CONSOLIDATED STATEMENTS OF CONDITION (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Assets
Cash And Due From Banks	$ 388,041	$ 439,363
Money Market Investments [Abstract]
Federal funds sold	2,195	33,515
Securities Purchased Under Agreements To Resell	245,758	213,462
Time deposits with other banks	823,986	838,603
Total money market investments	1,071,939	1,085,580
Trading Securities [Abstract]
Pledged securities with creditors' right to repledge	256,491	271,624
Other trading securities	37,591	42,901
Available For Sale Securities Abstract
Pledged securities with creditors' right to repledge	1,206,636	1,603,693
Other investment securities available-for-sale	3,908,000	3,480,508
Investment securities held-to-maturity, at amortized cost	141,632	142,817
Other investment securities, at lower of cost or realizable value	218,582	185,443
Loans held-for-sale, at lower of cost or fair value	190,852	354,468
Loans held-in-portfolio:
Loans held-in-portfolio	21,615,754	21,080,005
Covered Loans	3,199,998	3,755,972
Less- Unearned Income	94,095	96,813
Allowance for loan losses	635,219	730,607
Total loans held-in-portfolio, net	24,086,438	24,008,557
FDIC loss share asset	1,379,342	1,399,098
Premises and equipment, net	527,014	535,793
Accrued income receivable	143,905	125,728
Mortgage servicing assets, at fair value	153,444	154,430
Other Assets	1,935,426	1,569,578
Goodwill	647,757	647,757
Other intangible assets	49,359	54,295
Total assets	36,684,594	36,507,535
Deposits Abstract
Non-interest bearing	5,856,066	5,794,629
Interest bearing	20,903,362	21,205,984
Total deposits	26,759,428	27,000,613
Assets sold under agreements to repurchase	1,672,705	2,016,752
Other short-term borrowings	1,226,200	636,200
Notes Payable	1,795,766	1,777,721
Other liabilities	1,035,459	966,249
Total liabilities	32,489,558	32,397,535
Stockholders Equity Abstract
Preferred stock	50,160	50,160
Common stock	1,033	1,032
Surplus	4,153,525	4,150,294
Accumulated deficit	217,126	11,826
Treasury stock	(769)	(444)
Accumulated other comprehensive (loss) income, net of tax	(226,039)	(102,868)
Total stockholders' equity	4,195,036	4,110,000
Total liabilities and stockholders' equity	36,684,594	36,507,535
Non Covered Under Loss Sharing Agreements With F D I C [Member]
Loans held-in-portfolio:
Other real estate owned	158,920	266,844
Covered Under Loss Sharing Agreements With F D I C [Member]
Loans held-in-portfolio:
Covered Loans	3,199,998	3,755,972
Other real estate owned	$ 183,225	$ 139,058