Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Apr. 02, 2021	Mar. 27, 2020
Statement of Cash Flows [Abstract]
Document Period End Date	Apr. 02, 2021
Net income	$ 834,300	$ 438,100
Adjustments to reconcile net income to net cash provided by operating activities:
Share-based compensation	100,800	73,800
Depreciation	158,200	160,300
Amortization	17,500	22,700
Deferred income taxes	(3,600)	1,100
Other, net	0	2,100
Changes in assets and liabilities:
Receivables, net	(105,400)	97,700
Inventory	61,800	(37,000)
Accounts payable	3,700	(13,200)
Other current and long-term assets and liabilities	33,500	(66,800)
Net Cash Provided by (Used in) Operating Activities	1,100,800	678,800
Cash flows from investing activities:
Payments to Acquire Property, Plant, and Equipment	259,800	171,900
Payments to Acquire Marketable Securities	(308,100)	(178,800)
Payments to Acquire Intangible Assets	5,900	200
Proceeds from Sale and Maturity of Debt Securities, Available-for-sale	358,900	214,400
Net Cash Provided by (Used in) Investing Activities	(214,900)	(136,500)
Cash flows from financing activities:
Repurchase of common stock - payroll tax withholdings on equity awards	(51,300)	(28,700)
Repurchase of common stock - stock repurchase program	(195,600)	(358,000)
Dividends paid	(165,600)	(150,000)
Net proceeds from exercise of stock options	7,100	43,300
Proceeds from Issuance of Common Stock	12,700	12,200
Net Cash Provided by (Used in) Financing Activities	(392,700)	(481,200)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	493,200	61,100
Cash and cash equivalents at beginning of period	566,700	851,300
Cash and cash equivalents at end of period	1,059,900	912,400
Supplemental cash flow disclosures:
Income taxes paid	73,700	81,100
Stock Issued	27,500	0
Capital Expenditures Incurred but Not yet Paid	124,300	95,400
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 13,300	$ 29,800