Earnings Per Common Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share [Abstract]
Net income	$ 682	$ 255	$ 10,200	$ 526
Preferred stock dividends	15	17	29	24
Net income available to common stockholders, basic	667	238	10,171	502
Net income available to common shareholders, diluted	$ 667	$ 238	$ 10,171	$ 502
Weighted average common shares outstanding
Weighted average common shares outstanding, basic (in shares)	14,528,134	16,023,613	14,527,417	15,918,978
Stock-based award (in shares)	9,804	11,477	11,759	18,848
Weighted average common shares outstanding, diluted (in shares)	14,537,938	16,035,090	14,539,176	15,937,826
Earnings per common share, basic (in dollars per share)	$ 45.90	$ 14.87	$ 700.10	$ 31.52
Earnings per common share, diluted (in dollars per share)	$ 45.87	$ 14.86	$ 699.53	$ 31.48