Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Millions	1 Months Ended		12 Months Ended
	Feb. 07, 2019		Dec. 31, 2021	Dec. 31, 2020		Dec. 31, 2019
Current tax provision:
U.S. Federal	$ (11.1)		$ 56.9	$ (29.9)		$ (0.3)
State and local	(3.4)		13.8	7.2		1.6
Non-U.S.	4.8		40.1	28.0		15.7
Total current tax provision	(9.7)		110.8	5.3		17.0
Deferred tax provision:
U.S. Federal	(14.8)		(92.6)	(100.7)		(109.8)
State and local	(3.0)		15.1	(16.9)		(23.5)
Non-U.S.	0.0		(9.9)	(0.1)		(2.0)
Total deferred tax provision	(17.8)		(87.4)	(117.7)		(135.3)
Provision (benefit) for income taxes	$ (27.5)	[1]	$ 23.4	$ (112.4)	[1]	$ (118.3)	[1]

[1] See Note 1 Basis of Presentation and Description of Business for further detail regarding the elimination of the International lag reporting.