Goodwill - Schedule of Goodwill and Changes to Carrying Value (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Aug. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Roll Forward]
Balance at the beginning of the period		$ 431.3	$ 432.9
Foreign currency translation		0.1	(0.7)
Disposals			(0.9)
Balance at the end of the period		431.4	431.3
Region One
Goodwill [Roll Forward]
Balance at the beginning of the period		337.5	339.1
Foreign currency translation		0.1	(0.7)
Disposals			(0.9)
Balance at the end of the period		337.6	337.5
Region Two
Goodwill [Roll Forward]
Balance at the beginning of the period		62.7	62.7
Foreign currency translation		0.0	0.0
Disposals	$ (0.9)		0.0
Balance at the end of the period		62.7	62.7
Region Three
Goodwill [Roll Forward]
Balance at the beginning of the period		31.1	31.1
Foreign currency translation		0.0	0.0
Disposals			0.0
Balance at the end of the period		$ 31.1	$ 31.1