CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 160,729	$ 146,106
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	50,135	46,785
(Accretion) of discount and amortization of premiums, net	(113,327)	(104,247)
Changes in FDIC indemnification asset and receivable/payable	111,192	79,804
Stock compensation costs	6,745	5,898
Tax benefit from stock compensation plans, net	(3,787)	(2,803)
Provision for loan losses	14,933	13,327
Impairment on other real estate owned	539	2,153
Net gain on sales of investment securities, loans and other assets	(20,941)	(16,512)
Originations and purchases of loans held for sale	(86,312)	(71,572)
Proceeds from sales and net change in loans held for sale	109,241	11,155
Net proceeds from FDIC shared-loss agreements	2,367	42,494
Net change in accrued interest receivable and other assets	(11,754)	50,275
Net change in accrued expenses and other liabilities	(171,084)	(43,579)
Other net operating activities	(1,165)	(1,548)
Total adjustments	(113,218)	11,630
Net cash provided by operating activities	47,511	157,736
CASH FLOWS FROM INVESTING ACTIVITIES
Acquisitions, net of cash paid	138,465
Net (increase) decrease in:
Loans	(1,581,763)	(679,359)
Short-term investments	(28,657)	35,940
Purchases of:
Securities purchased under resale agreements	(475,000)	(300,000)
Investment securities available-for-sale	(250,607)	(699,650)
Loans receivable	(1,817)	(466,715)
Premises and equipment	(5,859)	(10,328)
Investments in affordable housing partnerships and other investments	(43,195)	(16,683)
Proceeds from sale of:
Investment securities available-for-sale	351,842	325,721
Loans receivable	149,409	55,129
Loans held for sale originated for investment	206,569
Other real estate owned	20,943	38,677
Repayments, maturities and redemptions of investment securities available-for-sale	207,746	262,074
Paydowns, maturities and termination of securities purchased under resale agreements	500,000	300,000
Redemption of Federal Home Loan Bank stock	27,309	21,136
Surrender of life insurance policies	49,111
Other net investing activities	(5,525)	244
Net cash used in investing activities	(741,029)	(1,133,814)
Net increase (decrease) in:
Deposits	1,143,322	972,853
Short-term borrowings		(20,000)
Proceeds from:
Issuance of common stock pursuant to various stock plans and agreements	1,207	1,150
Payment for:
Termination of securities purchased under resale agreements	(15,000)
Repayment of FHLB advances	(10,000)
Repayment of long-term debt	(20,310)
Repurchase of vested shares due to employee tax liability	(7,308)	(8,667)
Repurchase of shares of treasury stock pursuant to the Stock Repurchase Plan		(199,992)
Cash dividends	(51,956)	(44,961)
Tax benefit from stock compensation plans, net	3,787	2,803
Net cash provided by financing activities	1,043,742	703,186
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	350,224	(272,892)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	895,820	1,323,106
CASH AND CASH EQUIVALENTS, END OF PERIOD	1,246,044	1,050,214
Cash paid during the period for:
Interest	56,357	58,336
Income tax payments, net of refunds	221,355	92,096
Noncash investing and financing activities:
Loans transferred to loans held for sale, net	460,828	19,125
Transfers to other real estate owned	38,048	29,782
Issuance of stock related to acquisition	190,830
Conversion of preferred stock to common stock		83,027
Loans to facilitate sales of other real estate owned		$ 139