Earnings Per Share (Schedule Of Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended						9 Months Ended
	Jun. 26, 2020	Mar. 27, 2020	Dec. 27, 2019	Jun. 28, 2019	Mar. 29, 2019	Dec. 28, 2018	Jun. 26, 2020	Jun. 28, 2019
Earnings Per Share [Abstract]
Net income	$ 129.7	$ 181.1	$ 257.1	$ 144.1	$ 214.0	$ 284.9	$ 567.9	$ 643.0
Weighted average shares outstanding - basic (shares)	167.0			172.6			169.1	174.3
Dilutive effect of equity based awards (shares)	1.3			0.8			1.2	0.9
Weighted average shares outstanding - diluted (shares)	168.3			173.4			170.3	175.2
Net income per share - basic (usd per share)	$ 0.78			$ 0.83			$ 3.36	$ 3.69
Net income per share - diluted (usd per share)	$ 0.77			$ 0.83			$ 3.33	$ 3.67
Anti-dilutive common stock equivalents (shares)	0.0			1.0			0.2	1.5