Goodwill and Intangibles, net - Definite Lived Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 115.9	$ 111.4
Accumulated Amortization	(27.6)	(15.3)
Net	$ 88.3	96.1
Trade names
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Original Useful Life	13 years
Gross Carrying Amount	$ 26.0	25.9
Accumulated Amortization	(7.9)	(5.9)
Net	$ 18.1	20.0
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Original Useful Life	10 years
Gross Carrying Amount	$ 56.0	53.6
Accumulated Amortization	(15.7)	(7.2)
Net	$ 40.3	46.4
Channel sharing arrangements
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Original Useful Life	40 years
Gross Carrying Amount	$ 27.2	25.2
Accumulated Amortization	(0.9)	0.0
Net	$ 26.3	25.2
Developed technology
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Original Useful Life	4 years
Gross Carrying Amount	$ 1.2	1.2
Accumulated Amortization	(1.2)	(1.2)
Net	$ 0.0	0.0
Other
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Original Useful Life	7 years
Gross Carrying Amount	$ 5.5	5.5
Accumulated Amortization	(1.9)	(1.0)
Net	$ 3.6	$ 4.5