$AGNC
AGNC Investment Corp. Stock $agnc

$agnc Overview Financials Valuation SEC Filings Company Website

2011 Q4 Form 10-Q Financial Statement

#000142368911000009 Filed on November 07, 2011

Income Statement

Concept	2011 Q4	2011 Q3	2011 Q1
Revenue	$328.4M	$416.3M	$180.2M
YoY Change	93.75%	381.83%	149.93%
Cost Of Revenue	$108.4M	$110.7M	$44.10M
YoY Change	272.51%	422.17%	154.91%
Gross Profit	$219.9M	$305.7M	$136.1M
YoY Change	56.62%	368.87%	148.36%
Gross Profit Margin	66.96%	73.43%	75.53%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization
YoY Change
% of Gross Profit
Operating Expenses	$24.00M	$22.00M	$11.00M
YoY Change	262.7%	375.88%	217.46%
Operating Profit	$195.9M	$283.7M	$125.1M
YoY Change	46.43%	368.33%	143.69%
Interest Expense	$91.00M	$94.00M	$36.00M
YoY Change	269.36%	407.26%	132.11%
% of Operating Profit	46.45%	33.13%	28.78%
Other Income/Expense, Net
YoY Change
Pretax Income	$213.0M	$252.0M	$134.0M
YoY Change	54.03%	318.06%	152.12%
Income Tax	$5.100M	$1.100M	$0.00
% Of Pretax Income	2.39%	0.44%	0.0%
Net Earnings	$208.0M	$251.0M	$134.0M
YoY Change	50.64%	318.14%	152.12%
Net Earnings / Revenue	63.34%	60.29%	74.36%
Basic Earnings Per Share
Diluted Earnings Per Share	$992.4K	$1.386M	$1.478M
COMMON SHARES
Basic Shares Outstanding	183.6M shares
Diluted Shares Outstanding

Balance Sheet

Concept	2011 Q4	2011 Q3	2011 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.367B	$984.0M	$301.0M
YoY Change	690.17%	755.65%	186.67%
Cash & Equivalents	$1.367B	$984.0M	$301.0M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables	$443.0M	$2.698B	$298.0M
Other Receivables	$0.00	$34.00M	$43.00M
Total Short-Term Assets	$1.810B	$3.716B	$642.0M
YoY Change	256.3%	579.34%	30.22%
LONG-TERM ASSETS
Property, Plant & Equipment
YoY Change
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$55.55B	$42.75B	$28.19B
YoY Change	303.74%	339.04%	438.03%
Other Assets	$336.0M	$375.0M	$75.00M
YoY Change	342.11%	504.84%	177.78%
Total Long-Term Assets	$56.16B	$43.32B	$28.51B
YoY Change	302.08%	341.54%	440.33%
TOTAL ASSETS
Total Short-Term Assets	$1.810B	$3.716B	$642.0M
Total Long-Term Assets	$56.16B	$43.32B	$28.51B
Total Assets	$57.97B	$47.04B	$29.16B
YoY Change	300.47%	354.09%	405.29%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$40.00M	$17.00M	$16.00M
YoY Change	400.0%	325.0%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$47.74B	$38.90B	$22.06B
YoY Change	306.15%	383.2%	374.35%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$50.01B	$40.83B	$25.72B
YoY Change	297.55%	337.55%	401.62%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$1.752B	$1.266B	$93.00M
YoY Change	440.74%	1010.53%	210.0%
Total Long-Term Liabilities	$1.752B	$1.266B	$93.00M
YoY Change	440.74%	1010.53%	210.0%
TOTAL LIABILITIES
Total Short-Term Liabilities	$50.01B	$40.83B	$25.72B
Total Long-Term Liabilities	$1.752B	$1.266B	$93.00M
Total Liabilities	$51.76B	$42.10B	$25.81B
YoY Change	301.12%	345.68%	400.48%
SHAREHOLDERS EQUITY
Retained Earnings	-$38.00M	$67.17M
YoY Change	-148.65%
Common Stock	$2.000M	$1.836M
YoY Change	208.17%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$6.212B	$4.940B	$3.345B
YoY Change
Total Liabilities & Shareholders Equity	$57.97B	$47.04B	$29.16B
YoY Change	300.47%	354.09%	405.29%

Cashflow Statement

Concept	2011 Q4	2011 Q3	2011 Q1
OPERATING ACTIVITIES
Net Income	$208.0M	$251.0M	$134.0M
YoY Change	50.64%	318.14%	152.12%
Depreciation, Depletion And Amortization
YoY Change
Cash From Operating Activities	$401.0M	$306.0M	$128.0M
YoY Change	332.11%	375.16%	252.62%
INVESTING ACTIVITIES
Capital Expenditures
YoY Change
Acquisitions
YoY Change
Other Investing Activities	-$9.706B	-$5.246B	-$11.97B
YoY Change	120.18%	230.87%	1141.55%
Cash From Investing Activities	-$9.706B	-$5.246B	-$11.97B
YoY Change	120.18%	230.87%	1141.55%
FINANCING ACTIVITIES
Cash Dividend Paid			$91.00M
YoY Change
Common Stock Issuance & Retirement, Net	$1.108B		$719.0M
YoY Change	388.11%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	9.688B	5.298B	$11.97B
YoY Change	121.55%	256.48%	1341.59%
NET CHANGE
Cash From Operating Activities	401.0M	306.0M	$128.0M
Cash From Investing Activities	-9.706B	-5.246B	-$11.97B
Cash From Financing Activities	9.688B	5.298B	$11.97B
Net Change In Cash	383.0M	358.0M	$128.0M
YoY Change	566.09%	-1125.79%	-231.28%
FREE CASH FLOW
Cash From Operating Activities	$401.0M	$306.0M	$128.0M
Capital Expenditures
Free Cash Flow
YoY Change

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	agnc	Average Reset Rate For Adjustable Rate Securities AverageResetRateForAdjustableRateSecurities	0.0276
	agnc	Average Underlying Index Rate On Agency Securities Based On Current Spot Rate AverageUnderlyingIndexRateOnAgencySecuritiesBasedOnCurrentSpotRate	0.0096
CY2010Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	8452000	USD
CY2011Q3	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	17385000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-65953000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-239508000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-68609000	USD
CY2011Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	42181000	USD
CY2010Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1561908000	USD
CY2011Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	4829065000	USD
CY2011Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	44000	USD
CY2011Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	38000	USD
CY2011Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	46000	USD
CY2010Q4	us-gaap	Assets Assets	14475829000	USD
CY2011Q3	us-gaap	Assets Assets	47039429000	USD
CY2011Q3	us-gaap	Available For Sale Securities Change In Net Unrealized Holding Gain Loss Net Of Tax AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLossNetOfTax	535439000	USD
CY2011Q2	us-gaap	Available For Sale Securities Change In Net Unrealized Holding Gain Loss Net Of Tax AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLossNetOfTax	318899000	USD
CY2011Q1	us-gaap	Available For Sale Securities Change In Net Unrealized Holding Gain Loss Net Of Tax AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLossNetOfTax	-39802000	USD
CY2011Q3	us-gaap	Available For Sale Securities Fair Value Disclosure AvailableForSaleSecuritiesFairValueDisclosure	41970419000	USD
CY2010Q4	us-gaap	Available For Sale Securities Fair Value Disclosure AvailableForSaleSecuritiesFairValueDisclosure	13510280000	USD
CY2010Q4	us-gaap	Available For Sale Securities Pledged As Collateral AvailableForSaleSecuritiesPledgedAsCollateral	12270909000	USD
CY2011Q3	us-gaap	Available For Sale Securities Pledged As Collateral AvailableForSaleSecuritiesPledgedAsCollateral	38860353000	USD
CY2011Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	984393000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	173258000	USD
CY2009Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	202803000	USD
CY2010Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	115266000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	811135000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-87537000	USD
CY2010Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.40
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	4.20
CY2011Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.40
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	4.20
CY2010Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2011Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2011Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	300000	shares
CY2010Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000	shares
CY2010Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	64856	shares
CY2011Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	183620	shares
CY2010Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	64856	shares
CY2011Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	183620	shares
CY2011Q3	us-gaap	Common Stock Value CommonStockValue	1836000	USD
CY2010Q4	us-gaap	Common Stock Value CommonStockValue	649000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	132111000	USD
CY2011Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	273632000	USD
CY2010Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	33068000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	672555000	USD
CY2010Q4	us-gaap	Derivative Assets DerivativeAssets	76593000	USD
CY2011Q3	us-gaap	Derivative Assets DerivativeAssets	54532000	USD
CY2010Q4	us-gaap	Derivative Average Remaining Maturity DerivativeAverageRemainingMaturity	3.1
CY2011Q3	us-gaap	Derivative Average Remaining Maturity DerivativeAverageRemainingMaturity	10.1
CY2011Q3	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	9268000	USD
CY2010Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	15301000	USD
CY2011Q3	us-gaap	Derivative Higher Remaining Maturity Range DerivativeHigherRemainingMaturityRange	three
CY2011Q3	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-70854000	USD
	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-40332000	USD
	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-140074000	USD
CY2010Q3	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-13261000	USD
CY2010Q3	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	-25000	USD
	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	-1552000	USD
	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	-340000	USD
CY2011Q3	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	-914000	USD
CY2010Q3	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	-39823000	USD
	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	-99428000	USD
	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	-706972000	USD
CY2011Q3	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	-512208000	USD
	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-317299000	USD
CY2010Q3	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-3311000	USD
CY2011Q3	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-198108000	USD
	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-13449000	USD
CY2010Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	78590000	USD
CY2011Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	792714000	USD
CY2011Q3	us-gaap	Derivative Lower Remaining Maturity Range DerivativeLowerRemainingMaturityRange	one
CY2011Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	180360000	USD
CY2011Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	135280000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	23231000	USD
CY2011Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	257068000	USD
CY2011Q3	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	257068000	USD
CY2010Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	90798000	USD
CY2010Q4	us-gaap	Financial Instruments Owned Mortgages Mortgage Backed And Asset Backed Securities At Fair Value FinancialInstrumentsOwnedMortgagesMortgageBackedAndAssetBackedSecuritiesAtFairValue	13510280000	USD
CY2011Q3	us-gaap	Financial Instruments Owned Mortgages Mortgage Backed And Asset Backed Securities At Fair Value FinancialInstrumentsOwnedMortgagesMortgageBackedAndAssetBackedSecuritiesAtFairValue	41970419000	USD
CY2010Q4	us-gaap	Financial Instruments Owned Us Government And Agency Obligations At Fair Value FinancialInstrumentsOwnedUSGovernmentAndAgencyObligationsAtFairValue	0	USD
CY2011Q3	us-gaap	Financial Instruments Owned Us Government And Agency Obligations At Fair Value FinancialInstrumentsOwnedUSGovernmentAndAgencyObligationsAtFairValue	300873000	USD
	us-gaap	Gain Loss On Sales Of Mortgage Backed Securities Mbs GainLossOnSalesOfMortgageBackedSecuritiesMBS	81558000	USD
CY2010Q3	us-gaap	Gain Loss On Sales Of Mortgage Backed Securities Mbs GainLossOnSalesOfMortgageBackedSecuritiesMBS	24565000	USD
CY2011Q3	us-gaap	Gain Loss On Sales Of Mortgage Backed Securities Mbs GainLossOnSalesOfMortgageBackedSecuritiesMBS	262768000	USD
	us-gaap	Gain Loss On Sales Of Mortgage Backed Securities Mbs GainLossOnSalesOfMortgageBackedSecuritiesMBS	360880000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	5394000	USD
CY2011Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	5845000	USD
CY2010Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	1926000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	12988000	USD
CY2011Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	251501000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	150286000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	562866000	USD
CY2010Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	60278000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	8933000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-812000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	19457000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	90595000	USD
	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	42834000	USD
	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	299113000	USD
CY2010Q3	us-gaap	Interest Expense InterestExpense	18531000	USD
	us-gaap	Interest Expense InterestExpense	194500000	USD
	us-gaap	Interest Expense InterestExpense	51389000	USD
CY2011Q3	us-gaap	Interest Expense InterestExpense	95036000	USD
CY2011Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	231718000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	561475000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	100597000	USD
CY2010Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	44069000	USD
CY2011Q3	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	326754000	USD
	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	151986000	USD
CY2010Q3	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	62600000	USD
	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	755975000	USD
CY2011Q3	us-gaap	Interest Rate Cash Flow Hedge Asset At Fair Value InterestRateCashFlowHedgeAssetAtFairValue	0	USD
CY2010Q4	us-gaap	Interest Rate Cash Flow Hedge Asset At Fair Value InterestRateCashFlowHedgeAssetAtFairValue	37722000	USD
CY2010Q4	us-gaap	Interest Rate Cash Flow Hedge Derivative At Fair Value Net InterestRateCashFlowHedgeDerivativeAtFairValueNet	37722000	USD
CY2010Q4	us-gaap	Interest Rate Cash Flow Hedge Liability At Fair Value InterestRateCashFlowHedgeLiabilityAtFairValue	37700000	USD
CY2011Q3	us-gaap	Interest Rate Derivative Instruments Not Designated As Hedging Instruments At Fair Value Net InterestRateDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAtFairValueNet	1460000	USD
CY2011Q3	us-gaap	Liabilities Liabilities	42099173000	USD
CY2010Q4	us-gaap	Liabilities Liabilities	12903765000	USD
CY2011Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	47039429000	USD
CY2010Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	14475829000	USD
	us-gaap	Loss On Cash Flow Hedge Ineffectiveness LossOnCashFlowHedgeIneffectiveness	300000	USD
	us-gaap	Loss On Cash Flow Hedge Ineffectiveness LossOnCashFlowHedgeIneffectiveness	-1600000	USD
CY2011Q3	us-gaap	Loss On Cash Flow Hedge Ineffectiveness LossOnCashFlowHedgeIneffectiveness	900000	USD
CY2010Q3	us-gaap	Loss On Cash Flow Hedge Ineffectiveness LossOnCashFlowHedgeIneffectiveness	0	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	4420099000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	29708129000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-4647824000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-29565844000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	140188000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	668850000	USD
CY2010Q3	us-gaap	Net Income Loss NetIncomeLoss	60028000	USD
	us-gaap	Net Income Loss NetIncomeLoss	150036000	USD
	us-gaap	Net Income Loss NetIncomeLoss	561766000	USD
CY2011Q3	us-gaap	Net Income Loss NetIncomeLoss	250401000	USD
CY2011Q1	us-gaap	Net Income Loss NetIncomeLoss	133543000	USD
CY2011Q2	us-gaap	Net Income Loss NetIncomeLoss	177822000	USD
	us-gaap	Noninterest Income NoninterestIncome	61878000	USD
CY2010Q3	us-gaap	Noninterest Income NoninterestIncome	20832000	USD
	us-gaap	Noninterest Income NoninterestIncome	50890000	USD
CY2011Q3	us-gaap	Noninterest Income NoninterestIncome	41262000	USD
CY2011Q3	us-gaap	Notional Amount Of Derivatives NotionalAmountOfDerivatives	1900000000	USD
CY2010Q3	us-gaap	Notional Amount Of Interest Rate Cash Flow Hedge Derivatives NotionalAmountOfInterestRateCashFlowHedgeDerivatives	4200000000	USD
CY2011Q3	us-gaap	Notional Amount Of Interest Rate Cash Flow Hedge Derivatives NotionalAmountOfInterestRateCashFlowHedgeDerivatives	0	USD
CY2010Q4	us-gaap	Notional Amount Of Interest Rate Derivatives NotionalAmountOfInterestRateDerivatives	6450000000	USD
CY2009Q4	us-gaap	Notional Amount Of Interest Rate Derivatives NotionalAmountOfInterestRateDerivatives	2050000000	USD
CY2011Q2	us-gaap	Notional Amount Of Interest Rate Derivatives NotionalAmountOfInterestRateDerivatives	22000000000	USD
CY2010Q2	us-gaap	Notional Amount Of Interest Rate Derivatives NotionalAmountOfInterestRateDerivatives	3000000000	USD
CY2011Q3	us-gaap	Notional Amount Of Interest Rate Derivatives NotionalAmountOfInterestRateDerivatives	200000000	USD
CY2011Q3	us-gaap	Notional Amount Of Other Derivatives Not Designated As Hedging Instruments NotionalAmountOfOtherDerivativesNotDesignatedAsHedgingInstruments	64595000	USD
CY2010Q3	us-gaap	Operating Expenses OperatingExpenses	4623000	USD
CY2011Q3	us-gaap	Operating Expenses OperatingExpenses	21479000	USD
	us-gaap	Operating Expenses OperatingExpenses	49499000	USD
	us-gaap	Operating Expenses OperatingExpenses	12189000	USD
CY2011Q3	us-gaap	Other Assets OtherAssets	148253000	USD
CY2010Q4	us-gaap	Other Assets OtherAssets	57658000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	3268216000	USD
CY2010Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-26960000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-17925000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	110789000	USD
	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Before Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTax	109096000	USD
	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Before Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTax	786581000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Before Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTax	786581000	USD
CY2010Q3	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Before Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTax	109096000	USD
CY2010Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-38620000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-703747000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-512208000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-91002000	USD
CY2011Q2	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-252664000	USD
CY2011Q1	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	61126000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	535439000	USD
CY2010Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	11660000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	73077000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	814536000	USD
CY2010Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	72927000	USD
CY2011Q3	us-gaap	Other Long Term Debt OtherLongTermDebt	56864000	USD
	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	0	USD
	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	0	USD
CY2011Q3	us-gaap	Payables To Broker Dealers And Clearing Organizations PayablesToBrokerDealersAndClearingOrganizations	1660276000	USD
CY2010Q4	us-gaap	Payables To Broker Dealers And Clearing Organizations PayablesToBrokerDealersAndClearingOrganizations	727374000	USD
	us-gaap	Payments For Proceeds From Derivative Instrument Financing Activities PaymentsForProceedsFromDerivativeInstrumentFinancingActivities	14092000	USD
	us-gaap	Payments For Proceeds From Derivative Instrument Financing Activities PaymentsForProceedsFromDerivativeInstrumentFinancingActivities	194081000	USD
	us-gaap	Payments For Securities Purchased Under Agreements To Resell PaymentsForSecuritiesPurchasedUnderAgreementsToResell	0	USD
	us-gaap	Payments For Securities Purchased Under Agreements To Resell PaymentsForSecuritiesPurchasedUnderAgreementsToResell	28841942000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	406438000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	118638000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	465149000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	4058828000	USD
	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	0	USD
	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	11918676000	USD
	us-gaap	Payments To Acquire Mortgage Backed Securities Mbs Categorized As Available For Sale PaymentsToAcquireMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale	56422788000	USD
	us-gaap	Payments To Acquire Mortgage Backed Securities Mbs Categorized As Available For Sale PaymentsToAcquireMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale	12301251000	USD
CY2011Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2010Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2011Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000	shares
CY2010Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000	shares
CY2010Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2011Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2011Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2010Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2010Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2011Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	373184000	USD
	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	80822000	USD
	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	0	USD
	us-gaap	Proceeds From Payments For Securities Purchased Under Agreements To Resell ProceedsFromPaymentsForSecuritiesPurchasedUnderAgreementsToResell	28615437000	USD
	us-gaap	Proceeds From Payments For Securities Purchased Under Agreements To Resell ProceedsFromPaymentsForSecuritiesPurchasedUnderAgreementsToResell	0	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	3791498000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	466775000	USD
	us-gaap	Proceeds From Sale Of Mortgage Backed Securities Mbs Categorized As Available For Sale ProceedsFromSaleOfMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale	6693342000	USD
	us-gaap	Proceeds From Sale Of Mortgage Backed Securities Mbs Categorized As Available For Sale ProceedsFromSaleOfMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale	24351207000	USD
CY2010	us-gaap	Proceeds From Securities Purchased Under Agreements To Resell ProceedsFromSecuritiesPurchasedUnderAgreementsToResell	244800000	USD
	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	4127565000	USD
	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	27161527000	USD
CY2011Q3	us-gaap	Receivables From Brokers Dealers And Clearing Organizations ReceivablesFromBrokersDealersAndClearingOrganizations	2698121000	USD
CY2010Q4	us-gaap	Receivables From Brokers Dealers And Clearing Organizations ReceivablesFromBrokersDealersAndClearingOrganizations	258984000	USD
	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	0	USD
	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	16063000	USD
CY2011Q3	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	375207000	USD
CY2010Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	76094000	USD
CY2011Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	67174000	USD
CY2010Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	78116000	USD
CY2011Q1	us-gaap	Sale Of Stock Price Per Share SaleOfStockPricePerShare	28.00
CY2011Q1	us-gaap	Sale Of Stock Price Per Share SaleOfStockPricePerShare	27.72
CY2011Q2	us-gaap	Sale Of Stock Price Per Share SaleOfStockPricePerShare	27.56
CY2011Q3	us-gaap	Secured Debt SecuredDebt	56900000	USD
CY2010Q4	us-gaap	Secured Debt SecuredDebt	72900000	USD
CY2010Q4	us-gaap	Securities Held As Collateral At Fair Value SecuritiesHeldAsCollateralAtFairValue	77900000	USD
CY2011Q3	us-gaap	Securities Held As Collateral At Fair Value SecuritiesHeldAsCollateralAtFairValue	60800000	USD
CY2010Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	11680092000	USD
CY2011Q3	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	38841619000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	128000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	68000	USD
CY2010Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0031
CY2011Q3	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0028
CY2011Q1	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	32200000	shares
	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	108790000	shares
CY2011Q1	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	26910000	shares
CY2011Q2	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	49680000	shares
CY2011Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1752812000	USD
CY2011Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	147000000	USD
CY2011Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1368404000	USD
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	2980331000	USD
CY2011Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	719250000	USD
CY2011Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1368848000	USD
CY2011Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	892233000	USD
CY2010Q4	us-gaap	Stockholders Equity StockholdersEquity	1572064000	USD
CY2011Q3	us-gaap	Stockholders Equity StockholdersEquity	4940256000	USD
CY2011Q1	us-gaap	Stockholders Equity StockholdersEquity	3344501000	USD
CY2011Q2	us-gaap	Stockholders Equity StockholdersEquity	4776646000	USD
CY2010Q3	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	900000	USD
	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	7800000	USD
CY2011Q3	agnc	Additions Of Interest Rate Cash Flow Hedge Derivatives AdditionsOfInterestRateCashFlowHedgeDerivatives	2100000000	USD
	agnc	Additions Of Interest Rate Cash Flow Hedge Derivatives AdditionsOfInterestRateCashFlowHedgeDerivatives	2150000000	USD
CY2010Q3	agnc	Additions Of Interest Rate Cash Flow Hedge Derivatives AdditionsOfInterestRateCashFlowHedgeDerivatives	1200000000	USD
	agnc	Additions Of Interest Rate Cash Flow Hedge Derivatives AdditionsOfInterestRateCashFlowHedgeDerivatives	17900000000	USD
CY2011Q3	agnc	Agency Securities Amortized Cost AgencySecuritiesAmortizedCost	41203908000	USD
CY2010Q4	agnc	Agency Securities Amortized Cost AgencySecuritiesAmortizedCost	13533896000	USD
CY2011Q3	agnc	Agency Securities Gross Unrealized Gain AgencySecuritiesGrossUnrealizedGain	813116000	USD
CY2010Q4	agnc	Agency Securities Gross Unrealized Gain AgencySecuritiesGrossUnrealizedGain	73409000	USD
CY2010	agnc	Agency Securities Pledged As Collateral Accrued Interest AgencySecuritiesPledgedAsCollateralAccruedInterest	43888000	USD
	agnc	Agency Securities Pledged As Collateral Accrued Interest AgencySecuritiesPledgedAsCollateralAccruedInterest	129394000	USD
CY2010	agnc	Agency Securities Pledged As Collateral Amortized Cost AgencySecuritiesPledgedAsCollateralAmortizedCost	12473350000	USD
	agnc	Agency Securities Pledged As Collateral Amortized Cost AgencySecuritiesPledgedAsCollateralAmortizedCost	40009803000	USD
CY2010Q4	agnc	Agency Securities Pledged As Collateral Amortized Cost Under Repurchase Agreements AgencySecuritiesPledgedAsCollateralAmortizedCostUnderRepurchaseAgreements	12434559000	USD
CY2011Q3	agnc	Agency Securities Pledged As Collateral Amortized Cost Under Repurchase Agreements AgencySecuritiesPledgedAsCollateralAmortizedCostUnderRepurchaseAgreements	40830723000	USD
CY2011Q3	agnc	Agency Securities Pledged As Collateral Gross Unrealized Loss AgencySecuritiesPledgedAsCollateralGrossUnrealizedLoss	46605000	USD
CY2010Q4	agnc	Agency Securities Pledged As Collateral Gross Unrealized Loss AgencySecuritiesPledgedAsCollateralGrossUnrealizedLoss	97025000	USD
	agnc	Amortization Of Interest Rate Swap Termination Fee AmortizationOfInterestRateSwapTerminationFee	0	USD
	agnc	Amortization Of Interest Rate Swap Termination Fee AmortizationOfInterestRateSwapTerminationFee	6278000	USD
CY2011Q3	agnc	Available For Sale Securities Weighted Average Life Amortized Cost AvailableForSaleSecuritiesWeightedAverageLifeAmortizedCost	40975612000	USD
CY2010Q4	agnc	Available For Sale Securities Weighted Average Life Amortized Cost AvailableForSaleSecuritiesWeightedAverageLifeAmortizedCost	13481492000	USD
CY2011Q3	agnc	Available For Sale Securities Weighted Average Life Coupon Rate AvailableForSaleSecuritiesWeightedAverageLifeCouponRate	0.0416
CY2010Q4	agnc	Available For Sale Securities Weighted Average Life Coupon Rate AvailableForSaleSecuritiesWeightedAverageLifeCouponRate	0.0449
CY2011Q3	agnc	Available For Sale Securities Weighted Average Life Fair Value AvailableForSaleSecuritiesWeightedAverageLifeFairValue	41762193000	USD
CY2010Q4	agnc	Available For Sale Securities Weighted Average Life Fair Value AvailableForSaleSecuritiesWeightedAverageLifeFairValue	13453541000	USD
	agnc	Average Margin Agency Securities AverageMarginAgencySecurities	0.0180
CY2010	agnc	Average Margin Agency Securities AverageMarginAgencySecurities	0.0182
CY2010	agnc	Average Reset Rate For Adjustable Rate Securities AverageResetRateForAdjustableRateSecurities	0.0276
CY2010Q3	agnc	Net Income Per Common Share Basic And Diluted NetIncomePerCommonShareBasicAndDiluted	1.69
	agnc	Net Income Per Common Share Basic And Diluted NetIncomePerCommonShareBasicAndDiluted	4.19
CY2010Q4	agnc	Obligation To Return Securities Borrowed Under Reverse Repurchase Agreements At Fair Value ObligationToReturnSecuritiesBorrowedUnderReverseRepurchaseAgreementsAtFairValue	245532000	USD
CY2011Q3	agnc	Obligation To Return Securities Borrowed Under Reverse Repurchase Agreements At Fair Value ObligationToReturnSecuritiesBorrowedUnderReverseRepurchaseAgreementsAtFairValue	473247000	USD
CY2010Q3	agnc	Other Realized Gain Loss On Derivative Instruments And Other Securities Net OtherRealizedGainLossOnDerivativeInstrumentsAndOtherSecuritiesNet	-736000	USD
	agnc	Other Realized Gain Loss On Derivative Instruments And Other Securities Net OtherRealizedGainLossOnDerivativeInstrumentsAndOtherSecuritiesNet	-222594000	USD
CY2011Q3	agnc	Other Realized Gain Loss On Derivative Instruments And Other Securities Net OtherRealizedGainLossOnDerivativeInstrumentsAndOtherSecuritiesNet	-173190000	USD
	agnc	Other Realized Gain Loss On Derivative Instruments And Other Securities Net OtherRealizedGainLossOnDerivativeInstrumentsAndOtherSecuritiesNet	-4214000	USD
	agnc	Prepayment Rate Of Remaining Life Of Investment Portfolio PrepaymentRateOfRemainingLifeOfInvestmentPortfolio	0.13
CY2010	agnc	Average Underlying Index Rate On Agency Securities Based On Current Spot Rate AverageUnderlyingIndexRateOnAgencySecuritiesBasedOnCurrentSpotRate	0.0094
CY2010	agnc	Collateralized Agency Securities Sold But Not Settled CollateralizedAgencySecuritiesSoldButNotSettled	244700000	USD
	agnc	Collateralized Agency Securities Sold But Not Settled CollateralizedAgencySecuritiesSoldButNotSettled	2690000000	USD
CY2011Q3	agnc	Excise Tax ExciseTax	1100000	USD
	agnc	Excise Tax ExciseTax	250000	USD
CY2010Q3	agnc	Excise Tax ExciseTax	250000	USD
	agnc	Excise Tax ExciseTax	1100000	USD
CY2011Q3	agnc	Fair Value Of Cmo Securities Directly Held FairValueOfCmoSecuritiesDirectlyHeld	454400000	USD
CY2010Q4	agnc	Fair Value Of Cmo Securities Directly Held FairValueOfCmoSecuritiesDirectlyHeld	458600000	USD
CY2010	agnc	Future Prepayment Rate Assumption Of Investment Portfolio FuturePrepaymentRateAssumptionOfInvestmentPortfolio	0.1200
	agnc	Future Prepayment Rate Assumption Of Investment Portfolio FuturePrepaymentRateAssumptionOfInvestmentPortfolio	0.13
	agnc	Gain On Interest Only Securities Remeasured At Fair Value Through Earnings GainOnInterestOnlySecuritiesRemeasuredAtFairValueThroughEarnings	24400000	USD
CY2011Q3	agnc	Gain On Interest Only Securities Remeasured At Fair Value Through Earnings GainOnInterestOnlySecuritiesRemeasuredAtFairValueThroughEarnings	27500000	USD
	agnc	Hedge De Designation Of Interest Rate Cash Flow Hedge Derivatives HedgeDeDesignationOfInterestRateCashFlowHedgeDerivatives	0	USD
	agnc	Hedge De Designation Of Interest Rate Cash Flow Hedge Derivatives HedgeDeDesignationOfInterestRateCashFlowHedgeDerivatives	23900000000	USD
CY2011Q3	agnc	Hedge De Designation Of Interest Rate Cash Flow Hedge Derivatives HedgeDeDesignationOfInterestRateCashFlowHedgeDerivatives	23900000000	USD
CY2010Q3	agnc	Hedge De Designation Of Interest Rate Cash Flow Hedge Derivatives HedgeDeDesignationOfInterestRateCashFlowHedgeDerivatives	0	USD
CY2010Q4	agnc	Interest Rate Derivative Designated As Hedging Instruments Average Fixed Pay Rate InterestRateDerivativeDesignatedAsHedgingInstrumentsAverageFixedPayRate	0.0163
CY2010Q4	agnc	Interest Rate Derivative Designated As Hedging Instruments Average Fixed Receive Rate InterestRateDerivativeDesignatedAsHedgingInstrumentsAverageFixedReceiveRate	0.0026
CY2011Q3	agnc	Interest Rate Derivative Not Designated As Hedging Instruments Average Fixed Pay Rate InterestRateDerivativeNotDesignatedAsHedgingInstrumentsAverageFixedPayRate	0.0200
CY2011Q3	agnc	Interest Rate Derivative Not Designated As Hedging Instruments Average Receive Rate InterestRateDerivativeNotDesignatedAsHedgingInstrumentsAverageReceiveRate	0.0037
	agnc	Interest Rate Swap Term InterestRateSwapTerm	5
	agnc	Loss On Derivative Instruments And Trading Securities LossOnDerivativeInstrumentsAndTradingSecurities	470000000	USD
	agnc	Loss On Derivative Instruments And Trading Securities Net LossOnDerivativeInstrumentsAndTradingSecuritiesNet	309990000	USD
	agnc	Loss On Derivative Instruments And Trading Securities Net LossOnDerivativeInstrumentsAndTradingSecuritiesNet	19680000	USD
CY2010Q3	agnc	Loss On Interest Only Securities Remeasured At Fair Value Through Earnings LossOnInterestOnlySecuritiesRemeasuredAtFairValueThroughEarnings	900000	USD
	agnc	Loss On Interest Only Securities Remeasured At Fair Value Through Earnings LossOnInterestOnlySecuritiesRemeasuredAtFairValueThroughEarnings	7800000	USD
CY2010Q3	agnc	Management Fees ManagementFees	2697000	USD
	agnc	Management Fees ManagementFees	6795000	USD
CY2011Q3	agnc	Management Fees ManagementFees	15634000	USD
	agnc	Management Fees ManagementFees	36511000	USD
	agnc	Net Income Per Common Share Basic And Diluted NetIncomePerCommonShareBasicAndDiluted	4.97
CY2011Q3	agnc	Net Income Per Common Share Basic And Diluted NetIncomePerCommonShareBasicAndDiluted	1.39
CY2010	agnc	Proceeds From Securitizations Of Agency Securities ProceedsFromSecuritizationsOfAgencySecurities	80800000	USD
	agnc	Proceeds From Us Treasury Securities Sold Not Yet Purchased ProceedsFromUSTreasurySecuritiesSoldNotYetPurchased	12053954000	USD
	agnc	Proceeds From Us Treasury Securities Sold Not Yet Purchased ProceedsFromUSTreasurySecuritiesSoldNotYetPurchased	0	USD
CY2010Q4	agnc	Principal Balance Of Securities Held As Collateral PrincipalBalanceOfSecuritiesHeldAsCollateral	73500000	USD
CY2011Q3	agnc	Principal Balance Of Securities Held As Collateral PrincipalBalanceOfSecuritiesHeldAsCollateral	57500000	USD
CY2011Q3	agnc	Principal Payments Receivable PrincipalPaymentsReceivable	33831000	USD
CY2010Q4	agnc	Principal Payments Receivable PrincipalPaymentsReceivable	75524000	USD
	agnc	Proceeds From Principal Collection Of Mortgage Backed Securities Categorized As Available For Sale ProceedsFromPrincipalCollectionOfMortgageBackedSecuritiesCategorizedAsAvailableForSale	3058375000	USD
	agnc	Proceeds From Principal Collection Of Mortgage Backed Securities Categorized As Available For Sale ProceedsFromPrincipalCollectionOfMortgageBackedSecuritiesCategorizedAsAvailableForSale	972551000	USD
CY2010Q3	agnc	Realized Gain Loss On Periodic Interest Settlements Of Interest Rate Swaps Net RealizedGainLossOnPeriodicInterestSettlementsOfInterestRateSwapsNet	0	USD
CY2011Q3	agnc	Realized Gain Loss On Periodic Interest Settlements Of Interest Rate Swaps Net RealizedGainLossOnPeriodicInterestSettlementsOfInterestRateSwapsNet	-1773000	USD
	agnc	Realized Gain Loss On Periodic Interest Settlements Of Interest Rate Swaps Net RealizedGainLossOnPeriodicInterestSettlementsOfInterestRateSwapsNet	-1773000	USD
	agnc	Realized Gain Loss On Periodic Interest Settlements Of Interest Rate Swaps Net RealizedGainLossOnPeriodicInterestSettlementsOfInterestRateSwapsNet	0	USD
	agnc	Realized Gain On Agency Securities RealizedGainOnAgencySecurities	3000000	USD
CY2010Q3	agnc	Realized Gain On Agency Securities RealizedGainOnAgencySecurities	1200000	USD
	agnc	Realized Gain On Agency Securities RealizedGainOnAgencySecurities	700000	USD
CY2011Q3	agnc	Realized Gain On Agency Securities RealizedGainOnAgencySecurities	3500000	USD
CY2011Q3	agnc	Receivable Under Reverse Repurchase Agreements ReceivableUnderReverseRepurchaseAgreements	473800000	USD
CY2010Q4	agnc	Receivable Under Reverse Repurchase Agreements ReceivableUnderReverseRepurchaseAgreements	247438000	USD
CY2011Q3	agnc	Repurchase Agreements Weighted Average Days To Maturity RepurchaseAgreementsWeightedAverageDaysToMaturity	30
CY2010Q4	agnc	Repurchase Agreements Weighted Average Days To Maturity RepurchaseAgreementsWeightedAverageDaysToMaturity	22
	agnc	Required Annual Distribution Of Taxable Net Income RequiredAnnualDistributionOfTaxableNetIncome	0.90
CY2010Q4	agnc	Risk Of Repurchase Agreement To Stockholders Equity RiskOfRepurchaseAgreementToStockholdersEquity	0.10
CY2011Q3	agnc	Risk Of Repurchase Agreement To Stockholders Equity RiskOfRepurchaseAgreementToStockholdersEquity	0.10
	agnc	Schedule Of Summary Of Interest Rate Swaption Agreements Outstanding In Future Pay Fixed Rate Textblock ScheduleOfSummaryOfInterestRateSwaptionAgreementsOutstandingInFuturePayFixedRateTextblock	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">As of </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">September 30, 2011</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">December 31, 2010</font><font style="font-family:inherit;font-size:10pt;">, we had interest rate swaption agreements outstanding consisting of options to enter into interest rate swaps in the future where we would pay a fixed rate (“payer swaptions”) as summarized in the tables below (dollars in thousands).</font><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:95.703125%;border-collapse:collapse;text-align:left;"><tr><td colspan="22" rowspan="1"></td></tr><tr><td width="25%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="7%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="8%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="10%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="10%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="6%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="11%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="9%" rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="9" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Option</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="10" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Underlying Swap</font></div></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Payer Swaptions</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Cost</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Fair</font></div><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Value</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Average</font></div><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Months to</font></div><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Expiration</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Notional</font></div><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Amount</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Pay</font></div><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Rate</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Average</font></div><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Receive</font></div><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Rate</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Average</font></div><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Term</font></div><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">(Years)</font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">As of September 30, 2011</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">45,570</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">4,456</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">8</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">3,250,000</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">3.59</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">%</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">1M LIBOR</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">6.9</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">As of December 31, 2010</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">4,596</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">16,766</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">4</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">850,000</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">2.28</font></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">%</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">1M LIBOR</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">5.6</font></div></td></tr></table></div></div></div>
CY2010Q4	agnc	Secured Debt Reverse Repurchase Agreements Fair Value SecuredDebtReverseRepurchaseAgreementsFairValue	245500000	USD
CY2010	agnc	Securitization Of Agency Securities Under Cost Basis SecuritizationOfAgencySecuritiesUnderCostBasis	85900000	USD
CY2011Q3	agnc	Securitized Cmo Securities SecuritizedCmoSecurities	458300000	USD
CY2010Q4	agnc	Securitized Cmo Securities SecuritizedCmoSecurities	463600000	USD
CY2011Q3	agnc	Spread Over Libor SpreadOverLibor	25 basis points
	agnc	Summary Of Continuous Unrealized Loss Positions Of Available For Sale Securitytext Block SummaryOfContinuousUnrealizedLossPositionsOfAvailableForSaleSecuritytextBlock	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The following table presents the gross unrealized loss and fair values of our available-for-sale agency securities by length of time that such securities have been in a continuous unrealized loss position as of </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">September 30, 2011</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">December 31, 2010</font><font style="font-family:inherit;font-size:10pt;"> (in thousands):</font></div><div style="line-height:120%;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;"> </font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:88.4765625%;border-collapse:collapse;text-align:left;"><tr><td colspan="25" rowspan="1"></td></tr><tr><td width="26%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="10%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="2%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="8%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="9%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="8%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="10%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="10%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="23" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Unrealized Loss Position For</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="7" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Less than 12 Months</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="7" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">12 Months or More</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="7" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Total</font></div></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Agency Securities Classified as</font></div><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Available-for-Sale</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;" rowspan="1"><div style="font-weight:bold;text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Estimated Fair</font></div><div style="font-weight:bold;text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Value</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;" rowspan="1"><div style="font-weight:bold;text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Unrealized</font></div><div style="font-weight:bold;text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Loss</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="font-weight:bold;text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Estimated</font></div><div style="font-weight:bold;text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Fair Value</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="font-weight:bold;text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Unrealized</font></div><div style="font-weight:bold;text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Loss</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="font-weight:bold;text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Estimated Fair</font></div><div style="font-weight:bold;text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Value</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="font-weight:bold;text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Unrealized</font></div><div style="font-weight:bold;text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Loss</font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">September 30, 2011</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">4,145,531</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(19,670</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">4,145,531</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(19,670</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">December 31, 2010</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">7,498,384</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(96,445</font></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">7,498,384</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(96,445</font></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td></tr></table></div></div></div>
	agnc	Terminations Of Interest Rate Cash Flow Hedge Derivatives TerminationsOfInterestRateCashFlowHedgeDerivatives	-450000000	USD
	agnc	Terminations Of Interest Rate Cash Flow Hedge Derivatives TerminationsOfInterestRateCashFlowHedgeDerivatives	0	USD
CY2010Q3	agnc	Terminations Of Interest Rate Cash Flow Hedge Derivatives TerminationsOfInterestRateCashFlowHedgeDerivatives	0	USD
CY2011Q3	agnc	Terminations Of Interest Rate Cash Flow Hedge Derivatives TerminationsOfInterestRateCashFlowHedgeDerivatives	-200000000	USD
CY2010	agnc	To Be Issued Securities Collateralized By Agency Securities Transferred ToBeIssuedSecuritiesCollateralizedByAgencySecuritiesTransferred	5100000	USD
CY2010Q4	agnc	Total Agency Securities TotalAgencySecurities	13510280000	USD
CY2011Q3	agnc	Total Agency Securities TotalAgencySecurities	41970419000	USD
CY2010	agnc	Total Fair Value Of Agency Securities Pledged And Accrued Interest TotalFairValueOfAgencySecuritiesPledgedAndAccruedInterest	12559825000	USD
	agnc	Total Fair Value Of Agency Securities Pledged And Accrued Interest TotalFairValueOfAgencySecuritiesPledgedAndAccruedInterest	41686568000	USD
	agnc	Transfers Between Hierarchy Levels TransfersBetweenHierarchyLevels	0
	agnc	Transfers Between Hierarchy Levels TransfersBetweenHierarchyLevels	0
	agnc	Unamortized Principal Balance Of Interest Only Strips UnamortizedPrincipalBalanceOfInterestOnlyStrips	1300000000	USD
CY2010	agnc	Unamortized Principal Balance Of Interest Only Strips UnamortizedPrincipalBalanceOfInterestOnlyStrips	500000000	USD
	agnc	Unamortized Principal Balance Of Principal Only Strips UnamortizedPrincipalBalanceOfPrincipalOnlyStrips	43000000	USD
	agnc	Unrealized Gain Loss On Derivative Instrument And Trading Securities UnrealizedGainLossOnDerivativeInstrumentAndTradingSecurities	-15466000	USD
	agnc	Unrealized Gain Loss On Derivative Instrument And Trading Securities UnrealizedGainLossOnDerivativeInstrumentAndTradingSecurities	-85623000	USD
CY2010Q3	agnc	Unrealized Gain Loss On Derivative Instrument And Trading Securities UnrealizedGainLossOnDerivativeInstrumentAndTradingSecurities	-2997000	USD
CY2011Q3	agnc	Unrealized Gain Loss On Derivative Instrument And Trading Securities UnrealizedGainLossOnDerivativeInstrumentAndTradingSecurities	-46543000	USD
	agnc	Unrealized Gain On Derivative Instrument And Trading Securities UnrealizedGainOnDerivativeInstrumentAndTradingSecurities	24400000	USD
CY2011Q3	agnc	Unrealized Gain On Derivative Instrument And Trading Securities UnrealizedGainOnDerivativeInstrumentAndTradingSecurities	27500000	USD
CY2010Q3	agnc	Unrealized Gain On Derivative Instrument And Trading Securities UnrealizedGainOnDerivativeInstrumentAndTradingSecurities	500000	USD
	agnc	Unrealized Gain On Derivative Instrument And Trading Securities UnrealizedGainOnDerivativeInstrumentAndTradingSecurities	1900000	USD
CY2010	agnc	Weighted Average Contractual Interest Rate Of Interest Only Strips WeightedAverageContractualInterestRateOfInterestOnlyStrips	0.0495
	agnc	Weighted Average Contractual Interest Rate Of Interest Only Strips WeightedAverageContractualInterestRateOfInterestOnlyStrips	0.0557
CY2010Q4	agnc	Weighted Average Coupon Rate WeightedAverageCouponRate	0.0470
CY2011Q3	agnc	Weighted Average Coupon Rate WeightedAverageCouponRate	0.0435
	agnc	Weighted Average Life Of Interest Only Securities WeightedAverageLifeOfInterestOnlySecurities	2.8	years
CY2010	agnc	Weighted Average Life Of Interest Only Securities WeightedAverageLifeOfInterestOnlySecurities	6.2	years
	agnc	Weighted Average Life Of Principal Only Securities WeightedAverageLifeOfPrincipalOnlySecurities	2.4	years
	agnc	Weighted Average Number Of Common Shares Outstanding Basic And Diluted WeightedAverageNumberOfCommonSharesOutstandingBasicAndDiluted	134163000	shares
	agnc	Weighted Average Number Of Common Shares Outstanding Basic And Diluted WeightedAverageNumberOfCommonSharesOutstandingBasicAndDiluted	30161000	shares
CY2010Q3	agnc	Weighted Average Number Of Common Shares Outstanding Basic And Diluted WeightedAverageNumberOfCommonSharesOutstandingBasicAndDiluted	35495000	shares
CY2011Q3	agnc	Weighted Average Number Of Common Shares Outstanding Basic And Diluted WeightedAverageNumberOfCommonSharesOutstandingBasicAndDiluted	180725000	shares
CY2010Q4	agnc	Weighted Average Yield Percentage WeightedAverageYieldPercentage	0.0331
CY2011Q3	agnc	Weighted Average Yield Percentage WeightedAverageYieldPercentage	0.0318
CY2010	agnc	Weighted Average Yield Percentage For Period WeightedAverageYieldPercentageForPeriod	0.0344
CY2011Q3	agnc	Weighted Average Yield Percentage For Period WeightedAverageYieldPercentageForPeriod	0.0314
	agnc	Weighted Average Yield Percentage For Period WeightedAverageYieldPercentageForPeriod	0.0325
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2011
	dei	Document Period End Date DocumentPeriodEndDate	2011-09-30
	dei	Document Type DocumentType	10-Q
	dei	Entity Central Index Key EntityCentralIndexKey	0001423689
CY2011Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	183619759	shares
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Registrant Name EntityRegistrantName	American Capital Agency Corp
	dei	Trading Symbol TradingSymbol	AGNC
CY2011Q3	invest	Derivative Notional Amount DerivativeNotionalAmount	-817215000	USD
CY2010Q4	invest	Derivative Notional Amount DerivativeNotionalAmount	-848897000	USD

Files In Submission

Name	View Source	Status
0001423689-11-000009-index-headers.html	Edgar Link	pending
0001423689-11-000009-index.html	Edgar Link	pending
0001423689-11-000009.txt	Edgar Link	pending
0001423689-11-000009-xbrl.zip	Edgar Link	pending
agnc-20110930.xml	Edgar Link	completed
agnc-20110930.xsd	Edgar Link	pending
agnc-20110930_cal.xml	Edgar Link	unprocessable
agnc-20110930_def.xml	Edgar Link	unprocessable
agnc-20110930_lab.xml	Edgar Link	unprocessable
agnc-20110930_pre.xml	Edgar Link	unprocessable
agnc10q93011.htm	Edgar Link	pending
agnc10q93011ex101.htm	Edgar Link	pending
agnc10q93011ex102.htm	Edgar Link	pending
agnc10q93011ex311.htm	Edgar Link	pending
agnc10q93011ex312.htm	Edgar Link	pending
agnc10q93011ex32.htm	Edgar Link	pending
agnclogo.jpg	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
R1.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$AGNC
AGNC Investment Corp. Stock $agnc

2011 Q4 Form 10-Q Financial Statement

#000142368911000009 Filed on November 07, 2011

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AGNC AGNC Investment Corp. Stock $agnc

2011 Q4 Form 10-Q Financial Statement

#000142368911000009 Filed on November 07, 2011

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AGNC
AGNC Investment Corp. Stock $agnc