Earnings Per Common Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Net income	$ 752	$ 315	$ 10,952	$ 841
Preferred stock dividends	15	12	44	36
Net income available to common stockholders, basic	737	303	10,908	805
Net income available to common shareholders, diluted	$ 737	$ 303	$ 10,908	$ 805
Weighted average common shares outstanding
Basic shares outstanding (in shares)	14,528,310	15,711,976	14,527,718	15,849,219
Stock-based award (in shares)	10,823	16,017	11,665	18,095
Diluted shares outstanding (in shares)	14,539,133	15,727,993	14,539,383	15,867,314
Earnings per common share, basic (in dollars per share)	$ 50.71	$ 19.27	$ 750.79	$ 50.76
Earnings per common share, diluted (in dollars per share)	$ 50.67	$ 19.25	$ 750.19	$ 50.70