Consolidated Balance Sheets - USD ($) $ in Millions		Dec. 31, 2017	Dec. 31, 2016
ASSETS
Cash and due from banks		$ 1,438	$ 1,249
Interest-bearing deposits with banks		4,407	5,969
Other short-term investments		96	92
Investment securities available-for-sale	[1]	10,938	10,787
Investment securities held-to-maturity		1,266	1,582
Commercial loans		31,060	30,994
Real estate construction loans		2,961	2,869
Commercial mortgage loans		9,159	8,931
Lease financing		468	572
International loans		983	1,258
Residential mortgage loans		1,988	1,942
Consumer loans		2,554	2,522
Total loans		49,173	49,088
Less allowance for loan losses		(712)	(730)
Net loans		48,461	48,358
Premises and equipment		466	501
Accrued income and other assets		4,495	4,440
Total assets		71,567	72,978
LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest-bearing deposits		32,071	31,540
Money market and interest-bearing checking deposits		21,500	22,556
Savings deposits		2,152	2,064
Customer certificates of deposit		2,165	2,806
Foreign office time deposits		15	19
Total interest-bearing deposits		25,832	27,445
Total deposits		57,903	58,985
Short-term borrowings		10	25
Accrued expenses and other liabilities		1,069	1,012
Medium- and long-term debt		4,622	5,160
Total liabilities		63,604	65,182
Common stock - $5 par value: Authorized - 325,000,000 shares; Issued - 228,164,824 shares		1,141	1,141
Capital surplus		2,122	2,135
Accumulated other comprehensive loss		(451)	(383)
Retained earnings		7,887	7,331
Less cost of common stock in treasury - 55,306,483 shares at 12/31/17 and 52,851,156 shares at 12/31/16		(2,736)	(2,428)
Total shareholders' equity		7,963	7,796
Total liabilities and shareholders' equity		$ 71,567	$ 72,978

[1] Included auction-rate securities at amortized cost and fair value of $51 million and $49 million, respectively, as of December 31, 2017 and $55 million and $54 million, respectively, as of December 31, 2016.