CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 116,596	$ 61,264
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	30,708	33,563
(Accretion) of discount and amortization of premiums, net	(101,894)	(140,678)
Decrease in FDIC indemnification asset and receivable	36,249	59,239
Gain on acquisition	0	(27,571)
Stock compensation costs	5,570	3,876
Deferred tax expense	63,616	28,373
Provision for loan losses	53,006	131,677
Impairment on other real estate owned	19,655	28,840
Net gain on sales of investment securities, loans and other assets	(19,518)	(28,814)
Originations of loans held for sale	(6,884)	(17,717)
Proceeds from sale of loans held for sale	8,081	(22,762)
Prepayment penalty for Federal Home Loan Bank advances	8,455	13,832
Net proceeds from FDIC shared-loss agreements	101,102	176,770
Net change in accrued interest receivable and other assets	(129,150)	3,391
Net change in accrued expenses and other liabilities	156,015	152,235
Other net operating activities	(1,653)	9,657
Total adjustments	223,358	449,435
Net cash provided by operating activities	339,954	510,699
CASH FLOWS FROM INVESTING ACTIVITIES
Acquisition of WFIB assets	0	67,186
Net (increase) decrease in loans	(396,027)	656,906
Net decrease in short-term investments	58,081	8,584
Purchases of:
Securities purchased under resale agreements	(418,369)	(450,000)
Investment securities available-for-sale	(1,385,644)	(1,895,119)
Loans receivable	(463,981)	(370,339)
Federal Reserve Bank stock	0	(10,500)
Premises and equipment	(2,199)	(82,353)
Investments in affordable housing partnerships	(17,444)	(29,959)
Proceeds from sale of:
Investment securities available-for-sale	527,823	863,565
Securities purchased under resale agreements	0	450,000
Loans receivable	125,288	286,210
Loans held for sale originated for investment	368,478	0
Other real estate owned	74,004	46,142
Premises and equipment	9,111	44
Repayments, maturity and redemption of investment securities available-for-sale	561,711	1,573,368
Paydown and maturities of securities purchased under resale agreements	106,088	0
Redemption of Federal Home Loan Bank stock	12,903	6,770
Net cash (used in) provided by investing activities	(840,177)	1,120,505
Net increase (decrease) in:
Deposits	1,495,126	(464,829)
Short-term borrowings	(5,930)	7,742
Proceeds from:
FHLB advances	0	350,000
Issuance of common stock pursuant to various stock plans and agreements	3,341	1,801
Payment for:
Repayment of FHLB advances	(683,130)	(1,215,812)
Repayment of long-term debt	(10,309)	0
Repayment of notes payable and other borrowings	(6,250)	0
Repurchase of common stock warrants	(14,500)	0
Cash dividends	(12,352)	(13,679)
Other net financing activities	(98)	(660)
Net cash provided by (used in) financing activities	765,898	(1,335,437)
Effect of exchange rate changes on cash and cash equivalents	(1,126)	0
NET INCREASE IN CASH AND CASH EQUIVALENTS	264,549	295,767
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	1,333,949	1,099,084
CASH AND CASH EQUIVALENTS, END OF PERIOD	1,598,498	1,394,851
Cash paid during the period for:
Interest	92,622	109,749
Income tax payments, net of refunds	12,587	18,828
Noncash investing and financing activities:
Transfers to other real estate owned/affordable housing investments	104,842	132,102
Conversion of preferred stock to common stock	31	325,299
Loans to facilitate sales of other real estate owned	7,562	1,167
Loans to facilitate sales of loans	17,416	35,652
Loans to facilitate sales of premises and equipment	11,100	0
Loans transferred to loans held for sale	$ 479,582	$ 381,433