Stockholders' Equity Equity Offerings (Tables)

12 Months Ended

Dec. 31, 2014

Equity [Abstract]

Schedule of Stock by Class

During fiscal years2013 and 2012, we completed follow-on public offerings of shares of our common stock summarized in the table below (in millions, except per share amounts). During fiscal year 2014, we did not complete any follow-on public offerings of shares of our common stock.

Public Offering	Price Received Per Share 1	Shares	Net Proceeds 2
Fiscal year 2013
March 2013	$31.34	57.5	$	1,803
Total fiscal year 2013		57.5	$	1,803
Fiscal year 2012
March 2012	$29.00	71.2	$	2,063
July 2012	$33.70	36.8	1,240
Total fiscal year 2012		108.0	$	3,303

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1. Price received per share is gross of underwriters' discount, if applicable, and other offering costs.

2. Net proceeds are net of the underwriters' discount, if applicable, and other offering costs.

The table below summarizes sales our common stock under such sales agreements during fiscal year2012 (in millions, except per share amounts):

At-the-Market Offering	Price Received Per Share		Shares	Net Proceeds
Fiscal year 2012	$	31.41	9.5	$	298

Schedule of Accumulated Other Comprehensive Income (Loss)

The following tables summarize changes to accumulated OCI for fiscal years2014, 2013 and 2012 (in millions):

Accumulated Other Comprehensive Income (Loss)	Net Unrealized Gain (Loss) on Available-for-Sale MBS			Net Unrealized Gain (Loss) on Swaps			Total Accumulated OCI Balance
Twelve Months Ended December 31, 2014
Balance as of December 31, 2013	$	(1,087	)	$	(296	)	$	(1,383	)
OCI before reclassifications	1,708			—			1,708
Amounts reclassified from accumulated OCI	(51		)	156			105
Balance as of December 31, 2014	$	570		$	(140	)	$	430
Twelve Months Ended December 31, 2013
Balance as of December 31, 2012	$	2,040		$	(485	)	$	1,555
OCI before reclassifications	(4,535		)	—			(4,535		)
Amounts reclassified from accumulated OCI	1,408			189			1,597
Balance as of December 31, 2013	$	(1,087	)	$	(296	)	$	(1,383	)
Twelve Months Ended December 31, 2012
Balance as of December 31, 2011	$	1,001		$	(690	)	$	311
OCI before reclassifications	2,235			—			2,235
Amounts reclassified from accumulated OCI	(1,196		)	205			(991		)
Balance as of December 31, 2012	$	2,040		$	(485	)	$	1,555

The following tables summarize reclassifications out of accumulated OCI for fiscal years2014, 2013 and 2012 (in millions):

	Fiscal Year								Line Item in the Consolidated Statements of Comprehensive Income Where Net Income is Presented
Amounts Reclassified from Accumulated OCI	2014			2013		2012
(Gain) loss amounts reclassified from accumulated OCI for available-for-sale MBS	$	(51	)	$	1,408	$	(1,196	)	Gain (loss) on sale of agency securities, net
Periodic interest costs of interest rate swaps previously designated as hedges under GAAP, net	156			189		205			Interest expense
Total reclassifications	$	105		$	1,597	$	(991	)