Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest income:
Interest and fees on loans	$ 2,289	$ 2,102	$ 1,847
Interest on money market investments	32	29	19
Interest on securities	362	350	326
Interest and Dividend Income, Operating	2,683	2,481	2,192
Interest expense:
Interest on deposits	254	135	59
Interest on short- and long-term borrowings	157	116	68
Total interest expense	411	251	127
Net Interest Income	2,272	2,230	2,065
Provision for loan losses	37	39	24
Provision for unfunded lending commitments	2	1	7
Provision for Credit Losses	39	40	17
Interest Income Expense After Provision For Credit Losses	2,233	2,270	2,048
Noninterest income:
Commercial account fees	121	122	126
Card fees	92	94	96
Retail and business banking fees	78	78	78
Loan-related fees and income	75	74	72
Capital markets and foreign exchange gain (loss)	78	58	49
Wealth management and trust fees	60	55	47
Other customer-related fees	21	27	22
Noninterest income, Customer-related Fees	525	508	490
Dividends and other investment income	34	43	40
Debt and Equity Securities, Gain (Loss)	3	1	14
Noninterest Income	562	552	544
Noninterest expense:
Salaries and employee benefits	1,141	1,070	1,006
Occupancy, net	133	132	129
Furniture, equipment, and software, net	135	126	130
Other real estate expense, net	(3)	1	(1)
Credit-related expense	20	25	29
Professional and legal services	47	52	57
Advertising	19	26	22
FDIC premiums	25	50	53
Other	225	197	231
Total noninterest Expense	1,742	1,679	1,656
Income (Loss) from Continuing Operations before Income Taxes, Domestic	1,053	1,143	936
Income taxes	237	259	344
Net Income	816	884	592
Preferred stock dividends	(34)	(34)	(40)
Preferred stock redemption	0	0	(2)
Net Income (Loss) Available to Common Stockholders, Basic	$ 782	$ 850	$ 550
Weighted average common shares outstanding during the period:
Basic shares	175,984	193,589	200,776
Diluted shares	186,504	206,501	209,653
Net earnings per common share:
Basic, per share	$ 4.41	$ 4.36	$ 2.71
Diluted, per share	$ 4.16	$ 4.08	$ 2.60