenue from the sale of iPhone ® , Mac ® , iPad ® , Services and other products. The Company recognizes revenue at the amount to which it expects to be entitled when control of the products or services is transferred to its customers. Control is generally transferred when the Company has a present right to payment and title and the significant risks and rewards of ownership of products or services are transferred to its customers. For most of the Company’s Products net sales, control transfers when products are shipped. For the Company’s Services net sales, control transfers over time as services are delivered. Payment for Products and Services net sales is collected within a short period following transfer of control or commencement of delivery of services, as applicable. The Company records reductions to Products net sales related to future product returns, price protection and other customer incentive programs based on the Company’s expectations and historical experience. For arrangements with multiple performance obligations, which represent promises within an arrangement that are distinct, the Company allocates revenue to all distinct performance obligations based on their relative stand-alone selling prices (“SSPs”). When available, the Company uses observable prices to determine SSPs. When observable prices are not available, SSPs are established that reflect the Company’s best estimates of what the selling prices of the performance obligations would be if they were sold regularly on a stand-alone basis. The Company’s process for estimating SSPs without observable prices considers multiple factors that may vary depending upon the unique facts and circumstances related to each performance obligation including, where applicable, prices charged by the Company for similar offerings, market trends in the pricing for similar offerings, product-specific business objectives and the estimated cost to provide the performance obligation. The Company has identified up to three performance obligations regularly included in arrangements involving the sale of iPhone, Mac, iPad and certain other products. The first performance obligation, which represents the substantial portion of the allocated sales price, is the hardware and bundled software delivered at the time of sale. The second performance obligation is the right to receive certain product-related bundled services, which include iCloud ® , Siri ® and Maps. The third performance obligation is the right to receive, on a when-and-if-available basis, future unspecified software upgrades relating to the software bundled with each device. The Company allocates revenue and any related discounts to these performance obligations based on their relative SSPs. Because the Company lacks observable prices for the undelivered performance obligations, the allocation of revenue is based on the Company’s estimated SSPs. Revenue allocated to the delivered hardware and bundled software is recognized when control has transferred to the customer, which generally occurs when the product is shipped. Revenue allocated to the product-related bundled services and unspecified software upgrade rights is deferred and recognized on a straight-line basis over the estimated period they are expected to be provided. Cost of sales related to delivered hardware and bundled software, including estimated warranty costs, are recognized at the time of sale. Costs incurred to provide product-related bundled services and unspecified software upgrade rights are recognized as cost of sales as incurred. For certain long-term service arrangements, the Company has performance obligations for services it has not yet delivered. For these arrangements, the Company does not have a right to bill for the undelivered services. The Company has determined that any unbilled consideration relates entirely to the value of the undelivered services. Accordingly, the Company has not recognized revenue, and has elected not to disclose amounts, related to these undelivered services. For the sale of third-party products where the Company obtains control of the product before transferring it to the customer, the Company recognizes revenue based on the gross amount billed to customers. The Company considers multiple factors when determining whether it obtains control of third-party products including, but not limited to, evaluating if it can establish the price of the product, retains inventory risk for tangible products or has the responsibility for ensuring acceptability of the product. For third-party applications sold through the App Store ® and certain digital content sold through the Company’s other digital content stores, the Company does not obtain control of the product before transferring it to the customer. Therefore, the Company accounts for such sales on a net basis by recognizing in Services net sales only the commission it retains. The Company has elected to record revenue net of taxes collected from customers that are remitted to governmental authorities, with the collected taxes recorded within other current liabilities until remitted to the relevant government authority. Deferred Revenue As of December 26, 2020 and September 26, 2020, the Company had total deferred revenue of $11.6 billion and $10.2 billion, respectively. As of December 26, 2020, the Company expects 64% of total deferred revenue to be realized in less than a year, 26% within one-to-two years, 8% within two-to-three years and 2% in greater than three years. Disaggregated Revenue Net sales disaggregated by significant products and services for the three months ended December 26, 2020 and December 28, 2019 were as follows (in millions): Three Months Ended December 26, December 28, iPhone (1) $ 65,597 $ 55,957 Mac (1) 8,675 7,160 iPad (1) 8,435 5,977 Wearables, Home and Accessories (1)(2) 12,971 10,010 Services (3) 15,761 12,715 Total net sales (4) $ 111,439 $ 91,819 (1) Products net sales include amortization of the deferred value of unspecified software upgrade rights, which are bundled in the sales price of the respective product. (2) Wearables, Home and Accessories net sales include sales of AirPods ® , Apple TV ® , Apple Watch ® , Beats ® products, HomePod ® , iPod touch ® and Apple-branded and third-party accessories. (3) Services net sales include sales from the Company’s advertising, AppleCare ® , digital content and other services. Services net sales also include amortization of the deferred value of Maps, Siri, and free iCloud storage and Apple TV+ SM services, which are bundled in the sales price of certain products. (4) Includes $2.5 billion of revenue recognized in the three months ended December 26, 2020 that was included in deferred revenue as of September 26, 2020 and $1.9 billion of revenue recognized in the three months ended December 28, 2019 that was included in deferred revenue as of September 28, 2019. The Company’s proportion of net sales by disaggregated revenue source was generally consistent for each reportable segment in Note 11, “Segment Information and Geographic Data” for the three months ended December 26, 2020 and December 28, 2019.

Financial Instruments

Financial Instruments	3 Months Ended
Financial Instruments	Dec. 26, 2020
Investments, All Other Investments [Abstract]
Financial Instruments	Financial Instruments Cash, Cash Equivalents and Marketable Securities The following tables show the Company’s cash and marketable securities by significant investment category as of December 26, 2020 and September 26, 2020 (in millions): December 26, 2020 Adjusted Unrealized Unrealized Fair Cash and Current Non-Current Marketable Cash $ 18,729 $ — $ — $ 18,729 $ 18,729 $ — $ — Level 1 (1) : Money market funds 6,312 — — 6,312 6,312 — — Level 2 (2) : U.S. Treasury securities 21,939 270 (6) 22,203 3,227 8,527 10,449 U.S. agency securities 8,698 9 (1) 8,706 1,000 3,319 4,387 Non-U.S. government securities 20,185 395 (67) 20,513 100 2,874 17,539 Certificates of deposit and time deposits 8,002 — — 8,002 5,009 2,623 370 Commercial paper 8,620 — — 8,620 1,632 6,988 — Corporate debt securities 83,042 2,155 (44) 85,153 1 16,117 69,035 Municipal securities 1,004 20 — 1,024 — 94 930 Mortgage- and asset-backed securities 16,051 281 (23) 16,309 — 274 16,035 Subtotal 167,541 3,130 (141) 170,530 10,969 40,816 118,745 Total (3) $ 192,582 $ 3,130 $ (141) $ 195,571 $ 36,010 $ 40,816 $ 118,745 September 26, 2020 Adjusted Unrealized Unrealized Fair Cash and Current Non-Current Cash $ 17,773 $ — $ — $ 17,773 $ 17,773 $ — $ — Level 1 (1) : Money market funds 2,171 — — 2,171 2,171 — — Level 2 (2) : U.S. Treasury securities 28,439 331 — 28,770 8,580 11,972 8,218 U.S. agency securities 8,604 8 — 8,612 2,009 3,078 3,525 Non-U.S. government securities 19,361 275 (186) 19,450 255 3,329 15,866 Certificates of deposit and time deposits 10,399 — — 10,399 4,043 6,246 110 Commercial paper 11,226 — — 11,226 3,185 8,041 — Corporate debt securities 76,937 1,834 (175) 78,596 — 19,687 58,909 Municipal securities 1,001 22 — 1,023 — 139 884 Mortgage- and asset-backed securities 13,520 314 (24) 13,810 — 435 13,375 Subtotal 169,487 2,784 (385) 171,886 18,072 52,927 100,887 Total (3) $ 189,431 $ 2,784 $ (385) $ 191,830 $ 38,016 $ 52,927 $ 100,887 (1) Level 1 fair value estimates are based on quoted prices in active markets for identical assets or liabilities. (2) Level 2 fair value estimates are based on observable inputs other than quoted prices in active markets for identical assets and liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. (3) As of December 26, 2020 and September 26, 2020, total marketable securities included $19.5 billion and $18.6 billion, respectively, that was restricted from general use, related to the State Aid Decision (refer to Note 5, “Income Taxes”) and other agreements. The Company may sell certain of its marketable debt securities prior to their stated maturities for reasons including, but not limited to, managing liquidity, credit risk, duration and asset allocation. The maturities of the Company’s non-current marketable debt securities generally range from one The Company typically invests in highly rated securities, with the primary objective of minimizing the potential risk of principal loss. The Company’s investment policy generally requires securities to be investment grade and limits the amount of credit exposure to any one issuer. Fair values were determined for each individual security in the investment portfolio. Non-Marketable Securities The Company holds non-marketable equity securities of certain privately held companies without readily determinable fair values. As of December 26, 2020 and September 26, 2020, the Company’s non-marketable equity securities had a carrying value of $2.5 billion and $2.8 billion, respectively. Restricted Cash A reconciliation of the Company’s cash and cash equivalents in the Condensed Consolidated Balance Sheets to cash, cash equivalents and restricted cash in the Condensed Consolidated Statements of Cash Flows as of December 26, 2020 and September 26, 2020 is as follows (in millions): December 26, September 26, Cash and cash equivalents $ 36,010 $ 38,016 Restricted cash 1,709 1,773 Cash, cash equivalents and restricted cash $ 37,719 $ 39,789 The Company’s restricted cash primarily consisted of cash to support the Company’s iPhone Upgrade Program. Substantially all of the Company’s restricted cash was included in other non-current assets in the Condensed Consolidated Balance Sheets. Derivative Financial Instruments The Company may use derivatives to partially offset its business exposure to foreign currency and interest rate risk on expected future cash flows, net investments in certain foreign subsidiaries, and certain existing assets and liabilities. However, the Company may choose not to hedge certain exposures for a variety of reasons including, but not limited to, accounting considerations or the prohibitive economic cost of hedging particular exposures. There can be no assurance the hedges will offset more than a portion of the financial impact resulting from movements in foreign currency exchange or interest rates. To protect gross margins from fluctuations in foreign currency exchange rates, certain of the Company’s subsidiaries whose functional currency is the U.S. dollar may hedge a portion of forecasted foreign currency revenue, and subsidiaries whose functional currency is not the U.S. dollar may hedge a portion of forecasted inventory purchases not denominated in the subsidiaries’ functional currencies. The Company may enter into forward contracts, option contracts or other instruments to manage this risk and may designate these instruments as cash flow hedges. The Company generally hedges portions of its forecasted foreign currency exposure associated with revenue and inventory purchases, typically for up to 12 months. To protect the net investment in a foreign operation from fluctuations in foreign currency exchange rates, the Company may enter into foreign currency forward and option contracts to offset a portion of the changes in the carrying amounts of these investments due to fluctuations in foreign currency exchange rates. In addition, the Company may use non-derivative financial instruments, such as its foreign currency–denominated debt, as hedges of its net investments in certain foreign subsidiaries. In both of these cases, the Company designates these instruments as net investment hedges. To protect the Company’s foreign currency–denominated term debt or marketable securities from fluctuations in foreign currency exchange rates, the Company may enter into forward contracts, cross-currency swaps or other instruments. These instruments may offset a portion of the foreign currency remeasurement gains or losses, or changes in fair value. The Company may designate these instruments as either cash flow or fair value hedges. As of December 26, 2020, the Company’s hedged term debt– and marketable securities–related foreign currency transactions are expected to be recognized within 22 years. The Company may also enter into non-designated foreign currency contracts to offset a portion of the foreign currency exchange gains and losses generated by the remeasurement of certain assets and liabilities denominated in non-functional currencies. To protect the Company’s foreign currency–denominated term debt or marketable securities from fluctuations in interest rates, the Company may enter into interest rate swaps, options or other instruments. These instruments may offset a portion of the changes in interest income or expense, or changes in fair value. The Company designates these instruments as either cash flow or fair value hedges. As of December 26, 2020, the Company’s hedged interest rate transactions are expected to be recognized within seven years. Cash Flow Hedges Cash flow hedge amounts that are included in the assessment of hedge effectiveness are deferred in accumulated other comprehensive income/(loss) (“AOCI”) until the hedged item is recognized in earnings. Deferred gains and losses associated with cash flow hedges of foreign currency revenue are recognized as a component of net sales in the same period as the related revenue is recognized, and deferred gains and losses related to cash flow hedges of inventory purchases are recognized as a component of cost of sales in the same period as the related costs are recognized. Deferred gains and losses associated with cash flow hedges of interest income or expense are recognized in other income/(expense), net (“OI&E”) in the same period as the related income or expense is recognized. For options designated as cash flow hedges, the time value is excluded from the assessment of hedge effectiveness and recognized in the financial statement line item to which the hedge relates on a straight-line basis over the life of the hedge. Changes in the fair value of amounts excluded from the assessment of hedge effectiveness are recognized in other comprehensive income/(loss) (“OCI”). Derivative instruments designated as cash flow hedges must be de-designated as hedges when it is probable the forecasted hedged transaction will not occur in the initially identified time period or within a subsequent two-month time period. Deferred gains and losses in AOCI associated with such derivative instruments are reclassified into OI&E in the period of de-designation. Any subsequent changes in fair value of such derivative instruments are reflected in OI&E unless they are re-designated as hedges of other transactions. Net Investment Hedges Net investment hedge amounts that are included in the assessment of hedge effectiveness are recorded in OCI as a part of the cumulative translation adjustment. For foreign exchange forward contracts designated as net investment hedges, the forward carry component is excluded from the assessment of hedge effectiveness and recognized in OCI on a straight-line basis over the life of the hedge. Changes in the fair value of amounts excluded from the assessment of hedge effectiveness are recognized in OCI. Fair Value Hedges Fair value hedge gains and losses related to amounts that are included in the assessment of hedge effectiveness are recognized in earnings along with a corresponding loss or gain related to the change in value of the hedged item in the same line in the Condensed Consolidated Statements of Operations. For foreign exchange forward contracts designated as fair value hedges, the forward carry component is excluded from the assessment of hedge effectiveness and recognized in OI&E on a straight-line basis over the life of the hedge. Amounts excluded from the effectiveness assessment of fair value hedges and recognized in OI&E were gains of $82 million and $128 million for the three months ended December 26, 2020 and December 28, 2019, respectively. Changes in the fair value of amounts excluded from the assessment of hedge effectiveness are recognized in OCI. Non-Designated Derivatives Derivatives that are not designated as hedging instruments are adjusted to fair value through earnings in the financial statement line item to which the derivative relates. The Company records all derivatives in the Condensed Consolidated Balance Sheets at fair value. The Company’s accounting treatment for these derivative instruments is based on its hedge designation. The following tables show the Company’s derivative instruments at gross fair value as of December 26, 2020 and September 26, 2020 (in millions): December 26, 2020 Fair Value of Fair Value of Total Derivative assets (1) : Foreign exchange contracts $ 524 $ 780 $ 1,304 Interest rate contracts $ 1,443 $ — $ 1,443 Derivative liabilities (2) : Foreign exchange contracts $ 2,332 $ 1,314 $ 3,646 September 26, 2020 Fair Value of Fair Value of Total Derivative assets (1) : Foreign exchange contracts $ 749 $ 303 $ 1,052 Interest rate contracts $ 1,557 $ — $ 1,557 Derivative liabilities (2) : Foreign exchange contracts $ 1,561 $ 485 $ 2,046 (1) The fair value of derivative assets is measured using Level 2 fair value inputs and is included in other current assets and other non-current assets in the Condensed Consolidated Balance Sheets. (2) The fair value of derivative liabilities is measured using Level 2 fair value inputs and is included in other current liabilities and other non-current liabilities in the Condensed Consolidated Balance Sheets. The Company classifies cash flows related to derivative financial instruments as operating activities in its Condensed Consolidated Statements of Cash Flows. The following table shows the pre-tax gains and losses of the Company’s derivative and non-derivative instruments designated as cash flow and net investment hedges in OCI and the Condensed Consolidated Statements of Operations for the three months ended December 26, 2020 and December 28, 2019 (in millions): Three Months Ended December 26, December 28, Gains/(Losses) recognized in OCI – included in effectiveness assessment: Cash flow hedges: Foreign exchange contracts $ (191) $ 271 Interest rate contracts 54 — Total $ (137) $ 271 Net investment hedges: Foreign currency debt $ — $ 24 Gains/(Losses) reclassified from AOCI into net income – included in effectiveness assessment: Cash flow hedges: Foreign exchange contracts $ 314 $ 491 Interest rate contracts (3) (2) Total $ 311 $ 489 Amounts excluded from the effectiveness assessment of the Company’s hedges and recognized in OCI were losses of $138 million and $89 million for the three months ended December 26, 2020 and December 28, 2019, respectively. The following tables show information about the Company’s derivative instruments designated as fair value hedges and the related hedged items for the three months ended December 26, 2020 and December 28, 2019 and as of December 26, 2020 and September 26, 2020 (in millions): Three Months Ended December 26, December 28, Gains/(Losses) on derivative instruments (1) : Foreign exchange contracts $ (753) $ (183) Interest rate contracts (167) (162) Total $ (920) $ (345) Gains/(Losses) related to hedged items (1) : Marketable securities $ 752 $ 183 Fixed-rate debt 167 162 Total $ 919 $ 345 December 26, September 26, Carrying amounts of hedged assets/(liabilities): Marketable securities (2) $ 17,009 $ 16,270 Fixed-rate debt (3) $ (20,866) $ (21,033) Cumulative hedging adjustments included in the carrying amounts of hedged items: Marketable securities carrying amount increases/(decreases) $ 956 $ 493 Fixed-rate debt carrying amount (increases)/decreases $ (1,374) $ (1,541) (1) Gains and losses related to fair value hedges are included in OI&E in the Condensed Consolidated Statements of Operations. (2) The carrying amounts of marketable securities that are designated as hedged items in fair value hedges are included in current marketable securities and non-current marketable securities in the Condensed Consolidated Balance Sheets (3) The carrying amounts of fixed-rate debt instruments that are designated as hedged items in fair value hedges are included in current term debt and non-current term debt in the Condensed Consolidated Balance Sheets. The following table shows the notional amounts of the Company’s outstanding derivative instruments and credit risk amounts associated with outstanding or unsettled derivative instruments as of December 26, 2020 and September 26, 2020 (in millions): December 26, 2020 September 26, 2020 Notional Credit Risk Notional Credit Risk Instruments designated as accounting hedges: Foreign exchange contracts $ 71,191 $ 524 $ 57,410 $ 749 Interest rate contracts $ 20,900 $ 1,443 $ 20,700 $ 1,557 Instruments not designated as accounting hedges: Foreign exchange contracts $ 123,267 $ 780 $ 88,636 $ 303 The notional amounts for outstanding derivative instruments provide one measure of the transaction volume outstanding and do not represent the amount of the Company’s exposure to credit or market loss. The credit risk amounts represent the Company’s gross exposure to potential accounting loss on derivative instruments that are outstanding or unsettled if all counterparties failed to perform according to the terms of the contract, based on then-current currency or interest rates at each respective date. The Company’s exposure to credit loss and market risk will vary over time as currency and interest rates change. Although the table above reflects the notional and credit risk amounts of the Company’s derivative instruments, it does not reflect the gains or losses associated with the exposures and transactions that the instruments are intended to hedge. The amounts ultimately realized upon settlement of these financial instruments, together with the gains and losses on the underlying exposures, will depend on actual market conditions during the remaining life of the instruments. The Company generally enters into master netting arrangements, which are designed to reduce credit risk by permitting net settlement of transactions with the same counterparty. To further limit credit risk, the Company generally enters into collateral security arrangements that provide for collateral to be received or posted when the net fair value of certain financial instruments fluctuates from contractually established thresholds. The Company presents its derivative assets and derivative liabilities at their gross fair values in its Condensed Consolidated Balance Sheets. As of December 26, 2020, the net cash collateral posted by the Company related to derivative instruments under its collateral security arrangements was $215 million. As of September 26, 2020, the net cash collateral received by the Company related to derivative instruments under its collateral security arrangements was $875 million. The Company includes gross collateral posted and received in other current assets and other current liabilities in the Condensed Consolidated Balance Sheets, respectively. Under master netting arrangements with the respective counterparties to the Company’s derivative contracts, the Company is allowed to net settle transactions with a single net amount payable by one party to the other. As of December 26, 2020 and September 26, 2020, the potential effects of these rights of set-off associated with the Company’s derivative contracts, including the effects of collateral, would be a reduction to both derivative assets and derivative liabilities of $3.5 billion and $2.8 billion, respectively, resulting in net derivative liabilities of $684 million and $312 million, respectively. Accounts Receivable Trade Receivables The Company has considerable trade receivables outstanding with its third-party cellular network carriers, wholesalers, retailers, resellers, small and mid-sized businesses and education, enterprise and government customers. The Company generally does not require collateral from its customers; however, the Company will require collateral or third-party credit support in certain instances to limit credit risk. In addition, when possible, the Company attempts to limit credit risk on trade receivables with credit insurance for certain customers or by requiring third-party financing, loans or leases to support credit exposure. These credit-financing arrangements are directly between the third-party financing company and the end customer. As such, the Company generally does not assume any recourse or credit risk sharing related to any of these arrangements. As of both December 26, 2020 and September 26, 2020, the Company had no customers that individually represented 10% or more of total trade receivables. The Company’s cellular network carriers accounted for 41% of total trade receivables as of December 26, 2020. Vendor Non-Trade Receivables The Company has non-trade receivables from certain of its manufacturing vendors resulting from the sale of components to these vendors who manufacture sub-assemblies or assemble final products for the Company. The Company purchases these components directly from suppliers. As of December 26, 2020, the Company had two vendors that individually represented 10% or more of total vendor non-trade receivables, which accounted for 61% and 14%. As of September 26, 2020, the Company had two vendors that individually represented 10% or more of total vendor non-trade receivables, which accounted for 57%, and 11%.

Condensed Consolidated Financia

Condensed Consolidated Financial Statement Details	3 Months Ended
Condensed Consolidated Financial Statement Details	Dec. 26, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Condensed Consolidated Financial Statement Details	Condensed Consolidated Financial Statement Details The following tables show the Company’s condensed consolidated financial statement details as of December 26, 2020 and September 26, 2020 (in millions): Property, Plant and Equipment, Net December 26, September 26, Land and buildings $ 18,885 $ 17,952 Machinery, equipment and internal-use software 76,224 75,291 Leasehold improvements 10,384 10,283 Gross property, plant and equipment 105,493 103,526 Accumulated depreciation and amortization (67,560) (66,760) Total property, plant and equipment, net $ 37,933 $ 36,766 Other Non-Current Liabilities December 26, September 26, Long-term taxes payable $ 28,170 $ 28,170 Other non-current liabilities 27,872 26,320 Total other non-current liabilities $ 56,042 $ 54,490 Other Income/(Expense), Net The following table shows the detail of OI&E for the three months ended December 26, 2020 and December 28, 2019 (in millions): Three Months Ended December 26, December 28, Interest and dividend income $ 747 $ 1,045 Interest expense (638) (785) Other income/(expense), net (64) 89 Total other income/(expense), net $ 45 $ 349

Income Taxes

Income Taxes	3 Months Ended
Income Taxes	Dec. 26, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Uncertain Tax Positions As of December 26, 2020, the total amount of gross unrecognized tax benefits was $17.1 billion, of which $9.0 billion, if recognized, would impact the Company’s effective tax rate. The Company had accrued $1.6 billion of gross interest and penalties related to income tax matters as of December 26, 2020. The Company is subject to taxation and files income tax returns in the U.S. federal jurisdiction and many state and foreign jurisd ictions. The U.S. Internal Revenue Service concluded its review of the years 2013 through 2015 in 2018, and all years before 2016 are closed. Tax years after 2014 rem ain open in certain major foreign jurisdictions and are subject to examination by the taxing authorities. The Company believes that an adequate provision has been made for any adjustments that may result from tax examinations. However, the outcome of tax audits cannot be predicted with certainty. If any issues addressed in the Company’s tax audits are resolved in a manner inconsistent with its expectations, the Company could be required to adjust its provision for income taxes in the period such resolution occurs. Although the timing of resolution and/or closure of audits is not certain, the Company believes it is reasonably possible that its gross unrecognized tax benefits could decrease in the next 12 months by as mu ch as $4.1 billion. European Commission State Aid Decision On August 30, 2016, the European Commission announced its decision that Ireland granted state aid to the Company by providing tax opinions in 1991 and 2007 concerning the tax allocation of profits of the Irish branches of two subsidiaries of the Company (the “State Aid Decision”). The State Aid Decision ordered Ireland to calculate and recover additional taxes from the Company for the period June 2003 through December 2014. Irish legislative changes, effective as of January 2015, eliminated the application of the tax opinions from that date forward. The recovery amount was calculated to be €13.1 billion, plus interest of €1.2 billion. The Company and Ireland appealed the State Aid Decision to the General Court of the Court of Justice of the European Union (the “General Court”). On July 15, 2020, the General Court annulled the State Aid Decision. On September 25, 2020, the European Commission appealed the General Court’s decision to the European Court of Justice. The Company believes that any incremental Irish corporate income taxes potentially due related to the State Aid Decision would be creditable against U.S. taxes, subject to any foreign tax credit limitations in the U.S. Tax Cuts and Jobs Act of 2017. On an annual basis, the Company may request approval from the Irish Minister for Finance to reduce the recovery amount for certain taxes paid to other countries. As of December 26, 2020, the adjusted recovery amount was €12.9 billion, excluding interest. The adjusted recovery amount plus interest is funded into escrow, where it will remain restricted from general use pending the conclusion of all legal proceedings. Refer to the Cash, Cash Equivalents and Marketable Securities section of Note 3, “Financial Instruments” for more information.

Debt

Debt	3 Months Ended
Debt	Dec. 26, 2020
Debt Disclosure [Abstract]
Debt	Debt Commercial Paper The Company issues unsecured short-term promissory notes (“Commercial Paper”) pursuant to a commercial paper program. The Company uses net proceeds from the commercial paper program for general corporate purposes, including dividends and share repurchases. As of both December 26, 2020 and September 26, 2020, the Company had $5.0 billion of Commercial Paper outstanding, with maturities generally less than nine months. The weighted-average interest rate of the Company’s Commercial Paper was 0.10% and 0.62% as of December 26, 2020 and September 26, 2020, respectively. The following table provides a summary of cash flows associated with the issuance and maturities of Commercial Paper for the three months ended December 26, 2020 and December 28, 2019 (in millions): Three Months Ended December 26, December 28, Maturities 90 days or less: Proceeds from/(Repayments of) commercial paper, net $ 1,439 $ (175) Maturities greater than 90 days: Proceeds from commercial paper 780 1,317 Repayments of commercial paper (2,197) (2,121) Repayments of commercial paper, net (1,417) (804) Total proceeds from/(repayments of) commercial paper, net $ 22 $ (979) Term Debt As of December 26, 2020, the Company had outstanding floating- and fixed-rate notes with varying maturities for an aggregate principal amount of $105.9 billion (collectively the “Notes”). The Notes are senior unsecured obligations and interest is payable in arrears. The following table provides a summary of the Company’s term debt as of December 26, 2020 and September 26, 2020: Maturities (calendar year) December 26, 2020 September 26, 2020 Amount (in millions) Effective Amount (in millions) Effective 2013 – 2020 debt issuances: Floating-rate notes 2021 – 2022 $ 2,250 0.56% – 1.34% $ 2,250 0.60% – 1.39% Fixed-rate 0.000% – 4.650% notes 2021 – 2060 103,613 0.03% – 4.78% 103,828 0.03% – 4.78% Total term debt 105,863 106,078 Unamortized premium/(discount) and issuance costs, net (305) (314) Hedge accounting fair value adjustments 1,485 1,676 Less: Current portion of term debt (7,762) (8,773) Total non-current portion of term debt $ 99,281 $ 98,667 To manage interest rate risk on certain of its U.S. dollar–denominated fixed- or floating-rate notes, the Company has entered into interest rate swaps to effectively convert the fixed interest rates to floating interest rates or the floating interest rates to fixed interest rates on a portion of these notes. Additionally, to manage foreign currency risk on certain of its foreign currency–denominated notes, the Company has entered into foreign currency swaps to effectively convert these notes to U.S. dollar–denominated notes. The effective interest rates for the Notes include the interest on the Notes, amortization of the discount or premium and, if applicable, adjustments related to hedging. The Company recognized $628 million and $757 million of interest cost on its term debt for the three months ended December 26, 2020 and December 28, 2019, respectively. As of December 26, 2020 and September 26, 2020, the fair value of the Company’s Notes, based on Level 2 inputs, was $117.2 billion and $117.1 billion, respectively.

Shareholders' Equity

Shareholders' Equity	3 Months Ended
Shareholders' Equity	Dec. 26, 2020
Equity [Abstract]
Shareholders' Equity	Shareholders’ Equity Share Repurchase Program As of December 26, 2020, the Company was authorized to purchase up to $225 billion of the Company’s common stock under a share repurchase program, of which $192.6 billion had been utilized. During the three months ended December 26, 2020, the Company repurchased 200 million shares of its common stock for $24.0 billion. The Company’s share repurchase program does not obligate it to acquire any specific number of shares. Under this program, shares may be repurchased in privately negotiated and/or open market transactions, including under plans complying with Rule 10b5-1 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”).

Comprehensive Income

Comprehensive Income	3 Months Ended
Comprehensive Income	Dec. 26, 2020
Equity [Abstract]
Comprehensive Income	Comprehensive Income The Company’s OCI consists of foreign currency translation adjustments from those subsidiaries not using the U.S. dollar as their functional currency, net deferred gains and losses on certain derivative instruments accounted for as hedges, and unrealized gains and losses on marketable debt securities classified as available-for-sale. The following table shows the pre-tax amounts reclassified from AOCI into the Condensed Consolidated Statements of Operations, and the associated financial statement line items, for the three months ended December 26, 2020 and December 28, 2019 (in millions): Three Months Ended Comprehensive Income Components Financial Statement Line Items December 26, December 28, Unrealized (gains)/losses on derivative instruments: Foreign exchange contracts Total net sales $ 104 $ (97) Total cost of sales 245 (171) Other income/(expense), net (628) (223) Interest rate contracts Other income/(expense), net 3 2 (276) (489) Unrealized (gains)/losses on marketable debt securities Other income/(expense), net (118) (13) Total amounts reclassified from AOCI $ (394) $ (502) The following table shows the changes in AOCI by component for the three months ended December 26, 2020 (in millions): Cumulative Foreign Unrealized Gains/Losses Unrealized Gains/Losses Total Balances as of September 26, 2020 $ (1,375) $ (877) $ 1,846 $ (406) Other comprehensive income/(loss) before reclassifications 549 (294) 708 963 Amounts reclassified from AOCI — (276) (118) (394) Tax effect — 83 (67) 16 Other comprehensive income/(loss) 549 (487) 523 585 Balances as of December 26, 2020 $ (826) $ (1,364) $ 2,369 $ 179

Benefit Plans

Benefit Plans	3 Months Ended
Benefit Plans	Dec. 26, 2020
Share-based Payment Arrangement [Abstract]
Benefit Plans	Benefit Plans Stock Plans The Company had 713 million shares reserved for future issuance under its stock plans as of December 26, 2020. RSUs granted under the Company’s stock plans generally vest over four years, based on continued employment, and are settled upon vesting in shares of the Company’s common stock on a one-for-one basis. RSUs granted under the Company’s stock plans reduce the number of shares available for grant under the plans by a factor of two times the number of RSUs granted. RSUs canceled and shares withheld to satisfy tax withholding obligations increase the number of shares available for grant under the plans utilizing a factor of two times the number of RSUs canceled or shares withheld. Rule 10b5-1 Trading Plans During the three months ended December 26, 2020, Section 16 officers Katherine L. Adams, Timothy D. Cook, Chris Kondo, Luca Maestri, Deirdre O’Brien and Jeffrey Williams had equity trading plans in place in accordance with Rule 10b5-1(c)(1) under the Exchange Act. An equity trading plan is a written document that pre-establishes the amounts, prices and dates (or formula for determining the amounts, prices and dates) of future purchases or sales of the Company’s stock, including shares acquired under the Company’s employee and director equity plans. Restricted Stock Units A summary of the Company’s RSU activity and related information for the three months ended December 26, 2020 is as follows: Number of RSUs (in thousands) Weighted-Average Aggregate Fair Value (in millions) Balance as of September 26, 2020 310,778 $ 51.58 RSUs granted 75,959 $ 112.75 RSUs vested (68,565) $ 44.91 RSUs canceled (2,819) $ 61.05 Balance as of December 26, 2020 315,353 $ 67.68 $ 41,617 The fair value as of the respective vesting dates of RSUs was $8.5 billion and $4.2 billion for the three months ended December 26, 2020 and December 28, 2019, respectively. Share-Based Compensation The following table shows share-based compensation expense and the related income tax benefit included in the Condensed Consolidated Statements of Operations for the three months ended December 26, 2020 and December 28, 2019 (in millions): Three Months Ended December 26, December 28, Share-based compensation expense $ 2,020 $ 1,710 Income tax benefit related to share-based compensation expense $ (1,624) $ (758) As of December 26, 2020, the total unrecognized compensation cost related to outstanding RSUs and stock options was $18.2 billion, which the Company expects to recognize over a weighted-average period of 2.9 years.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
Commitments and Contingencies	Dec. 26, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Accrued Warranty and Guarantees The following table shows changes in the Company’s accrued warranties and related costs for the three months ended December 26, 2020 and December 28, 2019 (in millions): Three Months Ended December 26, December 28, Beginning accrued warranty and related costs $ 3,354 $ 3,570 Cost of warranty claims (723) (915) Accruals for product warranty 1,493 1,218 Ending accrued warranty and related costs $ 4,124 $ 3,873 The Company offers an iPhone Upgrade Program, which is available to customers who purchase a qualifying iPhone in the U.S., the U.K. and China mainland. The iPhone Upgrade Program provides customers the right to trade in that iPhone for a specified amount when purchasing a new iPhone, provided certain conditions are met. The Company accounts for the trade-in right as a guarantee liability and recognizes arrangement revenue net of the fair value of such right, with subsequent changes to the guarantee liability recognized within net sales. Concentrations in the Available Sources of Supply of Materials and Product Although most components essential to the Company’s business are generally available from multiple sources, certain components are currently obtained from single or limited sources. The Company also competes for various components with other participants in the markets for smartphones, personal computers, tablets and other electronic devices. Therefore, many components used by the Company, including those that are available from multiple sources, are at times subject to industry-wide shortage and significant commodity pricing fluctuations. The Company uses some custom components that are not commonly used by its competitors, and new products introduced by the Company often utilize custom components available from only one source. When a component or product uses new technologies, initial capacity constraints may exist until the suppliers’ yields have matured or their manufacturing capacities have increased. The continued availability of these components at acceptable prices, or at all, may be affected if suppliers decide to concentrate on the production of common components instead of components customized to meet the Company’s requirements. The Company has entered into agreements for the supply of many components; however, there can be no guarantee that the Company will be able to extend or renew these agreements on similar terms, or at all. Substantially all of the Company’s hardware products are manufactured by outsourcing partners that are located primarily in Asia, with some Mac computers manufactured in the U.S. and Ireland. Unconditional Purchase Obligations The Company has entered into certain off–balance sheet commitments that require the future purchase of goods or services (“unconditional purchase obligations”). The Company’s unconditional purchase obligations primarily consist of payments for content creation, Internet and telecommunications services and supplier arrangements. As of December 26, 2020, the Company’s total future payments under noncancelable unconditional purchase obligations having a remaining term in excess of one year were $8.1 billion. Contingencies The Company is subject to various legal proceedings and claims that have arisen in the ordinary course of business and that have not been fully resolved. The outcome of litigation is inherently uncertain. When a loss related to a legal proceeding or claim is probable and reasonably estimable, the Company accrues its best estimate for the ultimate resolution of the matter. If one or more legal matters were resolved against the Company in a reporting period for amounts above management’s expectations, the Company’s financial condition and operating results for that reporting period could be materially adversely affected. In the opinion of management, there was not at least a reasonable possibility the Company may have incurred a material loss, or a material loss greater than a recorded accrual, concerning loss contingencies for asserted legal and other claims, except for the following matters: VirnetX VirnetX, Inc. (“VirnetX”) filed a lawsuit against the Company alleging that certain of the Company’s products infringe on patents owned by VirnetX. On April 11, 2018, a jury returned a verdict against the Company in the U.S. District Court for the Eastern District of Texas (the “Eastern Texas District Court”). The Company appealed the verdict to the U.S. Court of Appeals for the Federal Circuit, which remanded the case back to the Eastern Texas District Court, where a re-trial was held in October 2020. The jury returned a verdict against the Company and awarded damages of $503 million, which the Company intends to appeal. The Company has challenged the validity of the patents at issue in the re-trial at the U.S. Patent and Trademark Office (the “PTO”), and the PTO has declared the patents invalid, subject to further appeal by VirnetX. iOS Performance Management Cases Various civil litigation matters have been filed in state and federal courts in the U.S. and in various international jurisdictions alleging violation of consumer protection laws, fraud, computer intrusion and other causes of action related to the Company’s performance management feature used in its iPhone operating systems, introduced to certain iPhones in iOS updates 10.2.1 and 11.2. The claims seek monetary damages and other non-monetary relief. On April 5, 2018, several U.S. federal actions were consolidated through a Multidistrict Litigation process into a single action in the U.S. District Court for the Northern District of California (the “Northern California District Court”). On February 28, 2020, the parties in the Multidistrict Litigation reached a settlement to resolve the U.S. federal and California state class actions. Under the terms of the settlement, which the Northern California District Court preliminarily approved in May 2020, the Company has agreed to pay up to $500 million in the aggregate to certain U.S. owners of iPhones if certain conditions are met. The final amount of the settlement will be determined based on the number of consumers who file valid claims and the attorneys’ fee award. However, the Company has agreed to pay at least $310 million to settle the claims. In addition to civil litigation, the Company is also responding to governmental investigations and requests for information relating to the performance management feature. On November 18, 2020, the Company reached a settlement with a multi-state group of attorneys general. Under the terms of the settlement, the Company has agreed to pay an aggregate amount of $113 million to resolve civil, statutory claims. The Company continues to believe that its iPhones were not defective, that the performance management feature introduced with iOS updates 10.2.1 and 11.2 was intended to, and did, improve customers’ user experience, and that the Company did not make any misleading statements or fail to disclose any material information. French Competition Authority On March 16, 2020, the French Competition Authority (“FCA”) announced its decision that aspects of the Company’s sales and distribution practices in France violate French competition law and issued a fine of €1.1 billion. The Company strongly disagrees with the FCA’s decision and has appealed. Optis Optis Wireless Technology, LLC and related entities (“Optis”) filed a lawsuit in the U.S. District Court for the Eastern District of Texas against the Company alleging that certain of the Company’s products infringe on patents owned by Optis. On August 11, 2020, a jury returned a verdict against the Company and awarded damages of $506 million. The Company has asked the court to set aside the verdict, where the case remains pending.

Segment Information and Geograp

Segment Information and Geographic Data	3 Months Ended
Segment Information and Geographic Data	Dec. 26, 2020
Segment Reporting [Abstract]
Segment Information and Geographic Data	Segment Information and Geographic Data The Company reports segment information based on the “management” approach. The management approach designates the internal reporting used by management for making decisions and assessing performance as the source of the Company’s reportable segments. The Company manages its business primarily on a geographic basis. The Company’s reportable segments consist of the Americas, Europe, Greater China, Japan and Rest of Asia Pacific. Americas includes both North and South America. Europe includes European countries, as well as India, the Middle East and Africa. Greater China includes China mainland, Hong Kong and Taiwan. Rest of Asia Pacific includes Australia and those Asian countries not included in the Company’s other reportable segments. Although the reportable segments provide similar hardware and software products and similar services, each one is managed separately to better align with the location of the Company’s customers and distribution partners and the unique market dynamics of each geographic region. The accounting policies of the various segments are the same as those described in Note 1, “Summary of Significant Accounting Policies” of the Notes to Consolidated Financial Statements in Part II, Item 8 of the 2020 Form 10-K. The Company evaluates the performance of its reportable segments based on net sales and operating income. Net sales for geographic segments are generally based on the location of customers and sales through the Company’s retail stores located in those geographic locations. Operating income for each segment includes net sales to third parties, related cost of sales and operating expenses directly attributable to the segment. Advertising expenses are generally included in the geographic segment in which the expenditures are incurred. Operating income for each segment excludes other income and expense and certain expenses managed outside the reportable segments. Costs excluded from segment operating income include various corporate expenses such as research and development, corporate marketing expenses, certain share-based compensation expenses, income taxes, various nonrecurring charges and other separately managed general and administrative costs. The Company does not include intercompany transfers between segments for management reporting purposes. The following table shows information by reportable segment for the three months ended December 26, 2020 and December 28, 2019 (in millions): Three Months Ended December 26, December 28, Americas: Net sales $ 46,310 $ 41,367 Operating income $ 15,785 $ 13,092 Europe: Net sales $ 27,306 $ 23,273 Operating income $ 9,589 $ 7,719 Greater China: Net sales $ 21,313 $ 13,578 Operating income $ 8,530 $ 5,363 Japan: Net sales $ 8,285 $ 6,223 Operating income $ 3,503 $ 2,778 Rest of Asia Pacific: Net sales $ 8,225 $ 7,378 Operating income $ 2,953 $ 2,731 A reconciliation of the Company’s segment operating income to the Condensed Consolidated Statements of Operations for the three months ended December 26, 2020 and December 28, 2019 is as follows (in millions): Three Months Ended December 26, December 28, Segment operating income $ 40,360 $ 31,683 Research and development expense (5,163) (4,451) Other corporate expenses, net (1,663) (1,663) Total operating income $ 33,534 $ 25,569

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
Summary of Significant Accounting Policies (Policies)	Dec. 26, 2020
Accounting Policies [Abstract]
Basis of Presentation and Preparation	Basis of Presentation and Preparation The condensed consolidated financial statements include the accounts of Apple Inc. and its wholly owned subsidiaries (collectively “Apple” or the “Company”). Intercompany accounts and transactions have been eliminated. In the opinion of the Company’s management, the condensed consolidated financial statements reflect all adjustments, which are normal and recurring in nature, necessary for fair financial statement presentation. The preparation of these condensed consolidated financial statements and accompanying notes in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported. Actual results could differ materially from those estimates. Certain prior period amounts in the consolidated financial statements and accompanying notes have been reclassified to conform to the current period’s presentation. These condensed consolidated financial statements and accompanying notes should be read in conjunction with the Company’s annual consolidated financial statements and accompanying notes included in its Annual Report on Form 10-K for the fiscal year ended September 26, 2020 (the “2020 Form 10-K”).
Fiscal Period	The Company’s fiscal year is the 52- or 53-week period that ends on the last Saturday of September. An additional week is included in the first fiscal quarter every five or six years to realign the Company’s fiscal quarters with calendar quarters. The Company’s fiscal years 2021 and 2020 span 52 weeks each. Unless otherwise stated, references to particular years, quarters, months and periods refer to the Company’s fiscal years ended in September and the associated quarters, months and periods of those fiscal years.
Common Stock Split	Common Stock Split On August 28, 2020, the Company effected a four-for-one stock split to shareholders of record as of August 24, 2020. All share, restricted stock unit (“RSU”) and per share or per RSU information has been retroactively adjusted to reflect the stock split.
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements Financial Instruments – Credit Losses At the beginning of the first quarter of 2021, the Company adopted the Financial Accounting Standards Board’s Accounting Standards Update No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”), which modifies the measurement of expected credit losses on certain financial instruments. The Company adopted ASU 2016-13 utilizing the modified retrospective transition method. The adoption of ASU 2016-13 did not have a material impact on the Company’s condensed consolidated financial statements.
Revenue Recognition	Net sales consist of revenue from the sale of iPhone ® , Mac ® , iPad ® , Services and other products. The Company recognizes revenue at the amount to which it expects to be entitled when control of the products or services is transferred to its customers. Control is generally transferred when the Company has a present right to payment and title and the significant risks and rewards of ownership of products or services are transferred to its customers. For most of the Company’s Products net sales, control transfers when products are shipped. For the Company’s Services net sales, control transfers over time as services are delivered. Payment for Products and Services net sales is collected within a short period following transfer of control or commencement of delivery of services, as applicable. The Company records reductions to Products net sales related to future product returns, price protection and other customer incentive programs based on the Company’s expectations and historical experience. For arrangements with multiple performance obligations, which represent promises within an arrangement that are distinct, the Company allocates revenue to all distinct performance obligations based on their relative stand-alone selling prices (“SSPs”). When available, the Company uses observable prices to determine SSPs. When observable prices are not available, SSPs are established that reflect the Company’s best estimates of what the selling prices of the performance obligations would be if they were sold regularly on a stand-alone basis. The Company’s process for estimating SSPs without observable prices considers multiple factors that may vary depending upon the unique facts and circumstances related to each performance obligation including, where applicable, prices charged by the Company for similar offerings, market trends in the pricing for similar offerings, product-specific business objectives and the estimated cost to provide the performance obligation. The Company has identified up to three performance obligations regularly included in arrangements involving the sale of iPhone, Mac, iPad and certain other products. The first performance obligation, which represents the substantial portion of the allocated sales price, is the hardware and bundled software delivered at the time of sale. The second performance obligation is the right to receive certain product-related bundled services, which include iCloud ® , Siri ® and Maps. The third performance obligation is the right to receive, on a when-and-if-available basis, future unspecified software upgrades relating to the software bundled with each device. The Company allocates revenue and any related discounts to these performance obligations based on their relative SSPs. Because the Company lacks observable prices for the undelivered performance obligations, the allocation of revenue is based on the Company’s estimated SSPs. Revenue allocated to the delivered hardware and bundled software is recognized when control has transferred to the customer, which generally occurs when the product is shipped. Revenue allocated to the product-related bundled services and unspecified software upgrade rights is deferred and recognized on a straight-line basis over the estimated period they are expected to be provided. Cost of sales related to delivered hardware and bundled software, including estimated warranty costs, are recognized at the time of sale. Costs incurred to provide product-related bundled services and unspecified software upgrade rights are recognized as cost of sales as incurred. For certain long-term service arrangements, the Company has performance obligations for services it has not yet delivered. For these arrangements, the Company does not have a right to bill for the undelivered services. The Company has determined that any unbilled consideration relates entirely to the value of the undelivered services. Accordingly, the Company has not recognized revenue, and has elected not to disclose amounts, related to these undelivered services. For the sale of third-party products where the Company obtains control of the product before transferring it to the customer, the Company recognizes revenue based on the gross amount billed to customers. The Company considers multiple factors when determining whether it obtains control of third-party products including, but not limited to, evaluating if it can establish the price of the product, retains inventory risk for tangible products or has the responsibility for ensuring acceptability of the product. For third-party applications sold through the App Store ® and certain digital content sold through the Company’s other digital content stores, the Company does not obtain control of the product before transferring it to the customer. Therefore, the Company accounts for such sales on a net basis by recognizing in Services net sales only the commission it retains. The Company has elected to record revenue net of taxes collected from customers that are remitted to governmental authorities, with the collected taxes recorded within other current liabilities until remitted to the relevant government authority.
Fair Value Measurements	Level 1 fair value estimates are based on quoted prices in active markets for identical assets or liabilities.Level 2 fair value estimates are based on observable inputs other than quoted prices in active markets for identical assets and liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
Derivative Financial Instruments	Derivative Financial Instruments The Company may use derivatives to partially offset its business exposure to foreign currency and interest rate risk on expected future cash flows, net investments in certain foreign subsidiaries, and certain existing assets and liabilities. However, the Company may choose not to hedge certain exposures for a variety of reasons including, but not limited to, accounting considerations or the prohibitive economic cost of hedging particular exposures. There can be no assurance the hedges will offset more than a portion of the financial impact resulting from movements in foreign currency exchange or interest rates. To protect gross margins from fluctuations in foreign currency exchange rates, certain of the Company’s subsidiaries whose functional currency is the U.S. dollar may hedge a portion of forecasted foreign currency revenue, and subsidiaries whose functional currency is not the U.S. dollar may hedge a portion of forecasted inventory purchases not denominated in the subsidiaries’ functional currencies. The Company may enter into forward contracts, option contracts or other instruments to manage this risk and may designate these instruments as cash flow hedges. The Company generally hedges portions of its forecasted foreign currency exposure associated with revenue and inventory purchases, typically for up to 12 months. To protect the net investment in a foreign operation from fluctuations in foreign currency exchange rates, the Company may enter into foreign currency forward and option contracts to offset a portion of the changes in the carrying amounts of these investments due to fluctuations in foreign currency exchange rates. In addition, the Company may use non-derivative financial instruments, such as its foreign currency–denominated debt, as hedges of its net investments in certain foreign subsidiaries. In both of these cases, the Company designates these instruments as net investment hedges. To protect the Company’s foreign currency–denominated term debt or marketable securities from fluctuations in foreign currency exchange rates, the Company may enter into forward contracts, cross-currency swaps or other instruments. These instruments may offset a portion of the foreign currency remeasurement gains or losses, or changes in fair value. The Company may designate these instruments as either cash flow or fair value hedges. As of December 26, 2020, the Company’s hedged term debt– and marketable securities–related foreign currency transactions are expected to be recognized within 22 years. The Company may also enter into non-designated foreign currency contracts to offset a portion of the foreign currency exchange gains and losses generated by the remeasurement of certain assets and liabilities denominated in non-functional currencies. To protect the Company’s foreign currency–denominated term debt or marketable securities from fluctuations in interest rates, the Company may enter into interest rate swaps, options or other instruments. These instruments may offset a portion of the changes in interest income or expense, or changes in fair value. The Company designates these instruments as either cash flow or fair value hedges. As of December 26, 2020, the Company’s hedged interest rate transactions are expected to be recognized within seven years. Cash Flow Hedges Cash flow hedge amounts that are included in the assessment of hedge effectiveness are deferred in accumulated other comprehensive income/(loss) (“AOCI”) until the hedged item is recognized in earnings. Deferred gains and losses associated with cash flow hedges of foreign currency revenue are recognized as a component of net sales in the same period as the related revenue is recognized, and deferred gains and losses related to cash flow hedges of inventory purchases are recognized as a component of cost of sales in the same period as the related costs are recognized. Deferred gains and losses associated with cash flow hedges of interest income or expense are recognized in other income/(expense), net (“OI&E”) in the same period as the related income or expense is recognized. For options designated as cash flow hedges, the time value is excluded from the assessment of hedge effectiveness and recognized in the financial statement line item to which the hedge relates on a straight-line basis over the life of the hedge. Changes in the fair value of amounts excluded from the assessment of hedge effectiveness are recognized in other comprehensive income/(loss) (“OCI”). Derivative instruments designated as cash flow hedges must be de-designated as hedges when it is probable the forecasted hedged transaction will not occur in the initially identified time period or within a subsequent two-month time period. Deferred gains and losses in AOCI associated with such derivative instruments are reclassified into OI&E in the period of de-designation. Any subsequent changes in fair value of such derivative instruments are reflected in OI&E unless they are re-designated as hedges of other transactions. Net Investment Hedges Net investment hedge amounts that are included in the assessment of hedge effectiveness are recorded in OCI as a part of the cumulative translation adjustment. For foreign exchange forward contracts designated as net investment hedges, the forward carry component is excluded from the assessment of hedge effectiveness and recognized in OCI on a straight-line basis over the life of the hedge. Changes in the fair value of amounts excluded from the assessment of hedge effectiveness are recognized in OCI. Non-Designated Derivatives Derivatives that are not designated as hedging instruments are adjusted to fair value through earnings in the financial statement line item to which the derivative relates.
Segment Reporting	The Company reports segment information based on the “management” approach. The management approach designates the internal reporting used by management for making decisions and assessing performance as the source of the Company’s reportable segments. The Company manages its business primarily on a geographic basis. The Company’s reportable segments consist of the Americas, Europe, Greater China, Japan and Rest of Asia Pacific. Americas includes both North and South America. Europe includes European countries, as well as India, the Middle East and Africa. Greater China includes China mainland, Hong Kong and Taiwan. Rest of Asia Pacific includes Australia and those Asian countries not included in the Company’s other reportable segments. Although the reportable segments provide similar hardware and software products and similar services, each one is managed separately to better align with the location of the Company’s customers and distribution partners and the unique market dynamics of each geographic region. The accounting policies of the various segments are the same as those described in Note 1, “Summary of Significant Accounting Policies” of the Notes to Consolidated Financial Statements in Part II, Item 8 of the 2020 Form 10-K. The Company evaluates the performance of its reportable segments based on net sales and operating income. Net sales for geographic segments are generally based on the location of customers and sales through the Company’s retail stores located in those geographic locations. Operating income for each segment includes net sales to third parties, related cost of sales and operating expenses directly attributable to the segment. Advertising expenses are generally included in the geographic segment in which the expenditures are incurred. Operating income for each segment excludes other income and expense and certain expenses managed outside the reportable segments. Costs excluded from segment operating income include various corporate expenses such as research and development, corporate marketing expenses, certain share-based compensation expenses, income taxes, various nonrecurring charges and other separately managed general and administrative costs. The Company does not include intercompany transfers between segments for management reporting purposes.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	3 Months Ended
Summary of Significant Accounting Policies (Tables)	Dec. 26, 2020
Accounting Policies [Abstract]
Computation of Basic and Diluted Earnings Per Share	The following table shows the computation of basic and diluted earnings per share for the three months ended December 26, 2020 and December 28, 2019 (net income in millions and shares in thousands): Three Months Ended December 26, December 28, Numerator: Net income $ 28,755 $ 22,236 Denominator: Weighted-average basic shares outstanding 16,935,119 17,660,160 Effect of dilutive securities 178,569 158,257 Weighted-average diluted shares 17,113,688 17,818,417 Basic earnings per share $ 1.70 $ 1.26 Diluted earnings per share $ 1.68 $ 1.25

Revenue Recognition (Tables)

Revenue Recognition (Tables)	3 Months Ended
Revenue Recognition (Tables)	Dec. 26, 2020
Revenue from Contract with Customer [Abstract]
Net Sales Disaggregated by Significant Products and Services	Net sales disaggregated by significant products and services for the three months ended December 26, 2020 and December 28, 2019 were as follows (in millions): Three Months Ended December 26, December 28, iPhone (1) $ 65,597 $ 55,957 Mac (1) 8,675 7,160 iPad (1) 8,435 5,977 Wearables, Home and Accessories (1)(2) 12,971 10,010 Services (3) 15,761 12,715 Total net sales (4) $ 111,439 $ 91,819 (1) Products net sales include amortization of the deferred value of unspecified software upgrade rights, which are bundled in the sales price of the respective product. (2) Wearables, Home and Accessories net sales include sales of AirPods ® , Apple TV ® , Apple Watch ® , Beats ® products, HomePod ® , iPod touch ® and Apple-branded and third-party accessories. (3) Services net sales include sales from the Company’s advertising, AppleCare ® , digital content and other services. Services net sales also include amortization of the deferred value of Maps, Siri, and free iCloud storage and Apple TV+ SM services, which are bundled in the sales price of certain products. (4) Includes $2.5 billion of revenue recognized in the three months ended December 26, 2020 that was included in deferred revenue as of September 26, 2020 and $1.9 billion of revenue recognized in the three months ended December 28, 2019 that was included in deferred revenue as of September 28, 2019.

Financial Instruments (Tables)

Financial Instruments (Tables)	3 Months Ended
Financial Instruments (Tables)	Dec. 26, 2020
Investments, All Other Investments [Abstract]
Cash and Marketable Securities by Significant Investment Category	The following tables show the Company’s cash and marketable securities by significant investment category as of December 26, 2020 and September 26, 2020 (in millions): December 26, 2020 Adjusted Unrealized Unrealized Fair Cash and Current Non-Current Marketable Cash $ 18,729 $ — $ — $ 18,729 $ 18,729 $ — $ — Level 1 (1) : Money market funds 6,312 — — 6,312 6,312 — — Level 2 (2) : U.S. Treasury securities 21,939 270 (6) 22,203 3,227 8,527 10,449 U.S. agency securities 8,698 9 (1) 8,706 1,000 3,319 4,387 Non-U.S. government securities 20,185 395 (67) 20,513 100 2,874 17,539 Certificates of deposit and time deposits 8,002 — — 8,002 5,009 2,623 370 Commercial paper 8,620 — — 8,620 1,632 6,988 — Corporate debt securities 83,042 2,155 (44) 85,153 1 16,117 69,035 Municipal securities 1,004 20 — 1,024 — 94 930 Mortgage- and asset-backed securities 16,051 281 (23) 16,309 — 274 16,035 Subtotal 167,541 3,130 (141) 170,530 10,969 40,816 118,745 Total (3) $ 192,582 $ 3,130 $ (141) $ 195,571 $ 36,010 $ 40,816 $ 118,745 September 26, 2020 Adjusted Unrealized Unrealized Fair Cash and Current Non-Current Cash $ 17,773 $ — $ — $ 17,773 $ 17,773 $ — $ — Level 1 (1) : Money market funds 2,171 — — 2,171 2,171 — — Level 2 (2) : U.S. Treasury securities 28,439 331 — 28,770 8,580 11,972 8,218 U.S. agency securities 8,604 8 — 8,612 2,009 3,078 3,525 Non-U.S. government securities 19,361 275 (186) 19,450 255 3,329 15,866 Certificates of deposit and time deposits 10,399 — — 10,399 4,043 6,246 110 Commercial paper 11,226 — — 11,226 3,185 8,041 — Corporate debt securities 76,937 1,834 (175) 78,596 — 19,687 58,909 Municipal securities 1,001 22 — 1,023 — 139 884 Mortgage- and asset-backed securities 13,520 314 (24) 13,810 — 435 13,375 Subtotal 169,487 2,784 (385) 171,886 18,072 52,927 100,887 Total (3) $ 189,431 $ 2,784 $ (385) $ 191,830 $ 38,016 $ 52,927 $ 100,887 (1) Level 1 fair value estimates are based on quoted prices in active markets for identical assets or liabilities. (2) Level 2 fair value estimates are based on observable inputs other than quoted prices in active markets for identical assets and liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. (3) As of December 26, 2020 and September 26, 2020, total marketable securities included $19.5 billion and $18.6 billion, respectively, that was restricted from general use, related to the State Aid Decision (refer to Note 5, “Income Taxes”) and other agreements.
Cash, Cash Equivalents and Restricted Cash Reconciliation	A reconciliation of the Company’s cash and cash equivalents in the Condensed Consolidated Balance Sheets to cash, cash equivalents and restricted cash in the Condensed Consolidated Statements of Cash Flows as of December 26, 2020 and September 26, 2020 is as follows (in millions): December 26, September 26, Cash and cash equivalents $ 36,010 $ 38,016 Restricted cash 1,709 1,773 Cash, cash equivalents and restricted cash $ 37,719 $ 39,789
Derivative Instruments at Gross Fair Value	The following tables show the Company’s derivative instruments at gross fair value as of December 26, 2020 and September 26, 2020 (in millions): December 26, 2020 Fair Value of Fair Value of Total Derivative assets (1) : Foreign exchange contracts $ 524 $ 780 $ 1,304 Interest rate contracts $ 1,443 $ — $ 1,443 Derivative liabilities (2) : Foreign exchange contracts $ 2,332 $ 1,314 $ 3,646 September 26, 2020 Fair Value of Fair Value of Total Derivative assets (1) : Foreign exchange contracts $ 749 $ 303 $ 1,052 Interest rate contracts $ 1,557 $ — $ 1,557 Derivative liabilities (2) : Foreign exchange contracts $ 1,561 $ 485 $ 2,046 (1) The fair value of derivative assets is measured using Level 2 fair value inputs and is included in other current assets and other non-current assets in the Condensed Consolidated Balance Sheets. (2) The fair value of derivative liabilities is measured using Level 2 fair value inputs and is included in other current liabilities and other non-current liabilities in the Condensed Consolidated Balance Sheets.
Pre-Tax Gains and Losses of Derivative and Non-Derivative Instruments Designated as Cash Flow and Net Investment Hedges	The following table shows the pre-tax gains and losses of the Company’s derivative and non-derivative instruments designated as cash flow and net investment hedges in OCI and the Condensed Consolidated Statements of Operations for the three months ended December 26, 2020 and December 28, 2019 (in millions): Three Months Ended December 26, December 28, Gains/(Losses) recognized in OCI – included in effectiveness assessment: Cash flow hedges: Foreign exchange contracts $ (191) $ 271 Interest rate contracts 54 — Total $ (137) $ 271 Net investment hedges: Foreign currency debt $ — $ 24 Gains/(Losses) reclassified from AOCI into net income – included in effectiveness assessment: Cash flow hedges: Foreign exchange contracts $ 314 $ 491 Interest rate contracts (3) (2) Total $ 311 $ 489
Derivative Instruments Designated as Fair Value Hedges and the Related Hedged Items	The following tables show information about the Company’s derivative instruments designated as fair value hedges and the related hedged items for the three months ended December 26, 2020 and December 28, 2019 and as of December 26, 2020 and September 26, 2020 (in millions): Three Months Ended December 26, December 28, Gains/(Losses) on derivative instruments (1) : Foreign exchange contracts $ (753) $ (183) Interest rate contracts (167) (162) Total $ (920) $ (345) Gains/(Losses) related to hedged items (1) : Marketable securities $ 752 $ 183 Fixed-rate debt 167 162 Total $ 919 $ 345 December 26, September 26, Carrying amounts of hedged assets/(liabilities): Marketable securities (2) $ 17,009 $ 16,270 Fixed-rate debt (3) $ (20,866) $ (21,033) Cumulative hedging adjustments included in the carrying amounts of hedged items: Marketable securities carrying amount increases/(decreases) $ 956 $ 493 Fixed-rate debt carrying amount (increases)/decreases $ (1,374) $ (1,541) (1) Gains and losses related to fair value hedges are included in OI&E in the Condensed Consolidated Statements of Operations. (2) The carrying amounts of marketable securities that are designated as hedged items in fair value hedges are included in current marketable securities and non-current marketable securities in the Condensed Consolidated Balance Sheets (3) The carrying amounts of fixed-rate debt instruments that are designated as hedged items in fair value hedges are included in current term debt and non-current term debt in the Condensed Consolidated Balance Sheets.
Notional Amounts of Outstanding Derivative Instruments and Credit Risk Amounts Associated with Outstanding or Unsettled Derivative Instruments	The following table shows the notional amounts of the Company’s outstanding derivative instruments and credit risk amounts associated with outstanding or unsettled derivative instruments as of December 26, 2020 and September 26, 2020 (in millions): December 26, 2020 September 26, 2020 Notional Credit Risk Notional Credit Risk Instruments designated as accounting hedges: Foreign exchange contracts $ 71,191 $ 524 $ 57,410 $ 749 Interest rate contracts $ 20,900 $ 1,443 $ 20,700 $ 1,557 Instruments not designated as accounting hedges: Foreign exchange contracts $ 123,267 $ 780 $ 88,636 $ 303

Condensed Consolidated Financ_2

Condensed Consolidated Financial Statement Details (Tables)	3 Months Ended
Condensed Consolidated Financial Statement Details (Tables)	Dec. 26, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Property, Plant and Equipment, Net	Property, Plant and Equipment, Net December 26, September 26, Land and buildings $ 18,885 $ 17,952 Machinery, equipment and internal-use software 76,224 75,291 Leasehold improvements 10,384 10,283 Gross property, plant and equipment 105,493 103,526 Accumulated depreciation and amortization (67,560) (66,760) Total property, plant and equipment, net $ 37,933 $ 36,766
Other Non-Current Liabilities	Other Non-Current Liabilities December 26, September 26, Long-term taxes payable $ 28,170 $ 28,170 Other non-current liabilities 27,872 26,320 Total other non-current liabilities $ 56,042 $ 54,490
Other Income/(Expense), Net	Other Income/(Expense), Net The following table shows the detail of OI&E for the three months ended December 26, 2020 and December 28, 2019 (in millions): Three Months Ended December 26, December 28, Interest and dividend income $ 747 $ 1,045 Interest expense (638) (785) Other income/(expense), net (64) 89 Total other income/(expense), net $ 45 $ 349

Debt (Tables)

Debt (Tables)	3 Months Ended
Debt (Tables)	Dec. 26, 2020
Debt Disclosure [Abstract]
Summary of Cash Flows Associated with Issuance and Maturities of Commercial Paper	The following table provides a summary of cash flows associated with the issuance and maturities of Commercial Paper for the three months ended December 26, 2020 and December 28, 2019 (in millions): Three Months Ended December 26, December 28, Maturities 90 days or less: Proceeds from/(Repayments of) commercial paper, net $ 1,439 $ (175) Maturities greater than 90 days: Proceeds from commercial paper 780 1,317 Repayments of commercial paper (2,197) (2,121) Repayments of commercial paper, net (1,417) (804) Total proceeds from/(repayments of) commercial paper, net $ 22 $ (979)
Summary of Term Debt	The following table provides a summary of the Company’s term debt as of December 26, 2020 and September 26, 2020: Maturities (calendar year) December 26, 2020 September 26, 2020 Amount (in millions) Effective Amount (in millions) Effective 2013 – 2020 debt issuances: Floating-rate notes 2021 – 2022 $ 2,250 0.56% – 1.34% $ 2,250 0.60% – 1.39% Fixed-rate 0.000% – 4.650% notes 2021 – 2060 103,613 0.03% – 4.78% 103,828 0.03% – 4.78% Total term debt 105,863 106,078 Unamortized premium/(discount) and issuance costs, net (305) (314) Hedge accounting fair value adjustments 1,485 1,676 Less: Current portion of term debt (7,762) (8,773) Total non-current portion of term debt $ 99,281 $ 98,667

Comprehensive Income (Tables)

Comprehensive Income (Tables)	3 Months Ended
Comprehensive Income (Tables)	Dec. 26, 2020
Equity [Abstract]
Pre-Tax Amounts Reclassified from AOCI into the Condensed Consolidated Statements of Operations	The following table shows the pre-tax amounts reclassified from AOCI into the Condensed Consolidated Statements of Operations, and the associated financial statement line items, for the three months ended December 26, 2020 and December 28, 2019 (in millions): Three Months Ended Comprehensive Income Components Financial Statement Line Items December 26, December 28, Unrealized (gains)/losses on derivative instruments: Foreign exchange contracts Total net sales $ 104 $ (97) Total cost of sales 245 (171) Other income/(expense), net (628) (223) Interest rate contracts Other income/(expense), net 3 2 (276) (489) Unrealized (gains)/losses on marketable debt securities Other income/(expense), net (118) (13) Total amounts reclassified from AOCI $ (394) $ (502)
Changes in AOCI by Component	The following table shows the changes in AOCI by component for the three months ended December 26, 2020 (in millions): Cumulative Foreign Unrealized Gains/Losses Unrealized Gains/Losses Total Balances as of September 26, 2020 $ (1,375) $ (877) $ 1,846 $ (406) Other comprehensive income/(loss) before reclassifications 549 (294) 708 963 Amounts reclassified from AOCI — (276) (118) (394) Tax effect — 83 (67) 16 Other comprehensive income/(loss) 549 (487) 523 585 Balances as of December 26, 2020 $ (826) $ (1,364) $ 2,369 $ 179

Benefit Plans (Tables)

Benefit Plans (Tables)	3 Months Ended
Benefit Plans (Tables)	Dec. 26, 2020
Share-based Payment Arrangement [Abstract]
Restricted Stock Unit Activity	A summary of the Company’s RSU activity and related information for the three months ended December 26, 2020 is as follows: Number of RSUs (in thousands) Weighted-Average Aggregate Fair Value (in millions) Balance as of September 26, 2020 310,778 $ 51.58 RSUs granted 75,959 $ 112.75 RSUs vested (68,565) $ 44.91 RSUs canceled (2,819) $ 61.05 Balance as of December 26, 2020 315,353 $ 67.68 $ 41,617
Summary of Share-Based Compensation Expense and the Related Income Tax Benefit	The following table shows share-based compensation expense and the related income tax benefit included in the Condensed Consolidated Statements of Operations for the three months ended December 26, 2020 and December 28, 2019 (in millions): Three Months Ended December 26, December 28, Share-based compensation expense $ 2,020 $ 1,710 Income tax benefit related to share-based compensation expense $ (1,624) $ (758)

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
Commitments and Contingencies (Tables)	Dec. 26, 2020
Commitments and Contingencies Disclosure [Abstract]
Changes in Accrued Warranties and Related Costs	The following table shows changes in the Company’s accrued warranties and related costs for the three months ended December 26, 2020 and December 28, 2019 (in millions): Three Months Ended December 26, December 28, Beginning accrued warranty and related costs $ 3,354 $ 3,570 Cost of warranty claims (723) (915) Accruals for product warranty 1,493 1,218 Ending accrued warranty and related costs $ 4,124 $ 3,873

Segment Information and Geogr_2

Segment Information and Geographic Data (Tables)	3 Months Ended
Segment Information and Geographic Data (Tables)	Dec. 26, 2020
Segment Reporting [Abstract]
Summary Information by Reportable Segment	The following table shows information by reportable segment for the three months ended December 26, 2020 and December 28, 2019 (in millions): Three Months Ended December 26, December 28, Americas: Net sales $ 46,310 $ 41,367 Operating income $ 15,785 $ 13,092 Europe: Net sales $ 27,306 $ 23,273 Operating income $ 9,589 $ 7,719 Greater China: Net sales $ 21,313 $ 13,578 Operating income $ 8,530 $ 5,363 Japan: Net sales $ 8,285 $ 6,223 Operating income $ 3,503 $ 2,778 Rest of Asia Pacific: Net sales $ 8,225 $ 7,378 Operating income $ 2,953 $ 2,731
Reconciliation of Segment Operating Income to the Condensed Consolidated Statements of Operations	A reconciliation of the Company’s segment operating income to the Condensed Consolidated Statements of Operations for the three months ended December 26, 2020 and December 28, 2019 is as follows (in millions): Three Months Ended December 26, December 28, Segment operating income $ 40,360 $ 31,683 Research and development expense (5,163) (4,451) Other corporate expenses, net (1,663) (1,663) Total operating income $ 33,534 $ 25,569

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Additional Information (Details)	Aug. 28, 2020
Significant Accounting Policies [Line Items]
Common stock split ratio	4

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
Numerator:
Net income	$ 28,755	$ 22,236
Denominator:
Weighted-average basic shares outstanding (in shares)	16,935,119	17,660,160
Effect of dilutive securities (in shares)	178,569	158,257
Weighted-average diluted shares (in shares)	17,113,688	17,818,417
Basic earnings per share (in dollars per share)	$ 1.70	$ 1.26
Diluted earnings per share (in dollars per share)	$ 1.68	$ 1.25

Revenue Recognition - Additiona

Revenue Recognition - Additional Information (Details) $ in Billions	Dec. 26, 2020USD ($)obligation	Sep. 26, 2020USD ($)
Revenue from Contract with Customer [Abstract]
Performance obligations in arrangements (up to) \| obligation	3
Total deferred revenue \| $	$ 11.6	$ 10.2

Revenue Recognition - Deferred

Revenue Recognition - Deferred Revenue, Expected Timing of Realization (Details)	Dec. 26, 2020
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-12-27
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred revenue, expected timing of realization, percentage	64.00%
Deferred revenue, expected timing of realization, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-12-26
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred revenue, expected timing of realization, percentage	26.00%
Deferred revenue, expected timing of realization, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred revenue, expected timing of realization, percentage	8.00%
Deferred revenue, expected timing of realization, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-12-31
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred revenue, expected timing of realization, percentage	2.00%
Deferred revenue, expected timing of realization, period

Revenue Recognition - Net Sales

Revenue Recognition - Net Sales Disaggregated by Significant Products and Services (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 111,439	$ 91,819
Revenue recognized that was included in deferred revenue at the beginning of the period	2,500	1,900
iPhone
Disaggregation of Revenue [Line Items]
Net sales	65,597	55,957
Mac
Disaggregation of Revenue [Line Items]
Net sales	8,675	7,160
iPad
Disaggregation of Revenue [Line Items]
Net sales	8,435	5,977
Wearables, Home and Accessories
Disaggregation of Revenue [Line Items]
Net sales	12,971	10,010
Services
Disaggregation of Revenue [Line Items]
Net sales	$ 15,761	$ 12,715

Financial Instruments - Cash, C

Financial Instruments - Cash, Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Millions	Dec. 26, 2020	Sep. 26, 2020
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	$ 192,582	$ 189,431
Unrealized Gains	3,130	2,784
Unrealized Losses	(141)	(385)
Fair Value	195,571	191,830
Cash and Cash Equivalents	36,010	38,016
Current Marketable Securities	40,816	52,927
Non-Current Marketable Securities	118,745	100,887
Total marketable securities that were restricted from general use	19,500	18,600
Level 2
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	167,541	169,487
Unrealized Gains	3,130	2,784
Unrealized Losses	(141)	(385)
Fair Value	170,530	171,886
Cash and Cash Equivalents	10,969	18,072
Current Marketable Securities	40,816	52,927
Non-Current Marketable Securities	118,745	100,887
Cash
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	18,729	17,773
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	18,729	17,773
Cash and Cash Equivalents	18,729	17,773
Current Marketable Securities	0	0
Non-Current Marketable Securities	0	0
Money market funds \| Level 1
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	6,312	2,171
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	6,312	2,171
Cash and Cash Equivalents	6,312	2,171
Current Marketable Securities	0	0
Non-Current Marketable Securities	0	0
U.S. Treasury securities \| Level 2
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	21,939	28,439
Unrealized Gains	270	331
Unrealized Losses	(6)	0
Fair Value	22,203	28,770
Cash and Cash Equivalents	3,227	8,580
Current Marketable Securities	8,527	11,972
Non-Current Marketable Securities	10,449	8,218
U.S. agency securities \| Level 2
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	8,698	8,604
Unrealized Gains	9	8
Unrealized Losses	(1)	0
Fair Value	8,706	8,612
Cash and Cash Equivalents	1,000	2,009
Current Marketable Securities	3,319	3,078
Non-Current Marketable Securities	4,387	3,525
Non-U.S. government securities \| Level 2
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	20,185	19,361
Unrealized Gains	395	275
Unrealized Losses	(67)	(186)
Fair Value	20,513	19,450
Cash and Cash Equivalents	100	255
Current Marketable Securities	2,874	3,329
Non-Current Marketable Securities	17,539	15,866
Certificates of deposit and time deposits \| Level 2
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	8,002	10,399
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	8,002	10,399
Cash and Cash Equivalents	5,009	4,043
Current Marketable Securities	2,623	6,246
Non-Current Marketable Securities	370	110
Commercial paper \| Level 2
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	8,620	11,226
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	8,620	11,226
Cash and Cash Equivalents	1,632	3,185
Current Marketable Securities	6,988	8,041
Non-Current Marketable Securities	0	0
Corporate debt securities \| Level 2
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	83,042	76,937
Unrealized Gains	2,155	1,834
Unrealized Losses	(44)	(175)
Fair Value	85,153	78,596
Cash and Cash Equivalents	1	0
Current Marketable Securities	16,117	19,687
Non-Current Marketable Securities	69,035	58,909
Municipal securities \| Level 2
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	1,004	1,001
Unrealized Gains	20	22
Unrealized Losses	0	0
Fair Value	1,024	1,023
Cash and Cash Equivalents	0	0
Current Marketable Securities	94	139
Non-Current Marketable Securities	930	884
Mortgage- and asset-backed securities \| Level 2
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	16,051	13,520
Unrealized Gains	281	314
Unrealized Losses	(23)	(24)
Fair Value	16,309	13,810
Cash and Cash Equivalents	0	0
Current Marketable Securities	274	435
Non-Current Marketable Securities	$ 16,035	$ 13,375

Financial Instruments - Additio

Financial Instruments - Additional Information (Details) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 26, 2020USD ($)CustomerVendor	Dec. 28, 2019USD ($)	Sep. 26, 2020USD ($)VendorCustomer
Financial Instruments [Line Items]
Non-marketable equity securities, carrying value	$ 2,500		$ 2,800
Hedged interest rate transactions, expected recognition period	7 years
Amounts excluded from the effectiveness assessment of fair value hedges and recognized in OI&E, gains/(losses)	$ 82	$ 128
Amounts excluded from the effectiveness assessment of the Company’s hedges and recognized in OCI, gains/(losses)	(138)	$ (89)
Net cash collateral posted, derivative instruments	215
Net cash collateral received, derivative instruments			875
Potential reduction to derivative assets resulting from rights of set-off under master netting arrangements	3,500		2,800
Potential reduction to derivative liabilities resulting from rights of set-off under master netting arrangements	3,500		2,800
Net derivative assets/(liabilities) after potential reductions under master netting arrangements	$ (684)		$ (312)
Trade receivables \| Credit concentration risk
Financial Instruments [Line Items]
Number of customers that individually represented 10% or more of total trade receivables \| Customer	0		0
Trade receivables \| Credit concentration risk \| Cellular network carriers
Financial Instruments [Line Items]
Concentration risk, percentage	41.00%
Non-trade receivables \| Credit concentration risk
Financial Instruments [Line Items]
Number of vendors that individually represented 10% or more of total vendor non-trade receivables \| Vendor	2		2
Non-trade receivables \| Credit concentration risk \| Vendor one
Financial Instruments [Line Items]
Concentration risk, percentage	61.00%		57.00%
Non-trade receivables \| Credit concentration risk \| Vendor two
Financial Instruments [Line Items]
Concentration risk, percentage	14.00%		11.00%
Hedges of foreign currency exposure associated with revenue and inventory purchases
Financial Instruments [Line Items]
Hedged foreign currency transactions, expected recognition period	12 months
Hedges of foreign currency exposure associated with term debt and marketable securities
Financial Instruments [Line Items]
Hedged foreign currency transactions, expected recognition period	22 years
Minimum
Financial Instruments [Line Items]
General maturities of non-current marketable securities	1 year
Maximum
Financial Instruments [Line Items]
General maturities of non-current marketable securities	5 years

Financial Instruments - Restric

Financial Instruments - Restricted Cash (Details) - USD ($) $ in Millions	Dec. 26, 2020	Sep. 26, 2020	Dec. 28, 2019	Sep. 28, 2019
Supplemental Cash Flow Elements [Abstract]
Cash and cash equivalents	$ 36,010	$ 38,016
Restricted cash	$ 1,709	$ 1,773
Restricted cash and cash equivalents, noncurrent, asset, statement of financial position [Extensible List]	us-gaap:OtherAssetsNoncurrent	us-gaap:OtherAssetsNoncurrent
Cash, cash equivalents and restricted cash	$ 37,719	$ 39,789	$ 41,665	$ 50,224

Financial Instruments - Derivat

Financial Instruments - Derivative Instruments at Gross Fair Value (Details) - Level 2 - USD ($) $ in Millions	Dec. 26, 2020	Sep. 26, 2020
Other current assets and other non-current assets \| Foreign exchange contracts
Derivative assets:
Fair value of derivative assets	$ 1,304	$ 1,052
Other current assets and other non-current assets \| Interest rate contracts
Derivative assets:
Fair value of derivative assets	1,443	1,557
Other current assets and other non-current assets \| Derivatives designated as accounting hedges \| Foreign exchange contracts
Derivative assets:
Fair value of derivative assets	524	749
Other current assets and other non-current assets \| Derivatives designated as accounting hedges \| Interest rate contracts
Derivative assets:
Fair value of derivative assets	1,443	1,557
Other current assets and other non-current assets \| Derivatives not designated as accounting hedges \| Foreign exchange contracts
Derivative assets:
Fair value of derivative assets	780	303
Other current assets and other non-current assets \| Derivatives not designated as accounting hedges \| Interest rate contracts
Derivative assets:
Fair value of derivative assets	0	0
Other current liabilities and other non-current liabilities \| Foreign exchange contracts
Derivative liabilities:
Fair value of derivative liabilities	3,646	2,046
Other current liabilities and other non-current liabilities \| Derivatives designated as accounting hedges \| Foreign exchange contracts
Derivative liabilities:
Fair value of derivative liabilities	2,332	1,561
Other current liabilities and other non-current liabilities \| Derivatives not designated as accounting hedges \| Foreign exchange contracts
Derivative liabilities:
Fair value of derivative liabilities	$ 1,314	$ 485

Financial Instruments - Pre-Tax

Financial Instruments - Pre-Tax Gains and Losses of Derivative and Non-Derivative Instruments Designated as Cash Flow and Net Investment Hedges (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) recognized in OCI – included in effectiveness assessment, cash flow hedges	$ (137)	$ 271
Gains/(Losses) reclassified from AOCI into net income – included in effectiveness assessment, cash flow hedges	311	489
Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) recognized in OCI – included in effectiveness assessment, cash flow hedges	(191)	271
Gains/(Losses) reclassified from AOCI into net income – included in effectiveness assessment, cash flow hedges	314	491
Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) recognized in OCI – included in effectiveness assessment, cash flow hedges	54	0
Gains/(Losses) reclassified from AOCI into net income – included in effectiveness assessment, cash flow hedges	(3)	(2)
Foreign currency debt
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) recognized in OCI – included in effectiveness assessment, net investment hedges	$ 0	$ 24

Financial Instruments - Deriv_2

Financial Instruments - Derivative Instruments Designated as Fair Value Hedges and Related Hedged Items (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Sep. 26, 2020
Foreign exchange contracts
Carrying amounts of hedged assets/(liabilities) and cumulative hedging adjustments:
Cumulative hedging adjustment increases/(decreases) included in the carrying amount of hedged marketable securities	$ 956		$ 493
Interest rate contracts
Carrying amounts of hedged assets/(liabilities) and cumulative hedging adjustments:
Cumulative hedging adjustment (increases)/decreases included in the carrying amount of hedged fixed-rate debt	(1,374)		(1,541)
Current marketable securities and non-current marketable securities \| Foreign exchange contracts
Carrying amounts of hedged assets/(liabilities) and cumulative hedging adjustments:
Carrying amount of hedged marketable securities	17,009		16,270
Current term debt and non-current term debt \| Interest rate contracts
Carrying amounts of hedged assets/(liabilities) and cumulative hedging adjustments:
Carrying amount of hedged fixed-rate debt	(20,866)		$ (21,033)
OI&E
Gains/(Losses) related to derivative instruments and hedged items:
Gains/(Losses) on derivative instruments	(920)	$ (345)
Gains/(Losses) related to hedged items	919	345
OI&E \| Foreign exchange contracts
Gains/(Losses) related to derivative instruments and hedged items:
Gains/(Losses) on derivative instruments	(753)	(183)
Gains/(Losses) related to hedged items	752	183
OI&E \| Interest rate contracts
Gains/(Losses) related to derivative instruments and hedged items:
Gains/(Losses) on derivative instruments	(167)	(162)
Gains/(Losses) related to hedged items	$ 167	$ 162

Financial Instruments - Notiona

Financial Instruments - Notional Amounts and Credit Risk Amounts Associated with Derivative Instruments (Details) - USD ($) $ in Millions	Dec. 26, 2020	Sep. 26, 2020
Derivatives designated as accounting hedges \| Foreign exchange contracts
Derivative [Line Items]
Derivatives, notional amount	$ 71,191	$ 57,410
Derivatives, credit risk amount	524	749
Derivatives designated as accounting hedges \| Interest rate contracts
Derivative [Line Items]
Derivatives, notional amount	20,900	20,700
Derivatives, credit risk amount	1,443	1,557
Derivatives not designated as accounting hedges \| Foreign exchange contracts
Derivative [Line Items]
Derivatives, notional amount	123,267	88,636
Derivatives, credit risk amount	$ 780	$ 303

Condensed Consolidated Financ_3

Condensed Consolidated Financial Statement Details - Property, Plant and Equipment, Net (Details) - USD ($) $ in Millions	Dec. 26, 2020	Sep. 26, 2020
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 105,493	$ 103,526
Accumulated depreciation and amortization	(67,560)	(66,760)
Total property, plant and equipment, net	37,933	36,766
Land and buildings
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	18,885	17,952
Machinery, equipment and internal-use software
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	76,224	75,291
Leasehold improvements
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 10,384	$ 10,283

Condensed Consolidated Financ_4

Condensed Consolidated Financial Statement Details - Other Non-Current Liabilities (Details) - USD ($) $ in Millions	Dec. 26, 2020	Sep. 26, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Long-term taxes payable	$ 28,170	$ 28,170
Other non-current liabilities	27,872	26,320
Total other non-current liabilities	$ 56,042	$ 54,490

Condensed Consolidated Financ_5

Condensed Consolidated Financial Statement Details - Other Income/(Expense), Net (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Interest and dividend income	$ 747	$ 1,045
Interest expense	(638)	(785)
Other income/(expense), net	(64)	89
Total other income/(expense), net	$ 45	$ 349

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) € in Billions, $ in Billions	Aug. 30, 2016EUR (€)Subsidiary	Dec. 26, 2020USD ($)	Dec. 26, 2020EUR (€)
Income Tax Contingency [Line Items]
Gross unrecognized tax benefits		$ 17.1
Gross unrecognized tax benefits that would impact effective tax rate, if recognized		9
Gross interest and penalties accrued		1.6
Reasonably possible decrease in gross unrecognized tax benefits over next 12 months		$ 4.1
Unfavorable investigation outcome, EU State Aid rules
Income Tax Contingency [Line Items]
Number of subsidiaries impacted by European Commission tax ruling \| Subsidiary	2
Maximum potential loss related to European Commission tax ruling \| €	€ 13.1		€ 12.9
Unfavorable investigation outcome, EU State Aid rules - interest component
Income Tax Contingency [Line Items]
Maximum potential loss related to European Commission tax ruling \| €	€ 1.2

Debt - Additional Information (

Debt - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Sep. 26, 2020
Debt Instrument [Line Items]
Commercial paper	$ 5,000		$ 4,996
Floating- and fixed-rate notes, aggregate principal amount	105,863		106,078
Interest cost on term debt	628	$ 757
Commercial paper
Debt Instrument [Line Items]
Commercial paper	$ 5,000		$ 5,000
Commercial paper, general maturity period (less than)	9 months
Commercial paper, weighted-average interest rate	0.10%		0.62%
Level 2
Debt Instrument [Line Items]
Floating- and fixed-rate notes, aggregate fair value	$ 117,200		$ 117,100

Debt - Summary of Cash Flows As

Debt - Summary of Cash Flows Associated with Commercial Paper (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
Maturities 90 days or less:
Proceeds from/(Repayments of) commercial paper, net	$ 1,439	$ (175)
Maturities greater than 90 days:
Proceeds from commercial paper	780	1,317
Repayments of commercial paper	(2,197)	(2,121)
Repayments of commercial paper, net	(1,417)	(804)
Total proceeds from/(repayments of) commercial paper, net	$ 22	$ (979)

Debt - Summary of Term Debt (De

Debt - Summary of Term Debt (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 26, 2020	Sep. 26, 2020
Debt Instrument [Line Items]
Total term debt	$ 105,863	$ 106,078
Unamortized premium/(discount) and issuance costs, net	(305)	(314)
Hedge accounting fair value adjustments	1,485	1,676
Less: Current portion of term debt	(7,762)	(8,773)
Total non-current portion of term debt	99,281	98,667
2013 – 2020 debt issuances \| Floating-rate notes
Debt Instrument [Line Items]
Total term debt	$ 2,250	$ 2,250
Debt instrument, maturity year (calendar), start	2021
Debt instrument, maturity year (calendar), end	2022
2013 – 2020 debt issuances \| Floating-rate notes \| Minimum
Debt Instrument [Line Items]
Debt instrument, effective interest rate	0.56%	0.60%
2013 – 2020 debt issuances \| Floating-rate notes \| Maximum
Debt Instrument [Line Items]
Debt instrument, effective interest rate	1.34%	1.39%
2013 – 2020 debt issuances \| Fixed-rate notes
Debt Instrument [Line Items]
Total term debt	$ 103,613	$ 103,828
Debt instrument, maturity year (calendar), start	2021
Debt instrument, maturity year (calendar), end	2060
2013 – 2020 debt issuances \| Fixed-rate notes \| Minimum
Debt Instrument [Line Items]
Debt instrument, stated interest rate	0.00%
Debt instrument, effective interest rate	0.03%	0.03%
2013 – 2020 debt issuances \| Fixed-rate notes \| Maximum
Debt Instrument [Line Items]
Debt instrument, stated interest rate	4.65%
Debt instrument, effective interest rate	4.78%	4.78%

Shareholders' Equity - Addition

Shareholders' Equity - Additional Information (Details) shares in Millions	3 Months Ended
	Dec. 26, 2020USD ($)shares
Share Repurchase Program [Line Items]
Amount authorized for repurchase of common stock (up to)	$ 225,000,000,000
Share repurchase program, amount utilized	$ 192,600,000,000
Number of shares repurchased (in shares) \| shares	200
Amount of share repurchases	$ 24,000,000,000

Comprehensive Income - Pre-tax

Comprehensive Income - Pre-tax Amounts Reclassified from AOCI into the Condensed Consolidated Statements of Operations (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total cost of sales	$ 67,111	$ 56,602
Other income/(expense), net	(45)	(349)
Total amounts reclassified from AOCI	(33,579)	(25,918)
Reclassifications out of AOCI
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total amounts reclassified from AOCI	(394)	(502)
Reclassifications out of AOCI \| Unrealized (gains)/losses on derivative instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total amounts reclassified from AOCI	(276)	(489)
Reclassifications out of AOCI \| Unrealized (gains)/losses on derivative instruments \| Foreign exchange contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total net sales	104	(97)
Total cost of sales	245	(171)
Other income/(expense), net	(628)	(223)
Reclassifications out of AOCI \| Unrealized (gains)/losses on derivative instruments \| Interest rate contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income/(expense), net	3	2
Reclassifications out of AOCI \| Unrealized (gains)/losses on marketable debt securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income/(expense), net	$ (118)	$ (13)

Comprehensive Income - Change i

Comprehensive Income - Change in AOCI by Component (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balances	$ 65,339	$ 90,488
Total other comprehensive income/(loss)	585	30
Ending balances	66,224	89,531
Cumulative Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balances	(1,375)
Other comprehensive income/(loss) before reclassifications	549
Amounts reclassified from AOCI	0
Tax effect	0
Total other comprehensive income/(loss)	549
Ending balances	(826)
Unrealized Gains/Losses on Derivative Instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balances	(877)
Other comprehensive income/(loss) before reclassifications	(294)
Amounts reclassified from AOCI	(276)
Tax effect	83
Total other comprehensive income/(loss)	(487)
Ending balances	(1,364)
Unrealized Gains/Losses on Marketable Debt Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balances	1,846
Other comprehensive income/(loss) before reclassifications	708
Amounts reclassified from AOCI	(118)
Tax effect	(67)
Total other comprehensive income/(loss)	523
Ending balances	2,369
Accumulated other comprehensive income/(loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balances	(406)	(584)
Other comprehensive income/(loss) before reclassifications	963
Amounts reclassified from AOCI	(394)
Tax effect	16
Total other comprehensive income/(loss)	585	30
Ending balances	$ 179	$ (418)

Benefit Plans - Additional Info

Benefit Plans - Additional Information (Details) shares in Millions, $ in Billions	3 Months Ended
	Dec. 26, 2020USD ($)shares	Dec. 28, 2019USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance under stock plans (in shares) \| shares	713
Total unrecognized compensation cost related to RSUs and stock options	$ 18.2
Total unrecognized compensation cost related to RSUs and stock options, weighted-average recognition period	2 years 10 months 24 days
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs granted, vesting period	4 years
Number of shares of common stock issued per RSU upon vesting	1
Factor by which each RSU granted reduces, and each RSU canceled or share withheld for taxes increases, the number of shares available for grant	2
Fair value of RSUs as of the respective vesting dates	$ 8.5	$ 4.2

Benefit Plans - Restricted Stoc

Benefit Plans - Restricted Stock Units Activity and Related Information (Details) - Restricted stock units $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Dec. 26, 2020USD ($)$ / sharesshares
Number of Restricted Stock Units
Beginning balance (in shares) \| shares	310,778
RSUs granted (in shares) \| shares	75,959
RSUs vested (in shares) \| shares	(68,565)
RSUs canceled (in shares) \| shares	(2,819)
Ending balance (in shares) \| shares	315,353
Weighted-Average Grant Date Fair Value Per RSU
Beginning balance (in dollars per share) \| $ / shares	$ 51.58
RSUs granted (in dollars per share) \| $ / shares	112.75
RSUs vested (in dollars per share) \| $ / shares	44.91
RSUs canceled (in dollars per share) \| $ / shares	61.05
Ending balance (in dollars per share) \| $ / shares	$ 67.68
Aggregate Fair Value
Aggregate fair value of RSUs \| $	$ 41,617

Benefit Plans - Summary of Shar

Benefit Plans - Summary of Share-Based Compensation Expense and the Related Income Tax Benefit (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
Share-based Payment Arrangement [Abstract]
Share-based compensation expense	$ 2,020	$ 1,710
Income tax benefit related to share-based compensation expense	$ (1,624)	$ (758)

Commitments and Contingencies -

Commitments and Contingencies - Changes in Accrued Warranties and Related Costs (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
Changes in Accrued Warranties and Related Costs [Roll Forward]
Beginning accrued warranty and related costs	$ 3,354	$ 3,570
Cost of warranty claims	(723)	(915)
Accruals for product warranty	1,493	1,218
Ending accrued warranty and related costs	$ 4,124	$ 3,873

Commitments and Contingencies_2

Commitments and Contingencies - Additional Information (Details) $ in Millions, € in Billions	Nov. 18, 2020USD ($)	Aug. 11, 2020USD ($)	Mar. 16, 2020EUR (€)	Feb. 28, 2020USD ($)	Oct. 31, 2020USD ($)	Dec. 26, 2020USD ($)
Commitments and Contingencies Disclosure [Line Items]
Unconditional purchase obligations						$ 8,100
VirnetX \| Pending litigation
Commitments and Contingencies Disclosure [Line Items]
Award from legal proceeding, due to other party					$ 503
iOS Performance Management \| Pending litigation \| Minimum
Commitments and Contingencies Disclosure [Line Items]
Award from legal proceeding, due to other party				$ 310
iOS Performance Management \| Pending litigation \| Maximum
Commitments and Contingencies Disclosure [Line Items]
Award from legal proceeding, due to other party				$ 500
iOS Performance Management \| Settled litigation
Commitments and Contingencies Disclosure [Line Items]
Award from legal proceeding, due to other party	$ 113
French Competition Authority \| Pending litigation
Commitments and Contingencies Disclosure [Line Items]
Award from legal proceeding, due to other party \| €			€ 1.1
Optis \| Pending litigation
Commitments and Contingencies Disclosure [Line Items]
Award from legal proceeding, due to other party		$ 506

Segment Information and Geogr_3

Segment Information and Geographic Data - Summary Information by Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
Segment Reporting Information [Line Items]
Net sales	$ 111,439	$ 91,819
Operating income	33,534	25,569
Americas
Segment Reporting Information [Line Items]
Net sales	46,310	41,367
Operating income	15,785	13,092
Europe
Segment Reporting Information [Line Items]
Net sales	27,306	23,273
Operating income	9,589	7,719
Greater China
Segment Reporting Information [Line Items]
Net sales	21,313	13,578
Operating income	8,530	5,363
Japan
Segment Reporting Information [Line Items]
Net sales	8,285	6,223
Operating income	3,503	2,778
Rest of Asia Pacific
Segment Reporting Information [Line Items]
Net sales	8,225	7,378
Operating income	$ 2,953	$ 2,731

Segment Information and Geogr_4

Segment Information and Geographic Data - Reconciliation of Segment Operating Income to the Condensed Consolidated Statements of Operations (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income	$ 33,534	$ 25,569
Research and development expense	(5,163)	(4,451)
Operating segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income	40,360	31,683
Segment reconciling items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Research and development expense	(5,163)	(4,451)
Corporate non-segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Other corporate expenses, net	$ (1,663)	$ (1,663)