Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Assets:
Cash and due from banks	$ 885,121	$ 790,106
Interest-bearing deposits	3,646,756	2,650,425
Federal funds sold and resell agreements	24,248	84,448
Total cash and cash equivalents	4,556,125	3,524,979
Securities held to maturity, at amortized cost	3,139,748	2,956,381
Securities available for sale, at estimated fair value	5,895,436	6,203,299
Trading account securities	16,398	30,074
Loans, net of unearned discounts	9,515,700	9,223,848
Less: Allowance for loan losses	(92,438)	(104,453)
Net loans	9,423,262	9,119,395
Premises and equipment, net	313,331	315,934
Goodwill	536,649	535,509
Other intangible assets, net	6,345	8,147
Cash surrender value of life insurance policies	141,108	138,005
Accrued interest receivable and other assets	284,537	292,346
Total assets	24,312,939	23,124,069
Liabilities:
Non-interest-bearing demand deposits	8,311,149	8,096,937
Interest-bearing deposits	12,377,637	11,400,429
Total deposits	20,688,786	19,497,366
Federal funds purchased and repurchase agreements	668,253	561,061
Junior subordinated deferrable interest debentures	123,712	123,712
Other long-term borrowings	100,000	100,007
Accrued interest payable and other liabilities	218,027	424,441
Total liabilities	21,798,778	20,706,587
Shareholders’ Equity:
Preferred stock, par value $0.01 per share; 10,000,000 shares authorized; 6,000,000 Series A shares ($25 liquidation preference) issued in 2013, none issued in 2012	144,486	0
Common stock, par value $0.01 per share; 210,000,000 shares authorized; 61,632,464 shares issued in 2013 and 61,479,189 shares issued in 2012	617	615
Additional paid-in capital	724,197	702,968
Retained earnings	1,575,282	1,475,851
Accumulated other comprehensive income, net of tax	140,434	238,048
Treasury stock, at cost; 1,066,021 shares in 2013, none in 2012	(70,855)	0
Total shareholders’ equity	2,514,161	2,417,482
Total liabilities and shareholders’ equity	$ 24,312,939	$ 23,124,069