Stockholder's Equity (Share Repurchase) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended						9 Months Ended
	Jan. 30, 2019	Jun. 26, 2020	Mar. 27, 2020	Dec. 27, 2019	Jun. 28, 2019	Mar. 29, 2019	Dec. 28, 2018	Jun. 26, 2020
Equity, Class of Treasury Stock [Line Items]
Share repurchase authorized date	Jan. 30, 2019
Authorized amount of stock for repurchase	$ 2,000.0
Stock repurchase program expiration date	Jan. 30, 2021
Stock repurchased		$ 58.5	$ 283.8	$ 74.2	$ 85.8	$ 141.5	$ 284.0	$ 416.5
Treasury Stock, Shares, Acquired		0.7						4.6
Average price of stock repurchased (in dollars per share)		$ 87.42						$ 89.56
Remaining amount authorized fro stock repurchase		$ 1,200.0						$ 1,200.0