CONSOLIDATED STATEMENTS OF CONDITION (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2010
Assets
Cash and due from banks	$ 567,141	$ 452,373	$ 580,811
Money Market Investments [Abstract]
Federal funds sold	16,179	16,110	0
Securities purchased under agreements to resell	216,939	165,851	290,456
Time deposits with other banks	1,036,021	797,334	1,733,493
Total money market investments	1,269,139	979,295	2,023,949
Trading account securities, at fair value:
Pledged securities with creditors' right to repledge	197,840	492,183	434,637
Trading Securities Not Pledged As Collateral	75,099	54,530	48,555
Investment securities available-for-sale, at fair value:
Pledged securities with creditors' right to repledge	1,696,581	2,031,123	2,048,258
Other Available For Sale Securities	3,529,948	3,205,729	3,693,225
Investment securities held-to-maturity, at amortized cost	128,546	122,354	214,152
Other investment securities, at lower of cost or realizable value	173,569	163,513	158,309
Loans held-for-sale, at lower of cost or fair value	368,777	893,938	115,088
Loans held-in-portfolio:
Less- Unearned Income	101,351	106,241	106,685
Allowance for loan losses	772,921	793,225	1,243,994
Total loans held-in-portfolio, net	24,413,388	24,771,692	25,850,628
F D I C Loss Share Asset	1,798,339	2,318,183	2,324,978
Premises and equipment, net	536,529	545,453	531,849
Accrued income receivable	134,263	150,658	160,167
Mortgage servicing assets, at fair value	157,226	166,907	165,947
Other assets	2,168,529	1,449,887	1,443,158
Goodwill	648,353	647,387	645,944
Other intangible assets	64,212	58,696	60,438
Total assets	38,178,603	38,722,962	40,725,284
Deposits:
Non-interest bearing	5,527,450	4,939,321	5,371,439
Interest bearing	22,425,890	21,822,879	22,368,605
Total deposits	27,953,340	26,762,200	27,740,044
Federal funds purchased and assets sold under agreements to repurchase	2,601,606	2,412,550	2,358,139
Other short-term borrowings	166,200	364,222	191,342
Notes Payable	2,550,745	4,170,183	5,145,152
Other liabilities	894,111	1,213,276	1,170,476
Total liabilities	34,166,002	34,922,431	36,605,153
Stockholders' equity:
Preferred stock	50,160	50,160	50,160
Common stock	10,249	10,229	10,229
Surplus	4,099,379	4,094,005	4,094,302
Accumulated deficit	(201,770)	(347,328)	(119,877)
Treasury stock	(992)	(574)	(545)
Accumulated other comprehensive (loss) income, net of tax	55,575	(5,961)	85,862
Total stockholders' equity	4,012,601	3,800,531	4,120,131
Total liabilities and stockholders' equity	38,178,603	38,722,962	40,725,284
Non Covered Under Loss Sharing Agreements With F D I C [Member]
Loans held-in-portfolio:
Loans held-in-portfolio	20,775,237	20,834,276	22,248,112
Other real estate	175,785	161,496	168,823
Covered Under Loss Sharing Agreements With F D I C [Member]
Loans held-in-portfolio:
Loans held-in-portfolio	4,512,423	4,836,882	4,953,195
Other real estate	$ 75,339	$ 57,565	$ 56,368