Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
INTEREST INCOME
Interest and fees on loans		$ 408	$ 619	$ 1,359	$ 1,875
Interest on investment securities		72	75	220	222
Interest on short-term investments		4	17	25	51
Total interest income		484	711	1,604	2,148
INTEREST EXPENSE
Interest on deposits		15	73	91	192
Interest on short-term borrowings		0	2	1	9
Interest on medium- and long-term debt	[1]	11	50	70	152
Total interest expense		26	125	162	353
Net interest income		458	586	1,442	1,795
Provision for credit losses		5	35	554	66
Net interest income after provision for credit losses		453	551	888	1,729
NONINTEREST INCOME
Card fees		71	67	198	195
Fiduciary income		51	53	157	154
Service charges on deposit accounts		47	51	138	153
Commercial lending fees		19	23	53	66
Foreign exchange income		9	11	29	33
Bank-owned life insurance		12	11	33	31
Letter of credit fees		9	10	27	29
Brokerage fees		5	7	17	21
Net securities losses		0	0	0	(8)
Other noninterest income		29	23	84	70
Total noninterest income		252	256	736	744
NONINTEREST EXPENSES
Salaries and benefits expense		257	253	748	763
Outside processing fee expense		58	66	177	194
Occupancy expense		40	39	114	113
Software expense		39	30	115	87
Equipment expense		12	13	36	37
Advertising expense		9	10	24	24
FDIC insurance expense		8	6	24	17
Other noninterest expenses		23	18	73	57
Total noninterest expenses		446	435	1,311	1,292
Income before income taxes		259	372	313	1,181
Provision for income taxes		48	80	54	252
Net income		211	292	259	929
Less income allocated to participating securities		0	2	1	5
Preferred stock dividends		8	0	8	0
Net income attributable to common shares		$ 203	$ 290	$ 250	$ 924
Basic earnings per common share		$ 1.45	$ 1.98	$ 1.79	$ 6.08
Diluted earnings per common share		$ 1.44	$ 1.96	$ 1.78	$ 6.02
Comprehensive income		$ 169	$ 338	$ 610	$ 1,202
Cash dividends declared on common stock		$ 94	$ 97	$ 284	$ 302
Cash dividends declared per common share		$ 0.68	$ 0.67	$ 2.04	$ 2.01

[1] Includes the effects of hedging.