Revenue Recognition (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 27, 2020	Dec. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Deferred Revenue, Current	$ 1,871.2		$ 1,456.5
Deferred Revenue, Noncurrent	6,597.7		6,598.5
Deferred Revenue, Revenue Recognized	44.2	$ 44.2
Nestle Global Coffee Alliance [Member]
Deferred Revenue, Current	180.3
Deferred Revenue, Noncurrent	6,500.0
Revenue Recognition Period Stored Value Cards and Loyalty Program Breakage [Member]
Deferred Revenue, Current	1,623.7	1,460.9
Deferred Revenue, Revenue Recognized	(2,980.2)	(3,061.9)
Deferred Revenue, Additions	3,437.4	3,507.5
Deferred Revenue, Other	12.3	1.7
Deferred Revenue	$ 1,750.0	$ 1,561.0	$ 1,280.5	$ 1,113.7