STOCKHOLDERS' EQUITY - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	12 Months Ended
	May 23, 2024	May 31, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Class of Stock [Line Items]
Preferred stock, issued			$ 2,113	$ 2,014
Preferred stock, issued (in shares)			2,150,000	2,050,000
Preferred stock, par value (in dollars per share)			$ 25.00	$ 25.00
Cost of stock repurchase			$ 1,050	$ 906	$ 153
Treasury stock purchased (in shares)			28,113,278	28,473,805
Series H
Class of Stock [Line Items]
Preferred stock, issued	$ 400		$ 392	$ 0
Preferred stock, issued (in shares)	400,000		400,000	0
Preferred stock, dividend rate	7.375%	9.205%
Preferred stock, par value (in dollars per share)	$ 25.00
Preferred stock, liquidation preference (in dollars per share)	$ 1,000		$ 1,000
Proceeds from issuance of preferred stock	$ 392
Redemption option regulatory capital treatment event window	90 days