Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
OPERATING ACTIVITIES
Net income	$ 9,518	$ 271
Adjustments to reconcile net income to cash provided by (used in) operating activities:
Provision for credit losses	783	464
Deferred tax benefit	(69)	(61)
Depreciation, amortization, and accretion, net	124	114
Stock based compensation expense	1	12
Realized loss on sale of investment securities available for sale, net	14	0
Fair value adjustment on marketable equity securities, net	9	(3)
Gain on sale of loans, net	(1)	(3)
Gain on sale of operating lease equipment, net	(4)	(6)
Loss on sale of premises and equipment, net	0	1
Gain on other real estate owned, net	0	(2)
Gain on acquisition	(9,824)	(431)
Gain on extinguishment of debt	0	(6)
Origination of loans held for sale	(82)	(235)
Proceeds from sale of loans held for sale	67	248
Net change in other assets	(486)	343
Net change in other liabilities	(347)	(118)
Other operating activities	(65)	(11)
Net cash (used in) provided by operating activities	(362)	577
CASH FLOWS FROM INVESTING ACTIVITIES
Net (increase) decrease in interest-earning deposits at banks	(88)	2,705
Purchases of investment securities available for sale	(125)	(810)
Proceeds from maturities of investment securities available for sale	227	330
Proceeds from sales of investment securities available for sale	1	0
Purchases of investment securities held to maturity	(212)	0
Proceeds from maturities of investment securities held to maturity	117	283
Net decrease in loans	1,060	107
Proceeds from sales of loans	113	53
Net increase (decrease) in credit balances of factoring clients	131	(383)
Purchases of operating lease equipment	(288)	(226)
Proceeds from sales of operating lease equipment	33	19
Purchases of premises and equipment	(44)	(15)
Proceeds from sales of other real estate owned	3	11
Acquisition, net of cash acquired	1,347	134
Other investing activities	353	(13)
Net cash provided by investing activities	2,628	2,195
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase (decrease) in time deposits	2,124	(823)
Net (decrease) increase in demand and other interest-bearing deposits	(7,570)	1,275
Net change in securities sold under customer repurchase agreements	63	27
Repayment of short-term borrowings	(1,750)	0
Proceeds from issuance of short-term borrowings	500	0
Repayment of long-term borrowings	(1,021)	(3,031)
Proceeds from issuance of long-term borrowings	6,500	1
Cash dividends paid	(26)	(14)
Other financing activities	(6)	(22)
Net cash used in financing activities	(1,186)	(2,587)
Change in cash and due from banks	1,080	185
Cash and due from banks at beginning of period	518	338
Cash and due from banks at end of period	1,598	523
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Interest	366	146
Income taxes	0	(1)
Significant non-cash investing and financing activities:
Transfers of loans to other real estate	0	1
Transfers of premises and equipment to other real estate	1	4
Dividends declared but not paid	0	1
Transfer of assets from held for investment to held for sale	115	25
Transfer of assets from held for sale to held for investment	1	12
Loans held for sale exchanged for investment securities	0	38
Commitments extended during the period on affordable housing investment credits	3	0
Purchase Money Note as consideration for SVBB Acquisition	35,150	0
Value Appreciation Instrument as consideration for SVBB Acquisition	500	0
Common Stock | Issued for Acquisition
Issuance of stock	0	5,278
Common Stock | Issued for Stock Based Compensation
Issuance of stock	0	81
Preferred Stock | Issued for Acquisition
Issuance of stock	$ 0	$ 541