Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 119,605	$ 109,494
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	76,500	105,000
Depreciation and amortization of premises and equipment	16,735	15,824
Net amortization of investment securities premiums	8,039	2,596
Investment securities gains, net	(2,831)	(1,507)
Net (increase) decrease in loans held for sale	(38,468)	20,386
Amortization of intangible assets	2,318	3,303
Stock-based compensation	3,963	3,473
Excess tax benefit from share-based compensation	(25)	0
Decrease in accrued interest receivable	1,314	1,381
Decrease in other assets	12,498	13,599
Decrease in accrued interest payable	(3,868)	(5,655)
Decrease in other liabilities	(1,966)	(18,862)
Total adjustments	74,209	139,538
Net cash provided by operating activities	193,814	249,032
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from sales of securities available for sale	225,539	419,803
Proceeds from maturities of securities held to maturity	228	388
Proceeds from maturities of securities available for sale	644,055	440,475
Purchase of securities held to maturity	(346)	(28)
Purchase of securities available for sale	(796,656)	(616,586)
Decrease in short-term investments	(26,969)	(223,063)
Net increase in loans	(63,440)	(74,029)
Net purchases of premises and equipment	(30,232)	(13,978)
Net cash used in investing activities	(47,821)	(67,018)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in demand and savings deposits	510,523	728,652
Net decrease in time deposits	(434,952)	(479,609)
Decrease in short-term borrowings	(110,062)	(225,122)
Repayments of long-term debt	(131,526)	(93,945)
Net proceeds from issuance of stock	5,085	4,848
Excess tax benefit from share-based compensation	25	0
Dividends paid	(40,117)	(23,922)
Acquisition of treasury stock	(20,360)	0
Net cash used in financing activities	(221,384)	(89,098)
Net (Decrease) Increase in Cash and Due From Banks	(75,391)	92,916
Cash and Due From Banks at Beginning of Period	292,598	198,954
Cash and Due From Banks at End of Period	217,207	291,870
Cash paid during the period for:
Interest	83,698	108,319
Income taxes	$ 22,747	$ 21,216