Intangible Assets, Goodwill and Other (Changes in Carrying Amount of Goodwill by Reportable Operating Segment) (Details) $ in Millions	3 Months Ended
	Dec. 31, 2023 USD ($)
Goodwill [Line Items]
Goodwill, beginning balance	$ 3,218.3
Other	84.5	[1]
Goodwill, ending balance	3,302.8
North America [Member]
Goodwill [Line Items]
Goodwill, beginning balance	491.5
Other	0.5	[1]
Goodwill, ending balance	492.0
International [Member]
Goodwill [Line Items]
Goodwill, beginning balance	2,691.1
Other	84.0	[1]
Goodwill, ending balance	2,775.1
Channel Development [Member]
Goodwill [Line Items]
Goodwill, beginning balance	34.7
Other	0.0	[1]
Goodwill, ending balance	34.7
Corporate and Other [Member]
Goodwill [Line Items]
Goodwill, beginning balance	1.0
Other	0.0	[1]
Goodwill, ending balance	$ 1.0

[1] “Other” consists of changes in the goodwill balance resulting from foreign currency translation.