Intangibles - Schedule of Goodwill (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020
Goodwill [Roll Forward]
Beginning balance	$ 1,008.3
Additions and adjustments	1.3
Disposals	0.0
Impairments	(10.7)
Currency translation	(9.1)
Ending balance	989.7
Accumulated impairments	108.6
U.S.
Goodwill [Roll Forward]
Beginning balance	902.3
Additions and adjustments	1.3
Disposals	0.0
Impairments	0.0
Currency translation	0.0
Ending balance	903.6
U.K.
Goodwill [Roll Forward]
Beginning balance	92.1
Additions and adjustments	0.0
Disposals	0.0
Impairments	0.0
Currency translation	(6.0)
Ending balance	86.1
Brazil
Goodwill [Roll Forward]
Beginning balance	13.9
Additions and adjustments	0.0
Disposals	0.0
Impairments	(10.7)
Currency translation	(3.1)
Ending balance	$ 0.0