CONSOLIDATED STATEMENTS OF CONDITION (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Assets
Cash And Due From Banks	$ 477,342	$ 535,282
Money Market Investments [Abstract]
Federal funds sold	38,358	75,000
Securities Purchased Under Agreements To Resell	240,761	252,668
Time deposits with other banks	646,544	1,048,506
Total money market investments	925,663	1,376,174
Trading Securities [Abstract]
Pledged securities with creditors' right to repledge	181,133	402,591
Other trading securities	45,785	33,740
Available For Sale Securities Abstract
Pledged securities with creditors' right to repledge	1,464,402	1,737,868
Other investment securities available-for-sale	3,655,899	3,271,955
Investment securities held-to-maturity, at amortized cost	122,072	125,383
Other investment securities, at lower of cost or realizable value	213,389	179,880
Loans held-for-sale, at lower of cost or fair value	337,049	363,093
Loans held-in-portfolio:
Less- Unearned Income	97,255	100,596
Allowance for loan losses	761,172	815,308
Total loans held-in-portfolio, net	23,896,548	24,135,991
FDIC Loss share asset	1,559,057	1,915,128
Premises and equipment, net	525,733	538,486
Accrued income receivable	133,943	125,209
Mortgage servicing assets, at fair value	158,367	151,323
Other Assets	1,724,927	1,462,393
Goodwill	647,757	648,350
Other intangible assets	56,762	63,954
Total assets	36,503,366	37,348,432
Deposits Abstract
Non-interest bearing	5,404,470	5,655,474
Interest bearing	20,915,029	22,286,653
Total deposits	26,319,499	27,942,127
Assets sold under agreements to repurchase	1,944,564	2,141,097
Other short-term borrowings	1,206,200	296,200
Notes Payable	1,866,377	1,856,372
Other liabilities	1,097,742	1,193,883
Total liabilities	32,434,382	33,429,679
Stockholders Equity Abstract
Preferred stock	50,160	50,160
Common stock	1,031	1,026
Surplus	4,131,681	4,123,898
Accumulated deficit	(54,183)	(212,726)
Treasury stock	(270)	(1,057)
Accumulated other comprehensive (loss) income, net of tax	(59,435)	(42,548)
Total stockholders' equity	4,068,984	3,918,753
Total liabilities and stockholders' equity	36,503,366	37,348,432
Non Covered Under Loss Sharing Agreements With F D I C [Member]
Loans held-in-portfolio:
Loans held-in-portfolio	20,851,108	20,703,192
Other real estate owned	252,024	172,497
Covered Under Loss Sharing Agreements With F D I C [Member]
Loans held-in-portfolio:
Loans held-in-portfolio	3,903,867	4,348,703
Other real estate owned	$ 125,514	$ 109,135