Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 483	$ 731
Adjustments to reconcile net income to cash provided by operating activities:
Provision for credit losses	154	64
Deferred tax (benefit) expense	(40)	1
Depreciation, amortization, and accretion, net	93	(12)
Fair value adjustment on marketable equity securities, net	5	4
Gain on sale of loans, net	(2)	(3)
Gain on sale of operating lease equipment, net	(5)	(10)
Gain on sale of premises and equipment, net	(1)	0
Loss (gain) on other real estate owned, net	8	(3)
Loss on extinguishment of debt	0	2
Origination of loans held for sale	(297)	(209)
Proceeds from sale of loans held for sale	293	244
Impairment of premises and equipment	4	0
Net change in other assets	24	57
Net change in other liabilities	(610)	(409)
Other operating activities	(11)	4
Net cash provided by operating activities	98	461
CASH FLOWS FROM INVESTING ACTIVITIES
Net (increase) decrease in interest-earning deposits at banks	(3,328)	2,817
Purchases of investment securities available for sale	(1,855)	(6,296)
Proceeds from maturities of investment securities available for sale	894	1,221
Proceeds from sales of investment securities available for sale	1,196	250
Purchases of investment securities held to maturity	(217)	(174)
Proceeds from maturities of investment securities held to maturity	139	109
Net (increase) decrease in securities purchased under agreements to resell	(187)	79
Net increase in loans	(1,368)	(2,146)
Proceeds from sales of loans	41	74
Net increase in credit balances of factoring clients	129	63
Purchases of operating lease equipment	(170)	(191)
Proceeds from sales of operating lease equipment	63	66
Purchases of premises and equipment	(103)	(94)
Proceeds from sales of other real estate owned	3	7
Other investing activities	(114)	(76)
Net cash used in investing activities	(4,877)	(4,291)
CASH FLOWS FROM FINANCING ACTIVITIES
Net (decrease) increase in time deposits	(1,257)	585
Net increase in demand and other interest-bearing deposits	5,370	3,204
Net increase (decrease) in securities sold under agreements to repurchase	83	(90)
Repayment of long-term borrowings	(1)	(31)
Proceeds from issuance of long-term borrowings	1,242	0
Repurchase of Class A common stock	(618)	0
Cash dividends paid	(42)	(39)
Other financing activities	0	(9)
Net cash provided by financing activities	4,777	3,620
Change in cash and due from banks	(2)	(210)
Cash and due from banks at beginning of period	814	908
Cash and due from banks at end of period	812	698
Cash paid during the period for:
Interest	1,224	1,294
Income taxes	40	53
Significant non-cash investing and financing activities:
Transfers of loans to other real estate	52	0
Transfer of assets from held for investment to held for sale	139	131
Commitments extended during the period on affordable housing investment credits	$ 108	$ 120