Consolidated Statements Of Cash Flow (USD $)	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Operating Activities
Net income/(loss)	$ (72,405,000)		$ 49,979,000
Adjustments to reconcile net income/(loss) to net cash provided/(used) by operating activities:
Provision for loan losses	5,000,000		10,000,000
Provision/(benefit) for deferred income taxes	(25,254,000)		(2,333,000)
Depreciation and amortization of premises and equipment	9,144,000		9,063,000
Amortization of intangible assets	1,299,000		982,000
Net other amortization and accretion	4,613,000		4,030,000
Net (increase)/decrease in derivatives	713,000		(655,000)
Fair value adjustment to foreclosed real estate	376,000		858,000
Litigation and regulatory matters	162,500,000		90,000
Stock-based compensation expense	3,024,000		2,760,000
Tax benefit/(benefit reversal) - stock-based compensation expense	(22,000)		233,000
Equity securities (gains)/losses, net	(276,000)		(5,657,000)
(Gains)/losses on extinguishment of debt	0		4,350,000
Loss on deconsolidation of securitization trust	0		1,960,000
Net (gains)/losses on sale/disposal of fixed assets	(13,000)		750,000
Proceeds from sale of mortgage servicing rights	0		68,519,000
Net (increase)/decrease in:
Trading securities	(338,597,000)		(391,890,000)
Loans held-for-sale	7,327,000		8,793,000
Capital markets receivables	(148,174,000)		(5,827,000)
Interest receivable	(5,415,000)		(3,806,000)
Other assets	(19,442,000)		254,360,000
Net increase/(decrease) in:
Capital markets payables	73,019,000		18,337,000
Interest payable	7,750,000		9,444,000
Other liabilities	(25,580,000)		9,241,000
Trading liabilities	218,827,000		298,909,000
Total adjustments	(69,181,000)		292,511,000
Net cash provided/(used) by operating activities	(141,586,000)		342,490,000
Available-for-sale securities:
Sales	276,000		13,000
Maturities	142,858,000		187,922,000
Purchases	(231,534,000)		(346,146,000)
Premises and equipment:
Sales	2,849,000		0
Purchases	(10,053,000)		(3,752,000)
Net (increase)/decrease in:
Loans	(507,890,000)		248,530,000
Interests retained from securitizations classified as trading securities	525,000		418,000
Interest-bearing cash	1,183,334,000		44,757,000
Net cash provided/(used) by investing activities	580,365,000		131,742,000
Common stock:
Stock options exercised	3,340,000		229,000
Cash dividends paid	(11,749,000)		(11,895,000)
Repurchase of shares	(16,767,000)	[1]	(2,351,000)
Tax benefit/(benefit reversal) - stock-based compensation expense	22,000		(233,000)
Cash dividends paid - preferred stock - noncontrolling interest	(2,945,000)		(2,875,000)
Cash dividends paid - Series A preferred stock	(1,550,000)		(1,550,000)
Term borrowings:
Payments/maturities	(307,834,000)		(9,489,000)
Increases in restricted and secured term borrowings	0		240,000
Net cash paid to deconsolidate/collapse securitization trusts	0		(225,151,000)
Net increase/(decrease) in:
Deposits	569,782,000		(61,880,000)
Short-term borrowings	(585,090,000)		84,915,000
Net cash provided/(used) by financing activities	(352,791,000)		(230,040,000)
Net increase/(decrease) in cash and cash equivalents	85,988,000		244,192,000
Cash and cash equivalents at beginning of period	1,071,405,000		827,909,000
Cash and cash equivalents at end of period	1,157,393,000		1,072,101,000
Supplemental Disclosures
Total interest paid	13,218,000		11,402,000
Total taxes paid	10,554,000		6,340,000
Total taxes refunded	187,000		1,238,000
Transfer from loans to other real estate owned	$ 3,462,000		$ 6,902,000

[1] 2015includes $15.8 million repurchased under the share repurchase program launched in January 2014.