Segment Information - Assets and Goodwill (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Feb. 07, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Assets	$ 9,219.4	$ 9,112.8
Goodwill	2,856.2	2,840.1	$ 773.5	$ 770.8
Other intangibles	4,812.0	5,251.4	$ 281.1	$ 284.1
Other long-lived assets	663.2	590.8
Total long-lived assets	8,331.4	8,682.3
North America
Segment Reporting Information [Line Items]
Assets	8,521.9	8,480.1
Goodwill	2,745.5	2,734.6
Other intangibles	4,534.5	4,953.0
Other long-lived assets	568.5	500.9
International
Segment Reporting Information [Line Items]
Assets	697.5	632.7
Goodwill	110.7	105.5
Other intangibles	277.5	298.4
Other long-lived assets	$ 94.7	$ 89.9