CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION - USD ($) $ in Thousands		Sep. 30, 2015	Dec. 31, 2014
ASSETS
Cash and cash equivalents (including cash pledged as collateral of $2,098,919 and $1,584,701, respectively)		$ 2,237,423	$ 1,741,244	[1]
Reverse repurchase agreements	[1]		100,000
Investments, at fair value:
Agency debentures (including pledged assets of $97,463 and $1,368,350, respectively)		413,115	1,368,350	[1]
Credit risk transfer securities (including pledged assets of $101,908 and $0, respectively)		330,727
Commercial real estate debt investments (including pledged assets of $2,881,659 and $0, respectively)	[2]	2,881,659
Investment in affiliate	[1]		143,045
Commercial real estate debt and preferred equity, held for investment (including pledged assets of $220,390 and $0, respectively)	[3]	1,316,595	1,518,165	[1]
Loans held for sale		476,550
Investments in commercial real estate		301,447	210,032	[1]
Corporate debt		424,974	166,464	[1]
Receivable for investments sold		127,571	1,010,094	[1]
Accrued interest and dividends receivable		228,169	278,489	[1]
Receivable for investment advisory income (including from affiliate of $3,992 and $10,402, respectively)		3,992	10,402	[1]
Goodwill		71,815	94,781	[1]
Interest rate swaps, at fair value		39,295	75,225	[1]
Other derivatives, at fair value		87,516	5,499	[1]
Other assets		101,162	68,321	[1]
Total assets		75,338,687	88,355,367	[1]
Liabilities:
Repurchase Agreements		56,449,364	71,361,926	[1]
Other secured financing		359,970
Convertible Senior Notes	[1]		845,295
Securitized debt of consolidated VIEs	[4]	2,553,398	260,700	[1]
Mortgages payable		166,697	146,553	[1]
Participation sold		13,389	13,693	[1]
Payable for investments purchased		744,378	264,984	[1]
Accrued interest payable		145,554	180,501	[1]
Dividends payable		284,348	284,293	[1]
Interest rate swaps, at fair value		2,160,350	1,608,286	[1]
Other derivatives, at fair value		113,626	8,027	[1]
Accounts payable and other liabilities		63,280	47,328	[1]
Total liabilities		63,054,354	75,021,586	[1]
Stockholders' Equity:
Common stock, par value $0.01 per share, 1,956,937,500 authorized, 947,826,176 and 947,643,079 issued and outstanding, respectively		9,478	9,476	[1]
Additional paid-in capital		14,789,320	14,786,509	[1]
Accumulated other comprehensive income (loss)		262,855	204,883	[1]
Accumulated deficit		(3,695,884)	(2,585,436)	[1]
Total stockholders' equity		12,278,828	13,328,491	[1]
Noncontrolling interest		5,505	5,290	[1]
Total equity		12,284,333	13,333,781	[1]
Total liabilities and equity		75,338,687	88,355,367	[1]
Agency Mortgage Backed Securities
Investments, at fair value:
Mortgage-backed securities, including pledged assets		65,806,640	81,565,256	[1]
Liabilities:
Repurchase Agreements		55,938,484	70,047,678
Non-Agency mortgage-backed securities [Member]
Investments, at fair value:
Mortgage-backed securities, including pledged assets		490,037
7.875% Series A Cumulative Redeemable Preferred Stock
Stockholders' Equity:
Cumulative Redeemable Preferred Stock		177,088	177,088	[1]
Total equity		177,088	177,088
7.625% Series C Cumulative Redeemable Preferred Stock
Stockholders' Equity:
Cumulative Redeemable Preferred Stock		290,514	290,514	[1]
Total equity		290,514	290,514
7.50% Series D Cumulative Redeemable Preferred Stock
Stockholders' Equity:
Cumulative Redeemable Preferred Stock		445,457	445,457	[1]
Total equity		$ 445,457	$ 445,457

[1] Derived from the audited consolidated financial statements at December 31, 2014.

[2] Includes senior securitized commercial mortgage loans of consolidated VIEs carried at fair value of $2.6 billion and $0 at September 30, 2015 and December 31, 2014, respectively.

[3] Includes senior securitized commercial mortgage loans of a consolidated VIE with a carrying value of $314.9 million and $398.6 million carried at amortized cost, net of an allowance for losses of $0, at September 30, 2015 and December 31, 2014.

[4] Includes securitized debt of consolidated VIEs carried at fair value of $2.4 billion and $0 at September 30, 2015 and December 31, 2014, respectively.