Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
INTEREST INCOME
Interest and fees on loans		$ 434	$ 635	$ 951	$ 1,256
Interest on investment securities		74	75	148	147
Interest on short-term investments		3	17	21	34
Total interest income		511	727	1,120	1,437
INTEREST EXPENSE
Interest on deposits		20	67	76	119
Interest on short-term borrowings		1	6	1	7
Interest on medium- and long-term debt	[1]	19	51	59	102
Total interest expense		40	124	136	228
Net interest income		471	603	984	1,209
Provision for credit losses		138	44	549	31
Net interest income after provision for credit losses		333	559	435	1,178
NONINTEREST INCOME
Card Fees		68	65	127	128
Fiduciary income		52	52	106	101
Service charges on deposit accounts		42	51	91	102
Commercial lending fees		17	21	34	43
Foreign exchange income		9	11	20	22
Bank-owned life insurance		9	11	21	20
Letter of credit fees		9	10	18	19
Brokerage fees		5	7	12	14
Net securities losses		1	0	0	(8)
Other noninterest income		35	22	55	47
Total noninterest income		247	250	484	488
NONINTEREST EXPENSES
Salaries and benefits expense		249	245	491	510
Outside processing fee expense		62	65	119	128
Occupancy expense		37	37	74	74
Software expense		39	28	76	57
Equipment expense		12	12	24	24
Advertising expense		8	9	15	14
FDIC insurance expense		8	6	16	11
Other noninterest expenses		25	22	50	39
Total noninterest expenses		440	424	865	857
Income before income taxes		140	385	54	809
Provision for income taxes		27	87	6	172
Net income		113	298	48	637
Less income allocated to participating securities		1	1	1	3
Net income attributable to common shares		$ 112	$ 297	$ 47	$ 634
Basic earnings per common share		$ 0.81	$ 1.95	$ 0.34	$ 4.10
Diluted earnings per common share		$ 0.80	$ 1.94	$ 0.34	$ 4.06
Comprehensive income		$ 97	$ 429	$ 441	$ 864
Cash dividends declared on common stock		$ 98	$ 100	$ 192	$ 205
Cash dividends declared per common share		$ 0.68	$ 0.67	$ 1.36	$ 1.34

[1] Includes the effects of hedging.