Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions		Total	Net effect of adoption of new accounting standard	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Deficit	Retained Deficit Net effect of adoption of new accounting standard	Non-Controlling Interests— Non-Redeemable
Beginning Balance, stockholders' equity (shares) at Dec. 31, 2018				48,869,000
Beginning Balance, stockholders' equity at Dec. 31, 2018		$ 1,098.9	$ 18.0	$ 0.5	$ 673.5	$ (22.4)	$ (247.0)	$ 18.0	$ 694.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income		(4.1)					(20.1)		16.0
Equity-based compensation (shares)				517,000
Equity-based compensation		0.9			0.9
Preferred dividends		(8.5)			(8.5)
Other comprehensive loss		(11.5)				(11.5)
Acquisition and disposal of shares of non-controlling interests, net	[1]	14.1			8.0				6.1
Distributions to non-controlling interests—non-redeemable holders		(23.5)							(23.5)
Ending Balance, stockholders' equity (shares) at Mar. 31, 2019				49,386,000
Ending Balance, stockholders' equity at Mar. 31, 2019		$ 1,084.3		$ 0.5	673.9	(33.9)	(249.1)		692.9
Beginning Balance, stockholders' equity (shares) at Dec. 31, 2019		49,298,940		49,299,000
Beginning Balance, stockholders' equity at Dec. 31, 2019		$ 983.4		$ 0.5	662.7	(50.7)	(315.7)		686.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income		(13.9)					(27.5)		13.6
Equity-based compensation (shares)				1,219,000
Equity-based compensation		2.8			2.8
Preferred dividends		(9.5)			(9.5)
Other comprehensive loss		(25.2)				(25.2)
Acquisition and disposal of shares of non-controlling interests, net	[1]	0.7			(0.7)				1.4
Distributions to non-controlling interests—non-redeemable holders		$ (14.9)							(14.9)
Ending Balance, stockholders' equity (shares) at Mar. 31, 2020		50,518,377		50,518,000
Ending Balance, stockholders' equity at Mar. 31, 2020		$ 923.4		$ 0.5	$ 655.3	$ (75.9)	$ (343.2)		$ 686.7

[1] Includes post acquisition date adjustments.