Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019		Dec. 31, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	[1]	$ (704.8)	$ (540.3)		$ (129.6)
Ending balance		512.1	(704.8)	[1]	(540.3)	[1]
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		32.9	43.2		133.8
Other comprehensive income (loss)		72.0	(10.3)		(90.6)
Ending balance		104.9	32.9		43.2
Interest Rate Swap
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		0.0	0.0		0.0
Other comprehensive income (loss)		(32.8)	0.0		0.0
Ending balance		(32.8)	0.0		0.0
Pension
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		(14.8)	(1.4)		(0.3)
Other comprehensive income (loss)		(4.9)	(13.4)		(1.1)
Ending balance		(19.7)	(14.8)		(1.4)
Tax Receivable Agreement
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		0.0	0.0		0.0
Other comprehensive income (loss)		(0.9)	0.0		0.0
Ending balance		(0.9)	0.0		0.0
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	[1]	18.1	41.8		133.5
Ending balance		$ 51.5	$ 18.1	[1]	$ 41.8	[1]

[1] As a result of the restatement the merger recapitalization has been reduced by the fair value of $116.4 of Warrants as a liability as of February 7, 2020.