CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Cash Flows From Operating Activities
Net income	$ 48,566	$ 42,290	$ 89,350	$ 59,316
Adjustments to net income:
Provision for credit losses on loans and leases, excluding covered loans		32,000		87,000
Provision for losses on covered loans	1,716	46,516	20,832	46,516
Amortization of intangibles	2,104	2,128	4,272	4,575
Depreciation and amortization	6,904	6,363	13,652	12,710
Share-based employee compensation expense			9,468	8,109
Deferred income tax benefit			2,686	17,813
(Gain) loss on disposal of assets	(8,422)	2,814	(10,846)	1,423
Gain on sale of securities	(1,689)	(355)	(1,819)	(2,489)
Gain on acquisition	(8,164)	(25,228)	(8,164)	(25,228)
Impairment loss on securities	294	506	458	1,509
Other, net			(9,418)	(15,184)
Net change in:
Trading securities			129,818	25,015
Other assets and other liabilities, net			51,709	154,439
Net cash provided by operating activities			291,998	375,524
Cash Flows From Investing Activities
Purchase of securities available-for-sale			(2,017,983)	(1,684,200)
Sales of securities available-for-sale	47,200	24,400	53,304	432,021
Maturities and paydowns of securities available-for-sale			1,367,512	907,157
Loan originations, net of principal collections			(108,530)	629,454
Net payments for premises and equipment			(19,637)	(10,361)
Net cash acquired in acquisitions			28,066	94,706
Other investing activities, net			59,628	10,235
Net cash (used in) provided by investing activities			(637,640)	379,012
Cash Flows From Financing Activities
Net increase in deposits			961,463	51,966
Net decrease in federal funds purchased and securities sold under repurchase agreements				(449,079)
Net decrease in short-term borrowings, net of transfers from long-term debt			(3,105)	(30,529)
Net decrease in long-term debt			(757)	(353)
Proceeds from exercise of stock options			4,507	17,761
Tax benefit from exercise of stock options			992	3,281
Redemption of preferred stock				(200,000)
Repurchase of common stock warrants				(18,500)
Cash dividends paid			(21,211)	(13,467)
Other financing activities, net			(1,429)	(3,261)
Net cash provided by (used in) financing activities			940,460	(642,181)
Net increase in cash and cash equivalents			594,818	112,355
Cash and cash equivalents at beginning of year			434,689	812,926
Cash and cash equivalents at end of period	1,029,507	925,281	1,029,507	925,281
Cash paid during the period for:
Interest			40,129	39,413
Income taxes			26,072
Non-cash investing activities:
Transfer of loans to other real estate owned			64,191	66,653
Assets acquired (liabilities assumed) in acquisitions:
Securities available-for-sale	10,441	17,183	10,441	17,183
Covered loans	55,313	330,566	55,313	330,566
Covered other real estate owned	7,463	15,161	7,463	15,161
Deposits	(126,795)	(541,499)	(126,795)	(541,499)
Other borrowings	$ (3,165)	$ (30,539)	$ (3,165)	$ (30,539)