Consolidated Statement of Income (Loss) (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
INTEREST INCOME
Interest and fees on loans	$ 587,526	$ 595,965	$ 582,739
Interest and dividends on investment securities
Taxable	88,919	86,945	123,371
Tax exempt	27,345	28,655	29,937
Other interest	5,193	6,719	5,575
Total interest income	708,983	718,284	741,622
INTEREST EXPENSE
Interest on deposits	31,267	41,431	65,748
Interest on Federal funds purchased and securities sold under agreements to repurchase	1,322	2,687	6,196
Interest on other short-term funding	1,519	3,294	6,215
Interest on long-term funding	29,332	44,880	50,632
Total interest expense	63,440	92,292	128,791
NET INTEREST INCOME	645,543	625,992	612,831
Provision for loan losses	10,000	3,000	52,000
Net interest income after provision for loan losses	635,543	622,992	560,831
NONINTEREST INCOME
Trust service fees	45,633	40,737	39,145
Service charges on deposit accounts	70,009	68,917	75,908
Card-based and other nondeposit fees	49,913	47,862	57,905
Insurance commissions	44,024	47,014	45,554
Brokerage and annuity commissions	14,877	15,643	17,230
Mortgage banking, net	48,847	63,500	12,723
Capital market fees, net	13,080	14,241	8,711
Bank owned life insurance income	11,855	13,952	14,896
Asset gain (losses), net	5,413	(12,096)	(12,199)
Investment securities gains (losses), net:
Realized gains (losses), net	564	4,261	(228)
Other-than-temporary impairments	0	(59)	(2,417)
Less: Non-credit portion recognized in other comprehensive income (before taxes)	0	59	1,533
Total investment securities gains (losses), net	564	4,261	(1,112)
Other	8,884	9,259	14,358
Total noninterest income	313,099	313,290	273,119
NONINTEREST EXPENSE
Personnel expense	397,015	381,404	360,144
Occupancy	59,409	60,794	55,939
Equipment	25,351	23,566	19,873
Data processing	49,445	43,548	32,475
Business development and advertising	23,346	21,303	23,038
Other intangible amortization	4,043	4,195	4,714
Loan expense	13,162	12,285	12,008
Legal and professional fees	20,226	31,232	18,205
Losses other than loans	1,942	12,258	17,921
Foreclosure/OREO expense	10,068	15,069	21,393
FDIC expense	19,461	19,478	28,484
Other	57,281	56,691	56,329
Total noninterest expense	680,749	681,823	650,523
Income before income taxes	267,893	254,459	183,427
Income tax expense (benefit)	79,201	75,486	43,728
Net income	188,692	178,973	139,699
Preferred stock dividends and discount accretion	5,158	5,200	24,830
Net income available to common equity	$ 183,534	$ 173,773	$ 114,869
Earnings per common share:
Basic	$ 1.10	$ 1.00	$ 0.66
Diluted	$ 1.10	$ 1.00	$ 0.66
Average common shares outstanding:
Basic	165,584	172,255	173,370
Diluted	165,802	172,357	173,372