Skyworks Solutions (SWKS) 10-K 17 Nov 23 2023 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Sep. 29, 2023	Nov. 10, 2023	Mar. 31, 2023
Document and Entity Information [Abstract]
Document Transition Report	false
Document Annual Report	true
Trading Symbol	SWKS
Title of 12(b) Security	Common Stock, par value $0.25 per share
Local Phone Number	231-3000
Entity Address, Address Line One	5260 California Avenue
Entity Incorporation, State or Country Code	DE
Entity Registrant Name	Skyworks Solutions, Inc.
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity Central Index Key	0000004127
Document Type	10-K
Document Period End Date	Sep. 29, 2023
Entity File Number	001-05560
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--09-29
Document Financial Statement Error Correction [Flag]	false
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 18.7
Entity Common Stock, Shares Outstanding		159,954,867
Entity Tax Identification Number	04-2302115
Entity Address, City or Town	Irvine
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92617
City Area Code	(949)
Security Exchange Name	NASDAQ
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true

Audit Information

Audit Information	12 Months Ended
	Sep. 29, 2023
Auditor [Line Items]
Auditor Location	Irvine, California
Auditor Name	KPMG LLP
Auditor Firm ID	185

Consolidated Statements Of Oper

Consolidated Statements Of Operations - USD ($) $ in Thousands, shares in Millions	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021
Income Statement [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 4,772,400	$ 5,485,500	$ 5,109,100
Cost of Goods and Services Sold	2,665,100	2,881,200	2,596,700
Gross profit	2,107,300	2,604,300	2,512,400
Operating expenses:
Research and development	606,800	617,900	532,300
Selling, general and administrative	314,000	329,800	322,500
Amortization of intangibles	33,200	98,900	36,000
Restructuring and other charges	28,300	30,700	8,900
Total operating expenses	982,300	1,077,300	899,700
Operating income	1,125,000	1,527,000	1,612,700
Interest Expense	(64,400)	(47,900)	13,400
Other income (expense), net	18,200	(2,500)	(600)
Income before income taxes	1,078,800	1,476,600	1,598,700
Provision for income taxes	96,000	201,400	100,400
Net income	$ 982,800	$ 1,275,200	$ 1,498,300
Earnings per share:
Basic (in dollars per share)	$ 6.17	$ 7.85	$ 9.07
Diluted (in dollars per share)	$ 6.13	$ 7.81	$ 8.97
Weighted average shares:
Basic (in shares)	159.4	162.4	165.2
Diluted (in shares)	160.3	163.3	167
Cash dividends declared and paid per share (in dollars per share)	$ 2.54	$ 2.30

Consolidated Statement of Other

Consolidated Statement of Other Comprehensive Income Statement - USD ($) $ in Millions	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021
Statement of Comprehensive Income [Abstract]
Net Income	$ 982.8	$ 1,275.2	$ 1,498.3
Other Comprehensive Income, Net of Tax
Fair value of investments	0	(0.2)	(0.5)
Pension adjustments	(0.8)	3.3	0.4
Comprehensive income	$ 982	$ 1,278.3	$ 1,498.2

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands, shares in Millions	Sep. 29, 2023	Sep. 30, 2022
Current assets:
Cash and cash equivalents	$ 718,800	$ 566,000
Marketable Securities, Current	15,600	20,300
Receivables, net of allowance for doubtful accounts of $0.8 and $0.6, respectively	864,300	1,094,000
Inventory	1,119,700	1,212,100
Other current assets	461,100	337,500
Total current assets	3,179,500	3,229,900
Property, plant and equipment, net	1,390,100	1,604,800
Operating Lease, Right-of-Use Asset	205,400	223,000
Goodwill	2,176,700	2,176,700
Intangible assets, net	1,222,100	1,444,700
Deferred tax assets, net	192,300	52,700
Marketable Securities, Noncurrent	4,100	500
Other assets	56,500	141,500
Total assets	8,426,700	8,873,800
Current liabilities:
Accounts payable	159,200	274,200
Accrued compensation and benefits	94,300	114,300
Other current liabilities	402,800	339,200
Debt, Current	299,400	499,200
Total current liabilities	955,700	1,226,900
Long-term tax liabilities	162,800	213,500
Operating Lease, Liability, Noncurrent	188,700	206,900
Other long-term liabilities	43,900	67,600
Long-term Debt	992,900	1,689,900
Total liabilities	2,344,000	3,404,800
Stockholders' equity:
Preferred stock, no par value: 25.0 shares authorized, no shares issued	$ 0	$ 0
Common stock, par value (in dollars per share)	$ 0.25
Common stock, shares issued (in shares)	159.5
Common Stock, Shares, Outstanding	159.5	160.2
Common stock, $0.25 par value: 525.0 shares authorized; 230.2 shares issued and 170.1 shares outstanding at September 27, 2019, and 228.4 shares issued and 177.4 shares outstanding at September 28, 2018	$ 39,900	$ 40,000
Additional paid-in capital	172,400	11,900
Retained earnings	5,876,000	5,421,900
Accumulated other comprehensive loss	(5,600)	(4,800)
Total stockholders' equity	6,082,700	5,469,000
Total liabilities and stockholders' equity	$ 8,426,700	$ 8,873,800

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands, shares in Millions	Sep. 29, 2023	Sep. 30, 2022
Statement of Financial Position [Abstract]
Preferred stock, shares authorized (in shares)	25
Common stock, par value (in dollars per share)	$ 0.25
Common stock, shares authorized (in shares)	525
Common stock, shares issued (in shares)	159.5
Common stock, shares outstanding (in shares)	159.5	160.2
Accounts Receivable, Allowance for Credit Loss	$ 800	$ 800

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021
Cash flows from operating activities:
Net Income	$ 982,800	$ 1,275,200	$ 1,498,300
Adjustments to reconcile net income to net cash provided by operating activities:
Share-based compensation	185,100	195,200	191,900
Depreciation	387,800	394,400	332,200
Amortization of intangible assets	225,900	295,700	104,500
Deferred income taxes	(151,200)	68,400	(59,500)
Asset Impairment Charges	64,500	20,700	7,100
Excess tax benefit from share-based compensation	4,000	4,000	1,100
Other	(3,500)	(1,500)	200
Changes in assets and liabilities net of acquired balances:
Receivables, net	229,800	(337,800)	(397,700)
Inventory	90,800	(337,300)	(41,200)
Accounts payable	(87,100)	31,300	59,600
Increase (Decrease) in Other Operating Assets and Liabilities, Net	72,500	183,700	(75,500)
Net Cash Provided by (Used in) Operating Activities	1,856,400	1,424,600	1,772,000
Cash flows from investing activities:
Capital expenditures	(210,300)	(489,400)	(637,800)
Payments for acquisitions, net of cash acquired	0	0	(2,751,000)
Payments for (Proceeds from) Other Investing Activities	(6,500)	(7,700)	0
Purchased intangibles	(25,800)	(20,300)	(14,300)
Payments to Acquire Marketable Securities	(288,800)	(97,200)	(500,800)
Maturity of investments	294,000	220,300	770,700
Net Cash Provided by (Used in) Investing Activities	(224,400)	(378,900)	(3,133,200)
Cash flows from financing activities:
Repurchase of common stock - payroll tax withholdings on equity awards	(35,900)	(88,500)	(55,200)
Repurchase of common stock - share repurchase program	(175,300)	(886,800)	(195,600)
Dividends paid	(405,200)	(373,100)	(340,600)
Proceeds from Issuance of Common Stock	32,100	29,400	24,800
Proceeds from Issuance of Debt	0	0	2,488,200
Repayments of Long-term Debt	(900,000)	(50,000)	(250,000)
Payments of Financing Costs	0	0	(5,800)
Net proceeds from exercise of stock options	5,100	6,400	11,600
Net Cash Provided by (Used in) Financing Activities	(1,479,200)	(1,362,600)	1,677,400
Net increase in cash and cash equivalents	152,800	(316,900)	316,200
Cash and cash equivalents at beginning of period	566,000	882,900	566,700
Cash and cash equivalents at end of period	718,800	566,000	882,900
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents	718,800	566,000	882,900
Supplemental cash flow disclosures:
Treasury Stock, Retired, Cost Method, Amount		893,400	4,342,600
Income taxes paid	228,900	230,000	184,000
Interest Paid, Excluding Capitalized Interest, Operating Activities	62,300	44,400	2,200
Stock Issued	19,200	32,200	27,500
Capital Expenditures Incurred but Not yet Paid	$ 12,000	$ 43,200	$ 29,300

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity and Comprehensive Income (Loss) Statement - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Loss	Treasury Stock, Common
Beginning balance at Oct. 02, 2020	$ 4,164,200	$ 41,400	$ 3,403,700	$ 4,820,400	$ (7,800)	$ (4,093,500)
Common stock, shares, outstanding beginning balance (in shares) at Oct. 02, 2020		165,600
Treasury stock, shares outstanding, beginning balance (in shares) at Oct. 02, 2020						66,700
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,498,300			1,498,300
Exercise and settlement of share based awards and related tax benefit, net of shares withheld for taxes (in shares)		1,100				400
Exercise and settlement of share based awards and related tax benefit, net of shares withheld for taxes	8,700	$ 300	63,600			$ (55,200)
Share-based Compensation expense	$ 158,100		158,100
Stock Repurchased During Period, Value				792,300
Share repurchase program (in shares)	(1,400)	(1,400)
Share repurchase program	$ (195,600)	$ (400)	(3,549,900)			$ 4,147,000
Stock Repurchased During Period, Shares						(67,100)
Dividends declared	(340,600)			(340,600)
Business Combination Consideration Transferred Replacement Equity Awards	4,100		4,100
Other comprehensive income (loss)	(100)				(100)
Common stock, shares, outstanding ending balance (in shares) at Oct. 01, 2021		165,300
Treasury stock, shares outstanding, ending balance (in shares) at Oct. 01, 2021						0
Ending balance at Oct. 01, 2021	$ 5,297,100	$ 41,300	79,600	5,185,800	(7,900)	$ (1,700)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury Stock, Shares, Retired	(68,500)
Treasury Stock, Retired, Cost Method, Amount	$ (4,342,600)
Net income	1,275,200			1,275,200
Exercise and settlement of share based awards and related tax benefit, net of shares withheld for taxes (in shares)		1,400				600
Exercise and settlement of share based awards and related tax benefit, net of shares withheld for taxes	(20,400)	$ 300	67,800			$ (88,500)
Share-based Compensation expense	173,900		173,900
Stock Repurchased and Retired During Period, Value	$ (886,800)	$ (1,600)	(309,400)	(666,000)		$ (90,200)
Stock Repurchased and Retired During Period, Shares		(6,500)				(600)
Share repurchase program (in shares)	(6,500)
Share repurchase program	$ (886,800)
Dividends declared	(373,100)			(373,100)
Other comprehensive income (loss)	$ 3,100				3,100
Common stock, shares, outstanding ending balance (in shares) at Sep. 30, 2022	160,200	160,200
Treasury stock, shares outstanding, ending balance (in shares) at Sep. 30, 2022						0
Ending balance at Sep. 30, 2022	$ 5,469,000	$ 40,000	11,900	5,421,900	(4,800)	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury Stock, Shares, Retired	(6,200)
Treasury Stock, Retired, Cost Method, Amount	$ (893,400)
Net income	982,800
Exercise and settlement of share based awards and related tax benefit, net of shares withheld for taxes (in shares)		1,200				400
Exercise and settlement of share based awards and related tax benefit, net of shares withheld for taxes	20,700	$ 300	56,300			$ (35,900)
Share-based Compensation expense	191,500		191,500
Stock Repurchased and Retired During Period, Value	$ (175,300)	$ (400)	(87,300)	(123,500)		$ (35,900)
Stock Repurchased and Retired During Period, Shares		(1,900)				(400)
Share repurchase program (in shares)	(1,900)
Share repurchase program	$ (175,300)
Dividends declared	(405,200)			(405,200)
Other comprehensive income (loss)	$ (800)				(800)
Common stock, shares, outstanding ending balance (in shares) at Sep. 29, 2023	159,500	159,500
Treasury stock, shares outstanding, ending balance (in shares) at Sep. 29, 2023						0
Ending balance at Sep. 29, 2023	$ 6,082,700	$ 39,900	$ 172,400	$ 5,876,000	$ (5,600)	$ 0

Description Of Business And Bas

Description Of Business And Basis Of Presentation	12 Months Ended
	Sep. 29, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION	1. DESCRIPTION OF BUSINESS Skyworks Solutions, Inc., together with its consolidated subsidiaries (“Skyworks” or the “Company”), is empowering the wireless networking revolution. The Company’s analog and mixed-signal semiconductors are connecting people, places, and things, spanning a number of new applications within the aerospace, automotive, broadband, cellular infrastructure, connected home, defense, entertainment and gaming, industrial, medical, smartphone, tablet, and wearable markets.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Sep. 29, 2023
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	2. BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Principles of Consolidation All Skyworks subsidiaries are included in the Company’s consolidated financial statements and all intercompany balances are eliminated in consolidation. Certain items in the fiscal years 2022 and 2021 financial statements, including certain account groupings in the tax reconciliation disclosure, have been reclassified to conform to the fiscal 2023 presentation. Fiscal Year The Company’s fiscal year ends on the Friday closest to September 30. Fiscal years 2023 , 2022, and 2021 each consisted of 52 weeks and ended on September 29, 2023, September 30, 2022, and October 1, 2021, respectively. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts of assets, liabilities, revenue, expenses, comprehensive income, and accumulated other comprehensive loss that are reported during the reporting period. The Company evaluates its estimates on an ongoing basis using historical experience and other factors, including the current economic environment. Judgment is required in determining the reserves for, and fair value of, items such as overall fair value assessments of assets and liabilities, particularly those classified as Level 2 or Level 3 in the fair value hierarchy, marketable securities, inventory, intangible assets associated with business combinations, share-based compensation, revenue reserves, loss contingencies, and income taxes. In addition, judgment is required in determining whether a potential indicator of impairment of long-lived assets, indefinite-lived intangible assets, and goodwill exists and in estimating future cash flows for any necessary impairment testing. Actual results could differ significantly from these estimates. Cash and Cash Equivalents The Company invests excess cash in money market funds, U.S. Treasury securities, agency securities, other government securities, and corporate debt securities. The Company considers highly liquid investments as cash equivalents including money market funds and investments with maturities of 90 days or less when purchased. Investments The Company classifies its investment in marketable debt securities as “available-for-sale.” Available-for-sale securities are carried at fair value with unrealized holding gains or losses recorded in other comprehensive income, net of tax. Gains or losses are included in earnings in the period in which they are realized. The cost of securities sold is determined based on the specific identification method. The cost of available-for-sale debt securities is adjusted for premiums and discounts, with the amortization or accretion of such amounts included as a portion of interest. Available-for-sale debt securities with an original maturity date greater than three months and less than one year are classified as current investments. Available-for-sale debt securities with an original maturity date exceeding one year are classified as long-term. Fair Value Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principle or most advantageous market in an orderly transaction between market participants at the measurement date. Applicable accounting guidance provides a hierarchy for inputs used in measuring fair value that prioritize the use of observable inputs over the use of unobservable inputs, when such observable inputs are available. The three levels of inputs that may be used to measure fair value are as follows: • Level 1 - Quoted prices in active markets for identical assets or liabilities. • Level 2 - Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets with insufficient volume or infrequent transactions (less active markets), or model-driven valuations in which all significant inputs are observable or can be derived principally from, or corroborated with, observable market data. • Level 3 - Fair value is derived from valuation techniques in which one or more significant inputs are unobservable, including assumptions and judgments made by the Company. It is the Company’s policy to maximize the use of observable inputs and minimize the use of unobservable inputs when developing fair value measurements. When available, the Company uses quoted market prices to measure fair value. If market prices are not available, the Company is required to make judgments about assumptions market participants would use to estimate the fair value of a financial instrument. The Company measures certain assets and liabilities at fair value on a recurring basis in three levels, based on the market in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. It recognizes transfers within the fair value hierarchy at the end of the fiscal quarter in which the change in circumstances that caused the transfer occurred. The carrying value of cash and cash equivalents, accounts receivable, other current assets, accounts payable, and accrued liabilities approximates fair value due to the short-term maturities of these assets and liabilities. Inventory Inventory is stated at the lower of cost or net realizable value on a first-in, first-out basis. Reserves for excess and obsolete inventory are established on a quarterly basis and are based on a detailed analysis of aged material, salability of our inventory, market conditions, and product life cycles. Once reserves are established, write-downs of inventory are considered permanent adjustments to the cost basis of inventory. Property, Plant, and Equipment Property, plant, and equipment are carried at cost less accumulated depreciation, with significant renewals and betterments being capitalized and retired equipment written off in the respective periods. Maintenance and repairs are expensed as incurred. Depreciation is calculated using the straight-line method over the estimated useful lives, which range from five to forty years for buildings and improvements and five to ten years for machinery and equipment. Leasehold improvements are depreciated over the lesser of the economic life or the life of the associated lease. Leases The Company determines if an arrangement is a lease at its inception. Right-of-use (“ROU”) assets and liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. The Company uses its estimated incremental borrowing rate in determining the present value of lease payments considering the term of the lease, which is derived from information available at the lease commencement date. The lease term includes renewal options when it is reasonably certain that the option will be exercised and excludes termination options. To the extent that the Company’s agreements have variable lease payments, the Company includes variable lease payments that depend on an index or a rate and excludes those that depend on facts or circumstances occurring after the commencement date, other than the passage of time. Lease expense for these leases is recognized on a straight-line basis over the lease term. The Company has elected not to recognize ROU assets and lease liabilities that arise from short-term (12 months or less) leases for any class of underlying asset. Operating leases are included in operating lease ROU assets, other current liabilities, and long-term operating lease liabilities in the Company’s condensed consolidated balance sheet. Valuation of Long-Lived Assets Definite lived intangible assets are carried at cost less accumulated amortization. Amortization is calculated based on the pattern of benefit to be recognized from the underlying asset over its estimated useful life. Carrying values for long-lived assets and definite lived intangible assets are reviewed for possible impairment as circumstances warrant. Factors considered important that could result in an impairment review include significant underperformance relative to expected, historical or projected future operating results, significant changes in the manner of use of assets or the Company’s business strategy, or significant negative industry or economic trends. In addition, impairment reviews are conducted at the judgment of management whenever asset values are deemed to be unrecoverable relative to future undiscounted cash flows expected to be generated by that particular asset group. The determination of recoverability is based on an estimate of undiscounted cash flows expected to result from the use of an asset group and its eventual disposition. Such estimates require management to exercise judgment and make assumptions regarding factors such as future revenue streams, operating expenditures, cost allocation and asset utilization levels, all of which collectively impact future operating performance. The Company’s estimates of undiscounted cash flows may differ from actual cash flows due to, among other things, technological changes, economic conditions, changes to its business model, or changes in its operating performance. If the sum of the undiscounted cash flows is less than the carrying value of an asset group, the Company would recognize an impairment loss, measured as the amount by which the carrying value exceeds the fair value of the asset group. Goodwill and Indefinite-Lived Intangible Assets Goodwill and indefinite-lived intangible assets are not amortized but are tested at least annually as of the first day of the fourth fiscal quarter for impairment or more frequently if indicators of impairment exist during the fiscal year. The Company assesses its conclusion regarding segments and reporting units in conjunction with its annual goodwill impairment test and has determined that it has one reporting unit for the purposes of allocating and testing goodwill. The Company’s impairment analysis compares its fair value to its net book value to determine if there is an indicator of impairment. In the Company’s calculation of fair value, it considers the closing price of its common stock on the selected testing date, the number of shares of its common stock outstanding and other marketplace activity such as a related control premium. If the calculated fair value is determined to be less than the book value of the reporting unit, an impairment loss is recognized equal to that excess; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. Business Combinations The Company uses the acquisition method of accounting for business combinations and recognizes assets acquired and liabilities assumed at their fair values on the date acquired. Goodwill represents the excess of the purchase price over the fair value of the acquired identifiable net assets. The fair values of the assets and liabilities acquired are determined based upon the Company’s valuation using a combination of market, income, or cost approaches. The valuation involves making significant estimates and assumptions, which are based on detailed financial models including the projection of future cash flows, the weighted average cost of capital, and any cost savings that are expected to be derived in the future from the viewpoint of a market participant. Revenue Recognition The Company derives its revenue primarily from the sale of semiconductor products under individual customer purchase orders, some of which have underlying master sales agreements that specify terms governing the product sales. In the absence of a sales agreement, the Company’s standard terms and conditions apply. Revenue is recognized when control of the promised goods or services is transferred to the Company’s customers, in an amount that reflects the consideration to which the Company expects to be entitled in exchange for those goods or services. The Company applies a five-step approach as defined in FASB ASC 606, Revenue from Contracts with Customers (Topic 606), in determining the amount and timing of revenue to be recognized: (1) identifying the contract with a customer; (2) identifying the performance obligations in the contract; (3) determining the transaction price; (4) allocating the transaction price to the performance obligations in the contract; and (5) recognizing revenue when the corresponding performance obligation is satisfied. Each distinct promise to transfer products is considered to be an identified performance obligation for which revenue is recognized at a point in time upon transfer of control of the products to the customer. Transfer of control occurs upon shipment to the distributor or direct customer or when products are pulled from consignment inventory by the customer. Point in time recognition is determined as products manufactured under non-cancellable orders create an asset with an alternative use to the Company. Returns under the Company’s general assurance warranty of products have not been material, and warranty-related services are not considered a separate performance obligation. Pricing adjustments and estimates of returns are treated as variable consideration for purposes of determining the transaction price. Sales returns are generally accepted at the Company’s discretion or from distributors with stock rotation rights. Stock rotation allows distributors limited levels of returns and is based on the distributor’s prior purchases. Price protection represents price discounts granted to certain distributors and is based on negotiations on sales to end customers. Variable consideration is estimated using the expected value method considering all reasonably available information, including the Company’s historical experience and its current expectations, and is reflected in the transaction price when sales are recorded. The Company records net revenue excluding taxes on its sales to trade customers. The Company recognizes shipping fees, if any, received from customers in revenue and includes the related shipping and handling costs in cost of revenue. Accounts receivable represents the Company’s unconditional right to receive consideration from its customer. Substantially all payments are collected within the Company’s standard terms, which do not include a significant financing component. To date, there have been no material impairment losses on accounts receivable. There were no material contract assets or contract liabilities recorded on the consolidated balance sheet in any of the periods presented. All incremental customer contract acquisition costs are expensed as they are incurred as the amortization period of the asset that the Company otherwise would have recognized is one year or less in duration. Share-Based Compensation The Company recognizes compensation expense for all share-based payment awards made to employees and directors including non-qualified employee stock options, share awards and units, employee stock purchase plan, and other special share-based awards based on estimated fair values. The determination of fair value of restricted and certain performance stock awards and units is based on the value of the Company’s stock on the date of grant with performance awards and units adjusted for the actual outcome of the underlying performance condition. For more complex performance awards including units with market-based performance conditions the Company employs a Monte Carlo simulation valuation method to calculate the fair value of the awards based on the most likely outcome. Under the Monte Carlo simulation, a number of variables and assumptions are used including, but not limited to: the expected stock price volatility over the term of the award, a correlation coefficient, the risk-free rate, and dividend yield. The fair value of share-based payment awards is amortized over the requisite service period, which is defined as the period during which an employee is required to provide service in exchange for an award. The Company generally uses a straight-line attribution method for all grants that include only a service condition. Awards with both performance and service conditions are expensed over the service period for each separately vesting tranche. Share-based compensation expense recognized during the period includes actual expense on vested awards and expense associated with unvested awards. Forfeitures are recorded as incurred. Research and Development Costs Research and development costs are expensed as incurred. Loss Contingencies The Company records its best estimates of a loss contingency when it is considered probable and the amount can be reasonably estimated. When a range of loss can be reasonably estimated with no best estimate in the range, the minimum estimated liability related to the claim is recorded. As additional information becomes available, the Company assesses the potential liability related to the potential pending loss contingency and revises its estimates. Material loss contingencies are disclosed if there is at least a reasonable possibility that a loss or an additional loss may have been incurred and include estimated legal costs. Restructuring A liability for post-employment benefits is recorded when payment is probable and the amount is reasonably estimable. Contract exit costs include contract termination fees and are recognized in the period in which the Company terminates the contract. Foreign Currencies The Company’s functional currency is the United States dollar. Gains and losses related to foreign currency transactions and conversion of foreign denominated cash balances are included in current results. Income Taxes The Company uses the asset and liability method of accounting for income taxes. Under the asset and liability method, deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis. This method also requires the recognition of future tax benefits such as net operating loss carry forwards, to the extent that realization of such benefits is more likely than not. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. The carrying value of the Company’s net deferred tax assets assumes the Company will be able to generate sufficient future taxable income in certain tax jurisdictions, based on estimates and assumptions. If these estimates and related assumptions change in the future, the Company may be required to record additional valuation allowances against its deferred tax assets resulting in additional income tax expense in its Consolidated Statement of Operations. Management evaluates the realizability of the deferred tax assets and assesses the adequacy of the valuation allowance quarterly. Likewise, in the event the Company were to determine that it would be able to realize its deferred tax assets in the future in excess of their net recorded amount, an adjustment to the deferred tax assets would increase income in the period such determination was made. The determination of recording or releasing tax valuation allowances is made, in part, pursuant to an assessment performed by management regarding the likelihood that the Company will generate future taxable income in the jurisdiction that generated the deferred tax assets. This assessment requires management to exercise judgment and make estimates with respect to its ability to generate revenues, gross profits, operating income, and taxable income in future periods. Amongst other factors, management must make assumptions regarding overall business and semiconductor industry conditions, operating efficiencies, the Company’s ability to develop products to its customers’ specifications, technological change, the competitive environment, and changes in regulatory requirements which may impact its ability to generate taxable income and, in turn, realize the value of its deferred tax assets. The calculation of the Company’s tax liabilities includes addressing uncertainties in the application of complex tax regulations and is based on the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. The Company recognizes liabilities for anticipated tax audit issues in the United States and other tax jurisdictions based on its recognition threshold and measurement attribute of whether it is more likely than not that the positions the Company has taken in tax filings will be sustained upon tax audit, and the extent to which, additional taxes would be due. If payment of these amounts ultimately proves to be unnecessary, the reversal of the liabilities would result in tax benefits being recognized in the period in which it is determined the liabilities are no longer necessary. If the estimate of tax liabilities proves to be less than the ultimate assessment, a further charge to expense would result. The Company recognizes any interest or penalties, if incurred, on any unrecognized tax liabilities or benefits as a component of income tax expense. Earnings Per Share Basic earnings per share are computed using the weighted average number of common shares outstanding during the period. Diluted earnings per share incorporate the potentially dilutive incremental shares issuable upon the assumed exercise of stock options, the assumed vesting of outstanding restricted stock units, and the assumed issuance of common stock under the stock purchase plan using the treasury share method. Shares issuable upon the vesting of performance stock awards are likewise included in the calculation of diluted earnings per share as of the date the condition(s) have been satisfied, assuming the end of the reporting period was the end of the contingency period. Stock Repurchase The Company accounts for stock repurchases in the consolidated balance sheet by reducing common stock for the par value of the shares, reducing paid-in capital for the amount in excess of par to zero during the period in which the shares are repurchased, and recording the residual amount, if any, to retained earnings. Excise tax on stock repurchases is recorded as part of the cost basis of shares acquired in the consolidated statement of stockholders’ equity. Government Assistance The Company receives government assistance for qualifying capital investments, research and development, and other activities as defined by the relevant government entities awarding the incentive. Incentives provided by government entities are recognized when the Company has reasonable assurance that it will comply with the conditions of the incentive and the incentive will be received. The Company records capital-related incentives as a reduction to property, plant and equipment and recognizes a reduction to depreciation expense over the useful life of the corresponding asset. Incentives for specific operating activities are offset against the related expense in the period the expense is incurred. As of September 29, 2023, the Company has recognized $10.2 million of receivables in other short-term assets with a corresponding reduction to the carrying amounts of the qualifying manufacturing assets, recorded as a reduction to cost of goods sold as the related assets depreciate. The Company recognized an immaterial benefit in the consolidated statement of operations in fiscal 2023 for grants related to operating activities. Recently Adopted Accounting Pronouncements and Other Developments
Recently Adopted Accounting Pronouncements

Fair Value

Fair Value	12 Months Ended
	Sep. 29, 2023
Fair Value Disclosures [Abstract]
FAIR VALUE	. FAIR VALUE Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis The Company measures certain assets and liabilities at fair value on a recurring basis such as its financial instruments. There have been no transfers between Level 1, 2, or 3 assets or liabilities during fiscal 2023 . Assets and liabilities recorded at fair value on a recurring basis consisted of the following (in millions): As of September 29, 2023 As of September 30, 2022 Fair Value Measurements Fair Value Measurements Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Assets Cash and cash equivalents (1) $ 718.8 $ 718.5 $ 0.3 $ — $ 566.0 $ 565.7 $ 0.3 $ — U.S. Treasury and government securities 19.2 — 19.2 — 13.6 3.6 10.0 — Corporate bonds and notes — — — — 0.2 — 0.2 — Municipal bonds 0.5 — 0.5 — 7.0 — 7.0 — Total assets at fair value $ 738.5 $ 718.5 $ 20.0 $ — $ 586.8 $ 569.3 $ 17.5 $ — (1) Cash equivalents included in Levels 1 and 2 consist of money market funds and corporate bonds and notes, US Treasury and government securities, and agency securities purchased with less than ninety days until maturity. Assets Measured and Recorded at Fair Value on a Nonrecurring Basis The Company’s non-financial assets and liabilities, such as goodwill, intangible assets, and other long-lived assets resulting from business combinations, are measured at fair value using income approach valuation methodologies at the date of acquisition and are subsequently re-measured if there are indicators of impairment. During fiscal 2023, the Company recorded impairment charges of $64.5 million primarily due to reduced overall market demand related to long-term supply capacity deposits of $47.5 million recorded within cost of goods sold and a loss on divested assets of $12.3 million recorded within restructuring, impairment, and other. During the fiscal years ended September 30, 2022, and October 1, 2021, the Company recorded impairment charges of $20.7 million and $7.1 million, respectively.

Inventory

Inventory	12 Months Ended
	Sep. 29, 2023
Inventory, Net [Abstract]
INVENTORY	. INVENTORY Inventory consists of the following (in millions): As of September 29, September 30, Raw materials $ 57.2 $ 81.3 Work-in-process 746.8 805.3 Finished goods 315.7 325.5 Total inventory $ 1,119.7 $ 1,212.1

Property, Plant And Equipment

Property, Plant And Equipment	12 Months Ended
	Sep. 29, 2023
Property, Plant and Equipment [Abstract]
PROPERTY, PLANT AND EQUIPMENT	. PROPERTY, PLANT, AND EQUIPMENT, NET Property, plant, and equipment, net consists of the following (in millions): As of September 29, September 30, Land and improvements $ 11.8 $ 11.9 Buildings and improvements 588.2 555.6 Furniture and fixtures 74.8 70.1 Machinery and equipment 3,389.3 3,316.3 Construction in progress 107.6 157.2 Total property, plant, and equipment, gross 4,171.7 4,111.1 Accumulated depreciation (2,781.6) (2,506.3) Total property, plant, and equipment, net $ 1,390.1 $ 1,604.8

Marketable Securities (Notes)

Marketable Securities (Notes)	12 Months Ended
	Sep. 29, 2023
Investments, Debt and Equity Securities [Abstract]
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure	. MARKETABLE SECURITIES The Company’s portfolio of available-for-sale marketable securities consists of the following (in millions): Current Noncurrent September 29, September 30, September 29, September 30, U.S. Treasury and government $ 15.1 $ 13.1 $ 4.1 $ 0.5 Corporate bonds and notes — 0.2 — — Municipal bonds 0.5 7.0 — — Total marketable securities $ 15.6 $ 20.3 $ 4.1 $ 0.5

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
	Sep. 29, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND INTANGIBLE ASSETS	. GOODWILL AND INTANGIBLE ASSETS The Company’s goodwill balance was $2,176.7 million as of each of September 29, 2023, and September 30, 2022. The Company performed an impairment test of its goodwill and its indefinite-lived intangible assets as of the first day of the fourth fiscal quarter in accordance with its regularly scheduled testing. The results of these tests indicated that the Company’s goodwill and indefinite-lived intangible assets were not impaired. There were no indicators of impairment noted during the fiscal year ended September 29, 2023. Intangible assets consist of the following (in millions): As of As of Weighted average amortization period (years) September 29, 2023 September 30, 2022 Gross carrying amount Accumulated amortization Net carrying amount Gross carrying amount Accumulated amortization Net carrying amount Customer relationships and backlog 2.3 $ 154.6 $ (154.6) $ — $ 154.6 $ (122.3) $ 32.3 Developed technology and other 6.1 1,290.4 (379.4) 911.0 1,280.9 (209.2) 1,071.7 Technology licenses 2.8 75.8 (36.0) 39.8 105.1 (45.2) 59.9 In-process research and development 271.3 — 271.3 280.8 — 280.8 Total intangible assets $ 1,792.1 $ (570.0) $ 1,222.1 $ 1,821.4 $ (376.7) $ 1,444.7 Fully amortized intangible assets are eliminated from both the gross and accumulated amortization amounts in the first quarter of each fiscal year. During fiscal 2023 and fiscal 2022, $9.5 million and $293.5 million, respectively, of IPR&D assets were transferred to definite-lived intangible assets, and are being amortized over their useful lives of 12 years. Amortization expense related to definite-lived intangible assets was $225.9 million, $288.4 million, and $86.8 million for the fiscal years ended September 29, 2023, September 30, 2022, and October 1, 2021, respectively. Annual amortization expense for the next five fiscal years related to definite-lived intangible assets, excluding IPR&D, is expected to be as follows (in millions): 2024 2025 2026 2027 2028 Thereafter Amortization expense $ 179.1 $ 155.7 $ 127.8 $ 112.6 $ 89.9 $ 285.7

Income Taxes

Income Taxes	12 Months Ended
	Sep. 29, 2023
Income Tax Disclosure [Abstract]
INCOME TAXES	. INCOME TAXES Income before income taxes consists of the following components (in millions): Fiscal Years Ended September 29, September 30, October 1, United States $ 484.9 $ 663.0 $ 804.7 Foreign 593.9 813.6 794.0 Income before income taxes $ 1,078.8 $ 1,476.6 $ 1,598.7 The provision for income taxes consists of the following components (in millions): Fiscal Years Ended September 29, September 30, October 1, Current tax expense: Federal $ 164.4 $ 88.7 $ 87.5 State 0.1 0.1 — Foreign 74.4 51.5 70.7 238.9 140.3 158.2 Deferred tax expense (benefit): Federal (102.4) 43.9 (45.8) State (0.1) 0.1 (0.1) Foreign (40.4) 17.1 (11.9) (142.9) 61.1 (57.8) Provision for income taxes $ 96.0 $ 201.4 $ 100.4 The actual income tax expense is different than that which would have been computed by applying the federal statutory tax rate to income before income taxes. A reconciliation of income tax expense as computed at the United States federal statutory income tax rate to the provision for income tax expense is as follows (in millions): Fiscal Years Ended September 29, September 30, October 1, Tax expense at United States statutory rate $ 226.5 $ 310.1 $ 335.7 Foreign tax rate difference (90.7) (105.3) (111.7) Effect of stock compensation 16.0 (13.1) (6.7) Research and development credits (29.7) (26.1) (27.0) Change in tax reserve 8.1 7.4 (51.5) Global Intangible Low-Taxed Income 16.3 36.1 25.5 Foreign Derived Intangible Income (65.9) (39.9) (79.7) Other, net 15.4 32.2 15.8 Provision for income taxes $ 96.0 $ 201.4 $ 100.4 The Company operates in foreign jurisdictions with income tax rates lower than the United States tax rate of 21.0% for the fiscal years ended September 29, 2023, September 30, 2022, and October 1, 2021. The Company had accrued $34.9 million and $105.8 million of the deemed repatriation tax in short-term and long-term liabilities within the consolidated balance sheet, respectively, as of September 29, 2023. The Company had accrued $18.6 million and $139.7 million of the deemed repatriation tax in short-term and long-term liabilities within the consolidated balance sheet, respectively, as of September 30, 2022. The remaining repatriation tax is payable over the next three years: $34.9 million in 2024, $47.6 million in 2025, and $58.2 million in 2026. On October 2, 2010, the Company expanded its presence in Asia by launching operations in Singapore. The Company operates under a tax holiday in Singapore, which is effective through September 30, 2030. The current tax holiday is conditioned upon the Company’s compliance with certain employment and investment thresholds in Singapore. The impact of the tax holiday decreased Singapore taxes owed by $66.0 million, $96.6 million, and $99.5 million for the fiscal years ended September 29, 2023, September 30, 2022, and October 1, 2021, respectively, which resulted in tax benefits of $0.41, $0.59, and $0.60 of diluted earnings per share, respectively. These tax benefits were partially offset by an increase in tax expense on GILTI. Deferred income tax assets and liabilities consist of the tax effects of temporary differences related to the following (in millions): Fiscal Years Ended September 29, September 30, Deferred tax assets: Inventory $ 24.1 $ 21.4 Accrued compensation and benefits 14.4 11.6 Product returns, allowances, and warranty 7.0 1.5 Share-based and other deferred compensation 24.5 27.8 Net operating loss carry forwards 12.2 14.0 Non-United States tax credits 15.7 17.0 State tax credits 140.0 138.0 Operating leases 45.6 56.8 R&D capitalization 95.3 — Intangible assets 34.0 20.4 Property, plant, and equipment 34.5 31.4 Other, net 13.9 8.7 Deferred tax assets 461.2 348.6 Less valuation allowance (164.2) (161.4) Net deferred tax assets 297.0 187.2 Deferred tax liabilities: Property, plant, and equipment (52.8) (59.2) Intangible assets (9.6) (4.7) Operating leases (44.3) (51.5) Other, net (7.1) (39.7) Net deferred tax liabilities (113.8) (155.1) Total net deferred tax assets $ 183.2 $ 32.1 The deferred tax assets and liabilities based on tax jurisdictions are presented on our Consolidated Balance Sheets as follows: As of September 29, September 30, Deferred tax assets $ 192.3 $ 52.7 Deferred tax liabilities (9.1) (20.6) Net deferred tax asset $ 183.2 $ 32.1 In accordance with GAAP, management has determined that it is more likely than not that a portion of the Company’s historic and current year income tax benefits will not be realized. As of September 29, 2023, the Company has a valuation allowance of $164.2 million. This valuation allowance is comprised of $140.0 million related to United States tax credits, $4.0 million related to United States state net operating loss carry forwards, and $20.2 million related to foreign deferred tax assets. The United States tax credits relate primarily to California research tax credits that can be carried forward indefinitely, for which the Company has provided a full valuation allowance. The Company does not anticipate sufficient taxable income or tax liability to utilize the United States and foreign credits. If these benefits are recognized in a future period, the valuation allowance on deferred tax assets will be reversed and up to a $164.2 million income tax benefit may be recognized. The Company will need to generate $656.6 million of future United States federal taxable income to utilize its United States deferred tax assets, net of deferred tax liabilities and excluding state deferred tax assets with a full valuation allowance, as of September 29, 2023. The Company believes that future reversals of taxable temporary differences, and its forecast of continued earnings in its domestic and foreign jurisdictions, support its decision to not record a valuation allowance on other deferred tax assets. The Company will continue to assess its valuation allowance in future periods. The net valuation allowance increased by $2.8 million and $11.4 million in fiscal 2023 and fiscal 2022, respectively, primarily related to increases in state tax credit carryovers. A reconciliation of the beginning and ending amount of gross unrecognized tax benefits is as follows (in millions): Unrecognized tax benefits Balance at September 30, 2022 $ 62.5 Increases based on positions related to prior years 25.4 Decreases based on positions related to prior years (21.7) Increases based on positions related to current year 3.7 Decreases based on settlements with taxing authorities (12.0) Balance at September 29, 2023 $ 57.9 Of the total unrecognized tax benefits at September 29, 2023, $40.4 million would impact the effective tax rate, if recognized. The remaining unrecognized tax benefits would not impact the effective tax rate, if recognized, due to the Company’s valuation allowance and certain positions that were required to be capitalized. The Company anticipates reversals within the next 12 months related to items such as the lapse of the statute of limitations, audit closures, and other items that occur in the normal course of business. Although the Company cannot predict the timing of resolution with taxing authorities, if any, the Company believes it is reasonably possible that its unrecognized tax benefits will be reduced by $13.1 million in the next 12 months due to expiration of the applicable statute of limitations. During fiscal 2023 and fiscal 2022, the Company recognized $2.9 million and $1.2 million, respectively, of interest or penalties related to unrecognized tax benefits. During fiscal 2021, the Company recognized an $11.6 million benefit for interest and penalties related to unrecognized tax benefits. Accrued interest and penalties of $6.2 million and $5.7 million related to uncertain tax positions have been included in long-term tax liabilities within the consolidated balance sheet as of September 29, 2023, and September 30, 2022, respectively. During fiscal 2023, the Company concluded an Internal Revenue Service examination of its federal income tax returns for the fiscal year ended September 28, 2018 (“fiscal 2018”) and the fiscal year ended September 27, 2019 (“fiscal 2019”). The Company agreed to various adjustments to fiscal 2018 and fiscal 2019 tax returns that resulted in the recognition of net tax expense of $1.6 million during fiscal 2023. The Company’s major tax jurisdictions as of September 29, 2023, are the United States, California, Canada, Mexico, Japan, and Singapore. For the United States, the Company has open tax years dating back to fiscal 2020. For California, the Company has open tax years dating back to fiscal 2004. For Canada, the Company has open tax years dating back to fiscal 2016. For Mexico, the Company has open tax years dating back to fiscal 2013. For Japan, the Company has open tax years dating back to fiscal 2016. For Singapore, the Company has open tax years dating back to fiscal 2019. The Company is subject to audit examinations by the respective taxing authorities on a periodic basis, of which the results could impact its financial position, results of operations, or cash flows.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Sep. 29, 2023
Stockholders' Equity Note [Abstract]
STOCKHOLDERS’ EQUITY	. STOCKHOLDERS’ EQUITY Common Stock At September 29, 2023, the Company is authorized to issue 525.0 million shares of common stock, par value $0.25 per share, of which 159.5 million shares are issued and outstanding. Holders of the Company’s common stock are entitled to dividends in the event declared by the Company’s Board of Directors out of funds legally available for such purpose. Dividends may not be paid on common stock unless all accrued dividends on preferred stock, if any, have been paid or declared and set aside. In the event of the Company’s liquidation, dissolution, or winding up, the holders of common stock will be entitled to share pro rata in the assets remaining after payment to creditors and after payment of the liquidation preference plus any unpaid dividends to holders of any outstanding preferred stock. Each holder of the Company’s common stock is entitled to one vote for each such share outstanding in the holder’s name. No holder of common stock is entitled to cumulate votes in voting for directors. The Company’s restated certificate of incorporation as amended to date (the “Certificate of Incorporation”) provides that, unless otherwise determined by the Company’s Board of Directors, no holder of stock has any preemptive right to purchase or subscribe for any stock of any class which the Company may issue or sell. Preferred Stock The Company’s Certificate of Incorporation has authorized and permits the Company to issue up to 25.0 million shares of preferred stock without par value in one or more series and with rights and preferences that may be fixed or designated by the Company’s Board of Directors without any further action by the Company’s stockholders. The designation, powers, preferences, rights and qualifications, limitations, and restrictions of the preferred stock of each series will be fixed by the certificate of designation relating to such series, which will specify the terms of the preferred stock. At September 29, 2023, the Company had no shares of preferred stock issued or outstanding. Stock Repurchase and Retirement On January 31, 2023, the Board of Directors approved a stock repurchase program (“January 31, 2023 stock repurchase program”), pursuant to which the Company is authorized to repurchase up to $2.0 billion of its common stock from time to time through February 1, 2025, on the open market or in privately negotiated transactions, in compliance with applicable securities laws and other legal requirements. The January 31, 2023 stock repurchase program succeeds in its entirety the stock repurchase program approved by the Board of Directors on January 26, 2021 (“January 26, 2021 stock repurchase program”). The timing and amount of any shares of the Company’s common stock that are repurchased under the January 31, 2023 stock repurchase program will be determined by the Company’s management based on its evaluation of market conditions and other factors. The January 31, 2023 stock repurchase program may be suspended or discontinued at any time. The Company currently expects to fund the January 31, 2023 stock repurchase program using the Company’s working capital. During the fiscal year ended September 29, 2023, the Company paid approximately $175.3 million (including commissions) in connection with the repurchase of 1.9 million shares of its common stock (paying an average price of $90.60 per share) all of which shares were repurchased pursuant to the January 26, 2021 stock repurchase program. As of September 29, 2023, $2.0 billion remained available under the January 31, 2023 stock repurchase program. During the fiscal year ended September 30, 2022, the Company paid approximately $886.8 million (including commissions) in connection with the repurchase of 6.5 million shares of its common stock (paying an average price of $136.32 per share) all of which shares were repurchased pursuant to the January 26, 2021, stock repurchase program. During the fiscal year ended October 1, 2021, the Company paid approximately $195.6 million (including commissions) in connection with the repurchase of 1.4 million shares of its common stock (paying an average price of $138.85 per share) all of which shares were repurchased pursuant to the January 30, 2019 stock repurchase program. During the fiscal years ended September 30, 2022 and October 1, 2021, the Board of Directors approved the retirement of 6.2 million and 68.5 million treasury shares at an aggregate historical cost of $893.4 million and $4,342.6 million, respectively. Upon retirement, the shares assumed the status of authorized and unissued. All future repurchases of shares will assume the status of authorized and unissued. Dividends On November 2, 2023, the Company announced that the Board of Directors had declared a cash dividend on the Company’s common stock of $0.68 per share. This dividend is payable on December 12, 2023, to the Company’s stockholders of record as of the close of business on November 21, 2023. Future dividends are subject to declaration by the Board of Directors. The dividends charged to retained earnings in fiscal 2023 and 2022 were as follows (in millions except per share data): Fiscal Years Ended September 29, September 30, Per Share Total Per Share Total First quarter $ 0.62 $ 99.4 $ 0.56 $ 92.5 Second quarter 0.62 98.6 0.56 91.2 Third quarter 0.62 98.7 0.56 90.0 Fourth quarter 0.68 108.5 0.62 99.4 $ 2.54 $ 405.2 $ 2.30 $ 373.1 Employee Stock Benefit Plans As of September 29, 2023, the Company has the following equity compensation plans under which its equity securities were authorized for issuance to its employees and/or directors: ◦ the 2002 Employee Stock Purchase Plan ◦ the Non-Qualified Employee Stock Purchase Plan ◦ the 2008 Director Long-Term Incentive Plan ◦ the 2015 Long-Term Incentive Plan Except for the Non-Qualified Employee Stock Purchase Plan, each of the foregoing equity compensation plans was approved by the Company’s stockholders. As of September 29, 2023, a total of 37.5 million shares are authorized for grant under the Company’s share-based compensation plans. The number of common shares reserved for future awards to employees and directors under these plans was 10.5 million at September 29, 2023. The Company currently grants new equity awards to employees under the 2015 Long-Term Incentive Plan and to non-employee directors under the 2008 Director Long-Term Incentive Plan. 2015 Long-Term Incentive Plan. Under this plan, officers, employees, and certain consultants may be granted stock options, restricted stock units, performance stock units, and other share-based awards. The plan has been approved by the stockholders. Under the plan, up to 24.5 million shares have been authorized for grant. A total of 8.9 million shares were available for new grants as of September 29, 2023. The maximum contractual term of options under the plan is seven four three one 2008 Director Long-Term Incentive Plan. Under this plan, non-employee directors may be granted stock options, restricted stock units, and other share-based awards. The plan has been approved by the stockholders. Under the plan a total of 1.5 million shares have been authorized for grant. A total of 0.5 million shares were available for new grants as of September 29, 2023. The maximum contractual term of options granted under the plan is ten four one Employee Stock Purchase Plans. The Company maintains a domestic and an international employee stock purchase plan. Under these plans, eligible employees may purchase common stock through payroll deductions of up to 15% of their compensation. The price per share is the lower of 85% of the fair market value of the common stock at the beginning or end of each offering period (six months). The plans provide for purchases by employees of up to an aggregate of 11.6 million shares. Shares of common stock purchased under these plans in the fiscal years ended September 29, 2023, September 30, 2022, and October 1, 2021, were 0.3 million, 0.3 million, and 0.2 million, respectively. At September 29, 2023, there were 1.0 million shares available for purchase. The Company recognized compensation expense of $10.9 million, $9.2 million, and $8.7 million for the fiscal years ended September 29, 2023, September 30, 2022, and October 1, 2021, respectively, related to the employee stock purchase plan. The unrecognized compensation expense on the employee stock purchase plan at September 29, 2023, was $3.5 million. The weighted average period over which the cost is expected to be recognized is approximately four Restricted and Performance Awards and Units The following table represents a summary of the Company’s restricted and performance awards and units: Shares (in millions) Weighted average grant date fair value Non-vested awards outstanding at September 30, 2022 2.4 $ 139.63 Granted (1) 2.6 $ 92.86 Vested (1.2) $ 123.60 Canceled/forfeited (0.4) $ 112.15 Non-vested awards outstanding at September 29, 2023 3.4 $ 112.69 (1) includes performance stock awards granted and earned assuming target performance under the underlying performance metrics The weighted-average grant date fair value per share for awards granted during the fiscal years ended September 29, 2023, September 30, 2022, and October 1, 2021, was $92.86, $151.20, and $148.96, respectively. The following table summarizes the total intrinsic value for awards vested (in millions): Fiscal Years Ended September 29, September 30, October 1, Awards $ 111.9 $ 249.6 $ 167.4 Valuation and Expense Information The following table summarizes pre-tax share-based compensation expense by financial statement line and related tax benefit (in millions): Fiscal Years Ended September 29, September 30, October 1, Cost of goods sold $ 20.7 $ 26.9 $ 28.9 Research and development 94.8 93.8 85.7 Selling, general, and administrative 69.6 74.5 77.3 Total share-based compensation expense $ 185.1 $ 195.2 $ 191.9 Share-based compensation tax expense (benefit) $ 9.1 $ (20.1) $ (13.5) Capitalized share-based compensation expense at period end $ 14.5 $ 6.8 $ 9.8 The following table summarizes total compensation costs related to unvested share-based awards not yet recognized and the weighted-average period over which it is expected to be recognized at September 29, 2023: Unrecognized compensation cost for unvested awards Weighted average remaining recognition period Awards $ 242.3 2.6 The fair value of the restricted stock units is equal to the closing market price of the Company’s common stock on the date of grant. The Company issued performance stock unit awards during fiscal 2023, fiscal 2022, and fiscal 2021 that contained market-based conditions. The fair value of these performance stock unit awards was estimated on the date of the grant using a Monte Carlo simulation with the following weighted average assumptions: Fiscal Year Ended September 29, September 30, October 1, Volatility of common stock 45.71 % 44.04 % 43.20 % Average volatility of peer companies 40.74 % 46.28 % 45.96 % Average correlation coefficient of peer companies 0.65 0.65 0.65 Risk-free interest rate 4.51 % 0.79 % 0.25 % Dividend yield 2.80 % 1.40 % 1.39 %

Leases, Codification Topic 842

Leases, Codification Topic 842	12 Months Ended
	Sep. 29, 2023
Leases [Abstract]
Lessee, Operating Leases	10. LEASES The Company’s lease arrangements consist primarily of corporate, manufacturing, design, and other facility agreements as well as various machinery and office equipment agreements. The leases expire at various dates through 2061, some of which include options to extend the lease term. The longest potential total lease term consists of a 40-year land lease in Osaka, Japan. During the fiscal years ended September 29, 2023, September 30, 2022, and October 1, 2021, the Company recorded $39.8 million, $43.6 million, and $33.9 million of operating lease expense, and $19.2 million, $12.3 million, and $3.2 million of variable lease expense, respectively. Supplemental cash information and non-cash activities related to operating leases are as follows (in millions): Fiscal Year Ended September 29, September 30, October 1, Operating cash outflows from operating leases $ 34.0 $ 32.0 $ 32.5 Operating lease assets obtained in exchange for new lease liabilities $ 11.1 $ 84.6 $ 24.8 Operating leases are classified as follows (in millions): As of September 29, September 30, Other current liabilities $ 28.3 $ 18.5 Long-term operating lease liabilities 188.7 206.9 Total lease liabilities $ 217.0 $ 225.4 Maturities of lease liabilities under operating leases by fiscal year are as follows (in millions): As of September 29, 2024 $ 20.6 2025 32.7 2026 29.3 2027 28.5 2028 26.3 Thereafter 123.9 Total lease payments 261.3 Less: imputed interest (44.3) Present value of lease liabilities 217.0 Less: current portion (included in other current liabilities) (28.3) Total $ 188.7 Weighted-average remaining lease term and discount rate related to operating leases are as follows: As of September 29, September 30, Weighted-average remaining lease term (years) 12.3 12.1 Weighted-average discount rate 3.6 % 3.3 %

Commitments

Commitments	12 Months Ended
	Sep. 29, 2023
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS	11. COMMITMENTS AND CONTINGENCIES Legal Matters From time to time, various lawsuits, claims, and proceedings have been, and may in the future be, instituted or asserted against the Company, including those pertaining to patent infringement, intellectual property, environmental hazards, product liability and warranty, safety and health, employment, and contractual matters. The semiconductor industry is characterized by vigorous protection and pursuit of intellectual property rights. Third parties have asserted, and may in the future, assert patent, copyright, trademark, and other intellectual property rights to technologies that are important to the Company’s business and have demanded and may in the future demand that the Company license their technology. The outcome of any such litigation cannot be predicted with certainty and some such lawsuits, claims, or proceedings may be disposed of unfavorably to the Company. Generally speaking, intellectual property disputes often have a risk of injunctive relief, which, if imposed against the Company, could materially and adversely affect the Company’s financial condition or results of operations. From time to time the Company may also be involved in legal proceedings in the ordinary course of business. The Company monitors the status of legal proceedings and other contingencies on an ongoing basis to ensure loss contingencies are recognized and/or disclosed in its financial statements and footnotes. The Company does not believe there are any pending legal proceedings that are reasonably possible to result in a material loss. The Company is engaged in various legal actions in the normal course of business and, while there can be no assurances, the Company believes the outcome of all pending litigation involving the Company will not have, individually or in the aggregate, a material adverse effect on its business or financial statements. Purchase Commitments The Company purchases materials primarily pursuant to individual purchase orders, some of which have underlying master purchase agreements. Some of these purchase commitments are cancellable, and some are non-cancelable, depending on the terms with each individual supplier. In the event of cancellation, the Company may be required to pay costs incurred through the date of cancellation or other fees. When cancellation would result in incurring costs or other fees, the Company has historically sought to negotiate amended terms to the original agreements and orders to limit its exposure and, as such, the Company believes that purchase commitments as of any particular date may not be a reliable indicator of future commitments. The Company maintains certain minimum purchase commitments under long-term capacity reservation agreements primarily with foundries for the purchase of wafers. Under these agreements, the Company agreed to pay refundable deposits to the suppliers in exchange for reserved manufacturing production capacity over the term of the agreements.

Guarantees and Indemnities

Guarantees and Indemnities	12 Months Ended
	Sep. 29, 2023
Guarantees [Abstract]
GUARANTEES AND INDEMNITIES	12. GUARANTEES AND INDEMNITIES The Company has made no significant contractual guarantees for the benefit of third parties. However, the Company generally indemnifies its customers from third-party intellectual property infringement litigation claims related to its products and, on occasion, also provides other indemnities related to product sales. In connection with certain facility leases, the Company has indemnified its lessors for certain claims arising from the facility or the lease. The Company indemnifies its directors and officers to the maximum extent permitted under the laws of the state of Delaware. The duration of the indemnities varies, and in many cases is indefinite. The indemnities to customers in connection with product sales generally are subject to limits based upon the amount of the related product sales and in many cases are subject to geographic and other restrictions. In certain instances, the Company’s indemnities do not provide for any limitation of the

Earnings Per Share

Earnings Per Share	12 Months Ended
	Sep. 29, 2023
Earnings Per Share [Abstract]
EARNINGS PER SHARE	13. EARNINGS PER SHARE The following table sets forth the computation of basic and diluted earnings per share (in millions, except per share amounts): Fiscal Years Ended September 29, September 30, October 1, Net income $ 982.8 $ 1,275.2 $ 1,498.3 Weighted average shares outstanding – basic 159.4 162.4 165.2 Dilutive effect of equity-based awards 0.9 0.9 1.8 Weighted average shares outstanding – diluted 160.3 163.3 167.0 Net income per share – basic $ 6.17 $ 7.85 $ 9.07 Net income per share – diluted $ 6.13 $ 7.81 $ 8.97 Anti-dilutive common stock equivalents 0.1 0.7 — Basic earnings per share are calculated by dividing net income by the weighted average number of shares of the Company’s common stock outstanding during the period. The calculation of diluted earnings per share includes the dilutive effect of equity-based awards that were outstanding during the fiscal years ended September 29, 2023, September 30, 2022, and October 1, 2021, using the treasury stock method. Shares issuable upon the vesting of performance stock awards are likewise included in the calculation of diluted earnings per share as of the date the condition(s) have been satisfied, assuming the end of the reporting period was the end of the contingency period. Certain of the Company’s outstanding share-based awards, noted in the table above, were excluded because they were anti-dilutive, but they could become dilutive in the future.

Segment Information

Segment Information	12 Months Ended
	Sep. 29, 2023
Segment Reporting [Abstract]
SEGMENT INFORMATION AND CONCENTRATIONS	14. SEGMENT INFORMATION AND CONCENTRATIONS The Company has a single reportable operating segment which designs, develops, manufactures, and markets similar proprietary semiconductor products, including intellectual property. In reaching this conclusion, management considers the definition of the chief operating decision maker (“ CODM ”), how the business is defined by the CODM, the nature of the information provided to the CODM, and how that information is used to make operating decisions, allocate resources, and assess performance. The Company’s CODM is the president and chief executive officer. The results of operations provided to and analyzed by the CODM are at the consolidated level and accordingly, key resource decisions and assessment of performance are performed at the consolidated level. The Company assesses its determination of operating segments at least annually. Disaggregation of Revenue and Geographic Information The Company presents net revenue by geographic area based upon the location of the OEMs’ headquarters and sales channel as it believes that doing so best depicts how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. Individually insignificant OEMs are presented based on sales region. Net revenue by geographic area is as follows (in millions): Fiscal Years Ended September 29, September 30, October 1, United States $ 3,603.9 $ 3,685.7 $ 3,228.1 China 358.3 599.6 994.2 Taiwan 344.4 430.4 404.2 Europe, Middle East, and Africa 204.2 235.8 180.1 South Korea 198.3 458.2 264.5 Other Asia-Pacific 63.3 75.8 38.0 Total $ 4,772.4 $ 5,485.5 $ 5,109.1 Net revenue by sales channel is as follows (in millions): Fiscal Years Ended September 29, September 30, October 1, Distributors $ 4,235.7 $ 4,488.1 $ 4,539.7 Direct customers 536.7 997.4 569.4 Total $ 4,772.4 $ 5,485.5 $ 5,109.1 The Company’s revenue from external customers is generated principally from the sale of semiconductor products. Accordingly, the Company considers its product offerings to be similar in nature and therefore not segregated for reporting purposes. Net property, plant, and equipment balances, based on the physical locations within the indicated geographic areas are as follows (in millions): As of September 29, September 30, Japan $ 606.4 $ 679.7 Singapore 307.5 363.3 Mexico 233.1 296.7 United States 219.7 246.0 Rest of world 23.4 19.1 $ 1,390.1 $ 1,604.8 Concentrations Financial instruments that potentially subject the Company to concentration of credit risk consist principally of trade accounts receivable. Trade accounts receivable are primarily derived from sales to manufacturers of communications and consumer products and electronic component distributors. The Company performs ongoing credit evaluations of customers. In fiscal 2023, 2022, and 2021, Apple, through sales to multiple distributors, contract manufacturers, and direct sales for multiple applications including smartphones, tablets, desktop, and notebook computers, watches and other devices, in the aggregate accounted for 66%, 58%, and 59% of the Company’s net revenue, respectively. At September 29, 2023, the Company’s three largest accounts receivable balances comprised 83% of aggregate gross accounts receivable. This concentration was 79% at September 30, 2022, and 70% at October 1, 2021.

Other Liabilities

Other Liabilities	12 Months Ended
	Sep. 29, 2023
Condensed Financial Information Disclosure [Abstract]
Additional Financial Information Disclosure	15. SUPPLEMENTAL FINANCIAL INFORMATION Other current assets consist of the following (in millions): As of September 30, October 1, Prepaid expenses $ 306.0 $ 242.3 Other 155.1 95.2 Total other current assets $ 461.1 $ 337.5 Other current liabilities consist of the following (in millions): As of September 29, September 30, Accrued customer liabilities $ 270.9 $ 226.9 Accrued taxes 58.8 48.8 Short-term operating lease liabilities 28.3 18.5 Other 44.8 45.0 Total other current liabilities $ 402.8 $ 339.2

Subsequent Events

Subsequent Events	12 Months Ended
	Sep. 29, 2023
Subsequent Events [Abstract]
Subsequent Events	17. SUBSEQUENT EVENT On October 4, 2023, the Company repaid $150.0 million of outstanding borrowings under the Term Loans. As of October 4, 2023, there were $150.0 million of borrowings outstanding under the Term Credit Agreement.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021
Pay vs Performance Disclosure
Net Income	$ 982.8	$ 1,275.2	$ 1,498.3

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Sep. 29, 2023 shares
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	ITEM 9B. OTHER INFORMATION. Director and Officer Trading Arrangements: A significant portion of the compensation of the Company’s directors and officers (as defined in Rule 16a-1(f) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) is in the form of equity awards and, from time to time, directors and officers engage in open-market transactions with respect to the securities acquired pursuant to such equity awards or other Company securities, including to satisfy tax withholding obligations when equity awards vest or are exercised, and for diversification or other personal reasons. Transactions in Company securities by directors and officers are required to be made in accordance with the Company’s insider trading policy, which requires that the transactions be in accordance with applicable U.S. federal securities laws that prohibit trading while in possession of material nonpublic information. Rule 10b5-1 under the Exchange Act provides an affirmative defense that enables directors and officers to prearrange transactions in the Company’s securities in a manner that avoids concerns about initiating transactions while in possession of material nonpublic information. The following table describes contracts, instructions or written plans for the sale or purchase of Company securities adopted by our directors and officers during the fourth quarter of fiscal 2023 that are intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) (a “Rule 10b5-1 trading arrangement”): Name and Title Date of Adoption Duration of Rule 10b5-1 Trading Arrangement Aggregate Number of Securities to Be Purchased or Sold Karilee Durham, Senior Vice President, Human Resources August 9, 2023 Until August 9, 2024, or such earlier date upon which all transactions are completed or expire without execution Sale of up to 5,000 shares None of our directors or officers terminated a Rule 10b5-1 trading arrangement or adopted or terminated a non-Rule 10b5-1 trading arrangement (as defined in Item 408(c) of Regulation S-K) during the fourth quarter of fiscal 2023.
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false
Karilee Durham [Member]
Trading Arrangements, by Individual
Name	Karilee Durham
Title	Senior Vice President, Human Resources
Adoption Date	August 9, 2023
Termination Date	August 9, 2024
Aggregate Available	5,000

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Sep. 29, 2023
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation All Skyworks subsidiaries are included in the Company’s consolidated financial statements and all intercompany balances are eliminated in consolidation. Certain items in the fiscal years 2022 and 2021 financial statements, including certain account groupings in the tax reconciliation disclosure, have been reclassified to conform to the fiscal 2023 presentation.
Fiscal Year	Fiscal Year The Company’s fiscal year ends on the Friday closest to September 30. Fiscal years 2023 , 2022, and 2021 each consisted of 52 weeks and ended on September 29, 2023, September 30, 2022, and October 1, 2021, respectively.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts of assets, liabilities, revenue, expenses, comprehensive income, and accumulated other comprehensive loss that are reported during the reporting period. The Company evaluates its estimates on an ongoing basis using historical experience and other factors, including the current economic environment. Judgment is required in determining the reserves for, and fair value of, items such as overall fair value assessments of assets and liabilities, particularly those classified as Level 2 or Level 3 in the fair value hierarchy, marketable securities, inventory, intangible assets associated with business combinations, share-based compensation, revenue reserves, loss contingencies, and income taxes. In addition, judgment is required in determining whether a potential indicator of impairment of long-lived assets, indefinite-lived intangible assets, and goodwill exists and in estimating future cash flows for any necessary impairment testing. Actual results could differ significantly from these estimates.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company invests excess cash in money market funds, U.S. Treasury securities, agency securities, other government securities, and corporate debt securities. The Company considers highly liquid investments as cash equivalents including money market funds and investments with maturities of 90 days or less when purchased.
Investments	Investments The Company classifies its investment in marketable debt securities as “available-for-sale.” Available-for-sale securities are carried at fair value with unrealized holding gains or losses recorded in other comprehensive income, net of tax. Gains or losses are included in earnings in the period in which they are realized. The cost of securities sold is determined based on the specific identification method. The cost of available-for-sale debt securities is adjusted for premiums and discounts, with the amortization or accretion of such amounts included as a portion of interest. Available-for-sale debt securities with an original maturity date greater than three months and less than one year are classified as current investments. Available-for-sale debt securities with an original maturity date exceeding one year are classified as long-term.
Fair Value	Fair Value Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principle or most advantageous market in an orderly transaction between market participants at the measurement date. Applicable accounting guidance provides a hierarchy for inputs used in measuring fair value that prioritize the use of observable inputs over the use of unobservable inputs, when such observable inputs are available. The three levels of inputs that may be used to measure fair value are as follows: • Level 1 - Quoted prices in active markets for identical assets or liabilities. • Level 2 - Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets with insufficient volume or infrequent transactions (less active markets), or model-driven valuations in which all significant inputs are observable or can be derived principally from, or corroborated with, observable market data. • Level 3 - Fair value is derived from valuation techniques in which one or more significant inputs are unobservable, including assumptions and judgments made by the Company. It is the Company’s policy to maximize the use of observable inputs and minimize the use of unobservable inputs when developing fair value measurements. When available, the Company uses quoted market prices to measure fair value. If market prices are not available, the Company is required to make judgments about assumptions market participants would use to estimate the fair value of a financial instrument. The Company measures certain assets and liabilities at fair value on a recurring basis in three levels, based on the market in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. It recognizes transfers within the fair value hierarchy at the end of the fiscal quarter in which the change in circumstances that caused the transfer occurred.
Inventory	Inventory Inventory is stated at the lower of cost or net realizable value on a first-in, first-out basis. Reserves for excess and obsolete inventory are established on a quarterly basis and are based on a detailed analysis of aged material, salability of our inventory, market conditions, and product life cycles. Once reserves are established, write-downs of inventory are considered permanent adjustments to the cost basis of inventory.
Property, Plant and Equipment	Property, Plant, and Equipment Property, plant, and equipment are carried at cost less accumulated depreciation, with significant renewals and betterments being capitalized and retired equipment written off in the respective periods. Maintenance and repairs are expensed as incurred. Depreciation is calculated using the straight-line method over the estimated useful lives, which range from five to forty years for buildings and improvements and five to ten years for machinery and equipment. Leasehold improvements are depreciated over the lesser of the economic life or the life of the associated lease.
Valuation of Long-Lived Assets	Valuation of Long-Lived Assets Definite lived intangible assets are carried at cost less accumulated amortization. Amortization is calculated based on the pattern of benefit to be recognized from the underlying asset over its estimated useful life. Carrying values for long-lived assets and definite lived intangible assets are reviewed for possible impairment as circumstances warrant. Factors considered important that could result in an impairment review include significant underperformance relative to expected, historical or projected future operating results, significant changes in the manner of use of assets or the Company’s business strategy, or significant negative industry or economic trends. In addition, impairment reviews are conducted at the judgment of
Goodwill and Indefinite Intangible Assets	Goodwill and Indefinite-Lived Intangible Assets Goodwill and indefinite-lived intangible assets are not amortized but are tested at least annually as of the first day of the fourth fiscal quarter for impairment or more frequently if indicators of impairment exist during the fiscal year. The Company assesses its conclusion regarding segments and reporting units in conjunction with its annual goodwill impairment test and has determined that it has one reporting unit for the purposes of allocating and testing goodwill.
Business Combinations	Business Combinations The Company uses the acquisition method of accounting for business combinations and recognizes assets acquired and liabilities assumed at their fair values on the date acquired. Goodwill represents the excess of the purchase price over the fair value of the acquired identifiable net assets. The fair values of the assets and liabilities acquired are determined based upon the Company’s valuation using a combination of market, income, or cost approaches. The valuation involves making significant estimates and assumptions, which are based on detailed financial models including the projection of future cash flows, the weighted average cost of capital, and any cost savings that are expected to be derived in the future from the viewpoint of a market participant.
Revenue Recognition	Revenue Recognition The Company derives its revenue primarily from the sale of semiconductor products under individual customer purchase orders, some of which have underlying master sales agreements that specify terms governing the product sales. In the absence of a sales agreement, the Company’s standard terms and conditions apply. Revenue is recognized when control of the promised goods or services is transferred to the Company’s customers, in an amount that reflects the consideration to which the Company expects to be entitled in exchange for those goods or services. The Company applies a five-step approach as defined in FASB ASC 606, Revenue from Contracts with Customers (Topic 606), in determining the amount and timing of revenue to be recognized: (1) identifying the contract with a customer; (2) identifying the performance obligations in the contract; (3) determining the transaction price; (4) allocating the transaction price to the performance obligations in the contract; and (5) recognizing revenue when the corresponding performance obligation is satisfied. Each distinct promise to transfer products is considered to be an identified performance obligation for which revenue is recognized at a point in time upon transfer of control of the products to the customer. Transfer of control occurs upon shipment to the distributor or direct customer or when products are pulled from consignment inventory by the customer. Point in time recognition is determined as products manufactured under non-cancellable orders create an asset with an alternative use to the Company. Returns under the Company’s general assurance warranty of products have not been material, and warranty-related services are not considered a separate performance obligation. Pricing adjustments and estimates of returns are treated as variable consideration for purposes of determining the transaction price. Sales returns are generally accepted at the Company’s discretion or from distributors with stock rotation rights. Stock rotation allows distributors limited levels of returns and is based on the distributor’s prior purchases. Price protection represents price discounts granted to certain distributors and is based on negotiations on sales to end customers. Variable consideration is estimated using the expected value method considering all reasonably available information, including the Company’s historical experience and its current expectations, and is reflected in the transaction price when sales are recorded. The Company records net revenue excluding taxes on its sales to trade customers. The Company recognizes shipping fees, if any, received from customers in revenue and includes the related shipping and handling costs in cost of revenue. Accounts receivable represents the Company’s unconditional right to receive consideration from its customer. Substantially all payments are collected within the Company’s standard terms, which do not include a significant financing component. To date, there have been no material impairment losses on accounts receivable. There were no material contract assets or contract liabilities recorded on the consolidated balance sheet in any of the periods presented. All incremental customer contract acquisition costs are expensed as they are incurred as the amortization period of the asset that the Company otherwise would have recognized is one year or less in duration.
Share-based Compensation	Share-Based Compensation The Company recognizes compensation expense for all share-based payment awards made to employees and directors including non-qualified employee stock options, share awards and units, employee stock purchase plan, and other special share-based awards based on estimated fair values. The determination of fair value of restricted and certain performance stock awards and units is based on the value of the Company’s stock on the date of grant with performance awards and units adjusted for the actual outcome of the underlying performance condition. For more complex performance awards including units with market-based performance conditions the Company employs a Monte Carlo simulation valuation method to calculate the fair value of the awards based on the most likely outcome. Under the Monte Carlo simulation, a number of variables and assumptions are used including, but not limited to: the expected stock price volatility over the term of the award, a correlation coefficient, the risk-free rate, and dividend yield. The fair value of share-based payment awards is amortized over the requisite service period, which is defined as the period during which an employee is required to provide service in exchange for an award. The Company generally uses a straight-line attribution method for all grants that include only a service condition. Awards with both performance and service conditions are expensed over the service period for each separately vesting tranche. Share-based compensation expense recognized during the period includes actual expense on vested awards and expense associated with unvested awards. Forfeitures are recorded as incurred.
Research and Development Costs	Research and Development Costs Research and development costs are expensed as incurred.
Loss Contingencies	Loss Contingencies The Company records its best estimates of a loss contingency when it is considered probable and the amount can be reasonably estimated. When a range of loss can be reasonably estimated with no best estimate in the range, the minimum estimated liability related to the claim is recorded. As additional information becomes available, the Company assesses the potential liability related to the potential pending loss contingency and revises its estimates. Material loss contingencies are disclosed if there is at least a reasonable possibility that a loss or an additional loss may have been incurred and include estimated legal costs.
Restructuring	Restructuring
Foreign Currencies	Foreign Currencies The Company’s functional currency is the United States dollar. Gains and losses related to foreign currency transactions and conversion of foreign denominated cash balances are included in current results.
Income Tax	Income Taxes The Company uses the asset and liability method of accounting for income taxes. Under the asset and liability method, deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis. This method also requires the recognition of future tax benefits such as net operating loss carry forwards, to the extent that realization of such benefits is more likely than not. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. The carrying value of the Company’s net deferred tax assets assumes the Company will be able to generate sufficient future taxable income in certain tax jurisdictions, based on estimates and assumptions. If these estimates and related assumptions change in the future, the Company may be required to record additional valuation allowances against its deferred tax assets resulting in additional income tax expense in its Consolidated Statement of Operations. Management evaluates the realizability of the deferred tax assets and assesses the adequacy of the valuation allowance quarterly. Likewise, in the event the Company were to determine that it would be able to realize its deferred tax assets in the future in excess of their net recorded amount, an adjustment to the deferred tax assets would increase income in the period such determination was made. The determination of recording or releasing tax valuation allowances is made, in part, pursuant to an assessment performed by management regarding the likelihood that the Company will generate future taxable income in the jurisdiction that generated the deferred tax assets. This assessment requires management to exercise judgment and make estimates with respect to its ability to generate revenues, gross profits, operating income, and taxable income in future periods. Amongst other factors, management must make assumptions regarding overall business and semiconductor industry conditions, operating efficiencies, the Company’s ability to develop products to its customers’ specifications, technological change, the competitive environment, and changes in regulatory requirements which may impact its ability to generate taxable income and, in turn, realize the value of its deferred tax assets. The calculation of the Company’s tax liabilities includes addressing uncertainties in the application of complex tax regulations and is based on the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. The Company recognizes liabilities for anticipated tax audit issues in the United States and other tax jurisdictions based on its recognition threshold and measurement attribute of whether it is more likely than not that the positions the Company has taken in tax filings will be sustained upon tax audit, and the extent to which, additional taxes would be due. If payment of these amounts ultimately proves to be unnecessary, the reversal of the liabilities would result in tax benefits being recognized in the period in which it is determined the liabilities are no longer necessary. If the estimate of tax liabilities proves to be less than the ultimate assessment, a further charge to expense would result. The Company recognizes any interest or penalties, if incurred, on any unrecognized tax liabilities or benefits as a component of income tax expense.
Earnings Per Share, Policy [Policy Text Block]	Earnings Per Share Basic earnings per share are computed using the weighted average number of common shares outstanding during the period. Diluted earnings per share incorporate the potentially dilutive incremental shares issuable upon the assumed exercise of stock options, the assumed vesting of outstanding restricted stock units, and the assumed issuance of common stock under the stock purchase plan using the treasury share method. Shares issuable upon the vesting of performance stock awards are likewise included in the calculation of diluted earnings per share as of the date the condition(s) have been satisfied, assuming the end of the reporting period was the end of the contingency period.
Recently Adopted Accounting Pronouncements
Lessee, Leases	Leases The Company determines if an arrangement is a lease at its inception. Right-of-use (“ROU”) assets and liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. The Company uses its estimated incremental borrowing rate in determining the present value of lease payments considering the term of the lease, which is derived from information available at the lease commencement date. The lease term includes renewal options when it is reasonably certain that the option will be exercised and excludes termination options. To the extent that the Company’s agreements have variable lease payments, the Company includes variable lease payments that depend on an index or a rate and excludes those that depend on facts or circumstances occurring after the commencement date, other than the passage of time. Lease expense for these leases is recognized on a straight-line basis over the lease term. The Company has elected not to recognize ROU assets and lease liabilities that arise from short-term (12 months or less) leases for any class of underlying asset. Operating leases are included in operating lease ROU assets, other current liabilities, and long-term operating lease liabilities in the Company’s condensed consolidated balance sheet.
Recently Issued Accounting Pronouncements	Recently Adopted Accounting Pronouncements and Other Developments In November 2021, the Financial Accounting Standards Board issued ASU 2021-10 - Government Assistance (Topic 832): Disclosures by Business Entities about Government Assistance (“ASU 2021-10”) to increase transparency of government assistance received by most business entities. The standard requires annual disclosures of the nature of the transactions, including the commitments, contingencies, and the terms and conditions attached to the grant, the form in which the assistance was provided, the accounting policies used to account for the transactions and the effect of the transactions on the entity's financial statements. The Company adopted ASU 2021-10 in fiscal 2023 and the adoption did not have a significant impact on the consolidated financial statements. In August 2022, the U.S. government enacted the CHIPS and Science Act, which provides funding for manufacturing grants and research investments and establishes a 25% investment tax credit for certain investments in U.S. semiconductor manufacturing that is placed in service after December 31, 2022. This new law did not have a material impact to the Company in fiscal 2023.
Stockholders' Equity, Policy	Stock Repurchase The Company accounts for stock repurchases in the consolidated balance sheet by reducing common stock for the par value of the shares, reducing paid-in capital for the amount in excess of par to zero during the period in which the shares are repurchased, and recording the residual amount, if any, to retained earnings. Excise tax on stock repurchases is recorded as part of the cost basis of shares acquired in the consolidated statement of stockholders’ equity.
Government Assistance	Government Assistance The Company receives government assistance for qualifying capital investments, research and development, and other activities as defined by the relevant government entities awarding the incentive. Incentives provided by government entities are recognized when the Company has reasonable assurance that it will comply with the conditions of the incentive and the incentive will be received. The Company records capital-related incentives as a reduction to property, plant and equipment and recognizes a reduction to depreciation expense over the useful life of the corresponding asset. Incentives for specific operating activities are offset against the related expense in the period the expense is incurred. As of September 29, 2023, the Company has recognized $10.2 million of receivables in other short-term assets with a corresponding reduction to the carrying amounts of the qualifying manufacturing assets, recorded as a reduction to cost of goods sold as the related assets depreciate. The Company recognized an immaterial benefit in the consolidated statement of operations in fiscal 2023 for grants related to operating activities.

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
	Sep. 29, 2023
Fair Value Disclosures [Abstract]
Fair Value, Assets Measured on Recurring Basis	As of September 29, 2023 As of September 30, 2022 Fair Value Measurements Fair Value Measurements Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Assets Cash and cash equivalents (1) $ 718.8 $ 718.5 $ 0.3 $ — $ 566.0 $ 565.7 $ 0.3 $ — U.S. Treasury and government securities 19.2 — 19.2 — 13.6 3.6 10.0 — Corporate bonds and notes — — — — 0.2 — 0.2 — Municipal bonds 0.5 — 0.5 — 7.0 — 7.0 — Total assets at fair value $ 738.5 $ 718.5 $ 20.0 $ — $ 586.8 $ 569.3 $ 17.5 $ —
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments	The carrying amount and estimated fair value of debt under Senior Notes consists of the following (in millions): As of September 29, September 30, Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value 0.90% Senior Notes due 2023 $ — $ — $ 499.2 $ 488.5 1.80% Senior Notes due 2026 497.7 444.5 496.8 431.2 3.00% Senior Notes due 2031 495.2 390.4 494.5 377.6 Total debt under Senior Notes $ 992.9 $ 834.9 $ 1,490.5 $ 1,297.3

Inventory (Tables)

Inventory (Tables)	12 Months Ended
	Sep. 29, 2023
Inventory, Net [Abstract]
Schedule Of Inventories	Inventory consists of the following (in millions): As of September 29, September 30, Raw materials $ 57.2 $ 81.3 Work-in-process 746.8 805.3 Finished goods 315.7 325.5 Total inventory $ 1,119.7 $ 1,212.1

Property, Plant And Equipment (

Property, Plant And Equipment (Tables)	12 Months Ended
	Sep. 29, 2023
Property, Plant and Equipment [Abstract]
Schedule Of Property, Plant And Equipment	Property, plant, and equipment, net consists of the following (in millions): As of September 29, September 30, Land and improvements $ 11.8 $ 11.9 Buildings and improvements 588.2 555.6 Furniture and fixtures 74.8 70.1 Machinery and equipment 3,389.3 3,316.3 Construction in progress 107.6 157.2 Total property, plant, and equipment, gross 4,171.7 4,111.1 Accumulated depreciation (2,781.6) (2,506.3) Total property, plant, and equipment, net $ 1,390.1 $ 1,604.8

Marketable Securities (Tables)

Marketable Securities (Tables)	12 Months Ended
	Sep. 29, 2023
Investments, Debt and Equity Securities [Abstract]
Debt Securities, Available-for-sale	The Company’s portfolio of available-for-sale marketable securities consists of the following (in millions): Current Noncurrent September 29, September 30, September 29, September 30, U.S. Treasury and government $ 15.1 $ 13.1 $ 4.1 $ 0.5 Corporate bonds and notes — 0.2 — — Municipal bonds 0.5 7.0 — — Total marketable securities $ 15.6 $ 20.3 $ 4.1 $ 0.5

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Sep. 29, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule Of Intangible Assets Excluding Goodwill	Intangible assets consist of the following (in millions): As of As of Weighted average amortization period (years) September 29, 2023 September 30, 2022 Gross carrying amount Accumulated amortization Net carrying amount Gross carrying amount Accumulated amortization Net carrying amount Customer relationships and backlog 2.3 $ 154.6 $ (154.6) $ — $ 154.6 $ (122.3) $ 32.3 Developed technology and other 6.1 1,290.4 (379.4) 911.0 1,280.9 (209.2) 1,071.7 Technology licenses 2.8 75.8 (36.0) 39.8 105.1 (45.2) 59.9 In-process research and development 271.3 — 271.3 280.8 — 280.8 Total intangible assets $ 1,792.1 $ (570.0) $ 1,222.1 $ 1,821.4 $ (376.7) $ 1,444.7
Schedule of Expected Amortization Expense	Annual amortization expense for the next five fiscal years related to definite-lived intangible assets, excluding IPR&D, is expected to be as follows (in millions): 2024 2025 2026 2027 2028 Thereafter Amortization expense $ 179.1 $ 155.7 $ 127.8 $ 112.6 $ 89.9 $ 285.7

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Sep. 29, 2023
Income Tax Disclosure [Abstract]
Schedule of Income before Income Tax, Domestic and Foreign	Income before income taxes consists of the following components (in millions): Fiscal Years Ended September 29, September 30, October 1, United States $ 484.9 $ 663.0 $ 804.7 Foreign 593.9 813.6 794.0 Income before income taxes $ 1,078.8 $ 1,476.6 $ 1,598.7
Schedule of Components of Income Tax Expense (Benefit)	The provision for income taxes consists of the following components (in millions): Fiscal Years Ended September 29, September 30, October 1, Current tax expense: Federal $ 164.4 $ 88.7 $ 87.5 State 0.1 0.1 — Foreign 74.4 51.5 70.7 238.9 140.3 158.2 Deferred tax expense (benefit): Federal (102.4) 43.9 (45.8) State (0.1) 0.1 (0.1) Foreign (40.4) 17.1 (11.9) (142.9) 61.1 (57.8) Provision for income taxes $ 96.0 $ 201.4 $ 100.4
Schedule of Effective Income Tax Rate Reconciliation	The actual income tax expense is different than that which would have been computed by applying the federal statutory tax rate to income before income taxes. A reconciliation of income tax expense as computed at the United States federal statutory income tax rate to the provision for income tax expense is as follows (in millions): Fiscal Years Ended September 29, September 30, October 1, Tax expense at United States statutory rate $ 226.5 $ 310.1 $ 335.7 Foreign tax rate difference (90.7) (105.3) (111.7) Effect of stock compensation 16.0 (13.1) (6.7) Research and development credits (29.7) (26.1) (27.0) Change in tax reserve 8.1 7.4 (51.5) Global Intangible Low-Taxed Income 16.3 36.1 25.5 Foreign Derived Intangible Income (65.9) (39.9) (79.7) Other, net 15.4 32.2 15.8 Provision for income taxes $ 96.0 $ 201.4 $ 100.4
Schedule of Deferred Tax Assets and Liabilities	Deferred income tax assets and liabilities consist of the tax effects of temporary differences related to the following (in millions): Fiscal Years Ended September 29, September 30, Deferred tax assets: Inventory $ 24.1 $ 21.4 Accrued compensation and benefits 14.4 11.6 Product returns, allowances, and warranty 7.0 1.5 Share-based and other deferred compensation 24.5 27.8 Net operating loss carry forwards 12.2 14.0 Non-United States tax credits 15.7 17.0 State tax credits 140.0 138.0 Operating leases 45.6 56.8 R&D capitalization 95.3 — Intangible assets 34.0 20.4 Property, plant, and equipment 34.5 31.4 Other, net 13.9 8.7 Deferred tax assets 461.2 348.6 Less valuation allowance (164.2) (161.4) Net deferred tax assets 297.0 187.2 Deferred tax liabilities: Property, plant, and equipment (52.8) (59.2) Intangible assets (9.6) (4.7) Operating leases (44.3) (51.5) Other, net (7.1) (39.7) Net deferred tax liabilities (113.8) (155.1) Total net deferred tax assets $ 183.2 $ 32.1 The deferred tax assets and liabilities based on tax jurisdictions are presented on our Consolidated Balance Sheets as follows: As of September 29, September 30, Deferred tax assets $ 192.3 $ 52.7 Deferred tax liabilities (9.1) (20.6) Net deferred tax asset $ 183.2 $ 32.1
Summary of Positions for which Significant Change in Unrecognized Tax Benefits is Reasonably Possible	A reconciliation of the beginning and ending amount of gross unrecognized tax benefits is as follows (in millions): Unrecognized tax benefits Balance at September 30, 2022 $ 62.5 Increases based on positions related to prior years 25.4 Decreases based on positions related to prior years (21.7) Increases based on positions related to current year 3.7 Decreases based on settlements with taxing authorities (12.0) Balance at September 29, 2023 $ 57.9

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Sep. 29, 2023
Stockholders' Equity Note [Abstract]
Dividends Declared	On November 2, 2023, the Company announced that the Board of Directors had declared a cash dividend on the Company’s common stock of $0.68 per share. This dividend is payable on December 12, 2023, to the Company’s stockholders of record as of the close of business on November 21, 2023. Future dividends are subject to declaration by the Board of Directors. The dividends charged to retained earnings in fiscal 2023 and 2022 were as follows (in millions except per share data): Fiscal Years Ended September 29, September 30, Per Share Total Per Share Total First quarter $ 0.62 $ 99.4 $ 0.56 $ 92.5 Second quarter 0.62 98.6 0.56 91.2 Third quarter 0.62 98.7 0.56 90.0 Fourth quarter 0.68 108.5 0.62 99.4 $ 2.54 $ 405.2 $ 2.30 $ 373.1
Schedule of Other Share-based Compensation, Activity	Shares (in millions) Weighted average grant date fair value Non-vested awards outstanding at September 30, 2022 2.4 $ 139.63 Granted (1) 2.6 $ 92.86 Vested (1.2) $ 123.60 Canceled/forfeited (0.4) $ 112.15 Non-vested awards outstanding at September 29, 2023 3.4 $ 112.69 (1) includes performance stock awards granted and earned assuming target performance under the underlying performance metrics
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs	The following table summarizes pre-tax share-based compensation expense by financial statement line and related tax benefit (in millions): Fiscal Years Ended September 29, September 30, October 1, Cost of goods sold $ 20.7 $ 26.9 $ 28.9 Research and development 94.8 93.8 85.7 Selling, general, and administrative 69.6 74.5 77.3 Total share-based compensation expense $ 185.1 $ 195.2 $ 191.9 Share-based compensation tax expense (benefit) $ 9.1 $ (20.1) $ (13.5) Capitalized share-based compensation expense at period end $ 14.5 $ 6.8 $ 9.8
Schedule of Unrecognized Compensation Cost, Nonvested Awards	The following table summarizes total compensation costs related to unvested share-based awards not yet recognized and the weighted-average period over which it is expected to be recognized at September 29, 2023: Unrecognized compensation cost for unvested awards Weighted average remaining recognition period Awards $ 242.3 2.6
Schedule of Share-based Payment Awards, Performance Shares, Valuation Assumptions Used	The fair value of these performance stock unit awards was estimated on the date of the grant using a Monte Carlo simulation with the following weighted average assumptions: Fiscal Year Ended September 29, September 30, October 1, Volatility of common stock 45.71 % 44.04 % 43.20 % Average volatility of peer companies 40.74 % 46.28 % 45.96 % Average correlation coefficient of peer companies 0.65 0.65 0.65 Risk-free interest rate 4.51 % 0.79 % 0.25 % Dividend yield 2.80 % 1.40 % 1.39 %

Leases, Codification Topic 842

Leases, Codification Topic 842 (Tables)	12 Months Ended
	Sep. 29, 2023
Leases [Abstract]
Lease, Cost	Supplemental cash information and non-cash activities related to operating leases are as follows (in millions): Fiscal Year Ended September 29, September 30, October 1, Operating cash outflows from operating leases $ 34.0 $ 32.0 $ 32.5 Operating lease assets obtained in exchange for new lease liabilities $ 11.1 $ 84.6 $ 24.8
Lessee, Operating Lease, Liability, Maturity	Maturities of lease liabilities under operating leases by fiscal year are as follows (in millions): As of September 29, 2024 $ 20.6 2025 32.7 2026 29.3 2027 28.5 2028 26.3 Thereafter 123.9 Total lease payments 261.3 Less: imputed interest (44.3) Present value of lease liabilities 217.0 Less: current portion (included in other current liabilities) (28.3) Total $ 188.7
Lease, Cost, weighted-average remaining lease term, weighted-average discount rate	Weighted-average remaining lease term and discount rate related to operating leases are as follows: As of September 29, September 30, Weighted-average remaining lease term (years) 12.3 12.1 Weighted-average discount rate 3.6 % 3.3 %
Liabilities, Lessee	Operating leases are classified as follows (in millions): As of September 29, September 30, Other current liabilities $ 28.3 $ 18.5 Long-term operating lease liabilities 188.7 206.9 Total lease liabilities $ 217.0 $ 225.4

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Sep. 29, 2023
Earnings Per Share [Abstract]
Schedule Of Earnings Per Share	The following table sets forth the computation of basic and diluted earnings per share (in millions, except per share amounts): Fiscal Years Ended September 29, September 30, October 1, Net income $ 982.8 $ 1,275.2 $ 1,498.3 Weighted average shares outstanding – basic 159.4 162.4 165.2 Dilutive effect of equity-based awards 0.9 0.9 1.8 Weighted average shares outstanding – diluted 160.3 163.3 167.0 Net income per share – basic $ 6.17 $ 7.85 $ 9.07 Net income per share – diluted $ 6.13 $ 7.81 $ 8.97 Anti-dilutive common stock equivalents 0.1 0.7 —

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Sep. 29, 2023
Segment Reporting [Abstract]
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area	Fiscal Years Ended September 29, September 30, October 1, United States $ 3,603.9 $ 3,685.7 $ 3,228.1 China 358.3 599.6 994.2 Taiwan 344.4 430.4 404.2 Europe, Middle East, and Africa 204.2 235.8 180.1 South Korea 198.3 458.2 264.5 Other Asia-Pacific 63.3 75.8 38.0 Total $ 4,772.4 $ 5,485.5 $ 5,109.1
Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country	Net property, plant, and equipment balances, based on the physical locations within the indicated geographic areas are as follows (in millions): As of September 29, September 30, Japan $ 606.4 $ 679.7 Singapore 307.5 363.3 Mexico 233.1 296.7 United States 219.7 246.0 Rest of world 23.4 19.1 $ 1,390.1 $ 1,604.8
Disaggregation of Revenue	Net revenue by sales channel is as follows (in millions): Fiscal Years Ended September 29, September 30, October 1, Distributors $ 4,235.7 $ 4,488.1 $ 4,539.7 Direct customers 536.7 997.4 569.4 Total $ 4,772.4 $ 5,485.5 $ 5,109.1

Debt (Tables)

Debt (Tables)	12 Months Ended
	Sep. 29, 2023
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	Debt consists of the following (in millions, except percentages): As of Effective Interest Rate September 29, September 30, 0.90% Senior Notes due 2023 — % $ — $ 500.0 1.80% Senior Notes due 2026 1.97 % 500.0 500.0 3.00% Senior Notes due 2031 3.13 % 500.0 500.0 Term Loans due 2024 6.37 % 300.0 700.0 Unamortized debt discount and issuance costs (7.7) (10.9) Total debt 1,292.3 2,189.1 Less: current portion of long-term debt 299.4 499.2 Total long-term debt $ 992.9 $ 1,689.9

Other Liabilities (Tables)

Other Liabilities (Tables)	12 Months Ended
	Sep. 29, 2023
Condensed Financial Information Disclosure [Abstract]
Other Current Liabilities	As of September 29, September 30, Accrued customer liabilities $ 270.9 $ 226.9 Accrued taxes 58.8 48.8 Short-term operating lease liabilities 28.3 18.5 Other 44.8 45.0 Total other current liabilities $ 402.8 $ 339.2
Schedule of Other Nonoperating Income (Expense)
Schedule of Other Current Assets	Other current assets consist of the following (in millions): As of September 30, October 1, Prepaid expenses $ 306.0 $ 242.3 Other 155.1 95.2 Total other current assets $ 461.1 $ 337.5

Fair Value (Narrative) (Details

Fair Value (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Asset Impairment Charges	$ 64,500	$ 20,700	$ 7,100
Supply Commitment
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Asset Impairment Charges	47,500
Disposal Group, Not Discontinued Operations
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Asset Impairment Charges	$ 12,300

Fair Value (Schedule Of Financi

Fair Value (Schedule Of Financial Instruments Measured At Fair Value On Recurring Basis) (Details) - USD ($) $ in Thousands	Sep. 29, 2023	Sep. 30, 2022
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 738,500	$ 586,800
Cash and Cash Equivalents, Fair Value Disclosure	718,800	566,000
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	718,500	569,300
Cash and Cash Equivalents, Fair Value Disclosure	718,500	565,700
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	20,000	17,500
Cash and Cash Equivalents, Fair Value Disclosure	300	300
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0
Cash and Cash Equivalents, Fair Value Disclosure	0	0
US Treasury and Government [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	19,200	13,600
US Treasury and Government [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0	3,600
US Treasury and Government [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	19,200	10,000
US Treasury and Government [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0	0
Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0	200
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0	0
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0	200
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0	0
US States and Political Subdivisions Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	500
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		7,000
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0	0
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	500	7,000
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	$ 0	$ 0

Fair Value, Assets and Liabilit

Fair Value, Assets and Liabilities Measured on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	Sep. 29, 2023	Sep. 30, 2022
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Long-term Debt	$ 992,900	$ 1,689,900
Senior Notes	992,900	1,490,500
2023 Notes
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Long-term Debt		499,200
2026 Notes
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Long-term Debt	497,700	496,800
2031 Notes
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Long-term Debt	495,200	494,500
Fair Value, Inputs, Level 2 [Member]
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Long-term Debt, Fair Value		1,297,300
Debt Instrument, Fair Value Disclosure	834,900
Fair Value, Inputs, Level 2 [Member] | 2023 Notes
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Short-Term Debt, Fair Value	0
Long-term Debt, Fair Value		488,500
Fair Value, Inputs, Level 2 [Member] | 2026 Notes
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Long-term Debt, Fair Value	444,500	431,200
Fair Value, Inputs, Level 2 [Member] | 2031 Notes
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Long-term Debt, Fair Value	390,400	$ 377,600
2023 Notes
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Senior Notes, Current	$ 0

Inventory (Schedule Of Inventor

Inventory (Schedule Of Inventories) (Details) - USD ($) $ in Millions	Sep. 29, 2023	Sep. 30, 2022
Inventory, Net [Abstract]
Raw materials	$ 57.2	$ 81.3
Work-in-process	746.8	805.3
Finished goods	315.7	325.5
Total inventories	$ 1,119.7	$ 1,212.1

Property, Plant And Equipment_2

Property, Plant And Equipment (Schedule Of Property, Plant And Equipment) (Details) - USD ($) $ in Millions	Sep. 29, 2023	Sep. 30, 2022
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	$ 4,171.7	$ 4,111.1
Accumulated depreciation and amortization	(2,781.6)	(2,506.3)
Total property, plant and equipment, net	1,390.1	1,604.8
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	11.8	11.9
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	588.2	555.6
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	74.8	70.1
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	3,389.3	3,316.3
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	$ 107.6	$ 157.2

Marketable Securities (Details)

Marketable Securities (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Noncurrent, Maximum Contractual Maturity	2 years
Debt Securities, Available-for-sale, Current	$ 15.6	$ 20.3
Debt Securities, Available-for-sale, Noncurrent	4.1	0.5
US Treasury and Government [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Current	15.1	13.1
Debt Securities, Available-for-sale, Noncurrent	4.1	0.5
Corporate Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Current	0	0.2
Debt Securities, Available-for-sale, Noncurrent	0	0
US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Current	0.5	7
Debt Securities, Available-for-sale, Noncurrent	$ 0	$ 0

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets (Changes in Goodwill) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021
Goodwill [Roll Forward]
Goodwill at beginning of the period	$ 2,176.7
Goodwill at end of the period	2,176.7	$ 2,176.7
Completed and transferred in-process research and development	$ 9.5	293.5
Weighted average amortization period (years)	12 years
Amortization of intangibles	$ 225.9	$ 288.4	$ 86.8

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets (Schedule of Intangible Assets Excluding Goodwill) (Details) - USD ($) $ in Millions	Sep. 29, 2023	Sep. 30, 2022
Intangible Assets Excluding Goodwill [Line Items]
Goodwill	$ 2,176.7	$ 2,176.7
Weighted average amortization period (years)	12 years
Gross carrying amount	$ 1,792.1	1,821.4
Accumulated amortization	(570)	(376.7)
Net carrying amount	$ 1,222.1	1,444.7
Customer Relationships [Member]
Intangible Assets Excluding Goodwill [Line Items]
Weighted average amortization period (years)	2 years 3 months 18 days
Gross carrying amount	$ 154.6	154.6
Accumulated amortization	(154.6)	(122.3)
Net carrying amount	$ 0	32.3
Developed Technology and Other [Member]
Intangible Assets Excluding Goodwill [Line Items]
Weighted average amortization period (years)	6 years 1 month 6 days
Gross carrying amount	$ 1,290.4	1,280.9
Accumulated amortization	(379.4)	(209.2)
Net carrying amount	$ 911	1,071.7
Licensing Agreements [Member]
Intangible Assets Excluding Goodwill [Line Items]
Weighted average amortization period (years)	2 years 9 months 18 days
Gross carrying amount	$ 75.8	105.1
Accumulated amortization	(36)	(45.2)
Net carrying amount	39.8	59.9
In Process Research and Development [Member]
Intangible Assets Excluding Goodwill [Line Items]
Gross carrying amount	271.3	280.8
Accumulated amortization	0	0
Net carrying amount	$ 271.3	$ 280.8

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets (Schedule of Future Amortization Expense) (Details) $ in Millions	Sep. 29, 2023 USD ($)
Finite-Lived Intangible Assets, Future Amortization Expense [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 179.1
Finite-Lived Intangible Assets, Amortization Expense, Year Two	155.7
Finite-Lived Intangible Assets, Amortization Expense, Year Three	127.8
Finite-Lived Intangible Assets, Amortization Expense, Year Four	112.6
Finite-Lived Intangible Assets, Amortization Expense, Year Five	89.9
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	$ 285.7

Income Taxes (Income before Inc

Income Taxes (Income before Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021
Income Tax Disclosure [Abstract]
United States	$ 484.9	$ 663	$ 804.7
Foreign	593.9	813.6	794
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ 1,078.8	$ 1,476.6	$ 1,598.7

Income Taxes (Income Tax Provis

Income Taxes (Income Tax Provision) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021
Current tax expense (benefit):
Federal	$ 164,400	$ 88,700	$ 87,500
State	100	100	0
Foreign	74,400	51,500	70,700
Current Income Tax Expense	238,900	140,300	158,200
Deferred tax expense (benefit):
Federal	(102,400)	43,900	(45,800)
Deferred State and Local Income Tax Expense (Benefit)	(100)	100	(100)
Foreign	(40,400)	17,100	(11,900)
Deferred Income Tax Expense	(142,900)	61,100	(57,800)
Provision for income taxes	96,000	201,400	$ 100,400
Income Taxes [Line Items]
Accrued income taxes, current	58,800	48,800
Valuation Allowance [Line Items]
Deferred Tax Assets, Valuation Allowance	$ 164,200	$ 161,400

Income Taxes (Income Tax Expens

Income Taxes (Income Tax Expense Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021
Income Tax Disclosure [Abstract]
Tax expense at United States statutory rate	$ 226,500	$ 310,100	$ 335,700
Foreign tax rate difference	(90,700)	(105,300)	(111,700)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Amount	16,000	(13,100)	(6,700)
Research and development credits	(29,700)	(26,100)	(27,000)
Change in tax reserve	(8,100)	7,400	51,500
EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxedIncomeAmount	16,300	36,100	25,500
EffectiveIncomeTaxRateReconciliationForeignDerivedIntangibleIncome	(65,900)	(39,900)	(79,700)
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	15,400	32,200	15,800
Provision for income taxes	$ 96,000	$ 201,400	$ 100,400

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021
Income Taxes [Line Items]
United States tax rate	21%
Foreign tax rate difference	$ 90,700	$ 105,300	$ 111,700
Income tax holiday	September 30, 2030
Impact of tax holiday	$ 66,000	$ 96,600	$ 99,500
Impact of tax holiday on diluted earnings per share (in dollars per share)	$ 0.41	$ 0.59	$ 0.60
Valuation Allowance, Amount	$ 164,200	$ 161,400
Tax benefit to recognize if valuation allowance is reversed	164,200
Future taxable income needed to utilize deferred tax assets	656,600
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	2,800	11,400
Total unrecognized tax benefits that would impact the effective tax rate	40,400
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	(11,600)	(2,900)	$ (1,200)
Decreases relating to settlements with taxing authorities	12,000
Accrued interest or penalties related to unrecognized tax benefit	6,200	5,700
EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxedIncomeAmount	16,300	36,100	25,500
EffectiveIncomeTaxRateReconciliationForeignDerivedIntangibleIncome	65,900	39,900	79,700
Provision for income taxes	96,000	201,400	$ 100,400
Tax Cuts and Jobs Act, Transition Tax for Accumulated Foreign Earnings, Liability, Current	34,900	18,600
Tax Cuts and Jobs Act, Transition Tax for Accumulated Foreign Earnings, Liability, Noncurrent	105,800	$ 139,700
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	13,100
2024 Cash Disbursement for Repatriation tax
Income Taxes [Line Items]
Accrued Income Taxes	34,900
2025 Cash Disbursement for Repatriation tax
Income Taxes [Line Items]
Accrued Income Taxes	47,600
2026 Cash Disbursement for Repatriation tax
Income Taxes [Line Items]
Accrued Income Taxes	58,200
Foreign Tax Authority [Member]
Income Taxes [Line Items]
Valuation Allowance, Amount	20,200
State and Local Jurisdiction [Member] | General Business Tax Credit Carryforward
Income Taxes [Line Items]
Valuation Allowance, Amount	140,000
State and Local Jurisdiction [Member] | Capital Loss Carryforward
Income Taxes [Line Items]
Valuation Allowance, Amount	$ 4,000
UNITED STATES
Income Taxes [Line Items]
Open tax year	2020
CALIFORNIA
Income Taxes [Line Items]
Open tax year	2004
CANADA
Income Taxes [Line Items]
Open tax year	2016
MEXICO
Income Taxes [Line Items]
Open tax year	2013
JAPAN
Income Taxes [Line Items]
Open tax year	2016
SINGAPORE
Income Taxes [Line Items]
Open tax year	2019

Income Taxes (Deferred Tax Asse

Income Taxes (Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Sep. 29, 2023	Sep. 30, 2022
Deferred tax liabilities:
Prepaid insurance	$ (7,100)	$ (39,700)
Property, plant and equipment	(52,800)	(59,200)
Intangible assets	(9,600)	(4,700)
Deferred tax assets:
Inventory	24,100	21,400
Accrued compensation and benefits	14,400	11,600
Product returns, allowances and warranty	7,000	1,500
Share-based and other deferred compensation	24,500	27,800
Net operating loss carry forwards	12,200	14,000
Federal tax credits	15,700	17,000
State tax credits	140,000	138,000
Deferred Tax Assets, Property, Plant and Equipment	34,000	20,400
Deferred Tax Assets, Goodwill and Intangible Assets	34,500	31,400
Other - net	13,900	8,700
Deferred tax assets	461,200	348,600
Less valuation allowance	(164,200)	(161,400)
Net deferred tax assets	297,000	187,200
Deferred Tax Liabilities, Net	113,800	155,100
Total deferred tax assets	183,200	32,100
Deferred Tax Liabilities, Leasing Arrangements	(44,300)	(51,500)
deferred tax asset, leasing arrangements	45,600	56,800
Deferred Tax Assets, Prepaids	95,300	0
Deferred Income Tax Assets, Net	192,300	52,700
Other Noncurrent Liabilities [Member]
Deferred tax assets:
Deferred Income Tax Liabilities, Net	(9,100)	(20,600)
Income Taxes [Line Items]
Deferred Income Tax Liabilities, Net	$ 9,100	$ 20,600

Income Taxes (Changes in Unreco

Income Taxes (Changes in Unrecognized Tax Benefit) (Details) $ in Thousands	12 Months Ended
	Sep. 29, 2023 USD ($)
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	$ 25,400
Balance at September 30, 2016	62,500
Decreases based on positions related to prior years	(21,700)
Increases based on positions related to current year	3,700
Decreases relating to settlements with taxing authorities	(12,000)
Balance at September 29, 2017	$ 57,900

Stockholders' Equity (Common an

Stockholders' Equity (Common and Preferred Shares) (Details) - $ / shares shares in Millions	Sep. 29, 2023	Sep. 30, 2022
Stockholders' Equity Note [Abstract]
Common stock, shares authorized (in shares)	525
Common stock, par value (in dollars per share)	$ 0.25
Common stock, shares issued (in shares)	159.5
Common stock, shares outstanding (in shares)	159.5	160.2
Preferred stock, shares authorized (in shares)	25

Stockholders' Equity (Share Rep

Stockholders' Equity (Share Repurchase) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021
Share Repurchase [Line Items]
Share repurchase program	$ 175,300	$ 886,800	$ 195,600
Share repurchase program (in shares)	1,900	6,500	1,400
Treasury stock, average price per share (in dollars per share)	$ 90.60	$ 136.32	$ 138.85
Authorized repurchased amount	$ 2,000,000
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	2,000,000
Treasury Stock, Shares, Retired		6,200	68,500
Treasury Stock, Retired, Cost Method, Amount		$ 893,400	$ 4,342,600
Treasury Stock, Shares, Retired		6,200	68,500
Treasury Stock, Retired, Cost Method, Amount		$ 893,400	$ 4,342,600

Stockholders' Equity (Dividends

Stockholders' Equity (Dividends) (Details) - USD ($) $ / shares in Units, $ in Millions				3 Months Ended								12 Months Ended
	Dec. 12, 2023	Nov. 21, 2023	Nov. 02, 2023	Sep. 29, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 30, 2022	Sep. 30, 2022	Jul. 01, 2022	Apr. 01, 2022	Dec. 31, 2021	Sep. 29, 2023	Sep. 30, 2022
Subsequent Event [Line Items]
Cash dividends declared and paid per share (in dollars per share)				$ 0.68	$ 0.62	$ 0.62	$ 0.62	$ 0.62	$ 0.56	$ 0.56	$ 0.56	$ 2.54	$ 2.30
Cash dividends declared and paid				$ 108.5	$ 98.7	$ 98.6	$ 99.4	$ 99.4	$ 90	$ 91.2	$ 92.5	$ 405.2	$ 373.1
Dividend Declared [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends payable, date declared			Nov. 02, 2023
Cash dividends declared and paid per share (in dollars per share)			$ 0.68
Dividends payable, date to be paid	Dec. 12, 2023
Dividends payable, date of record		Nov. 21, 2023

Stockholders' Equity (Employee

Stockholders' Equity (Employee Stock Benefit Plans) (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	37.5
Shares available for grant (in shares)	10.5
Employee Contributions To ESPP	15%
Capitalized stock based compensation	$ 14.5	$ 6.8	$ 9.8
Share-based compensation	$ 185.1	$ 195.2	$ 191.9
Director Long Term Incentive Plan 2008 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	1.5
Shares available for grant (in shares)	0.5
Stock Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	24.5
Shares available for grant (in shares)	8.9
Equity incentive plan performance shares maximum vesting period	3 years
Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	11.6
ESPP shares issued (in shares)	0.3	0.3	0.2
Shares available for grant (in shares)	1
Percent of market price	85%
Share-based compensation	$ 10.9	$ 9.2	$ 8.7
Unrecognized Compensation Cost for unvested awards	$ 3.5
Weighted average remaining recognition period (in years)	4 months
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation Cost for unvested awards	$ 242.3
Weighted average remaining recognition period (in years)	2 years 7 months 6 days
Restricted Stock [Member] | Director Long Term Incentive Plan 2008 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Restricted Stock [Member] | Long Term Incentive Plan 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Stock Options [Member] | Director Long Term Incentive Plan 2008 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual life maximum	10 years
Vesting period	4 years
Stock Options [Member] | Long Term Incentive Plan 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual life maximum	7 years
Vesting period	4 years
Performance Shares [Member] | Long Term Incentive Plan 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year

Stockholders' Equity (Stock Opt

Stockholders' Equity (Stock Options) (Details)	12 Months Ended
	Sep. 29, 2023
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Remaining Contractual Term	2 years 2 months 12 days

Stockholders' Equity (Restricte

Stockholders' Equity (Restricted and Performance based Awards) (Details) - $ / shares shares in Thousands	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Non-vested awards outstanding at September 30, 2016	2,400
Granted	2,600
Vested	(1,200)
Canceled/ forfeited	(400)
Non-vested awards outstanding at September 29, 2017	3,400	2,400
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Nonvested awards outstanding, weighted average exercise price, beginning balance	$ 139.63
Granted, weighted average exercise price	92.86	$ 151.20	$ 148.96
Vested, weighted average exercise price	123.60
Cancelled/forfeited, weighted average exercise price	112.15
weighted average exercise price, ending balance	$ 112.69	$ 139.63

Stockholders' Equity (Summary o

Stockholders' Equity (Summary of Total Intrinsic Value) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested	$ 111.9	$ 249.6	$ 167.4

Stockholders' Equity (Share Bas

Stockholders' Equity (Share Based Expense Allocation) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation	$ 185.1	$ 195.2	$ 191.9
Share-Based Payment Arrangement, Expense, after Tax	9.1
Share-based compensation tax benefit		20.1	13.5
Capitalized stock based compensation	14.5	6.8	9.8
Cost of Sales [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated share-based compensation	20.7	26.9	28.9
Research and Development Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated share-based compensation	94.8	93.8	85.7
General and Administrative Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated share-based compensation	$ 69.6	$ 74.5	$ 77.3

Stockholders' Equity (Compensat

Stockholders' Equity (Compensation Costs Related to Unvested Awards) (Details) - Restricted Stock [Member] $ in Millions	12 Months Ended
	Sep. 29, 2023 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation Cost for unvested awards	$ 242.3
Weighted average remaining recognition period (in years)	2 years 7 months 6 days

Stockholders' Equity (Schedule

Stockholders' Equity (Schedule Of Weighted Average Assumptions Used in Calculating Share-Based Performance Awards) (Details) - Performance Shares [Member]	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate	45.71%	44.04%	43.20%
Average volatility of peer companies	40.74%	46.28%	45.96%
Average correlation coefficient of peer group	0.65	0.65	0.65
Risk free interest rate	4.51%	0.79%	0.25%
Dividend yield	2.80%	1.40%	1.39%

Leases, Codification Topic 84_2

Leases, Codification Topic 842 (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021
Leases [Abstract]
Operating Lease, Expense	$ 39,800	$ 43,600	$ 33,900
Variable Lease, Cost	19,200	12,300	3,200
Operating Lease, Payments	34,000	32,000	32,500
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	11,100	84,600	$ 24,800
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	20,600
Lessee, Operating Lease, Liability, Payments, Due Year Two	32,700
Lessee, Operating Lease, Liability, Payments, Due Year Three	29,300
Lessee, Operating Lease, Liability, Payments, Due Year Four	28,500
Lessee, Operating Lease, Liability, Payments, Due Year Five	26,300
Lessee, Operating Lease, Liability, Payments, Due after Year Five	123,900
Lessee, Operating Lease, Liability, Payments, Due	261,300
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(44,300)
Operating Lease, Liability	$ 217,000	$ 225,400
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other Accrued Liabilities, Current	Other Accrued Liabilities, Current
Operating Lease, Liability, Noncurrent	$ 188,700	$ 206,900
Operating Lease, Weighted Average Remaining Lease Term	12 years 3 months 18 days	12 years 1 month 6 days
Operating Lease, Weighted Average Discount Rate, Percent	3.60%	3.30%
Lessee, Operating Lease, Term of Contract	40 years
Operating Lease, Liability, Current	$ 28,300	$ 18,500

Commitments (Rent Expense) (Det

Commitments (Rent Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021
Supply Commitment [Line Items]
Asset Impairment Charges	$ 64,500	$ 20,700	$ 7,100
Supply Commitment
Supply Commitment [Line Items]
Asset Impairment Charges	$ 47,500

Earnings Per Share (Schedule Of

Earnings Per Share (Schedule Of Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021
Earnings Per Share [Abstract]
Net income	$ 982.8	$ 1,275.2	$ 1,498.3
Weighted average shares outstanding - basic	159.4	162.4	165.2
Effect of dilutive equity based awards	0.9	0.9	1.8
Weighted average shares outstanding - diluted	160.3	163.3	167
Net income per share - basic (in dollars per share)	$ 6.17	$ 7.85	$ 9.07
Net income per share - diluted (in dollars per share)	$ 6.13	$ 7.81	$ 8.97
Anti-dilutive common stock equivalents	0.1	0.7	0

Segment Information (Geographic

Segment Information (Geographic Revenue) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 4,772,400	$ 5,485,500	$ 5,109,100
Contract with Customer, Refund Liability	270,900	226,900
Sales Channel, Through Intermediary
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4,235,700	4,488,100	4,539,700
Sales Channel, Directly to Consumer
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	536,700	997,400	569,400
Total Americas [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3,603,900	3,685,700	3,228,100
China
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	358,300	599,600	994,200
Taiwan
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	344,400	430,400	404,200
South Korea
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	198,300	458,200	264,500
Asia
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	204,200	235,800	180,100
Europe, Middle East and Africa [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 63,300	$ 75,800	$ 38,000

Segment Information (Geograph_2

Segment Information (Geographical Fixed Assets) (Details) - USD ($) $ in Millions	Sep. 29, 2023	Sep. 30, 2022
Property, Plant and Equipment, Net	$ 1,390.1	$ 1,604.8
MEXICO
Property, Plant and Equipment, Net	233.1	296.7
SINGAPORE
Property, Plant and Equipment, Net	606.4	679.7
UNITED STATES
Property, Plant and Equipment, Net	219.7	246
JAPAN
Property, Plant and Equipment, Net	307.5	363.3
Foreign Member Other [Member]
Property, Plant and Equipment, Net	$ 23.4	$ 19.1

Segment Information (Concentrat

Segment Information (Concentration) (Details)	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021
Credit Concentration Risk [Member]
Concentration Risk [Line Items]
Accounts receivable from major customers percentage	83%		70%
Credit Concentration Risk [Member] | Accounts Receivable
Concentration Risk [Line Items]
Accounts receivable from major customers percentage		79%
Company A [Member] | Customer Concentration Risk | Revenue Benchmark
Concentration Risk [Line Items]
Revenue from major customers percentage	66%	58%	59%

Debt (Details)

Debt (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021	Jul. 26, 2021	May 26, 2021
Debt Instrument [Line Items]
Repayments of Long-term Debt	$ 900,000	$ 50,000	$ 250,000
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net	(7,700)	(10,900)
Debt, Long-Term and Short-Term, Combined Amount	1,292,300	2,189,100
Long-term Debt	992,900	1,689,900
Debt, Current	299,400	499,200
AdditionalborrowingcapacityonRevolvingCreditFacility	250,000
Proceeds from Issuance of Debt	0	0	2,488,200
Term Loan Facility
Debt Instrument [Line Items]
Repayments of Long-term Debt	400,000	50,000	$ 250,000
Long-term Debt, Gross	$ 300,000	700,000
Debt Instrument, Interest Rate, Effective Percentage	6.37%
Debt Instrument Covenant Compliance Maximum Leverage Ratio [Line Items]	3
Line of Credit Facility, Maximum Borrowing Capacity				$ 1,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 0
Debt Instrument Covenant Compliance Maximum Leverage Ratio [Line Items]	3
Line of Credit Facility, Maximum Borrowing Capacity	$ 750,000
2023 Notes
Debt Instrument [Line Items]
Repayments of Long-term Debt	500,000
Long-term Debt, Gross	$ 0	500,000
Debt Instrument, Interest Rate, Effective Percentage	0%
Long-term Debt		499,200
Debt Instrument, Interest Rate, Stated Percentage					0.90%
2026 Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 500,000	500,000			$ 500,000
Debt Instrument, Interest Rate, Effective Percentage	1.97%
Long-term Debt	$ 497,700	496,800
Debt Instrument, Interest Rate, Stated Percentage					1.80%
2031 Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 500,000	500,000			$ 500,000
Debt Instrument, Interest Rate, Effective Percentage	3.13%
Long-term Debt	$ 495,200	$ 494,500
Debt Instrument, Interest Rate, Stated Percentage					3%
the Notes
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	101%

Other Liabilities (Details)

Other Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Oct. 01, 2021
Condensed Financial Information Disclosure [Abstract]
Accrued income taxes, current	$ 58,800	$ 48,800
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other Accrued Liabilities, Current	Other Accrued Liabilities, Current
Contract with Customer, Refund Liability	$ 270,900	$ 226,900
Other miscellaneous current liabilities [Line Items]	44,800	45,000
Other Accrued Liabilities, Current	402,800	339,200
Other Nonoperating Income (Expense)	18,200	(2,500)	$ (600)
Prepaid Expense, Current	306,000	242,300
Other miscellaneous current assets	$ 155,100	$ 95,200
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other Accrued Liabilities, Current	Other Accrued Liabilities, Current

Subsequent Events (Details)

Subsequent Events (Details) - Term Loan Facility - Subsequent Event [Member] $ in Thousands	Oct. 04, 2023 USD ($)
Subsequent Event [Line Items]
Repayments of Debt	$ 150,000
Short-Term Debt	$ 150,000