CONSOLIDATED STATEMENTS OF CONDITION (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2011
Assets
Cash And Due From Banks	$ 472,806	$ 535,282	$ 464,555
Money Market Investments [Abstract]
Federal funds sold	0	75,000	0
Securities Purchased Under Agreements To Resell	240,411	252,668	200,185
Interest Bearing Deposits In Banks	1,063,852	1,048,506	761,380
Total money market investments	1,304,263	1,376,174	961,565
Trading Securities [Abstract]
Pledged securities with creditors' right to repledge	348,103	402,591	587,218
Other trading securities	56,190	33,740	47,581
Available For Sale Securities Abstract
Pledged securities with creditors' right to repledge	1,736,706	1,737,868	2,105,783
Other investment securities available-for-sale	3,401,910	3,271,955	3,580,558
Investment securities held-to-maturity, at amortized cost	124,372	125,383	142,106
Other investment securities, at lower of cost or realizable value	195,708	179,880	174,930
Loans held-for-sale, at lower of cost or fair value	361,596	363,093	569,678
Loans held-in-portfolio:
Less- Unearned Income	99,321	100,596	104,760
Allowance for loan losses	803,264	815,308	736,505
Total loans held-in-portfolio, net	23,897,198	24,135,991	24,669,834
F D I C Loss Share Asset	1,880,357	1,915,128	2,426,305
Premises and equipment, net	533,545	538,486	543,577
Interest Receivable	126,568	125,209	147,670
Servicing Asset At Fair Value Amount	156,331	151,323	167,416
Other Assets	1,439,532	1,462,393	1,314,739
Goodwill	647,911	648,350	647,387
Intangible Assets Net Excluding Goodwill	61,798	63,954	56,441
Total assets	37,049,221	37,348,432	38,829,793
Deposits Abstract
Noninterest Bearing Deposit Liabilities	5,366,420	5,655,474	4,913,009
Interest Bearing Deposit Liabilities	21,831,316	22,286,653	22,283,665
Total deposits	27,197,736	27,942,127	27,196,674
Assets sold under agreements to repurchase	2,113,557	2,141,097	2,642,800
Other short-term borrowings	751,200	296,200	290,302
Notes Payable	1,843,754	1,856,372	3,794,655
Other liabilities	1,175,903	1,193,883	1,100,456
Total liabilities	33,082,150	33,429,679	35,024,887
Stockholders Equity Abstract
Preferred stock	50,160	50,160	50,160
Common stock	10,276	10,263	10,236
Surplus	4,116,710	4,114,661	4,096,245
Accumulated deficit	(165,249)	(212,726)	(338,126)
Treasury stock	(1,041)	(1,057)	(607)
Accumulated other comprehensive (loss) income, net of tax	(43,785)	(42,548)	(13,002)
Total stockholders' equity	3,967,071	3,918,753	3,804,906
Total liabilities and stockholders' equity	37,049,221	37,348,432	38,829,793
Non Covered Under Loss Sharing Agreements With F D I C [Member]
Loans held-in-portfolio:
Loans held-in-portfolio	20,577,995	20,703,192	20,781,549
Real Estate Acquired Through Foreclosure	193,768	172,497	156,888
Covered Under Loss Sharing Agreements With F D I C [Member]
Loans held-in-portfolio:
Loans held-in-portfolio	4,221,788	4,348,703	4,729,550
Real Estate Acquired Through Foreclosure	$ 110,559	$ 109,135	$ 65,562