Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Sep. 28, 2018	Sep. 29, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net Income	$ 918.4	$ 1,010.2	$ 995.2
Adjustments to reconcile net income to net cash provided by operating activities:
Share-based compensation	107.8	88.5	78.0
Depreciation	272.5	227.2	214.4
Amortization of intangible assets	26.7	27.6	33.4
Deferred income taxes	27.3	2.2	0.0
Excess tax benefit from share-based compensation	0.0	(40.8)	(43.7)
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	(11.9)	(1.3)	0.0
Other	(0.7)	0.3	0.3
Changes in assets and liabilities net of acquired balances:
Receivables, net	(193.8)	(37.1)	121.4
Inventory	11.9	(69.2)	(147.3)
Other current and long-term assets	(12.2)	3.3	(20.4)
Accounts payable	(126.0)	147.8	(181.5)
Other current and long-term liabilities	240.6	97.6	27.9
Net cash provided by operating activities	1,260.6	1,456.3	1,077.7
Cash flows from investing activities:
Capital expenditures	(422.3)	(303.3)	(189.3)
Payments for acquisitions, net of cash acquired	(404.0)	(13.7)	(55.6)
Purchased intangibles	(8.6)	(12.1)	(6.0)
Payments to Acquire Marketable Securities	(683.7)	0.0	0.0
Maturity of investments	368.2	3.2	0.0
Net cash used in investing activities	(1,150.4)	(325.9)	(250.9)
Cash flows from financing activities:
Payments for obligations recorded for business combinations	0.0	0.0	(76.5)
Excess tax benefit from share-based compensation	0.0	40.8	43.7
Repurchase of common stock - payroll tax withholdings on equity awards	(48.0)	(49.2)	(73.3)
Repurchase of common stock - share repurchase program	(759.5)	(432.3)	(525.6)
Dividends paid	(243.2)	(214.6)	(201.0)
Net proceeds from exercise of stock options	38.8	53.8	28.1
Proceeds from exercise of stock options, employee stock purchase plan	18.2	15.0	18.0
Deferred payments for intangible assets	0.0	(5.5)	0.0
Payment for obligations recorded for business combinations	0.0	(5.4)	0.0
Net cash used in financing activities	(993.7)	(597.4)	(786.6)
Net increase in cash and cash equivalents	(883.5)	533.0	40.2
Cash and cash equivalents at beginning of period	1,616.8		1,083.8
Cash and cash equivalents at end of period	733.3	1,616.8
Supplemental cash flow disclosures:
Income taxes paid	$ 135.9	$ 163.2	$ 165.9