CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
INTEREST INCOME:
Interest and fees on loans and leases	$ 1,096	$ 926	$ 3,128	$ 2,690
Interest and fees on loans held for sale, at fair value	5	4	13	10
Interest and fees on other loans held for sale	3	1	6	6
Investment securities	155	146	469	432
Interest-bearing deposits in banks	5	2	13	6
Total interest income	1,264	1,079	3,629	3,144
INTEREST EXPENSE:
Deposits	123	71	311	194
Federal funds purchased and securities sold under agreements to repurchase	1	1	2	2
Other short-term borrowed funds	7	10	22	33
Long-term borrowed funds	71	52	201	143
Total interest expense	202	134	536	372
Net interest income	1,062	945	3,093	2,772
Provision for credit losses	72	86	238	267
Net interest income after provision for credit losses	990	859	2,855	2,505
NONINTEREST INCOME:
Service charges and fees	131	134	385	390
Card fees	58	52	177	153
Capital markets fees	53	36	152	99
Trust and investment services fees	38	37	116	112
Letter of credit and loan fees	30	28	90	83
Foreign exchange and interest rate products	24	28	77	72
Mortgage banking fees	27	33	80	76
Securities gains, net	2	0	9	13
Net securities impairment losses recognized in earnings	(1)	(3)	(6)	(11)
Other income	19	90	50	133
Total noninterest income	381	435	1,130	1,120
NONINTEREST EXPENSE:
Salaries and employee benefits	436	432	1,312	1,289
Outside services	99	102	286	279
Occupancy	78	78	239	230
Equipment expense	65	65	196	194
Amortization of software	45	46	134	126
Other operating expense	135	144	409	387
Total noninterest expense	858	867	2,576	2,505
Income before income tax expense	513	427	1,409	1,120
Income tax expense	165	130	423	357
NET INCOME	348	297	986	763
Net income available to common stockholders	$ 341	$ 290	$ 972	$ 749
Weighted-average common shares outstanding:
Basic (in Shares)	500,861,076	519,458,976	505,529,991	525,477,273
Diluted (in Shares)	502,157,384	521,122,466	507,062,805	527,261,384
Per common share information:
Basic earnings (in Dollars per Share)	$ 0.68	$ 0.56	$ 1.92	$ 1.43
Diluted earnings (in Dollars per Share)	0.68	0.56	1.92	1.42
Dividends declared and paid (in Dollars per Share)	$ 0.18	$ 0.12	$ 0.46	$ 0.34