Earnings Per Common Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Abstract]
Net income	$ 271	$ 147
Preferred stock dividends	7	4
Net income available to common stockholders, basic	264	143
Net income available to common shareholders, diluted	$ 264	$ 143
Weighted average common shares outstanding, basic (in shares)	15,779,153	9,816,405
Stock-based award (in shares)	0	0
Weighted average common shares outstanding, diluted (in shares)	15,779,153	9,816,405
Earnings per common share, basic (in dollars per share)	$ 16.70	$ 14.53
Earnings per common share, diluted (in dollars per share)	$ 16.70	$ 14.53