Debt Instrument, Redemption Period without Payment of Make Whole Amount

No definition available.

Name:	amgn_DebtInstrumentRedemptionPeriodWithoutPaymentOfMakeWholeAmount
Namespace Prefix:	amgn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of Prinicipal Amount of Notes that may be Paid Upon Occurance of Change in Control Triggering Event

+ References

No definition available.

+ Details

Name:	amgn_PercentageOfPrinicipalAmountOfNotesThatMayBePaidUponOccuranceOfChangeInControlTriggeringEvent
Namespace Prefix:	amgn_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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-Publisher FASB
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+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

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.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

Name:	us-gaap_ExtinguishmentOfDebtAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Financing arrangements (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Mar. 31, 2022
Debt Instrument [Line Items]
Extinguishment of debt	$ 297
Gain (loss) on extinguishment of debt	78
4.20% 2052 Notes [Member]
Debt Instrument [Line Items]
Face amount			$ 1,000
Notes
Debt Instrument [Line Items]
Face amount	$ 3,000	$ 3,000	$ 4,000
Notes \| 4.563% notes due 2048 (4.563% 2048 Notes) [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage	4.563%	4.563%
Effective interest rate	6.30%	6.30%
Notes \| 4.663% notes due 2051 (4.663% 2051 Notes) [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage	4.663%	4.663%
Effective interest rate	5.60%	5.60%
Notes \| Two Point Seven Seven Percent Notes Due Two Zero Five Three
Debt Instrument [Line Items]
Interest rate, stated percentage	2.77%	2.77%
Effective interest rate	5.20%	5.20%
Notes \| 3.00% 2029 Notes [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage	3.00%	3.00%	3.00%
Face amount			$ 750
Percentage of prinicipal amount of notes that may be paid upon occurance of change in control triggering event		101.00%
Notes \| 3.35% 2032 Notes [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage	3.35%	3.35%	3.35%
Face amount			$ 1,000
Percentage of prinicipal amount of notes that may be paid upon occurance of change in control triggering event		101.00%
Notes \| 4.20% 2052 Notes [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage	4.20%	4.20%	4.20%
Percentage of prinicipal amount of notes that may be paid upon occurance of change in control triggering event		101.00%
Notes \| 4.40% 2062 Notes [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage	4.40%	4.40%	4.40%
Face amount			$ 1,250
Percentage of prinicipal amount of notes that may be paid upon occurance of change in control triggering event		101.00%
Notes \| 4.05% 2029 Notes [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage	4.05%	4.05%
Face amount	$ 1,250	$ 1,250
Percentage of prinicipal amount of notes that may be paid upon occurance of change in control triggering event	101.00%
Notes \| 4.20% 2033 Notes [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage	4.20%	4.20%
Face amount	$ 750	$ 750
Percentage of prinicipal amount of notes that may be paid upon occurance of change in control triggering event	101.00%
Notes \| 4.875% 2053 Notes [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage	4.875%	4.875%
Face amount	$ 1,000	$ 1,000
Percentage of prinicipal amount of notes that may be paid upon occurance of change in control triggering event	101.00%
Notes \| 2.20% notes due 2027 (2.20% 2027 Notes) [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage	2.20%	2.20%
Notes \| 1.65% notes due 2028 (1.65% 2028 Notes) [Member}
Debt Instrument [Line Items]
Interest rate, stated percentage	1.65%	1.65%
Notes \| 2.00% notes due 2032 (2.00% 2032 Notes) [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage	2.00%	2.00%
Notes \| 2.80% notes due 2041 (2.80% 2041 Notes) [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage	2.80%	2.80%
Notes \| 3.00% notes due 2052 (3.00% 2052 Notes)
Debt Instrument [Line Items]
Interest rate, stated percentage	3.00%	3.00%
Minimum \| Debt Securities Payable
Debt Instrument [Line Items]
Redemption period without payment of make whole amount		2 months
Maximum \| Debt Securities Payable
Debt Instrument [Line Items]
Redemption period without payment of make whole amount		6 months