Consolidated Condensed Statements Of Cash Flow - USD ($)		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014
Operating Activities
Net income/(loss)		$ 45,884,000	$ 182,406,000
Adjustments to reconcile net income/(loss) to net cash provided/(used) by operating activities:
Provision for loan losses		8,000,000	21,000,000
Provision/(benefit) for deferred income taxes		19,002,000	(1,471,000)
Depreciation and amortization of premises and equipment		27,187,000	26,791,000
Amortization of intangible assets		3,894,000	2,945,000
Net other amortization and accretion		11,774,000	12,586,000
Net (increase)/decrease in derivatives		(5,809,000)	2,887,000
Repurchase and foreclosure provision		0	(4,300,000)
Fair value adjustment to foreclosed real estate		2,366,000	2,098,000
Litigation and regulatory matters		10,943,000	55,805,000
Stock-based compensation expense		9,952,000	8,355,000
Tax benefit/(benefit reversal) stock-based compensation expense		(456,000)	7,773,000
Equity securities (gains)/losses, net		61,000	(2,872,000)
(Gains)/losses on extinguishment of debt		(5,794,000)	4,350,000
Loss on deconsolidation of securitization trusts		0	1,960,000
Net (gains)/losses on sale/disposal of fixed assets		(2,461,000)	3,256,000
Proceeds from sale of mortgage servicing rights		0	70,071,000
Loans held-for-sale:
Purchases		(3,080,000)	(19,027,000)
Gross proceeds from settlements and sales		20,387,000	284,567,000
Fair value adjustments and other		(330,000)	(47,303,000)
Net (increase)/decrease in:
Trading securities		(36,200,000)	(535,921,000)
Fixed income receivables		(41,059,000)	(152,252,000)
Interest receivable		1,345,000	(2,551,000)
Other assets		(87,677,000)	319,312,000
Net increase/(decrease) in:
Trading liabilities		194,249,000	163,886,000
Fixed income payables		77,189,000	308,787,000
Interest payable		1,363,000	7,158,000
Other liabilities		(38,099,000)	(129,657,000)
Total adjustments		166,747,000	408,233,000
Net cash provided/(used) by operating activities		212,631,000	590,639,000
Available-for-sale securities:
Sales		284,000	7,829,000
Maturities		506,537,000	497,144,000
Purchases		(609,511,000)	(620,329,000)
Premises and equipment:
Sales		40,369,000	1,283,000
Purchases		(24,945,000)	(21,919,000)
Net (increase)/decrease in:
Loans		(517,622,000)	(444,371,000)
Interests retained from securitizations classified as trading securities		1,411,000	1,176,000
Interest-bearing cash		1,025,278,000	454,812,000
Net cash provided/(used) by investing activities		421,801,000	(124,375,000)
Common stock:
Stock options exercised		6,860,000	944,000
Cash dividends paid		(39,978,000)	(35,659,000)
Repurchase of shares	[1]	(20,052,000)	(28,903,000)
Tax benefit/(benefit reversal) stock-based compensation expense		456,000	(7,773,000)
Cash dividends paid - preferred stock - noncontrolling interest		(8,555,000)	(8,531,000)
Cash dividends paid - Series A preferred stock		(4,650,000)	(4,650,000)
Term borrowings:
Payments/maturities		(519,545,000)	(16,678,000)
Increases in restricted and secured term borrowings		0	2,089,000
Net cash paid to deconsolidate/collapse securitization trusts		0	(225,151,000)
Net increase/(decrease) in:
Deposits		796,781,000	(591,185,000)
Short-term borrowings		(803,276,000)	531,055,000
Net cash provided/(used) by financing activities		(591,959,000)	(384,442,000)
Net increase/(decrease) in cash and cash equivalents		42,473,000	81,822,000
Cash and cash equivalents at beginning of period		1,071,405,000	827,909,000
Cash and cash equivalents at end of period		1,113,878,000	909,731,000
Supplemental Disclosures
Total interest paid		59,609,000	52,785,000
Total taxes paid		14,896,000	54,540,000
Total taxes refunded		7,012,000	1,966,000
Transfer from loans to other real estate owned		$ 9,772,000	$ 17,010,000

[1] (a) 2015 and 2014 include $ 15.8 million and $ 24.0 million, respectively, repurchased under the share repurchase program launched in January 2014.