Consolidated Statements Of Cash Flows (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
OPERATING ACTIVITIES
Net income	$ 164,995	$ 162,959
Adjustments to reconcile net income to cash provided by operating activities:
Amortization of intangibles	3,337	4,727
Provision for loan and lease losses	143,024	108,629
Deferred tax (benefit) expense	(36,243)	(82,228)
Change in current taxes payable	52,970	2,260
Depreciation	48,883	46,565
Change in accrued interest payable	(14,851)	(4,348)
Change in income earned not collected	46,753	(14,860)
Gain on acquisitions	(151,262)	(136,000)
Securities losses (gains)	291	(1,885)
Origination of loans held for sale	(333,860)	(420,346)
Proceeds from sale of loans	350,855	413,958
Gain on sale of loans	(6,240)	(6,084)
Loss on sale of other real estate	4,410	1,005
Net amortization (accretion) of premiums and discounts	(129,652)	(25,868)
FDIC receivable for loss share agreements	313,375	62,789
Net change in other assets	123,791	67,944
Net change in other liabilities	696	41,399
Net cash provided by operating activities	581,272	220,616
INVESTING ACTIVITIES
Net change in loans outstanding	311,591	526,380
Purchases of investment securities available for sale	(2,260,736)	(2,536,499)
Proceeds from maturities of investment securities held to maturity	588	956
Proceeds from maturities of investment securities available for sale	2,848,385	1,686,400
Proceeds from sales of investment securities available for sale	242,023	38,384
Net change in overnight investments	(11,612)	(325,898)
Proceeds from sale of other real estate	57,083	(54,961)
Additions to premises and equipment	(53,510)	75,738
Net cash received from acquisitions	1,148,907	106,489
Net cash provided (used) by investing activities	2,282,719	(483,011)
FINANCING ACTIVITIES
Net change in time deposits	(1,517,600)	(323,859)
Net change in demand and other interest-bearing deposits	(665,750)	1,021,589
Net change in short-term borrowings	(298,278)	(481,098)
Repayment of long-term obligations	(273,175)	0
Origination of long-term obligations	0	68,697
Repurchase of common stock	(20,665)	0
Cash dividends paid	(9,364)	(9,390)
Net cash provided (used) by financing activities	(2,784,832)	275,939
Change in cash and due from banks	79,159	13,544
Cash and due from banks at beginning of period	460,178	480,242
Cash and due from banks at end of period	539,337	493,786
CASH PAYMENTS FOR:
Interest	129,285	155,273
Income taxes	45,825	126,964
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES:
Unrealized securities gains	5,635	5,529
Unrealized gain (loss) on cash flow hedge	4,039	(8,896)
Prepaid pension benefit		0
Change in pension liability	4,944	3,008
Transfers of loans to other real estate	122,471	55,559
Acquisitions:
Assets acquired	2,935,309	2,291,659
Liabilities assumed	2,784,047	2,155,861
Net assets acquired	$ 151,262	$ 135,798