Name:	amgn_AmountByWhichBorrowingCapacityUnderSyndicatedUnsecuredRevolvingCreditAgreementMayBeIncreasedUponOurRequestAtDiscretionOfBanks
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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Bridge credit agreement amount

No definition available.

Name:	amgn_BridgeCreditAgreementAmount
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Bridge credit agreement, initial amount

No definition available.

Name:	amgn_BridgeCreditAgreementInitialAmount
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Data Type:	xbrli:monetaryItemType
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Line of Credit Facility, Extension of Commitment Term

No definition available.

Name:	amgn_LineOfCreditFacilityExtensionOfCommitmentTerm
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Line of Credit Facility, Initial Commitment Term

No definition available.

Name:	amgn_LineOfCreditFacilityInitialCommitmentTerm
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Line of Credit Facility, Number Of Renewal Options

No definition available.

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Data Type:	xbrli:integerItemType
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Period Type:	duration

Maximum Borrowing Capacity Under Commercial Paper Program.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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Description of reference rate used for variable rate of debt instrument.

No definition available.

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Data Type:	xbrli:stringItemType
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_DebtInstrumentLineItems
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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

No definition available.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Data Type:	xbrli:monetaryItemType
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Namespace Prefix:
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