Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012		Sep. 30, 2012
ASSETS
Cash and due from banks	$ 199,464	$ 223,814	[1]	$ 176,529
Interest bearing deposits with other banks	361,401	979,800	[1]	757,207
Available-for-sale securities, at fair value	2,554,156	2,434,032	[1]	2,483,606
Loans and leases	8,806,392	8,672,752	[1]	8,716,715
Less: Unearned income	33,277	35,763	[1]	36,746
Allowance for credit losses	153,974	164,466	[1]	169,019
Net loans and leases	8,619,141	8,472,523	[1]	8,510,950
Loans held for sale	77,114	129,138	[1]	129,408
Premises and equipment, net	314,441	319,456	[1]	321,068
Accrued interest receivable	43,034	44,356	[1]	48,314
Goodwill	275,173	275,173	[1]	275,173
Bank-owned life insurance	236,969	231,120	[1]	203,798
Other real estate owned	76,853	103,248	[1]	128,211
Other assets	158,407	184,538	[1]	201,473
TOTAL ASSETS	12,916,153	13,397,198	[1]	13,235,737
Deposits:
Demand: Noninterest bearing	2,597,762	2,545,169	[1]	2,492,508
Interest bearing	4,493,359	4,799,496	[1]	4,697,260
Savings	1,220,227	1,145,785	[1]	1,103,490
Other time	2,406,598	2,597,696	[1]	2,681,382
Total deposits	10,717,946	11,088,146	[1]	10,974,640
Federal funds purchased and securities sold under agreement to repurchase	418,623	414,611	[1]	377,676
Accrued interest payable	5,156	6,140	[1]	6,759
Junior subordinated debt securities	31,446	160,312	[1]	160,312
Long-term debt	83,500	33,500	[1]	33,500
Other liabilities	178,871	245,437	[1]	236,147
TOTAL LIABILITIES	11,435,542	11,948,146	[1]	11,789,034
SHAREHOLDERS' EQUITY
Common stock, $2.50 par value per share Authorized - 500,000,000 shares; Issued - 95,211,602, 94,549,867 and 94,410,710 shares, respectively	238,029	236,375	[1]	236,102
Capital surplus	312,798	311,909	[1]	311,271
Accumulated other comprehensive (loss) income	(39,389)	(8,646)	[1]	5,952
Retained earnings	969,173	909,414	[1]	893,378
TOTAL SHAREHOLDERS' EQUITY	1,480,611	1,449,052	[1]	1,446,703
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 12,916,153	$ 13,397,198	[1]	$ 13,235,737

[1] Derived from audited financial statements.See accompanying notes to consolidated financial statements.