Earnings Per Share (Schedule Of Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended																12 Months Ended
	Sep. 27, 2019		Jun. 28, 2019		Mar. 29, 2019		Dec. 28, 2018		Sep. 28, 2018		Jun. 29, 2018		Mar. 30, 2018		Dec. 29, 2017		Sep. 27, 2019		Sep. 28, 2018		Sep. 29, 2017
Earnings Per Share [Abstract]
Net income	$ 210.6		$ 144.1		$ 214.0		$ 284.9		$ 285.5		$ 286.5		$ 276.0		$ 70.4		$ 853.6		$ 918.4		$ 1,010.2
Weighted average shares outstanding - basic																	173.5		181.3		184.3
Effect of dilutive equity based awards																	1.0		1.9		2.4
Weighted average shares outstanding - diluted																	174.5		183.2		186.7
Net income per share - basic (in dollars per share)	$ 1.23	[1]	$ 0.83	[1]	$ 1.23	[1]	$ 1.61	[1]	$ 1.60	[1]	$ 1.58	[1]	$ 1.51	[1]	$ 0.38	[1]	$ 4.92	[1]	$ 5.06	[1]	$ 5.48
Net income per share - diluted (in dollars per share)	$ 1.22	[1]	$ 0.83	[1]	$ 1.23	[1]	$ 1.60	[1]	$ 1.58	[1]	$ 1.57	[1]	$ 1.50	[1]	$ 0.38	[1]	$ 4.89	[1]	$ 5.01	[1]	$ 5.41
Anti-dilutive common stock equivalents																	1.4		0.2		0.6

[1] Earnings per share calculations for each of the quarters are based on the weighted average number of shares outstanding and included common stock equivalents in each period. Therefore, the sums of the quarters do not necessarily equal the full year earnings per share.