Earnings Per Share (Schedule Of Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Dec. 27, 2019	Dec. 28, 2018
Earnings Per Share [Abstract]
Net income	$ 257.1	$ 284.9
Weighted average shares outstanding - basic (shares)	170.2	176.6
Dilutive effect of equity based awards (shares)	1.4	1.1
Weighted average shares outstanding - diluted (shares)	171.6	177.7
Net income per share - basic (usd per share)	$ 1.51	$ 1.61
Net income per share - diluted (usd per share)	$ 1.50	$ 1.60
Anti-dilutive common stock equivalents (shares)	0.5	1.7