STOCKHOLDERS' EQUITY - BASIC AND DILUTED EPS (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
PER COMMON SHARE
Income from continuing operations	$ 4,696	$ 13,304	$ 2,790
Loss from discontinued operations	0	0	(468)
NET INCOME	4,696	13,304	2,322
Less: Preferred stock dividends	(923)	(800)	(800)
NET INCOME ATTRIBUTABLE TO COMMON STOCKHOLDERS	3,773	12,504	1,522
Less: Net income allocated to participating securities	(23)	(83)	(10)
Net income, net of participating securities	$ 3,750	$ 12,421	$ 1,512
Weighted-average number of basic shares (in shares)	889.2	926.2	935.0
Basic earnings per common share (in dollars per share)	$ 4.22	$ 13.41	$ 1.62
Less: Net income allocated to participating securities	$ (21)	$ (77)	$ (10)
Net income, net of participating securities	$ 3,752	$ 12,427	$ 1,512
Dilutive securities (in shares)	71.7	75.8	23.8
Total diluted weighted- average common shares (in shares)	960.9	1,002.0	958.8
Diluted earnings per common share (in dollars per share)	$ 3.90	$ 12.40	$ 1.58
Antidilutive securities excluded from computation of earnings per share (in shares)	0.0	0.0	87.0