Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Operating Activities
Net income	$ 95,882	$ 89,060
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	42,436	59,340
Depreciation and amortization	17,307	17,016
Benefit attributable to FDIC loss share	12,601	31,078
Accretion of acquired loans	(62,191)	(91,872)
Accretion income for lease financing	(2,168)	(1,928)
Amortization and accretion of investment securities, net
Amortization of Debt Discount (Premium)	11,352	11,129
Held to maturity amort	1,239	25
Gains on sales and calls of available-for-sale investment securities, net	(1,361)	(5,291)
Originations of loans held for sale	(575,972)	(322,760)
Proceeds from sales of loans, primarily mortgage loans sold in the secondary markets	596,412	329,967
Gains on sales of loans, net	(7,903)	(5,208)
Amortization of Intangible Assets	1,422	1,629
Net change in assets and liabilities
Interest receivable	(1,375)	(195)
Interest payable	(1,117)	(1,934)
Prepaid assets	2,420	(5,989)
Bank owned life insurance	(9,073)	(7,378)
Employee pension liability	(258)	(2,287)
Other assets and liabilities	3,888	(1,501)
NET CASH PROVIDED BY OPERATING ACTIVITIES	123,541	92,901
Proceeds from sales of securities
Available for sale	190,813	182,781
Proceeds from prepayments, calls, and maturities
Available for sale	611,382	778,697
Held to maturity	42,409	18,901
Other	0	12
Purchases of securities
Available for sale	(878,624)	(1,338,279)
Held to maturity	(98,893)	(51,151)
Other	(42)	(79)
Net decrease (increase) in loans and leases	(241,290)	(81,096)
Purchases of premises and equipment	(6,401)	(12,225)
NET CASH PROVIDED (USED) BY INVESTING ACTIVITIES	(380,646)	(502,439)
Financing Activities
Net increase in demand accounts	218,292	280,175
Net increase in savings and money market accounts	148,694	701,689
Net decrease in certificates and other time deposits	(266,169)	(853,748)
Net (decrease) increase in securities sold under agreements to repurchase	97,190	209,445
Net decrease in wholesale borrowings	(25,379)	(78,001)
Cash dividends - common	(52,084)	(51,933)
Restricted stock activity	(2,341)	(2,257)
NET CASH (USED) PROVIDED BY FINANCING ACTIVITIES	118,203	205,370
Increase (decrease) in cash and cash equivalents	(138,902)	(204,168)
Cash and cash equivalents at beginning of period	377,319	523,113
Cash and cash equivalents at end of period	238,417	318,945
Cash paid during period for:
Interest, net of amounts capitalized	27,462	43,055
Federal income taxes	$ 43,421	$ 7,915