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AMGEN INC

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2.2.0.25truefalse06102 - Disclosure - Fair value measurements (Details Textuals)truefalsefalse1falsefalseUSDfalsefalse3/31/2011 USD ($) USD ($) / shares $BalanceAsOf_31Mar2011http://www.sec.gov/CIK0000318154instant2011-03-31T00:00:000001-01-01T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDEPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2falsefalseUSDfalsefalse12/31/2010 USD ($) USD ($) / shares $BalanceAsOf_31Dec2010http://www.sec.gov/CIK0000318154instant2010-12-31T00:00:000001-01-01T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDEPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0amgn_FairValueMeasurementTextualsAbstractamgnfalsenadurationFairValue Measurement.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringFairValue Measurement.falsefalse3false0us-gaap_NotionalAmountOfInterestRateFairValueHedgeDerivativesus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse36000000003600000000falsetruefalsefalsefalse2truefalsefalse36000000003600000000falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAggregate notional amount of all interest rate derivatives designated as hedging instruments in fair value hedges. Notional amount refers to the monetary amount specified in the interest rate derivative contract.No authoritative reference available.falsefalse4false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://amgen.com/role/fairvaluemeasurementsdetailstextuals1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalseUSDtruefalse{us-gaap_DerivativeByNatureAxis} : Foreign currency forward contracts [Member] 3/31/2011 USD ($) $BalanceAsOf_31Mar2011_Forward_Contracts_Memberhttp://www.sec.gov/CIK0000318154instant2011-03-31T00:00:000001-01-01T00:00:00falsefalseForeign currency forward contracts [Member]us-gaap_DerivativeByNatureAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ForwardContractsMemberus-gaap_DerivativeByNatureAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$4falsefalseUSDtruefalse{us-gaap_DerivativeByNatureAxis} : Foreign currency forward contracts [Member] 12/31/2010 USD ($) $BalanceAsOf_31Dec2010_Forward_Contracts_Memberhttp://www.sec.gov/CIK0000318154instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseForeign currency forward contracts [Member]us-gaap_DerivativeByNatureAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ForwardContractsMemberus-gaap_DerivativeByNatureAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalse5true0amgn_FairValueMeasurementTextualsAbstractamgnfalsenadurationFairValue Measurement.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringFairValue Measurement.falsefalse6false0us-gaap_NotionalAmountOfForeignCurrencyCashFlowHedgeDerivativesus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse34000000003400000000falsefalsefalsefalsefalse2truefalsefalse32000000003200000000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAggregate notional amount of all foreign currency derivatives designated as hedging instruments in cash flow hedges. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.No authoritative reference available.falsefalse7false0us-gaap_NotionalAmountOfForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse788000000788000000falsefalsefalsefalsefalse2truefalsefalse670000000670000000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAggregate notional amount of all foreign currency derivatives not designated as hedging instruments. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.No authoritative reference available.falsefalse8false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://amgen.com/role/fairvaluemeasurementsdetailstextuals1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse5falsefalseUSDtruefalse{us-gaap_DerivativeByNatureAxis} : Foreign currency option contracts [Member] 3/31/2011 USD ($) $BalanceAsOf_31Mar2011_Option_Member_2http://www.sec.gov/CIK0000318154instant2011-03-31T00:00:000001-01-01T00:00:00falsefalseForeign currency option contracts [Member]us-gaap_DerivativeByNatureAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_OptionMemberus-gaap_DerivativeByNatureAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$6falsefalseUSDtruefalse{us-gaap_DerivativeByNatureAxis} : Foreign currency option contracts [Member] 12/31/2010 USD ($) $BalanceAsOf_31Dec2010_Option_Member_2http://www.sec.gov/CIK0000318154instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseForeign currency option contracts [Member]us-gaap_DerivativeByNatureAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_OptionMemberus-gaap_DerivativeByNatureAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalse9true0amgn_FairValueMeasurementTextualsAbstractamgnfalsenadurationFairValue Measurement.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringFairValue Measurement.falsefalse10false0us-gaap_NotionalAmountOfForeignCurrencyCashFlowHedgeDerivativesus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse300000000300000000falsetruefalsefalsefalse2truefalsefalse398000000398000000falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAggregate notional amount of all foreign currency derivatives designated as hedging instruments in cash flow hedges. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.No authoritative reference available.falsefalse29Fair value measurements (Details Textuals) (USD $)NoRoundingUnKnownUnKnownUnKnownfalsetrue