Goodwill and Intangibles, net - Definite Lived Intangible Assets (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 139.3	$ 80.1
Negative amortization	(24.8)	(21.0)
Net	$ 114.5	59.1
Trade names
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Original Useful Life	14 years
Gross Carrying Amount	$ 25.4	18.0
Negative amortization	(5.4)	(4.6)
Net	$ 20.0	13.4
Customer relationships and contracts
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Original Useful Life	11 years
Gross Carrying Amount	$ 85.4	36.4
Negative amortization	(14.5)	(12.1)
Net	$ 70.9	24.3
Channel sharing arrangements
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Original Useful Life	35 years
Gross Carrying Amount	$ 20.1	20.2
Negative amortization	(1.9)	(1.6)
Net	$ 18.2	18.6
Other
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Original Useful Life	8 years
Gross Carrying Amount	$ 8.4	5.5
Negative amortization	(3.0)	(2.7)
Net	$ 5.4	$ 2.8