Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Jun. 30, 2019	Oct. 03, 2021	Jun. 30, 2019	Oct. 03, 2021	Sep. 27, 2020	Sep. 29, 2019	Mar. 18, 2020	Jun. 18, 2019	Mar. 31, 2019	Mar. 23, 2019	Nov. 01, 2018
Accelerated Share Repurchases [Line Items]
Stock Repurchased During Period, Shares						139,600,000
Stock Repurchased During Period, Value						$ 10,100.0
Authorized shares of common stock		2,400,000,000		2,400,000,000	2,400,000,000
Common stock, par value		$ 0.001		$ 0.001	$ 0.001
Authorized shares of preferred stock		7,500,000		7,500,000
Outstanding shares of preferred stock		0		0
Stock Repurchased During Period, Shares						139,600,000
Stock Repurchased During Period, Value						$ 10,100.0
Shares available for repurchase					48,900,000
Common Stock, Dividends, Per Share, Declared		$ 0.49		$ 2.29	$ 1.23	$ 1.49
MarchASR [Member]
Accelerated Share Repurchases [Line Items]
Accelerated Share Repurchase, Completion Date	June 2019
Other Commitment									$ 2,000.0
Up-Front Payment Under Accelerated Share Repurchase Program										$ 2,000.0
Accelerated Share Repurchases, Settlement (Payment) or Receipt, Shares								3,900,000		22,200,000
Accelerated Share Repurchases, Final Price Paid Per Share			$ 76.50
Open Market [Member]
Accelerated Share Repurchases [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased							40,000,000				120,000,000
Stock Repurchased During Period, Shares					20,300,000	36,600,000
Stock Repurchased During Period, Value					$ 1,700.0	$ 3,100.0
Stock Repurchased During Period, Shares					20,300,000	36,600,000
Stock Repurchased During Period, Value					$ 1,700.0	$ 3,100.0