Condensed Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues:
Total revenues	$ 6,903	$ 6,652	$ 19,994	$ 19,484
Operating expenses:
Cost of sales	1,806	1,588	5,339	4,659
Research and development	1,079	1,112	3,250	3,110
Selling, general and administrative	1,353	1,287	3,905	3,842
Other	644	5	874	537
Total operating expenses	4,882	3,992	13,368	12,148
Operating income	2,021	2,660	6,626	7,336
Interest expense, net	(759)	(368)	(2,054)	(991)
Other income (expense), net	685	100	2,431	(747)
Income before income taxes	1,947	2,392	7,003	5,598
Provision for income taxes	217	249	1,053	662
Net income	$ 1,730	$ 2,143	$ 5,950	$ 4,936
Earnings per share:
Basic (in usd per share)	$ 3.23	$ 4.01	$ 11.12	$ 9.16
Diluted (in usd per share)	$ 3.22	$ 3.98	$ 11.06	$ 9.11
Shares used in calculation of earnings per share:
Basic (in shares)	535	535	535	539
Diluted (in shares)	538	538	538	542
Product sales
Revenues:
Total revenues	$ 6,548	$ 6,237	$ 19,077	$ 18,249
Other revenues
Revenues:
Total revenues	$ 355	$ 415	$ 917	$ 1,235

Other General Expense (Income), Other Adjustments

No definition available.

Name:	amgn_OtherGeneralExpenseIncomeOtherAdjustments
Namespace Prefix:	amgn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.