CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
INTEREST INCOME:
Interest and fees on loans and leases	$ 5,441	$ 5,010	$ 4,249
Interest and fees on loans held for sale, at fair value	63	37	18
Interest and fees on other loans held for sale	13	10	10
Investment securities	642	672	625
Interest-bearing deposits in banks	30	29	18
Total interest income	6,189	5,758	4,920
INTEREST EXPENSE:
Deposits	1,155	785	441
Federal funds purchased and securities sold under agreements to repurchase	8	6	3
Other short-term borrowed funds	2	9	17
Long-term borrowed funds	410	426	286
Total interest expense	1,575	1,226	747
Net interest income	4,614	4,532	4,173
Provision for credit losses	393	326	321
Net interest income after provision for credit losses	4,221	4,206	3,852
NONINTEREST INCOME:
Service charges and fees	505	513	516
Mortgage banking fees	302	152	108
Card fees	254	244	233
Capital markets fees	216	179	194
Trust and investment services fees	202	171	158
Foreign exchange and interest rate products	155	126	109
Letter of credit and loan fees	135	128	121
Securities gains, net	19	19	11
Net securities impairment losses recognized in earnings on debt securities	(2)	(3)	(7)
Other income	91	67	91
Total noninterest income	1,877	1,596	1,534
NONINTEREST EXPENSE:
Salaries and employee benefits	2,026	1,880	1,766
Equipment and software expense	514	464	443
Outside services	498	447	404
Occupancy	333	333	319
Other operating expense	476	495	542
Total noninterest expense	3,847	3,619	3,474
Income before income tax expense	2,251	2,183	1,912
Income tax expense	460	462	260
NET INCOME	1,791	1,721	1,652
Net income available to common stockholders	$ 1,718	$ 1,692	$ 1,638
Weighted-average common shares outstanding:
Basic (in shares)	449,731,453	478,822,072	502,157,440
Diluted (in shares)	451,213,701	480,430,741	503,685,091
Per common share information:
Basic earnings (in dollars per share)	$ 3.82	$ 3.54	$ 3.26
Diluted earnings (in dollars per share)	$ 3.81	$ 3.52	$ 3.25