CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015		Sep. 30, 2014
Cash flows from operating activities:
Net income (loss)	$ (203,919)		$ (184,007)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Amortization of Investment Securities premiums and discounts, net	633,937		466,338
Amortization of commercial real estate investment premiums and discounts, net	(1,080)		607
Amortization of intangibles	5,095		445
Amortization of deferred financing costs	5,192		8,023
Amortization of net origination fees and costs, net	(3,350)		(3,337)
Amortization of contingent beneficial conversion feature and equity component of Convertible Senior Notes	12,246		24,128
Depreciation expense	8,773		1,264
Net gain on sale of commercial real estate			(2,748)
Net loss on sale of commercial real estate debt held for investment	100
Net (gains) losses on sales of Investment Securities	(70,796)		(91,314)
Net (gain) loss on sale of investment in affiliate	12,450
Stock compensation expense	1,089		998
Impairment of goodwill	22,966
Unrealized (gains) losses on interest rate swaps	587,995		75,287
Net unrealized (gains) losses on financial instruments measured at fair value through earnings	40,466		56,652
Equity in net income from unconsolidated joint venture	414
Net (gains) losses on trading assets	12,961		188,041
Proceeds from repurchase agreements of RCap	1,447,650,000		747,790,774
Payments on repurchase agreements of RCap	(1,452,000,000)		(742,842,907)
Proceeds from reverse repurchase agreements	39,875,000		60,698,578
Payments on reverse repurchase agreements	(39,775,000)		(60,598,578)
Proceeds from securities borrowed			23,888,955
Payments on securities borrowed			(21,306,062)
Proceeds from securities loaned			41,939,298
Payments on securities loaned			(44,466,959)
Proceeds from U.S. Treasury securities			3,159,253
Payments on U.S. Treasury securities			(3,920,425)
Net payments on derivatives	7,288		(98,704)
Net change in:
Due to / from brokers			8,596
Other assets	(29,324)		(2,011)
Accrued interest and dividends receivable	52,057		(27,362)
Receivable for investment advisory income	6,410		(1,530)
Accrued interest payable	(34,947)		34,733
Accounts payable and other liabilities	17,417		2,958
Net cash provided by (used in) operating activities	(3,166,560)		4,798,984
Cash flows from investing activities:
Payments on purchases of Investment Securities	(13,172,943)		(27,898,595)
Proceeds from sales of Investment Securities	22,081,011		15,529,556
Principal payments on Agency mortgage-backed securities	7,811,368		5,945,647
Proceeds from sale of investment in affiliate	126,402
Purchase of securitized loans at fair value	(2,574,353)
Origination of commercial real estate investments, net	(826,877)		(206,849)
Proceeds from sale of commercial real estate investments	227,450
Principal payments on commercial real estate debt investments	10,170
Proceeds from sales of commercial real estate held for sale			26,019
Principal payments on commercial real estate investments	327,936		237,796
Purchase of investments in real estate	(29,900)		(36,743)
Investment in unconsolidated joint venture	(70,602)
Purchase of equity securities	(27,519)
Proceeds from sale of equity securities	13,119
Net cash provided by (used in) investing activities	13,309,874		(6,429,274)
Cash flows from financing activities:
Proceeds from repurchase agreements	156,196,644		147,564,412
Principal payments on repurchase agreements	(166,759,206)		(144,682,558)
Payments on maturity of convertible senior notes	(857,541)
Proceeds from other secured financing	687,935
Payments on other secured financing	(327,965)
Proceeds from issuance of securitized debt	2,382,810		260,700
Principal repayments on securitized debt	(84,560)
Principal repayments on securitized loans	201
Payment of deferred financing cost	(886)		(4,288)
Net proceeds from direct purchases and dividend reinvestments	1,724		1,785
Proceeds from mortgages payable	20,450		23,375
Principal payments on participation sold	(220)		(207)
Principal payments on mortgages payable	(262)		(30)
Distributions to noncontrolling interests	(456)
Contributions from noncontrolling interests	1,107
Dividends paid	(906,910)		(906,714)
Net cash provided by (used in) financing activities	(9,647,135)		2,256,475
Net (decrease) increase in cash and cash equivalents	496,179		626,185
Cash and cash equivalents, beginning of period	1,741,244	[1]	552,436
Cash and cash equivalents, end of period	2,237,423		1,178,621
Supplemental disclosure of cash flow information:
Interest received	2,241,301		2,454,211
Dividends received	12,684		21,141
Investment advisory income received	31,258		18,955
Interest paid (excluding interest paid on interest rate swaps)	314,568		370,784
Net interest paid on interest rate swaps	450,750		640,316
Taxes paid	1,926		6,925
Noncash investing activities:
Receivable for investments sold	127,571		855,161
Payable for investments purchased	744,378		2,153,789
Net change in unrealized gains (losses) on available-for-sale securities, net of reclassification adjustment	57,972		1,781,113
Noncash financing activities:
Dividends declared, not yet paid	284,348		284,278
Commercial Real Estate Portfolio Segment [Member]
Cash flows from investing activities:
Purchases of commercial real estate debt investments	(368,511)
Sales of commercial real estate debt investments	41,016
Corporate Debt Securities [Member]
Cash flows from investing activities:
Payments on purchases of corporate debt	(301,739)		(114,183)
Principal payments on corporate debt	$ 43,846		88,078
Convertible Senior Notes 5.00 Percent Due 2015
Noncash financing activities:
Contingent beneficial conversion feature on 4% Convertible Senior Notes			$ 12,765

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