Consolidated Statements Of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Jun. 28, 2019	Jun. 29, 2018
Statement of Cash Flows [Abstract]
Net income	$ 643.0	$ 632.9
Adjustments to reconcile net income to net cash provided by operating activities:
Share-based compensation	58.6	86.3
Depreciation	235.4	198.9
Amortization of intangible assets, including inventory step-up	43.3	16.5
Deferred income taxes	(12.1)	35.6
Changes in fair value of contingent consideration	(3.1)	(7.8)
Other, net	0.1	0.3
Changes in assets and liabilities:
Receivables, net	98.0	(13.7)
Inventory	(89.7)	(10.2)
Other current and long-term assets	(44.1)	(45.8)
Accounts payable	(24.5)	(56.3)
Other current and long-term liabilities	45.5	216.3
Net cash provided by operating activities	950.4	1,053.0
Cash flows from investing activities:
Capital expenditures	(314.0)	(310.0)
Payments for Software	(11.8)	(8.6)
Payments to Acquire Marketable Securities	(243.7)	(523.2)
Maturity of investments	334.4	32.6
Net cash used in investing activities	(235.1)	(809.2)
Cash flows from financing activities:
Repurchase of common stock - payroll tax withholdings on equity awards	(21.6)	(47.5)
Repurchase of common stock - stock repurchase program	(511.3)	(524.5)
Dividends paid	(198.8)	(175.2)
Net proceeds from exercise of stock options	14.6	34.8
Proceeds from Issuance of Common Stock	11.3	9.9
Net cash used in financing activities	(705.8)	(702.5)
Net increase in cash and cash equivalents	9.5	(458.7)
Cash and cash equivalents at beginning of period	733.3	1,616.8
Cash and cash equivalents at end of period	742.8	1,158.1
Supplemental cash flow disclosures:
Income taxes paid	$ 116.5	$ 117.1