Earnings Per Share (Schedule Of Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Dec. 28, 2018	Dec. 29, 2017
Earnings Per Share [Abstract]
Net income	$ 284.9	$ 70.4
Weighted average shares outstanding - basic (shares)	176.6	183.1
Dilutive effect of equity based awards (shares)	1.1	2.4
Weighted average shares outstanding - diluted (shares)	177.7	185.5
Net income per share - basic (usd per share)	$ 1.61	$ 0.38
Net income per share - diluted (usd per share)	$ 1.60	$ 0.38
Anti-dilutive common stock equivalents (shares)	1.7	0.4