CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION - USD ($) $ in Thousands		Dec. 31, 2015	Dec. 31, 2014
ASSETS
Cash and cash equivalents (including cash pledged as collateral of $1,584,686 and $1,584,701, respectively)	[1]	$ 1,769,258	$ 1,741,244
Investments, at fair value:
Mortgage-backed securities, including pledged assets		67,233,494	82,933,606
Agency debentures (including pledged assets of $0 and $1,368,350, respectively)		152,038	1,368,350
Credit risk transfer securities (including pledged assets of $184,160 and $0, respectively)		456,510
Commercial real estate debt investments (including pledged assets of $2,911,828 and $0, respectively)	[2]	2,911,828
Investment in affiliate			143,045
Commercial real estate debt and preferred equity, held for investment (including pledged assets of $578,820 and $0, respectively)	[3]	1,348,817	1,518,165
Loans held for sale		278,600
Investments in commercial real estate		535,946	210,032
Corporate debt		488,508	166,464
Reverse repurchase agreements			100,000
Interest rate swaps, at fair value		19,642	75,225
Other derivatives, at fair value		22,066	5,499
Receivable for investments sold		121,625	1,010,094
Accrued interest and dividends receivable		231,336	278,489
Receivable for investment advisory income (including from affiliate of $0 and $10,402, respectively)			10,402
Other assets		119,422	30,486
Goodwill		71,815	94,781
Intangible assets, net		38,536	37,835
Total assets		75,190,893	88,355,367
Liabilities:
Repurchase agreements		56,230,860	71,361,926
Other secured financing		1,845,048
Convertible Senior Notes			845,295
Securitized debt of consolidated VIEs	[4]	2,540,711	260,700
Participation sold		13,286	13,693
Mortgages payable		334,707	146,553
Interest rate swaps, at fair value		1,677,571	1,608,286
Other derivatives, at fair value		49,963	8,027
Dividends payable		280,779	284,293
Payable for investments purchased		107,115	264,984
Accrued interest payable		151,843	180,501
Accounts payable and other liabilities		53,088	47,328
Total liabilities		63,284,971	75,021,586
Stockholders' Equity:
Common stock, par value $0.01 per share, 1,956,937,500 authorized, 935,929,561 and 947,643,079 issued and outstanding, respectively		9,359	9,476
Additional paid-in capital		14,675,768	14,786,509
Accumulated other comprehensive income (loss)		(377,596)	204,883
Accumulated deficit		(3,324,616)	(2,585,436)
Total stockholders' equity		11,895,974	13,328,491
Noncontrolling interest		9,948	5,290
Total equity		11,905,922	13,333,781
Total liabilities and equity		75,190,893	88,355,367
Agency Mortgage Backed Securities
Investments, at fair value:
Mortgage-backed securities, including pledged assets		65,718,224	81,565,256
Liabilities:
Repurchase agreements		55,472,998	70,047,678
Non-Agency mortgage-backed securities [Member]
Investments, at fair value:
Mortgage-backed securities, including pledged assets		906,722
7.875% Series A Cumulative Redeemable Preferred Stock
Stockholders' Equity:
Cumulative Redeemable Preferred Stock		177,088	177,088
Total equity		177,088	177,088
7.625% Series C Cumulative Redeemable Preferred Stock
Stockholders' Equity:
Cumulative Redeemable Preferred Stock		290,514	290,514
Total equity		290,514	290,514
7.50% Series D Cumulative Redeemable Preferred Stock
Stockholders' Equity:
Cumulative Redeemable Preferred Stock		445,457	445,457
Total equity		$ 445,457	$ 445,457

[1] Includes cash of consolidated VIEs of $48.5 million and $0 at December 31, 2015 and 2014, respectively.

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

[3] Includes senior securitized commercial mortgage loans of a consolidated VIE with a carrying value of $262.7 million and $398.6 million carried at amortized cost, net of an allowance for losses of $0, at December 31, 2015 and 2014, respectively.

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