CONSOLIDATED STATEMENTS OF CONDITION (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Assets
Cash And Due From Banks	$ 515,338	$ 535,282
Money Market Investments [Abstract]
Federal funds sold	5,455	75,000
Securities Purchased Under Agreements To Resell	234,738	252,668
Time deposits with other banks	709,635	1,048,506
Total money market investments	949,828	1,376,174
Trading Securities [Abstract]
Pledged securities with creditors' right to repledge	356,624	402,591
Other trading securities	60,845	33,740
Available For Sale Securities Abstract
Pledged securities with creditors' right to repledge	939,286	1,737,868
Other investment securities available-for-sale	4,137,511	3,271,955
Investment securities held-to-maturity, at amortized cost	124,646	125,383
Other investment securities, at lower of cost or realizable value	174,287	179,880
Loans held-for-sale, at lower of cost or fair value	364,537	363,093
Loans held-in-portfolio:
Less- Unearned Income	97,801	100,596
Allowance for loan losses	766,030	815,308
Total loans held-in-portfolio, net	23,916,109	24,135,991
FDIC Loss share asset	1,631,594	1,915,128
Premises and equipment, net	527,027	538,486
Accrued income receivable	122,320	125,209
Mortgage servicing assets, at fair value	155,711	151,323
Other Assets	1,577,794	1,462,393
Goodwill	647,757	648,350
Other intangible assets	59,243	63,954
Total assets	36,612,179	37,348,432
Deposits Abstract
Non-interest bearing	5,578,487	5,655,474
Interest bearing	21,836,293	22,286,653
Total deposits	27,414,780	27,942,127
Assets sold under agreements to repurchase	1,426,636	2,141,097
Other short-term borrowings	316,200	296,200
Notes Payable	1,877,583	1,856,372
Other liabilities	1,555,743	1,193,883
Total liabilities	32,590,942	33,429,679
Stockholders Equity Abstract
Preferred stock	50,160	50,160
Common stock	1,028	1,026
Surplus	4,127,216	4,123,898
Accumulated deficit	(100,440)	(212,726)
Treasury stock	(144)	(1,057)
Accumulated other comprehensive (loss) income, net of tax	(56,583)	(42,548)
Total stockholders' equity	4,021,237	3,918,753
Total liabilities and stockholders' equity	36,612,179	37,348,432
Non Covered Under Loss Sharing Agreements With F D I C [Member]
Loans held-in-portfolio:
Loans held-in-portfolio	20,763,610	20,703,192
Other real estate owned	226,629	172,497
Covered Under Loss Sharing Agreements With F D I C [Member]
Loans held-in-portfolio:
Loans held-in-portfolio	4,016,330	4,348,703
Other real estate owned	$ 125,093	$ 109,135