CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
INTEREST INCOME:
Interest and fees on loans and leases	$ 1,040	$ 896	$ 2,032	$ 1,764
Interest and fees on loans held for sale, at fair value	4	3	8	6
Interest and fees on other loans held for sale	2	4	3	5
Investment securities	154	141	314	286
Interest-bearing deposits in banks	5	2	8	4
Total interest income	1,205	1,046	2,365	2,065
INTEREST EXPENSE:
Deposits	102	63	188	123
Federal funds purchased and securities sold under agreements to repurchase	0	0	1	1
Other short-term borrowed funds	7	12	15	23
Long-term borrowed funds	70	48	130	91
Total interest expense	179	123	334	238
Net interest income	1,026	923	2,031	1,827
Provision for credit losses	70	90	166	181
Net interest income after provision for credit losses	956	833	1,865	1,646
NONINTEREST INCOME:
Service charges and fees	129	130	254	256
Card fees	59	51	119	101
Capital markets fees	51	38	99	63
Trust and investment services fees	39	38	78	75
Letter of credit and loan fees	31	28	60	55
Foreign exchange and interest rate products	26	26	53	44
Mortgage banking fees	30	25	53	43
Securities gains, net	3	4	7	13
Net securities impairment losses recognized in earnings	(4)	(7)	(5)	(8)
Other income	6	22	31	43
Total noninterest income	370	355	749	685
NONINTEREST EXPENSE:
Salaries and employee benefits	432	432	876	857
Outside services	96	86	187	177
Occupancy	79	76	161	152
Equipment expense	64	64	131	129
Amortization of software	45	41	89	80
Other operating expense	148	128	274	243
Total noninterest expense	864	827	1,718	1,638
Income before income tax expense	462	361	896	693
Income tax expense	144	118	258	227
NET INCOME	318	243	638	466
Net income available to common stockholders	$ 318	$ 243	$ 631	$ 459
Weighted-average common shares outstanding:
Basic (in Shares)	506,371,846	528,968,330	507,903,141	528,519,489
Diluted (in Shares)	507,414,122	530,365,203	509,362,055	530,396,871
Per common share information:
Basic earnings (in Dollars per Share)	$ 0.63	$ 0.46	$ 1.24	$ 0.87
Diluted earnings (in Dollars per Share)	0.63	0.46	1.24	0.87
Dividends declared and paid (in Dollars per Share)	$ 0.14	$ 0.12	$ 0.28	$ 0.22