Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Jan. 01, 2021
Statement of Cash Flows [Abstract]
Document Period End Date	Dec. 31, 2021
Net income	$ 399,900	$ 509,300
Adjustments to reconcile net income to net cash provided by operating activities:
Share-based compensation	50,400	44,500
Depreciation	94,200	78,400
Amortization	87,300
Deferred income taxes	6,100	(700)
Amortization of Debt Issuance Costs and Discounts	1,000	0
Other Noncash Income (Expense)	1,000	0
Changes in assets and liabilities:
Receivables, net	(17,800)	(296,300)
Inventory	35,500	88,900
Accounts payable	(500)	22,400
Other current and long-term assets and liabilities	(75,400)	30,600
Net Cash Provided by (Used in) Operating Activities	581,700	485,100
Cash flows from investing activities:
Payments to Acquire Property, Plant, and Equipment	95,800	118,900
Payments to Acquire Marketable Securities	(29,600)	(99,400)
Payments to Acquire Intangible Assets	5,800	4,300
Proceeds from Sale and Maturity of Debt Securities, Available-for-sale	33,200	111,600
Net Cash Provided by (Used in) Investing Activities	(98,000)	(111,000)
Cash flows from financing activities:
Repurchase of common stock - payroll tax withholdings on equity awards	(80,100)	(47,700)
Repurchase of common stock - stock repurchase program	(269,400)	(195,600)
Dividends paid	(92,500)	(83,000)
Net proceeds from exercise of stock options	1,800	2,700
Repayments of Long-term Debt	(50,000)	0
Net Cash Provided by (Used in) Financing Activities	(490,200)	(323,600)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	(6,500)	50,500
Cash and cash equivalents at beginning of period	882,900	566,700
Cash and cash equivalents at end of period	876,400	617,200
Supplemental cash flow disclosures:
Income taxes paid	12,700	8,100
Interest Paid, Excluding Capitalized Interest, Operating Activities	16,700	0
Stock Issued	32,200	27,500
Capital Expenditures Incurred but Not yet Paid	73,200	94,300
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 26,600	$ 12,500