Earnings Per Share (Schedule Of Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Mar. 30, 2018	Mar. 31, 2017	Mar. 30, 2018	Mar. 31, 2017
Earnings Per Share [Abstract]
Net income	$ 276.0	$ 224.9	$ 346.4	$ 482.7
Weighted average shares outstanding - basic (shares)	182.5	184.8	182.8	184.8
Dilutive effect of equity based awards (shares)	1.8	2.3	2.1	2.4
Weighted average shares outstanding - diluted (shares)	184.3	187.1	184.9	187.2
Net income per share - basic (usd per share)	$ 1.51	$ 1.22	$ 1.89	$ 2.61
Net income per share - diluted (usd per share)	$ 1.50	$ 1.20	$ 1.87	$ 2.58
Anti-dilutive common stock equivalents (shares)	0.1	1.0	0.2	1.2