Earnings Per Share (Schedule Of Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Oct. 02, 2020	Jun. 26, 2020	Mar. 27, 2020	Dec. 27, 2019	Sep. 27, 2019	Jun. 28, 2019	Mar. 29, 2019	Dec. 28, 2018	Oct. 02, 2020	Sep. 27, 2019	Sep. 28, 2018
Earnings Per Share [Abstract]
Net income	$ 246.9	$ 129.7	$ 181.1	$ 257.1	$ 210.6	$ 144.1	$ 214.0	$ 284.9	$ 814.8	$ 853.6	$ 918.4
Weighted average shares outstanding - basic									168.5	173.5	181.3
Effect of dilutive equity based awards									1.4	1.0	1.9
Weighted average shares outstanding - diluted									169.9	174.5	183.2
Net income per share - basic (in dollars per share)	$ 1.48	$ 0.78	$ 1.07	$ 1.51	$ 1.23	$ 0.83	$ 1.23	$ 1.61	$ 4.84	$ 4.92	$ 5.06
Net income per share - diluted (in dollars per share)	$ 1.46	$ 0.77	$ 1.06	$ 1.50	$ 1.22	$ 0.83	$ 1.23	$ 1.60	$ 4.80	$ 4.89	$ 5.01
Anti-dilutive common stock equivalents									0.1	1.4	0.2