Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
ASSETS
Cash and cash equivalents	$ 395,175	$ 367,092
Interest bearing funds with Federal Reserve Bank	527,090	829,887
Interest earning deposits with banks	18,720	17,387
Federal funds sold and securities purchased under resale agreements	58,060	69,819
Trading account assets, at fair value	9,314	5,097
Mortgage loans held for sale, at fair value	51,545	59,275
Investment securities available for sale, at fair value	3,718,195	3,587,818
Loans, net of deferred fees and costs	23,856,391	22,429,565
Allowance for loan losses	(251,758)	(252,496)
Loans, net	23,604,633	22,177,069
Premises and equipment, net	417,485	445,155
Goodwill	59,678	24,431
Other intangible assets	13,223	471
Other real estate	22,308	47,030
Deferred tax asset, net	395,356	511,948
Other assets	813,220	650,174
Total assets	30,104,002	28,792,653
Liabilities
Non-interest bearing deposits	7,085,804	6,732,970
Interest bearing deposits, excluding brokered deposits	16,183,273	15,434,171
Brokered deposits	1,378,983	1,075,520
Total deposits	24,648,060	23,242,661
Federal funds purchased and securities sold under repurchase agreements	159,699	177,025
Long-term debt	2,160,881	2,186,893
Other liabilities	207,438	185,878
Total liabilities	27,176,078	25,792,457
Shareholders' Equity
Series C Preferred Stock – no par value. 5,200,000 shares outstanding at December 31, 2016 and December 31, 2015	125,980	125,980
Common stock - $1.00 par value. Authorized 342,857,143 shares at December 31, 2016 and December 31, 2015; issued 142,025,720 at December 31, 2016 and 140,592,409 at December 31, 2015; outstanding 122,266,106 at December 31, 2016 and 129,547,032 at December 31, 2015	142,026	140,592
Additional paid-in capital	3,028,405	2,989,981
Treasury stock, at cost – 19,759,614 shares at December 31, 2016 and 11,045,377 shares at December 31, 2015	(664,595)	(401,511)
Accumulated other comprehensive loss, net	(55,659)	(29,819)
Retained earnings	351,767	174,973
Total shareholders’ equity	2,927,924	3,000,196
Total liabilities and shareholders' equity	$ 30,104,002	$ 28,792,653