Skyworks Solutions (SWKS) 10-Q 29 Jan 21 2021 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - $ / shares	3 Months Ended
	Jan. 01, 2021	Jan. 22, 2021
Cover [Abstract]
Document Type	10-Q
Document Period End Date	Jan. 1, 2021
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-05560
Entity Registrant Name	Skyworks Solutions, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	04-2302115
Entity Address, Address Line One	5260 California Avenue
Entity Address, City or Town	Irvine
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92617
City Area Code	(949)
Local Phone Number	231-3000
Title of 12(b) Security	Common Stock, par value $0.25 per share
Trading Symbol	SWKS
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		164,900,017
Entity Listing, Par Value Per Share	$ 0.25
Entity Central Index Key	0000004127
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--10-01

Consolidated Statements Of Oper

Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Jan. 01, 2021	Dec. 27, 2019
Income Statement [Abstract]
Document Period End Date	Jan. 1, 2021
Net revenue	$ 1,510	$ 896.1
Cost of goods sold	748.3	451.8
Gross profit	761.7	444.3
Operating expenses:
Research and development	121.6	107.7
Selling, general, and administrative	66.6	55.4
Amortization of intangibles	2.8	3.1
Restructuring Costs and Asset Impairment Charges	0	0.8
Total operating expenses	191	167
Operating income	570.7	277.3
Other income, net	0.2	1.4
Income before income taxes	570.9	278.7
Provision for income taxes	61.6	21.6
Net income	$ 509.3	$ 257.1
Earnings per share:
Basic (in dollars per share)	$ 3.08	$ 1.51
Diluted (in dollars per share)	$ 3.05	$ 1.50
Weighted average shares:
Basic (in shares)	165.4	170.2
Diluted (in shares)	167	171.6
Common Stock, Dividends, Per Share, Declared	$ 0.50	$ 0.44

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Jan. 01, 2021	Dec. 27, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 509.3	$ 257.1
Other comprehensive income (loss), net of tax
Fair value of investments	(0.2)	(0.1)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax	(0.3)	0
Comprehensive income	$ 509.4	$ 257

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2021	Oct. 02, 2020
Statement of Financial Position [Abstract]
Document Period End Date	Jan. 1, 2021
Current assets:
Cash and cash equivalents	$ 617,200	$ 566,700
Marketable Securities, Current	401,400	408,100
Receivables, net of allowance of $0.6 and $0.6, respectively	689,900	393,600
Inventory	718,500	806,000
Other current assets	148,200	143,200
Total current assets	2,575,200	2,317,600
Property, plant, and equipment, net	1,305,400	1,249,500
Operating Lease, Right-of-Use Asset	172,400	167,900
Goodwill	1,189,800	1,189,800
Intangible assets, net	46,400	53,500
Deferred Income Tax Assets, Net	56,400	55,300
Marketable Securities, Noncurrent	700	5,200
Other long-term assets	73,500	67,900
Total assets	5,419,800	5,106,700
Current liabilities:
Accounts payable	264,600	226,900
Accrued compensation and benefits	85,000	113,500
Other current liabilities	158,000	108,000
Total current liabilities	507,600	448,400
Long-term tax liabilities	310,600	311,300
Operating Lease, Liability, Noncurrent	154,900	150,700
Other long-term liabilities	31,800	32,100
Total liabilities	1,004,900	942,500
Stockholders’ equity:
Preferred stock, no par value: 25.0 shares authorized, no shares issued	0	0
Common stock, $0.25 par value: 525.0 shares authorized; 233.4 shares issued and 164.9 shares outstanding at January 1, 2021, and 232.3 shares issued and 165.6 shares outstanding at October 2, 2020	41,200	41,400
Additional paid-in capital	3,471,600	3,403,700
Treasury stock, at cost	(4,336,900)	(4,093,500)
Retained earnings	5,246,700	4,820,400
Accumulated other comprehensive loss	(7,700)	(7,800)
Total stockholders’ equity	4,414,900	4,164,200
Total liabilities and stockholders’ equity	$ 5,419,800	$ 5,106,700

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Millions, $ in Millions	Jan. 01, 2021	Oct. 02, 2020
Current assets:
Allowance for doubtful accounts	$ 0.6	$ 0.6
Stockholders' Equity Attributable to Parent [Abstract]
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authorized	25	25
Preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 0.25	$ 0.25
Common stock, shares authorized	525	525
Common stock, shares issued	233.4	232.3
Common stock, shares outstanding	164.9	165.6

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2021	Dec. 27, 2019
Statement of Cash Flows [Abstract]
Document Period End Date	Jan. 1, 2021
Net income	$ 509,300	$ 257,100
Adjustments to reconcile net income to net cash provided by operating activities:
Share-based compensation	44,500	33,600
Depreciation	78,400	79,800
Amortization of intangible assets	8,000	11,400
Other, net	(700)	900
Changes in assets and liabilities:
Receivables, net	(296,300)	38,500
Inventory	88,900	7,900
Accounts payable	22,400	(6,700)
Other current and long-term assets and liabilities	30,600	(24,100)
Net Cash Provided by (Used in) Operating Activities	485,100	398,400
Cash flows from investing activities:
Payments to Acquire Property, Plant, and Equipment	118,900	111,200
Payments to Acquire Marketable Securities	(99,400)	(131,500)
Payments to Acquire Intangible Assets	4,300	0
Proceeds from Sale and Maturity of Debt Securities, Available-for-sale	111,600	62,200
Net Cash Provided by (Used in) Investing Activities	(111,000)	(180,500)
Cash flows from financing activities:
Repurchase of common stock - payroll tax withholdings on equity awards	(47,700)	(26,600)
Repurchase of common stock - stock repurchase program	(195,600)	(74,200)
Dividends paid	(83,000)	(75,100)
Net proceeds from exercise of stock options	2,700	34,900
Net Cash Provided by (Used in) Financing Activities	(323,600)	(141,000)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	50,500	76,900
Cash and cash equivalents at beginning of period	566,700	851,300
Cash and cash equivalents at end of period	617,200	928,200
Supplemental cash flow disclosures:
Income taxes paid	8,100	26,100
Stock Issued	27,500	0
Capital Expenditures Incurred but Not yet Paid	94,300	70,100
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 12,500	$ 20,700

Statement of Stockholders Equit

Statement of Stockholders Equity Statement - USD ($) shares in Millions, $ in Millions	Total	2019 Stock Repurchase Plan [Member]	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]
Common stock, shares outstanding			170.1
Stockholders' Equity Attributable to Parent	$ 4,122.3		$ 42.5	$ (3,412.9)	$ 3,188	$ 4,312.6	$ (7.9)
Treasury Stock, Shares				60.1
Net income	257.1					257.1
StockIssuedDuringPeriodSharesShareBasedCompensationNetofRelatedTaxes(inshares)			1.1	0.3
StockIssuedDuringPeriodValueShareBasedCompensationNetofRelatedTaxes	8.2		$ 0.3	$ (26.7)	34.6
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	$ 29.1				29.1
Treasury Stock, Shares, Acquired	(0.7)		(0.7)
Treasury Stock, Value, Acquired, Par Value Method	$ (74.2)		$ (0.2)	$ (74.2)	0.2
Stock Repurchased During Period, Shares				0.7
Dividends	(75.1)					(75.1)
Other Comprehensive Income (Loss), Net of Tax	0.1						(0.1)
Common stock, shares outstanding			170.5
Stockholders' Equity Attributable to Parent	$ 4,267.3		$ 42.6	$ (3,513.8)	3,251.9	4,494.6	(8)
Treasury Stock, Shares				61.1
Common stock, shares outstanding	165.6		165.6
Stockholders' Equity Attributable to Parent	$ 4,164.2		$ 41.4	$ (4,093.5)	3,403.7	4,820.4	(7.8)
Treasury Stock, Shares				66.7
Net income	509.3
StockIssuedDuringPeriodSharesShareBasedCompensationNetofRelatedTaxes(inshares)			0.7	0.4
StockIssuedDuringPeriodValueShareBasedCompensationNetofRelatedTaxes	(45)		$ 0.2	$ (47.8)	2.6
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	$ 64.9				64.9
Treasury Stock, Shares, Acquired	(1.4)		(1.4)
Treasury Stock, Value, Acquired, Par Value Method	$ (195.6)		$ (0.4)		0.4
Stock Repurchased During Period, Shares				1.4
Dividends	(83)					(83)
Other Comprehensive Income (Loss), Net of Tax	$ (0.1)						0.1
Stock repurchase program expiration date		Jan. 30, 2021
Common stock, shares outstanding	164.9		164.9
Stockholders' Equity Attributable to Parent	$ 4,414.9		$ 41.2	$ (4,336.9)	$ 3,471.6	$ 5,246.7	$ (7.7)
Treasury Stock, Shares				68.5
Authorized amount of stock for repurchase		$ 2,000
Remaining amount authorized fro stock repurchase		$ 780

Description Of Business and Bas

Description Of Business and Basis Of Presentation	3 Months Ended
	Jan. 01, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION	DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION Skyworks Solutions, Inc., together with its consolidated subsidiaries (“Skyworks” or the “Company”), is empowering the wireless networking revolution. The Company’s analog semiconductors are connecting people, places, and things, spanning a number of new applications within the aerospace, automotive, broadband, cellular infrastructure, connected home, entertainment and gaming, industrial, medical, military, smartphone, tablet, and wearable markets. The accompanying unaudited interim consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) for interim financial reporting. Certain information and footnote disclosures, normally included in annual consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”), have been condensed or omitted pursuant to those rules and regulations. However, in management’s opinion, the financial information reflects all adjustments, including those of a normal recurring nature, necessary to present fairly the results of operations, financial position, and cash flows of the Company for the periods presented. The results of operations, financial position, and cash flows for the Company during the interim periods are not necessarily indicative of those expected for the full year. This information should be read in conjunction with the Company’s financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the fiscal year ended October 2, 2020, filed with the SEC on November 17, 2020 (“2020 10-K”). 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 in these unaudited consolidated financial statements and accompanying disclosures. 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, loss contingencies, and income taxes. In addition, judgment is required in determining whether a potential indicator of impairment of long-lived assets exists and in estimating future cash flows for any necessary impairment testing. Actual results could differ significantly from these estimates.

Marketable Securities

Marketable Securities	3 Months Ended
	Jan. 01, 2021
Investments, Debt and Equity Securities [Abstract]
MARKETABLE SECURITIES	MARKETABLE SECURITIES The Company's portfolio of available-for-sale marketable securities consists of the following (in millions): Current Noncurrent Available for sale: January 1, October 2, January 1, October 2, U.S. Treasury and government $ 128.4 $ 129.4 $ 0.7 $ 5.0 Corporate bonds and notes 258.1 276.8 — — Municipal bonds 14.9 1.9 — 0.2 Total $ 401.4 $ 408.1 $ 0.7 $ 5.2

Fair Value

Fair Value	3 Months Ended
	Jan. 01, 2021
Fair Value Disclosures [Abstract]
FAIR VALUE	4. FAIR VALUE Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis The Company groups its financial assets and liabilities measured at fair value on a recurring basis in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. These levels are: • 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. Assets and liabilities recorded at fair value on a recurring basis consisted of the following (in millions): As of January 1, 2021 As of October 2, 2020 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* $ 617.2 $ 602.4 $ 14.8 $ — $ 566.7 $ 561.2 $ 5.5 $ — U.S. Treasury and government securities 129.1 38.1 91.0 — 134.4 43.2 91.2 — Corporate bonds and notes 258.1 — 258.1 — 276.8 — 276.8 — Municipal bonds 14.9 — 14.9 — 2.1 — 2.1 — Total $ 1,019.3 $ 640.5 $ 378.8 $ — $ 980.0 $ 604.4 $ 375.6 $ — * Cash equivalents included in Levels 1 and 2 consist of money market funds and corporate bonds and notes, commercial paper, 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. There were no indicators of impairment identified during the three months ended January 1, 2021.

Inventory

Inventory	3 Months Ended
	Jan. 01, 2021
Inventory, Net [Abstract]
INVENTORY	INVENTORY Inventory consists of the following (in millions): As of January 1, October 2, Raw materials $ 39.9 $ 37.8 Work-in-process 547.0 566.4 Finished goods 129.7 198.9 Finished goods held on consignment by customers 1.9 2.9 Total inventory $ 718.5 $ 806.0

Property, Plant And Equipment

Property, Plant And Equipment	3 Months Ended
	Jan. 01, 2021
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 January 1, October 2, Land and improvements $ 11.8 $ 11.8 Buildings and improvements 431.9 424.8 Furniture and fixtures 49.1 46.5 Machinery and equipment 2,642.5 2,556.1 Construction in progress 167.3 140.7 Total property, plant, and equipment, gross 3,302.6 3,179.9 Accumulated depreciation (1,997.2) (1,930.4) Total property, plant, and equipment, net $ 1,305.4 $ 1,249.5

Goodwill And Intangible Assets

Goodwill And Intangible Assets	3 Months Ended
	Jan. 01, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND INTANGIBLE ASSETS	GOODWILL AND INTANGIBLE ASSETS There were no changes to the carrying amount of goodwill during the three months ended January 1, 2021. The Company tests its goodwill for impairment annually as of the first day of its fourth fiscal quarter and in interim periods if certain events occur indicating the carrying value of goodwill may be impaired. There were no indicators of impairment noted during the three months ended January 1, 2021. Intangible assets consist of the following (in millions): As of As of Weighted January 1, 2021 October 2, 2020 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Customer relationships 5.0 $ 18.2 $ (16.7) $ 1.5 $ 18.2 $ (15.8) $ 2.4 Developed technology and other 5.0 60.9 (46.3) 14.6 101.0 (81.6) 19.4 Trademarks 3.0 — — — 1.6 (1.5) 0.1 Technology licenses 3.1 27.3 (16.5) 10.8 26.3 (14.2) 12.1 IPR&D 19.5 — 19.5 19.5 — 19.5 Total intangible assets $ 125.9 $ (79.5) $ 46.4 $ 166.6 $ (113.1) $ 53.5 Fully amortized intangible assets are eliminated from both the gross and accumulated amortization amounts in the first quarter of each fiscal year. 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): Remaining 2021 2022 2023 2024 2025 Thereafter Amortization expense, cost of goods sold $ 3.0 $ 0.1 $ 0.1 $ 0.1 $ 0.1 $ 1.7 Amortization expense, operating expense $ 12.2 $ 5.3 $ 1.3 $ 1.0 $ 1.0 $ 1.0 Total amortization expense $ 15.2 $ 5.4 $ 1.4 $ 1.1 $ 1.1 $ 2.7

Income Taxes

Income Taxes	3 Months Ended
	Jan. 01, 2021
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES The provision for income taxes consists of the following components (in millions): Three Months Ended January 1, December 27, United States income taxes $ 41.0 $ 11.5 Foreign income taxes 20.6 10.1 Provision for income taxes $ 61.6 $ 21.6 Effective tax rate 10.8 % 7.8 % The difference between the Company’s effective tax rate and the 21.0% United States federal statutory rate for the three months ended January 1, 2021 and December 27, 2019, respectively, resulted primarily from foreign earnings taxed at rates lower than the federal statutory rate, a benefit from foreign-derived intangible income deduction (“FDII”), windfall tax deductions, and research and experimentation and foreign tax credits earned, partially offset by a tax on global intangible low-taxed income (“GILTI”), and tax expense related to a change in the reserve for uncertain tax positions.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Jan. 01, 2021
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	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. From time to time, 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. 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.

Stockholder's Equity

Stockholder's Equity	3 Months Ended
	Jan. 01, 2021
Stockholders' Equity Note [Abstract]
STOCKHOLDERS' EQUITY	STOCKHOLDERS’ EQUITY Stock Repurchase Program On January 30, 2019, the Board of Directors approved a 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 prior to January 30, 2021, on the open market or in privately negotiated transactions, as permitted by securities laws and other legal requirements. During the three months ended January 1, 2021, the Company paid $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). During the three months ended December 27, 2019, the Company paid $74.2 million (including commissions) in connection with the repurchase of 0.7 million shares of its common stock (paying an average price of $100.01 per share). As of January 1, 2021, $0.78 billion remained available under the January 30, 2019, stock repurchase authorization. On January 26, 2021, the Board of Directors approved a new 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 prior to January 26, 2023, on the open market or in privately negotiated transactions, as permitted by securities laws and other legal requirements. This newly authorized stock repurchase plan replaces in its entirety the aforementioned January 30, 2019, plan. The timing and amount of any shares of the Company’s common stock that are repurchased under the new repurchase program will be determined by the Company’s management based on its evaluation of market conditions and other factors. The repurchase program may be suspended or discontinued at any time. The Company currently expects to fund the repurchase program using the Company’s working capital. Dividends On January 28, 2021, the Company announced that the Board of Directors had declared a cash dividend on the Company’s common stock of $0.50 per share. This dividend is payable on March 9, 2021, to the Company’s stockholders of record as of the close of business on February 16, 2021. During the three months ended January 1, 2021, the Company declared and paid a $0.50 dividend per share of common stock with a total charge to retained earnings of $83.0 million. Share-based Compensation The following table summarizes the share-based compensation expense by line item in the Statements of Operations (in millions): Three Months Ended January 1, December 27, Cost of goods sold $ 6.4 $ 4.2 Research and development 20.3 14.8 Selling, general and administrative 17.8 14.6 Total share-based compensation $ 44.5 $ 33.6

Earnings Per Share

Earnings Per Share	3 Months Ended
	Jan. 01, 2021
Earnings Per Share [Abstract]
EARNINGS PER SHARE	EARNINGS PER SHAREThe following table sets forth the computation of basic and diluted earnings per share (in millions, except per share amounts): Three Months Ended January 1, December 27, Net income $ 509.3 $ 257.1 Weighted average shares outstanding – basic 165.4 170.2 Dilutive effect of equity-based awards 1.6 1.4 Weighted average shares outstanding – diluted 167.0 171.6 Net income per share – basic $ 3.08 $ 1.51 Net income per share – diluted $ 3.05 $ 1.50 Anti-dilutive common stock equivalents — 0.5 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 three months ended January 1, 2021, and December 27, 2019, 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. 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.

Revenue Recognition (Notes)

Revenue Recognition (Notes)	3 Months Ended
	Jan. 01, 2021
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]	2. REVENUE RECOGNITION The Company presents net revenue by geographic area based upon the location of the original equipment manufacturers’ (“OEMs”) headquarters 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. Net revenue by geographic area is as follows (in millions): Three Months Ended January 1, December 27, United States $ 1,101.6 $ 590.4 China 212.6 168.4 Taiwan 87.5 42.0 South Korea 68.0 59.0 Europe, Middle East, and Africa 33.8 30.3 Other Asia-Pacific 6.5 6.0 Total $ 1,510.0 $ 896.1

Other Liabilities

Other Liabilities	3 Months Ended
	Jan. 01, 2021
Other Liabilities Disclosure [Abstract]
Supplemental Balance Sheet Disclosures	12. SUPPLEMENTAL BALANCE SHEET INFORMATION Other current liabilities consist of the following (in millions): As of January 1, October 2, Accrued taxes 80.5 31.2 Operating lease liability 30.8 28.2 Accrued customer liabilities 21.5 20.3 Other 25.2 28.3 Total other current liabilities 158.0 108.0

Description Of Business and B_2

Description Of Business and Basis Of Presentation (Policies)	3 Months Ended
	Jan. 01, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Fiscal Period	The Company’s fiscal year ends on the Friday closest to September 30. Fiscal 2021 consists of 52 weeks and ends on October 1, 2021. Fiscal 2020 consisted of 53 weeks and ended on October 2, 2020. The first quarters of fiscal 2021 and 2020 each consisted of 13 weeks and ended on January 1, 2021, and December 27, 2019, respectively.

Marketable Securities (Tables)

Marketable Securities (Tables)	3 Months Ended
	Jan. 01, 2021
Investments, Debt and Equity Securities [Abstract]
Marketable Securities	The Company's portfolio of available-for-sale marketable securities consists of the following (in millions): Current Noncurrent Available for sale: January 1, October 2, January 1, October 2, U.S. Treasury and government $ 128.4 $ 129.4 $ 0.7 $ 5.0 Corporate bonds and notes 258.1 276.8 — — Municipal bonds 14.9 1.9 — 0.2 Total $ 401.4 $ 408.1 $ 0.7 $ 5.2

Fair Value (Tables)

Fair Value (Tables)	3 Months Ended
	Jan. 01, 2021
Fair Value Disclosures [Abstract]
Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis	Assets and liabilities recorded at fair value on a recurring basis consisted of the following (in millions): As of January 1, 2021 As of October 2, 2020 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* $ 617.2 $ 602.4 $ 14.8 $ — $ 566.7 $ 561.2 $ 5.5 $ — U.S. Treasury and government securities 129.1 38.1 91.0 — 134.4 43.2 91.2 — Corporate bonds and notes 258.1 — 258.1 — 276.8 — 276.8 — Municipal bonds 14.9 — 14.9 — 2.1 — 2.1 — Total $ 1,019.3 $ 640.5 $ 378.8 $ — $ 980.0 $ 604.4 $ 375.6 $ —

Inventory (Tables)

Inventory (Tables)	3 Months Ended
	Jan. 01, 2021
Inventory, Net [Abstract]
Schedule Of Inventories	Inventory consists of the following (in millions): As of January 1, October 2, Raw materials $ 39.9 $ 37.8 Work-in-process 547.0 566.4 Finished goods 129.7 198.9 Finished goods held on consignment by customers 1.9 2.9 Total inventory $ 718.5 $ 806.0

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	3 Months Ended
	Jan. 01, 2021
Property, Plant and Equipment [Abstract]
Schedule Of Property, Plant And Equipment	Property, plant, and equipment, net consists of the following (in millions): As of January 1, October 2, Land and improvements $ 11.8 $ 11.8 Buildings and improvements 431.9 424.8 Furniture and fixtures 49.1 46.5 Machinery and equipment 2,642.5 2,556.1 Construction in progress 167.3 140.7 Total property, plant, and equipment, gross 3,302.6 3,179.9 Accumulated depreciation (1,997.2) (1,930.4) Total property, plant, and equipment, net $ 1,305.4 $ 1,249.5

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	3 Months Ended
	Jan. 01, 2021
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 January 1, 2021 October 2, 2020 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Customer relationships 5.0 $ 18.2 $ (16.7) $ 1.5 $ 18.2 $ (15.8) $ 2.4 Developed technology and other 5.0 60.9 (46.3) 14.6 101.0 (81.6) 19.4 Trademarks 3.0 — — — 1.6 (1.5) 0.1 Technology licenses 3.1 27.3 (16.5) 10.8 26.3 (14.2) 12.1 IPR&D 19.5 — 19.5 19.5 — 19.5 Total intangible assets $ 125.9 $ (79.5) $ 46.4 $ 166.6 $ (113.1) $ 53.5
Schedule Of Expected Annual Amortization Expense Related To Intangible Assets For The Next Five Years	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): Remaining 2021 2022 2023 2024 2025 Thereafter Amortization expense, cost of goods sold $ 3.0 $ 0.1 $ 0.1 $ 0.1 $ 0.1 $ 1.7 Amortization expense, operating expense $ 12.2 $ 5.3 $ 1.3 $ 1.0 $ 1.0 $ 1.0 Total amortization expense $ 15.2 $ 5.4 $ 1.4 $ 1.1 $ 1.1 $ 2.7

Income Taxes (Tables)

Income Taxes (Tables)	3 Months Ended
	Jan. 01, 2021
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit)	The provision for income taxes consists of the following components (in millions): Three Months Ended January 1, December 27, United States income taxes $ 41.0 $ 11.5 Foreign income taxes 20.6 10.1 Provision for income taxes $ 61.6 $ 21.6 Effective tax rate 10.8 % 7.8 %

Stockholder's Equity (Tables)

Stockholder's Equity (Tables)	3 Months Ended
	Jan. 01, 2021
Stockholders' Equity Note [Abstract]
Dividends Declared	During the three months ended January 1, 2021, the Company declared and paid a $0.50 dividend per share of common stock with a total charge to retained earnings of $83.0 million.
Schedule of share-based compensation expense	The following table summarizes the share-based compensation expense by line item in the Statements of Operations (in millions): Three Months Ended January 1, December 27, Cost of goods sold $ 6.4 $ 4.2 Research and development 20.3 14.8 Selling, general and administrative 17.8 14.6 Total share-based compensation $ 44.5 $ 33.6

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Jan. 01, 2021
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): Three Months Ended January 1, December 27, Net income $ 509.3 $ 257.1 Weighted average shares outstanding – basic 165.4 170.2 Dilutive effect of equity-based awards 1.6 1.4 Weighted average shares outstanding – diluted 167.0 171.6 Net income per share – basic $ 3.08 $ 1.51 Net income per share – diluted $ 3.05 $ 1.50 Anti-dilutive common stock equivalents — 0.5

Revenue Recognition (Tables)

Revenue Recognition (Tables)	3 Months Ended
	Jan. 01, 2021
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Table Text Block]	The Company presents net revenue by geographic area based upon the location of the original equipment manufacturers’ (“OEMs”) headquarters 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. Net revenue by geographic area is as follows (in millions): Three Months Ended January 1, December 27, United States $ 1,101.6 $ 590.4 China 212.6 168.4 Taiwan 87.5 42.0 South Korea 68.0 59.0 Europe, Middle East, and Africa 33.8 30.3 Other Asia-Pacific 6.5 6.0 Total $ 1,510.0 $ 896.1

Other Liabilities (Tables)

Other Liabilities (Tables)	3 Months Ended
	Jan. 01, 2021
Other Liabilities Disclosure [Abstract]
Other Current Liabilities	Other current liabilities consist of the following (in millions): As of January 1, October 2, Accrued taxes 80.5 31.2 Operating lease liability 30.8 28.2 Accrued customer liabilities 21.5 20.3 Other 25.2 28.3 Total other current liabilities 158.0 108.0

Description Of Business and B_3

Description Of Business and Basis Of Presentation (Details)	3 Months Ended
	Jan. 01, 2021	Dec. 27, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of weeks in fiscal year	1 year	1 year
Number of weeks in fiscal quarter	3 months	3 months

Description Of Business and B_4

Description Of Business and Basis Of Presentation (New Accounting Pronouncements) (Details)	3 Months Ended
	Jan. 01, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Document Period End Date	Jan. 1, 2021

Marketable Securities (Details)

Marketable Securities (Details) - USD ($) $ in Millions	Jan. 01, 2021	Oct. 02, 2020
Other Current Assets [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	$ 401.4	$ 408.1
Other Noncurrent Assets [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0.7	5.2
US Treasury and Government [Member] | Other Current Assets [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	128.4	129.4
US Treasury and Government [Member] | Other Noncurrent Assets [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0.7	5
Corporate Debt Securities [Member] | Other Current Assets [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	258.1	276.8
Corporate Debt Securities [Member] | Other Noncurrent Assets [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0	0
US States and Political Subdivisions Debt Securities [Member] | Other Current Assets [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	14.9	1.9
US States and Political Subdivisions Debt Securities [Member] | Other Noncurrent Assets [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	$ 0	$ 0.2

Marketable Securities Schedule

Marketable Securities Schedule of Available-for-sale Securities (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 01, 2021	Oct. 02, 2020
Debt Securities, Available-for-sale [Line Items]
Document Period End Date	Jan. 1, 2021
US Treasury and Government [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	$ 0.2	$ 0.3
Corporate Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	$ 0.1	$ 0.2

Marketable Securities Contractu

Marketable Securities Contractual Maturity (Details)	3 Months Ended
	Jan. 01, 2021
Investments, Debt and Equity Securities [Abstract]
Available-for-sale Securities, Debt Maturities, Date	2 years

Fair Value (Fair value transfer

Fair Value (Fair value transfers) (Details)	3 Months Ended
	Jan. 01, 2021USD ($)
Fair Value Disclosures [Abstract]
Transfer of assets from L1 to L2	$ 0
Transfers of assets from L2 to L1	0
Transfers of assets into L3	0
Transfer of liabilities from L1 to L2	0
Transfers of liabilities from L2 to L1	$ 0

Fair Value (Schedule Of Financi

Fair Value (Schedule Of Financial Instruments Measured At Fair Value On Recurring Basis) (Details) - Fair Value, Recurring [Member] - USD ($) $ in Millions	Jan. 01, 2021	Oct. 02, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents*	$ 617.2	$ 566.7
Assets, Fair Value Disclosure, Recurring (Deprecated 2018-01-31)	1,019.3	980
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents*	602.4	561.2
Assets, Fair Value Disclosure, Recurring (Deprecated 2018-01-31)	640.5	604.4
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents*	14.8	5.5
Assets, Fair Value Disclosure, Recurring (Deprecated 2018-01-31)	378.8	375.6
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents*	0	0
Assets, Fair Value Disclosure, Recurring (Deprecated 2018-01-31)	0	0
US Treasury and Government [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	129.1	134.4
US Treasury and Government [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	38.1	43.2
US Treasury and Government [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	91	91.2
US Treasury and Government [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	0
Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	258.1	276.8
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	0
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	258.1	276.8
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	0
US States and Political Subdivisions Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	14.9	2.1
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	0
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	14.9	2.1
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	$ 0	$ 0

Inventory (Schedule Of Inventor

Inventory (Schedule Of Inventories) (Details) - USD ($) $ in Millions	Jan. 01, 2021	Oct. 02, 2020
Inventory, Net [Abstract]
Raw materials	$ 39.9	$ 37.8
Work-in-process	547	566.4
Finished goods	129.7	198.9
Finished goods held on consignment by customers	1.9	2.9
Total inventory	$ 718.5	$ 806

Property, Plant and Equipment_2

Property, Plant and Equipment (Schedule Of Property, Plant And Equipment) (Details) - USD ($) $ in Millions	Jan. 01, 2021	Oct. 02, 2020
Property, Plant and Equipment
Total property, plant, and equipment, gross	$ 3,302.6	$ 3,179.9
Accumulated depreciation	(1,997.2)	(1,930.4)
Total property, plant, and equipment, net	1,305.4	1,249.5
Land and improvements [Member]
Property, Plant and Equipment
Total property, plant, and equipment, gross	11.8	11.8
Building and improvements [Member]
Property, Plant and Equipment
Total property, plant, and equipment, gross	431.9	424.8
Furniture and fixtures [Member]
Property, Plant and Equipment
Total property, plant, and equipment, gross	49.1	46.5
Machinery and equipment [Member]
Property, Plant and Equipment
Total property, plant, and equipment, gross	2,642.5	2,556.1
Construction in progress [Member]
Property, Plant and Equipment
Total property, plant, and equipment, gross	$ 167.3	$ 140.7

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets (Schedule Of Intangible Assets Subject To Amortization) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2021	Oct. 02, 2020
Finite-Lived Intangible Assets [Line Items]
Document Period End Date	Jan. 1, 2021
Accumulated Amortization	$ (79,500)	$ (113,100)
Total intangible assets, Gross Carrying Amount	125,900	166,600
Total intangible assets, Net Carrying Amount	$ 46,400	53,500
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (Years)	5 years
Finite-Lived Intangible Assets, Gross	$ 18,200	18,200
Accumulated Amortization	(16,700)	(15,800)
Net Carrying Amount	$ 1,500	2,400
Technology-Based Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (Years)	5 years
Finite-Lived Intangible Assets, Gross	$ 60,900	101,000
Accumulated Amortization	(46,300)	(81,600)
Net Carrying Amount	$ 14,600	19,400
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (Years)	3 years
Finite-Lived Intangible Assets, Gross	$ 0	1,600
Accumulated Amortization	0	(1,500)
Net Carrying Amount	$ 0	100
Computer Software, Intangible Asset [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (Years)	3 years 1 month 6 days
Finite-Lived Intangible Assets, Gross	$ 27,300	26,300
Accumulated Amortization	(16,500)	(14,200)
Net Carrying Amount	10,800	12,100
In Process Research and Development [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	19,500	19,500
Accumulated Amortization	0	0
Net Carrying Amount	$ 19,500	$ 19,500

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets (Schedule Of Expected Annual Amortization Expense Related To Intangible Assets For The Next Five Years) (Details) $ in Millions	Jan. 01, 2021USD ($)
Expected Annual Amortization Expense related to intangible assets for the next five years [Line Items]
Remaining 2019	$ 15.2
2020	5.4
2021	1.4
2022	1.1
2023	1.1
Thereafter	2.7
Cost of sales [Member]
Expected Annual Amortization Expense related to intangible assets for the next five years [Line Items]
Remaining 2019	3
2020	0.1
2021	0.1
2022	0.1
2023	0.1
Thereafter	1.7
Operating Expense [Member]
Expected Annual Amortization Expense related to intangible assets for the next five years [Line Items]
Remaining 2019	12.2
2020	5.3
2021	1.3
2022	1
2023	1
Thereafter	$ 1

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 01, 2021	Dec. 27, 2019
Income Tax Disclosure [Abstract]
Document Period End Date	Jan. 1, 2021
United States income taxes	$ 41	$ 11.5
Foreign income taxes	20.6	10.1
Provision for income taxes	$ 61.6	$ 21.6
Effective tax rate	10.80%	7.80%

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2021	Oct. 02, 2020
Income Tax Disclosure [Abstract]
Federal statutory income tax rate	21.00%
Accrued income taxes, current	$ 80,500	$ 31,200
Income Tax Holiday, Termination Date	September 30, 2030

Stockholder's Equity (Share Rep

Stockholder's Equity (Share Repurchase) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	Jan. 26, 2021	Jan. 01, 2021	Dec. 27, 2019
Equity, Class of Treasury Stock [Line Items]
Stock repurchased		$ 195.6	$ 74.2
Treasury Stock, Shares, Acquired		1.4	0.7
Average price of stock repurchased (in dollars per share)		$ 138.85	$ 100.01
2019 Stock Repurchase Plan [Member]
Equity, Class of Treasury Stock [Line Items]
Authorized amount of stock for repurchase		$ 2,000
Stock repurchase program expiration date		Jan. 30, 2021
Remaining amount authorized fro stock repurchase		$ 780
Subsequent Event [Member] | 2021 Stock Repurchase Plan [Member]
Equity, Class of Treasury Stock [Line Items]
Authorized amount of stock for repurchase	$ 2,000
Stock repurchase program expiration date	Jan. 26, 2023

Stockholder's Equity (Dividend)

Stockholder's Equity (Dividend) (Details) - USD ($) $ / shares in Units, $ in Millions	Mar. 09, 2021	Feb. 16, 2021	Jan. 28, 2021	Jan. 01, 2021	Dec. 27, 2019
Dividends Payable [Line Items]
Document Period End Date				Jan. 1, 2021
Payments of Ordinary Dividends				$ 83	$ 75.1
Payments of ordinary dividends				$ 83
Common Stock, Dividends, Per Share, Declared				$ 0.50	$ 0.44
Subsequent Event [Member] | Dividend Declared [Member]
Dividends Payable [Line Items]
Dividend declaration date			Jan. 28, 2021
dividends date to be paid	Mar. 9, 2021
Dividends date of record		Feb. 16, 2021
Cash dividends declared and paid per share (usd per share)	$ 0.50

Stockholder's Equity (Share Bas

Stockholder's Equity (Share Based Compensation) (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 01, 2021	Dec. 27, 2019
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Document Period End Date	Jan. 1, 2021
Share-based compensation expense	$ 44.5	$ 33.6
Cost of sales [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation expense	6.4	4.2
Research and development [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation expense	20.3	14.8
Selling, general and administrative [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation expense	$ 17.8	$ 14.6

Earnings Per Share (Schedule Of

Earnings Per Share (Schedule Of Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Jan. 01, 2021	Dec. 27, 2019
Earnings Per Share [Abstract]
Net income	$ 509.3	$ 257.1
Weighted average shares outstanding - basic (shares)	165.4	170.2
Dilutive effect of equity based awards (shares)	1.6	1.4
Weighted average shares outstanding - diluted (shares)	167	171.6
Net income per share - basic (usd per share)	$ 3.08	$ 1.51
Net income per share - diluted (usd per share)	$ 3.05	$ 1.50
Anti-dilutive common stock equivalents (shares)	0	0.5

Revenue Recognition (Details)

Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 01, 2021	Dec. 27, 2019
Disaggregation of Revenue [Line Items]
Document Period End Date	Jan. 1, 2021
Revenues	$ 1,510	$ 896.1
UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues	1,101.6	590.4
CHINA
Disaggregation of Revenue [Line Items]
Revenues	212.6	168.4
KOREA, REPUBLIC OF
Disaggregation of Revenue [Line Items]
Revenues	68	59
TAIWAN, PROVINCE OF CHINA
Disaggregation of Revenue [Line Items]
Revenues	87.5	42
EMEA [Member]
Disaggregation of Revenue [Line Items]
Revenues	33.8	30.3
Asia, Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 6.5	$ 6

Other Liabilities (Details)

Other Liabilities (Details) - USD ($) $ in Thousands	Jan. 01, 2021	Oct. 02, 2020
Other Liabilities Disclosure [Abstract]
Accrued income taxes, current	$ 80,500	$ 31,200
Operating Lease, Liability, Current	30,800	28,200
Contract with Customer, Refund Liability	21,500	20,300
Other miscellaneous current liabilities [Line Items]	25,200	28,300
Other Accrued Liabilities, Current	$ 158,000	$ 108,000