EARNINGS PER COMMON SHARE COMPUTATION (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income available for common stockholders	$ 195	$ 480	$ 1,984	$ 1,900
Weighted average outstanding shares of common stock used to compute basic earnings per common share (in shares)	120,273	120,405	120,492	120,609
Shares used to compute diluted earnings per common share (in shares)	120,745	120,764	120,778	120,899
Basic earnings per common share (in dollars per share)	$ 1.62	$ 3.99	$ 16.47	$ 15.76
Diluted earnings per common share (in dollars per share)	$ 1.62	$ 3.98	$ 16.43	$ 15.72
Number of antidilutive stock options and restricted stock excluded from computation (in shares)	450	361	1,016	759
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)	0	3	0	4
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)	472	356	286	286