Consolidated Statements Of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 80	$ 411
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	426	25
Depreciation and amortization	63	93
Share-based compensation	18	18
Deferred income tax expense (benefit)	(94)	3
Net decrease (increase) in trading securities	22	(42)
Net increase in loans held for sale	(13)	(39)
Change in other liabilities	33	(73)
Change in other assets	(129)	(166)
Other, net	(8)	(10)
Net cash provided by operating activities	398	220
CASH FLOWS FROM INVESTING ACTIVITIES
Net decrease (increase) in money market investments	(618)	827
Proceeds from maturities and paydowns of investment securities held-to-maturity	73	239
Purchases of investment securities held-to-maturity	(169)	(160)
Proceeds from sales, maturities and paydowns of investment securities available-for-sale	1,795	1,345
Purchases of investment securities available-for-sale	(2,011)	(1,028)
Net change in loans and leases	(6,381)	(1,877)
Net change in other noninterest-bearing investments	59	(5)
Purchases of premises and equipment	(82)	(60)
Other, net	33	4
Net cash used in investing activities	(7,301)	(715)
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in deposits	8,599	232
Net change in short-term funds borrowed	(1,194)	371
Proceeds from the issuance of long-term debt	0	497
Redemption of long-term debt	(429)	0
Proceeds from the issuance of common stock	5	7
Dividends paid on common and preferred stock	(130)	(127)
Bank common stock repurchased	(76)	(551)
Other, net	(7)	(10)
Net cash provided by financing activities	6,768	419
Net decrease in cash and due from banks	(135)	(76)
Cash and due from banks at beginning of period	705	614
Cash and due from banks at end of period	570	538
Cash paid for interest	123	199
Net cash paid for income taxes	17	132
Loans held for investment transferred to other real estate owned	1	6
Loans held for sale reclassified to loans held for investment, net	$ 22	$ 0