PARENT COMPANY FINANCIAL STATEMENTS - Schedule of Condensed Statements of Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income
Total income	$ 9,758	$ 18,787	$ 5,082
Expenses
Other expenses	460	377	240
Income tax (benefit) expense	815	611	264
Net income	2,777	11,466	1,098
Preferred stock dividends	61	59	50
Net income available to common stockholders, basic	2,716	11,407	1,048
Net income available to common shareholders, diluted	2,716	11,407	1,048
Parent
Income
Dividends from banking subsidiary	2,221	367	1,410
Other income (loss)	25	(8)	(2)
Total income	2,246	359	1,408
Expenses
Interest expense	16	22	19
Other expenses	61	40	26
Total expenses	77	62	45
Income before income taxes and equity in undistributed net income of subsidiaries	2,169	297	1,363
Income tax (benefit) expense	(22)	(14)	44
Income before equity in undistributed net income of subsidiaries	2,191	311	1,319
Equity in undistributed (distributed) net income of subsidiaries	586	11,155	(221)
Net income	2,777	11,466	1,098
Preferred stock dividends	61	59	50
Net income available to common stockholders, basic	2,716	11,407	1,048
Net income available to common shareholders, diluted	$ 2,716	$ 11,407	$ 1,048