Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 79,809	$ 78,023
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	28,500	53,500
Depreciation and amortization of premises and equipment	12,577	10,845
Net amortization of investment securities premiums	6,099	5,251
Investment securities gains, net	(5,338)	(2,789)
Net (increase) decrease in loans held for sale	6,990	(24,397)
Amortization of intangible assets	1,069	1,562
Stock-based compensation	3,207	3,050
Excess tax benefit from share-based compensation	(148)	(14)
Decrease in accrued interest receivable	73	2,815
Decrease in other assets	21,968	3,486
Decrease in accrued interest payable	(1,622)	(1,961)
Decrease in other liabilities	(10,782)	2,550
Total adjustments	62,593	53,898
Net cash provided by operating activities	142,402	131,921
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from sales of securities available for sale	176,266	210,804
Proceeds from maturities of securities held to maturity	65	121
Proceeds from maturities of securities available for sale	381,807	371,176
Purchase of securities held to maturity	0	(14)
Purchase of securities available for sale	(674,228)	(602,642)
Decrease in short-term investments	43,192	56,868
Net increase in loans	(534,760)	(88,253)
Net purchases of premises and equipment	(9,272)	(20,654)
Net cash used in investing activities	(616,930)	(72,594)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in demand and savings deposits	55,058	(10,218)
Net decrease in time deposits	(281,412)	(279,305)
Decrease in short-term borrowings	751,919	334,648
Repayments of long-term debt	(5,086)	(131,340)
Net proceeds from issuance of stock	4,527	3,143
Excess tax benefit from share-based compensation	148	14
Dividends paid	(15,645)	(26,056)
Acquisition of treasury stock	(71,337)	0
Net cash used in financing activities	438,172	(109,114)
Net (Decrease) Increase in Cash and Due From Banks	(36,356)	(49,787)
Cash and Due From Banks at Beginning of Period	256,300	292,598
Cash and Due From Banks at End of Period	219,944	242,811
Cash paid during the period for:
Interest	44,313	56,612
Income taxes	$ 24,336	$ 22,646