Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	[1]	$ 190.7		$ 190.0
Finite-Lived Intangible Assets, Accumulated Amortization		(25.5)		(21.9)
Amortization of Intangible Assets		3.6	$ 2.6
Impairment of Intangible Assets, Finite-lived		0.0	$ 0.0
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
Nine months ended December 31, 2019		11.0
2020		14.4
2021		14.1
2022		13.9
2023		13.5
Thereafter		98.3
Total		165.2		168.1
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	[1]	140.0		139.4
Finite-Lived Intangible Assets, Accumulated Amortization		(20.5)		(17.8)
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
Total		$ 119.5		121.6
Customer Relationships [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life		8 years
Customer Relationships [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life		15 years
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	[1]	$ 40.9		40.7
Finite-Lived Intangible Assets, Accumulated Amortization		(3.5)		(2.8)
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
Total		$ 37.4		37.9
Trade Names [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life		10 years
Trade Names [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life		15 years
Technology-Based Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	[1]	$ 9.8		9.9
Finite-Lived Intangible Assets, Accumulated Amortization		$ (1.5)		(1.3)
Finite-Lived Intangible Asset, Useful Life		10 years
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
Total		$ 8.3		$ 8.6

[1] Change in gross carrying amounts is due to foreign currency translation on certain intangible assets