PARENT COMPANY FINANCIAL STATEMENTS - Schedule of Condensed Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Assets
Cash and due from banks	$ 814	$ 908
Interest-earning deposits at banks	21,364	33,609
Investment in marketable equity securities	101	84
Other assets	6,740	5,857
Total assets	223,720	213,758
Liabilities
Other liabilities	8,196	7,906
Total liabilities	201,492	192,503
Total stockholders’ equity	22,228	21,255	$ 9,662	$ 4,738
Total liabilities and stockholders’ equity	223,720	213,758
Parent
Assets
Cash and due from banks	310	200
Interest-earning deposits at banks	1	5
Investment in marketable equity securities	99	82
Note receivable from banking subsidiary	200	0
Investment in banking subsidiary	21,932	21,324
Investment in other subsidiaries	97	50
Other assets	75	60
Total assets	22,714	21,721
Liabilities
Subordinated debt	350	367
Borrowings due to banking subsidiary	44	45
Other liabilities	92	54
Total liabilities	486	466
Total stockholders’ equity	22,228	21,255
Total liabilities and stockholders’ equity	$ 22,714	$ 21,721