Earnings per Share (EPS) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
EPS numerator:
Income (loss) from continuing operations, net of income taxes	$ 347.4	$ (1,859.8)	$ (188.3)
Less: Net income (loss) attributable to noncontrolling interests	11.3	(3.5)	26.2
Income (loss) from continuing operations attributable to common stockholders	336.1	(1,856.3)	(214.5)
Income (loss) from discontinued operations, net of income taxes	24.0	(14.0)	3.2
Net (loss) income attributable to common stockholders, after allocation of earnings to participating securities	$ 360.1	$ (1,870.3)	$ (211.3)
EPS denominator:
Weighted average shares outstanding — basic (in shares)	111.1	97.7	103.7
Impact of dilutive securities (in shares)	0.9	0.0	0.0
Weighted average shares outstanding — diluted (in shares)	112.0	97.7	103.7
Basic EPS attributable to common stockholders:
(Loss) income from continuing operations (in dollars per share)	$ 3.03	$ (18.99)	$ (2.07)
(Loss) income from discontinued operations (in dollars per share)	0.21	(0.15)	0.03
Basic (loss) income per share (in dollars per share)	3.24	(19.14)	(2.04)
Diluted EPS attributable to common stockholders:
(Loss) income from continuing operations (in dollars per share)	3.00	(18.99)	(2.07)
(Loss) income from discontinued operations (in dollars per share)	0.22	(0.15)	0.03
Diluted (loss) income per share (in dollars per share)	$ 3.22	$ (19.14)	$ (2.04)
Earnings per Share (EPS) (Textuals) [Abstract]
Antidilutive shares excluded from EPS calculation	0.1	2.2	1.9