EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share [Abstract]
Net income	$ 707	$ 682	$ 1,438	$ 10,200
Preferred stock dividends	16	15	31	29
Net income available to common stockholders, basic	691	667	1,407	10,171
Net income available to common shareholders, diluted	$ 691	$ 667	$ 1,407	$ 10,171
Weighted average common shares outstanding
Basic shares outstanding (in shares)	14,534,499	14,528,134	14,533,900	14,527,417
Stock-based award (in shares)	0	9,804	1,572	11,759
Diluted shares outstanding (in shares)	14,534,499	14,537,938	14,535,472	14,539,176
Earnings per common share, basic (in dollars per share)	$ 47.54	$ 45.90	$ 96.81	$ 700.10
Earnings per common share, diluted (in dollars per share)	$ 47.54	$ 45.87	$ 96.80	$ 699.53