EARNINGS PER COMMON SHARE COMPUTATION (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income available for common stockholders	$ 1,193	$ 1,531	$ 2,820	$ 2,947
Weighted average outstanding shares of common stock used to compute basic earnings per common share (in shares)	126,572	128,518	126,678	128,714
Shares used to compute diluted earnings per common share (in shares)	127,356	129,255	127,305	129,398
Basic earnings per common share (in dollars per share)	$ 9.45	$ 11.91	$ 22.27	$ 22.90
Diluted earnings per common share (in dollars per share)	$ 9.39	$ 11.84	$ 22.16	$ 22.77
Number of antidilutive stock options and restricted stock excluded from computation (in shares)	78	136	267	256
Employee stock options
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Dilutive effect of employee stock options and restricted stock (in shares)	61	68	50	65
Restricted stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Dilutive effect of employee stock options and restricted stock (in shares)	723	669	577	619