CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive (Loss) Income	Retained Deficit	Non-Controlling Interests— Non-Redeemable
Beginning Balance (shares) at Dec. 31, 2022		125,961,000
Beginning Balance at Dec. 31, 2022	$ 2,940.9	$ 1.3	$ 2,478.0	$ 76.2	$ (557.3)	$ 942.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(6.7)				(25.0)	18.3
Equity-based compensation (shares)		519,000
Equity-based compensation	3.7		3.7
Other comprehensive income (loss)	(11.3)			(11.3)
Acquisition and disposal of shares of non-controlling interests, net	46.1		(3.6)			49.7
Distributions to non-controlling interests—non-redeemable holders	(30.2)					(30.2)
Ending Balance (shares) at Mar. 31, 2023		126,480,000
Ending Balance at Mar. 31, 2023	2,942.5	$ 1.3	2,478.1	64.9	(582.3)	980.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	46.6				19.0	27.6
Equity-based compensation (shares)		13,000
Equity-based compensation	4.5		4.5
Other comprehensive income (loss)	13.9			13.9
Acquisition and disposal of shares of non-controlling interests, net	(0.9)		18.8			(19.7)
Distributions to non-controlling interests—non-redeemable holders	(23.8)					(23.8)
Ending Balance (shares) at Jun. 30, 2023		126,493,000
Ending Balance at Jun. 30, 2023	$ 2,982.8	$ 1.3	2,501.4	78.8	(563.3)	964.6
Beginning Balance (shares) at Dec. 31, 2023	126,593,727	126,594,000
Beginning Balance at Dec. 31, 2023	$ 3,034.5	$ 1.3	2,497.6	57.5	(569.2)	1,047.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	16.9				(12.4)	29.3
Equity-based compensation (shares)		508,000
Equity-based compensation	4.9		4.9
Other comprehensive income (loss)	(5.5)			(5.5)
Acquisition and disposal of shares of non-controlling interests, net	16.8		(6.9)			23.7
Distributions to non-controlling interests—non-redeemable holders	(29.7)					(29.7)
Ending Balance (shares) at Mar. 31, 2024		127,102,000
Ending Balance at Mar. 31, 2024	3,037.9	$ 1.3	2,495.6	52.0	(581.6)	1,070.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	20.0				(15.5)	35.5
Equity-based compensation (shares)		22,000
Equity-based compensation	15.1		15.1
Other comprehensive income (loss)	(14.9)			(14.9)
Acquisition and disposal of shares of non-controlling interests, net	147.8		0.4			147.4
Distributions to non-controlling interests—non-redeemable holders	$ (29.6)					(29.6)
Ending Balance (shares) at Jun. 30, 2024	127,123,940	127,124,000
Ending Balance at Jun. 30, 2024	$ 3,176.3	$ 1.3	$ 2,511.1	$ 37.1	$ (597.1)	$ 1,223.9