Earnings (Loss) per Share - Schedule of Calculation of Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Calculation of basic earnings (loss) per share:
Net income (loss) applicable to common stock	$ 111.8	$ (114.7)
Weighted-average common shares outstanding - basic (in shares)	152.3	151.9
Basic earnings (loss) per share (in dollars per share)	$ 0.73	$ (0.76)
Calculation of diluted earnings (loss) per share:
Net income (loss) applicable to common stock	$ 111.8	$ (114.7)
Convertible Notes	1.8	0.0
Diluted income (loss) applicable to common stock	$ 113.6	$ (114.7)
Weighted average common shares outstanding - diluted (in shares)	167.0	151.9
Diluted earnings (loss) per share (in dollars per share)	$ 0.68	$ (0.76)
Convertible Notes
Calculation of diluted earnings (loss) per share:
Effective tax rate	21.00%
Common Stock, Non-Exchangeable
Calculation of basic earnings (loss) per share:
Weighted-average common shares outstanding - basic (in shares)	151.9	151.4
Common Stock, Exchangeable
Calculation of basic earnings (loss) per share:
Weighted-average common shares outstanding - basic (in shares)	0.4	0.5