EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Earnings Per Share [Abstract]
Income from continuing operations before attribution of noncontrolling interests		$ 9,382	$ 15,165	$ 22,018
Net Income (Loss) Attributable to Noncontrolling Interest		153	89	73
Net income from continuing operations (for EPS purposes)		9,229	15,076	21,945
Loss from discontinued operations, net of taxes		(1)	(231)	7
Net income		9,228	14,845	21,952
Less: Preferred dividends		1,198	1,032	1,040
Net income available to common shareholders		8,030	13,813	20,912
Less: Dividends and undistributed earnings allocated to employee restricted and deferred shares with rights to dividends, and other relevant items, applicable to basic EPS		180	113	154
Net income allocated to common shareholders for basic EPS		$ 7,850	$ 13,700	$ 20,758
Weighted-average common shares outstanding applicable to basic EPS (in shares)		1,930.1	1,946.7	2,033.0
Basic earnings per share
Income from continuing operations (in dollars per share)	[1]	$ 4.07	$ 7.16	$ 10.21
Discontinued operations (in dollars per share)	[1]	0	(0.12)	0
Net income (in dollars per share)	[1]	$ 4.07	$ 7.04	$ 10.21
Add back: Dividends allocated to employee restricted and deferred shares with rights to dividends that are forfeitable		$ 57	$ 41	$ 31
Net income allocated to common shareholders for diluted EPS		$ 7,907	$ 13,741	$ 20,789
Effect of dilutive securities
Other employee plans (in shares)		25.7	17.6	16.4
Adjusted weighted-average common shares outstanding applicable to diluted EPS (in shares)		1,955.8	1,964.3	2,049.4
Diluted earnings per share
Income from continuing operations (in dollars per share)	[1]	$ 4.04	$ 7.11	$ 10.14
Discontinued operations (in dollars per share)	[1]	0	(0.12)	0
Net income (in dollars per share)	[1]	$ 4.04	$ 7.00	$ 10.14
Antidilutive Securities Excluded from Computation of Earnings Per Share
Excise taxes		$ 14
Series A Preferred Stock and Series B Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share
Stock issuance costs		$ 58
Weighted-average options to purchase common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive securities excluded from computation of earnings per common share (in shares)		0.0	0.0	0.0

[1] Due to rounding, earnings per share on continuing operations and discontinued operations may not sum to earnings per share on net income.