Intangible Assets, Goodwill and Other (Changes in Carrying Amount of Goodwill by Reportable Operating Segment) (Details) - USD ($) $ in Millions	9 Months Ended
	Jun. 28, 2020	Jun. 30, 2019
Goodwill [Line Items]
Goodwill, beginning balance	$ 3,490.8
Impairment	0.0	$ 10.5
Other	19.3
Goodwill, ending balance	3,510.1
Americas Segment [Member]
Goodwill [Line Items]
Goodwill, beginning balance	496.7
Other	(0.8)
Goodwill, ending balance	495.9
International Segment
Goodwill [Line Items]
Goodwill, beginning balance	2,958.4
Other	20.1
Goodwill, ending balance	2,978.5
Channel Development [Member]
Goodwill [Line Items]
Goodwill, beginning balance	34.7
Other	0.0
Goodwill, ending balance	34.7
Corporate and Other [Member]
Goodwill [Line Items]
Goodwill, beginning balance	1.0
Other	0.0
Goodwill, ending balance	$ 1.0