Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
OPERATING ACTIVITIES
Net income	$ 526	$ 300
Adjustments to reconcile net income to cash provided by (used in) operating activities:
Provision (benefit) for credit losses	506	(31)
Deferred tax expense	14	13
Depreciation, amortization, and accretion, net	271	67
Stock based compensation expense	14	0
Realized gain on sales of investment securities available for sale, net	0	(25)
Fair value adjustment on marketable equity securities, net	3	(28)
Gain on sales of loans, net	(13)	(20)
Gain on sales of operating lease equipment, net	(4)	0
Gain on sales of premises and equipment, net	(4)	0
Gain on other real estate owned, net	(6)	(2)
Gain on acquisition	(431)	0
Gain on extinguishment of debt	(6)	0
Origination of loans held for sale	(342)	(597)
Proceeds from sales of loans held for sale	386	562
Net change in other assets	371	(773)
Net change in other liabilities	266	(23)
Other operating activities	(308)	(8)
Net cash provided by (used in) operating activities	1,243	(565)
CASH FLOWS FROM INVESTING ACTIVITIES
Net change in loans	(2,616)	102
Purchases of investment securities available for sale	(1,284)	(2,956)
Purchases of investment securities held to maturity	0	(1,012)
Proceeds from maturities of investment securities available for sale	665	1,570
Proceeds from maturities of investment securities held to maturity	526	414
Proceeds from sales of investment securities available for sale	0	1,078
Proceeds from sales of investments in marketable equity securities	0	1
Net decrease (increase) in interest-earning deposits at banks	5,514	(3,524)
Proceeds from sales of other real estate owned	22	21
Proceeds from sales of loans	116	0
Proceeds from sales of premises and equipment	12	1
Proceeds from sales of operating lease equipment	40	0
Purchases of premises and equipment	(39)	(51)
Purchases of operating lease equipment	(339)	0
Acquisition, net of cash acquired	134	0
Other investing activities	(71)	(30)
Net cash provided by (used in) investing activities	2,680	(4,386)
CASH FLOWS FROM FINANCING ACTIVITIES
Net change in time deposits	(1,676)	(267)
Net change in demand and other interest-bearing deposits	(110)	5,247
Net increase in short-term borrowings	57	51
Repayment of long-term borrowings	(3,542)	(24)
Proceeds from issuance of long-term borrowings	1,652	0
Cash dividends paid	(38)	(23)
Other financing activities	(21)	0
Net cash (used in) provided by financing activities	(3,678)	4,984
Change in cash and due from banks	245	33
Cash and due from banks at beginning of period	338	362
Cash and due from banks at end of period	583	395
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Interest	209	32
Income taxes	(2)	867
Significant non-cash investing and financing activities:
Transfers of loans to other real estate	2	5
Transfers of premises and equipment to other real estate	12	7
Dividends declared but not paid	1	0
Transfer of assets from held for investment to held for sale	59	57
Transfer of assets from held for sale to held for investment	25	2
Loans held for sale exchanged for investment securities	38	126
Commitments extended during the period on affordable housing investment credits	20	15
Common Stock | Issued for Acquisition
Issuance of stock	5,279	0
Common Stock | Issued for Stock Based Compensation
Issuance of stock	73	0
Preferred Stock | Issued for Acquisition
Issuance of stock	$ 541	$ 0