Summary of Significant Accounting Policies - Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Earnings Per Share [Abstract]
Net (loss) income available to common stockholders	$ (112)	$ 617	$ 563
Less: Dividends paid on and earnings allocated to participating securities	(5)	(8)	(7)
(Loss) earnings applicable to common stock	$ (117)	$ 609	$ 556
Weighted average common shares outstanding (in shares)	713,643,550	483,603,395	463,865,661
Basic (loss) earnings per common share (in usd per share)	$ (0.16)	$ 1.26	$ 1.20
Potential dilutive common shares	0	1,530,950	767,058
Total shares for diluted earnings per common share compensation (in shares)	713,643,550	485,134,345	464,632,719
Diluted (loss) earnings per common share and common share equivalents (in usd per share)	$ (0.16)	$ 1.26	$ 1.20