Segment Information - Assets and Goodwill (Details) - USD ($) $ in Millions	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Assets	$ 9,860.4		$ 9,220.3	[1]
Goodwill	3,331.1	$ 3,318.2	2,857.9	[1]	$ 2,848.8	$ 2,848.7	$ 2,841.7
Other intangibles	5,047.3	$ 5,157.7	4,814.8	[1]	$ 5,021.2	$ 5,134.4	$ 5,254.5
Other long-lived assets	841.0		659.1
Total long-lived assets	9,219.4		8,331.8
North America
Segment Reporting Information [Line Items]
Assets	8,060.2		8,522.9
Goodwill	2,745.5		2,745.5
Other intangibles	4,339.4		4,534.5
Other long-lived assets	645.4		562.9
International
Segment Reporting Information [Line Items]
Assets	1,800.2		697.4
Goodwill	585.6		112.4
Other intangibles	707.9		280.3
Other long-lived assets	$ 195.6		$ 96.2

[1] See discussion in Note 1 - Basis of Presentation for further detail regarding the elimination of the International lag reporting.