Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating Activities
Net income	$ 286	$ 387	$ 373
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation, amortization and accretion	(3)	45	109
Provision for credit losses	123	44	61
Deferred tax expense (benefit)	(18)	33	33
Loans originated for sale	(1,886)	(1,481)	(1,117)
Loans sold	1,830	1,495	1,210
Net gain on sale of loans	(47)	(25)	(22)
Net change in:
Interest receivable	19	(8)	(6)
Interest payable	(8)	1	7
Bank owned life insurance, excluding purchases	(6)	(7)	(10)
Other, net	(177)	(225)	(27)
Net cash flows provided by operating activities	113	259	611
Investing Activities
Net change in loans and leases, excluding sales and transfers	(2,604)	(1,427)	(1,394)
Debt securities available for sale:
Purchases	(2,360)	(655)	(1,200)
Maturities/payments	2,244	770	592
Debt securities held to maturity:
Purchases	(301)	(494)	(387)
Maturities/payments	703	468	370
Increase in premises and equipment	(41)	(46)	(35)
Net cash received in business combinations and divestitures	0	0	134
Loans sold, not originated for sale	537	262	0
Other, net	0	(9)	0
Net cash flows used in investing activities	(1,822)	(1,131)	(1,920)
Financing Activities
Demand (non-interest-bearing and interest-bearing) and savings accounts	5,402	1,873	406
Time deposits	(1,065)	(539)	653
Short-term borrowings	(1,412)	(913)	450
Proceeds from issuance of long-term borrowings	328	954	37
Repayment of long-term borrowings	(574)	(239)	(77)
Repurchases of common stock	(38)	0	0
Cash dividends paid:
Preferred stock	(8)	(8)	(8)
Common stock	(157)	(157)	(157)
Other, net	17	12	14
Net cash flows provided by financing activities	2,493	983	1,318
Net Increase in Cash and Cash Equivalents	784	111	9
Cash and cash equivalents at beginning of year	599	488	479
Cash and Cash Equivalents at End of Year	$ 1,383	$ 599	$ 488