Debt exchange additional cash consideration paid

No definition available.

Name:	amgn_DebtExchangeAdditionalCashConsideration
Namespace Prefix:	amgn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Schedule of Long-term Debt Instruments Exchanged

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4332-108586

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

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

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount, after accumulated amortization, of debt discount.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28541-108399

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-Publisher FASB
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-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

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- Details

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- Details

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- Details

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Financing arrangements (Debt exchange) (Details) - Notes [Member] - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2019	Sep. 30, 2020	May 31, 2020	Feb. 29, 2020
Schedule of Long-term Debt Instruments Exchanged [Line Items]
Face amount			$ 4,000	$ 5,000
6.375% notes due 2037 (6.375% 2037 Notes) [Member]
Schedule of Long-term Debt Instruments Exchanged [Line Items]
Debt Conversion, Converted Instrument, Amount	$ 74
Interest rate, stated percentage		6.375%
6.90% notes due 2038 (6.90% 2038 Notes) [Member]
Schedule of Long-term Debt Instruments Exchanged [Line Items]
Debt Conversion, Converted Instrument, Amount	37
Interest rate, stated percentage		6.90%
6.40% notes due 2039 (6.40% 2039 Notes) [Member]
Schedule of Long-term Debt Instruments Exchanged [Line Items]
Debt Conversion, Converted Instrument, Amount	133
Interest rate, stated percentage		6.40%
5.75% notes due 2040 (5.75% 2040 Notes) [Member]
Schedule of Long-term Debt Instruments Exchanged [Line Items]
Debt Conversion, Converted Instrument, Amount	39
Interest rate, stated percentage		5.75%
5.15% notes due 2041 (5.15% 2041 Notes) [Member]
Schedule of Long-term Debt Instruments Exchanged [Line Items]
Debt Conversion, Converted Instrument, Amount	245
Interest rate, stated percentage		5.15%
5.65% notes due 2042 (5.65% 2042 Notes) [Member]
Schedule of Long-term Debt Instruments Exchanged [Line Items]
Debt Conversion, Converted Instrument, Amount	72
Interest rate, stated percentage		5.65%
5.375% notes due 2043 (5.375% 2043 Notes) [Member]
Schedule of Long-term Debt Instruments Exchanged [Line Items]
Debt Conversion, Converted Instrument, Amount	$ 76
Interest rate, stated percentage		5.375%
Two Point Seven Seven Percent Notes Due Two Zero Five Three
Schedule of Long-term Debt Instruments Exchanged [Line Items]
Interest rate, stated percentage		2.77%
Face amount		$ 940
Debt Instrument, Unamortized Discount		264
debt exchange additional cash consideration		$ 85