0000318154-26-000114 | 11-K | XBRL Viewer

Party-in-Interest Transactions	12 Months Ended
Dec. 31, 2025
EBP 001
EBP, Related Party and Party-in-Interest Transactions [Line Items]
Party-in-Interest Transactions	Party-in-Interest Transactions Parties-in-interest are certain entities defined under Department of Labor regulations, including Amgen, and other parties that provide services to the Plan, such as the trustees, custodians and investment managers. The Plan pays the custodians certain administrative and investment management fees, and the Company pays certain administrative fees on behalf of the Plan. The Plan invests in collective trust funds managed by Northern, certain of the Plan’s investment managers and other third parties and may invest in securities of entities that are parties-in-interest. The Plan also invests in shares of common stock of Amgen and receives dividends on those shares. Notes receivable from participants are also considered party-in-interest transactions.

Employee Benefit Plan, Description of Plan (Details)	12 Months Ended
Employee Benefit Plan, Description of Plan (Details)	Dec. 31, 2025 USD ($) year class Loan
EBP, Description of Plan [Line Items]
Number of asset classes \| class	7
EBP 001
EBP, Description of Plan [Line Items]
Maximum annual compensation to total compensation, percentage	30.00%
Automatic deferral rate, annual increase	1.00%
Participant compensation matched, non-elective, percentage	4.00%
Participant compensation matched, percentage	5.00%
Maximum contribution to Amgen stock, percentage	20.00%
Vesting period	3 years
Maximum vesting age \| year	65
Break in service period	5 years
Involuntary cash-out limit	$ 1,000
Maximum number of loans outstanding \| Loan	2
Maximum borrowing, to total account, percentage	50.00%
Maximum borrowing amount	$ 50,000
Basis spread on variable rate	1.00%
Primary residence, borrowing term	20 years
EBP 001 \| Minimum
EBP, Description of Plan [Line Items]
Automatic deferral rate	5.00%
General loan, borrowing term	1 year
EBP 001 \| Maximum
EBP, Description of Plan [Line Items]
Automatic deferral rate	10.00%
General loan, borrowing term	5 years

Schedule H, line 4i – Schedule of Assets (Held at End of Year)

12 Months Ended

Dec. 31, 2025

EBP 001

EBP, Schedule of Asset Held for Investment [Line Items]

Schedule H, line 4i – Schedule of Assets (Held at End of Year)

Supplemental Schedule

Retirement and Savings Plan for Amgen Manufacturing Limited LLC

EIN: 98-0210484 Plan: #001

As of December 31, 2025

Schedule H, line 4i – Schedule of Assets (Held at End of Year)

Identity of Issue

Description of Investment

Current Value

Amgen stock*

Employer Securities

126,196,526

Capital Preservation Asset Class:

Wells Fargo Stable Value Fund W*

Collective Trust Fund

104,631,966

NT Collective Short Term Investment Fund*

Collective Trust Fund

8,236,750

Total Capital Preservation Asset Class

112,868,716

Fixed Income Active Asset Class:

Wellington Core Bond Plus Portfolio Collective Investment Trust II*

Collective Trust Fund

19,786,144

FIAM Group Trust For Employees Benefit Plan Core Plus Commingled Pool Class W*

Collective Trust Fund

19,684,534

BBH Collective Investment Series Trust Series Fund Income Class 1*

Collective Trust Fund

19,673,510

NT Collective Aggregate Bond Index Fund / Non Lending*

Collective Trust Fund

9,168,289

Total Fixed Income Active Asset Class

68,312,477

Fixed Income Index Asset Class:

NT Collective Aggregate Bond Index Fund / Non Lending*

Collective Trust Fund

119,759,185

Total Fixed Income Index Asset Class

119,759,185

U.S. Equity Active Asset Class:

Nuveen Winslow Large Capital Growth Fund Class C*

Collective Trust Fund

19,602,868

Blackrock Instituitional Trust Company Investment Funds Russell 3000 Alpha Tilts Fund F*

Collective Trust Fund

15,451,387

Boston Partners CIT Large Capital Value Class E*

Collective Trust Fund

13,991,029

NT Collective Russell 3000 Index Fund / Non Lending*

Collective Trust Fund

2,388,133

Clean Harbors Inc.

Common and Preferred Stock

324,286

Coherent Corporation

Common and Preferred Stock

302,326

Ametek Inc.

Common and Preferred Stock

288,666

SS&C Technologies Holdings Inc.

Common and Preferred Stock

288,136

Waste Connections Inc.

Common and Preferred Stock

278,121

Entegris Inc.

Common and Preferred Stock

262,523

BWX Technologies Inc.

Common and Preferred Stock

248,371

NT Collective Short Term Investment Fund*

Collective Trust Fund

214,623

Huntington Bancshares Inc.

Common and Preferred Stock

207,593

Woodward Inc.

Common and Preferred Stock

201,950

UGI Corporation

Common and Preferred Stock

199,090

Rentokil Initial PLC

Common and Preferred Stock

184,361

Charles River Laboratories International Inc.

Common and Preferred Stock

173,348

Bio-Techne Corporation

Common and Preferred Stock

171,196

Keysight Technologies Inc.

Common and Preferred Stock

168,241

Amphenol Corporation Class A

Common and Preferred Stock

167,168

Identity of Issue

Description of Investment

Current Value

Ingredion Inc.

Common and Preferred Stock

165,831

Halozyme Therapeutics Inc.

Common and Preferred Stock

165,625

Henry Schein Inc.

Common and Preferred Stock

161,666

Brown & Brown Inc.

Common and Preferred Stock

159,639

Heico Corporation Class A

Common and Preferred Stock

151,458

Dolby Laboratories Inc.

Common and Preferred Stock

144,302

Shift4 Payments Inc. Class A

Common and Preferred Stock

139,856

IDEX Corporation

Common and Preferred Stock

135,412

STERIS plc

Common and Preferred Stock

133,859

LKQ Corporation

Common and Preferred Stock

120,800

Power Integrations Inc.

Common and Preferred Stock

119,059

Prosperity Bancshares Inc.

Common and Preferred Stock

108,434

WEX Inc.

Common and Preferred Stock

107,117

Hexcel Corporation

Common and Preferred Stock

104,199

HealthEquity Inc.

Common and Preferred Stock

102,786

Casella Waste Systems Inc. Class A

Common and Preferred Stock

97,156

Mid-American Apartment Communities Inc.

Common and Preferred Stock

96,404

Allegion PLC

Common and Preferred Stock

95,214

Cabot Corporation

Common and Preferred Stock

92,456

Graco Inc.

Common and Preferred Stock

88,774

RBC Bearings Inc.

Common and Preferred Stock

79,821

Procore Technologies Inc.

Common and Preferred Stock

78,196

First American Financial Corporation

Common and Preferred Stock

75,940

Copart Inc.

Common and Preferred Stock

74,033

Ensign Group Inc.

Common and Preferred Stock

71,945

Federal Signal Corporation

Common and Preferred Stock

64,611

National Retail Properties Inc.

Common and Preferred Stock

64,359

Fabrinet Company

Common and Preferred Stock

64,194

Nova Measuring Instruments

Common and Preferred Stock

63,708

Medpace Holdings Inc.

Common and Preferred Stock

63,466

Bank Ozk

Common and Preferred Stock

59,320

EnPro Inc.

Common and Preferred Stock

57,601

Moelis & Company Class A

Common and Preferred Stock

54,717

SiteOne Landscape Supply Inc.

Common and Preferred Stock

54,557

Paymentus Holdings Inc. Class A

Common and Preferred Stock

52,787

Standex International Corporation

Common and Preferred Stock

50,409

Kadant Inc.

Common and Preferred Stock

50,164

Ollies Bargain Outlet Holdings Inc.

Common and Preferred Stock

46,913

Balchem Corporation

Common and Preferred Stock

46,621

Loar Holdings Inc.

Common and Preferred Stock

46,376

Camtek Limited

Common and Preferred Stock

46,154

CSW Industrials Inc.

Common and Preferred Stock

45,497

Saia Inc.

Common and Preferred Stock

43,754

Everus Construction Group Inc.

Common and Preferred Stock

43,721

Modine Manufacturing Company

Common and Preferred Stock

43,257

CCC Intelligent Solutions Holdings Inc.

Common and Preferred Stock

42,509

ICF International, Inc.

Common and Preferred Stock

42,053

Global-E Online Limited

Common and Preferred Stock

41,669

Markel Corporation Holding Company

Common and Preferred Stock

40,843

Hamilton Lane Inc. Class A

Common and Preferred Stock

40,293

Five Below Inc.

Common and Preferred Stock

39,744

Identity of Issue

Description of Investment

Current Value

Clearwater Analytics Holdings Inc. Class A

Common and Preferred Stock

37,410

Guidewire Software Inc.

Common and Preferred Stock

36,986

XPEL Inc.

Common and Preferred Stock

35,236

Certara Inc.

Common and Preferred Stock

30,624

Wingstop Inc.

Common and Preferred Stock

29,811

RLI Corporation

Common and Preferred Stock

29,559

Arhaus Inc. Class A

Common and Preferred Stock

29,101

Valvoline Inc.

Common and Preferred Stock

28,915

Q2 Holdings Inc.

Common and Preferred Stock

28,215

UFP Industries Inc.

Common and Preferred Stock

27,224

Novanta Inc.

Common and Preferred Stock

26,416

Freshpet Inc.

Common and Preferred Stock

25,712

Morningstar Inc.

Common and Preferred Stock

25,208

Floor & Decor Holdings Inc.

Common and Preferred Stock

23,869

Goosehead Insurance Inc. Class A

Common and Preferred Stock

22,832

Trex Company Inc.

Common and Preferred Stock

21,855

AAON Inc.

Common and Preferred Stock

20,969

Cohen & Steers Inc.

Common and Preferred Stock

19,776

Bellring Brands Inc.

Common and Preferred Stock

16,893

Vita Coco Company Inc.

Common and Preferred Stock

8,694

Pool Corporation

Common and Preferred Stock

5,719

Total U.S. Equity Active Asset Class

59,823,719

U.S. Equity Index Asset Class:

NT Collective Russell 3000 Index Fund / Non Lending*

Collective Trust Fund

226,917,206

Total U.S. Equity Index Asset Class

226,917,206

International Equity Active Asset Class:

Dodge & Cox International Stock Fund

Mutual Fund

27,612,784

Mawer International Equity Collective Investment Trust Class B*

Collective Trust Fund

27,322,286

Great Grey Trust Company
GQG Partners International Equity
CIT Class C*

Collective Trust Fund

26,952,254

Wilmington Trust Collective Investment Trust / Jennison International Equity Opportunities CIT Class J*

Collective Trust Fund

26,817,997

Mondrian Master CIT Focused All Countries World ex-US Equity*

Collective Trust Fund

26,740,527

NT Collective MSCI All Country World Index (ACWI) ex/US Index Fund / Non Lending*

Collective Trust Fund

4,438,045

Total International Equity Active Asset Class

139,883,893

International Equity Index Asset Class:

NT Collective MSCI All Country World Index (ACWI) ex/US Index Fund / Non Lending*

Collective Trust Fund

30,357,741

Total International Equity Index Asset Class

30,357,741

Participant Self-Directed Accounts

Various Investments

26,713,652

Notes Receivable from Participants*

Interest Rate 4.25% - 9.50%

18,631,683

Identity of Issue

Description of Investment

Current Value

Other

Tax Reclaims

Cash and Cash Equivalents

284,750

ML Vanguard Federal Money Market Forfeiture / Settlement*

Cash and Cash Equivalents

54,661

NT Collective Short Term Investment Fund*

Collective Trust Fund

2,258

Total Other

341,669

Grand Total

929,806,467

* Indicates party-in-interest

Reconciliation of Financial Statements to the Form 5500 (Details) - EBP 001 - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
EBP, Form 5500 Caption, Net Assets [Abstract]
Net assets available for benefits per the financial statements	$ 930,624,316	$ 780,088,151
Amounts allocated to withdrawing participants	0	(9,000)
Deemed loans	(790,729)	(887,701)
Net assets per the Form 5500	929,833,587	779,191,450
EBP, Form 5500 Caption [Abstract]
Benefits paid	(25,178,261)
Investment and administrative fees	(445,710)
Total expenses per the financial statements	25,623,971
Amounts allocated to withdrawing participants at December 31, 2024	9,000
Amounts allocated to withdrawing participants at December 31, 2025	0
Amounts allocated to withdrawing participants at December 31, 2025	0	$ (9,000)
Deemed loans at December 31, 2024	887,701
Deemed loans at December 31, 2025	(790,729)
Total expenses per the Form 5500	$ (25,517,999)

Statements of Net Assets Available for Benefits - EBP 001 - USD ($)	Dec. 31, 2025	Dec. 31, 2024
Assets
Investments at fair value	$ 911,174,783	$ 762,010,202
Notes receivable from participants	19,422,412	18,107,898
Other – principally due from broker	235,835	302,276
Total assets	930,833,030	780,420,376
Liabilities
Other – principally due to broker	208,714	332,225
Total liabilities	208,714	332,225
Net assets available for benefits	$ 930,624,316	$ 780,088,151

Employee Benefit Plan, Description of Plan	12 Months Ended
Employee Benefit Plan, Description of Plan	Dec. 31, 2025
EBP 001
EBP, Description of Plan [Line Items]
EBP, Description of Plan	Description of the Plan The following is a description of the Retirement and Savings Plan for Amgen Manufacturing Limited LLC (the Plan). The description below provides only general information, and accordingly, participants should refer to the Plan document for a more complete description of the Plan’s provisions. General The Plan was established effective January 1, 2002, was amended and restated effective January 1, 2017, and was subsequently amended with the most recent amendment effective on or prior to December 31, 2025 adopted on June 7, 2024. The Plan was subsequently amended and restated effective January 1, 2026. The Plan is a defined contribution plan covering substantially all Puerto Rico resident employees of Amgen Manufacturing Limited LLC (the Company), a wholly owned subsidiary of Amgen Inc. (Amgen). The Plan is intended to qualify under Section 1081.01 of the Puerto Rico Internal Revenue Code of 2011, as amended (the PR Code) (see Note 4, Income Tax Status) and section 407(d)(3)(A) of the Employee Retirement Income Security Act of 1974 (ERISA). Contributions Subject to certain limitations (as defined in the Plan), participants may elect to contribute up to 30% of their eligible compensation in pre-tax contributions and after-tax contributions or a combination of these types of contributions (together, Individual Contributions). A participant’s pre-tax contributions are subject to the PR Code and Plan limitations and could not exceed $15,000 in 2025. Participants may elect to contribute after-tax contributions beginning January 1 of the year following the year the participant was hired. Participant after-tax contributions are subject to the PR Code and Plan limitations and could not exceed $1,500 in 2025. Unless an employee has voluntarily enrolled in the Plan or has declined to participate in the Plan within the first 30 days of employment, all newly eligible participants are automatically enrolled in the Plan, and contributions equal to 5% of their eligible compensation are withheld and contributed to the Plan as pre-tax contributions; such contributions are automatically increased by 1% per year until their contributions reach 10% of their eligible compensation. Participants may elect to adjust, cease or resume their Individual Contributions at any time. Participants who are at least age 50 by the close of the Plan year may also elect to make certain additional pre-tax Individual Contributions, referred to as catch-up contributions, that are subject to the PR Code and Plan limitations and could not exceed $1,500 in 2025. Participants may also contribute pre-tax and after-tax amounts representing distributions from certain other retirement plans qualified in Puerto Rico, referred to as rollover contributions (as defined in the Plan). Each pay period, the Company makes a non-elective contribution for all eligible participants, whether or not they have elected to make Individual Contributions to the Plan, equal to 4% of each participant’s eligible compensation up to a maximum of $14,000 in 2025 (Core Contributions). In addition, the Company makes a contribution equal to amounts contributed by the participant as pre-tax contributions, including catch-up contributions, of up to 5% of eligible compensation (Matching Contributions). Matching Contributions could not exceed $15,000 in 2025 (or $16,500 for catch-up eligible participants). Participants select the investments in which their Individual Contributions, including their Core Contributions and Matching Contributions (collectively, Company Contributions), are to be invested, electing among various alternatives, including Amgen common stock (Amgen stock). Participants may direct a maximum of 20% of contributions to be invested in Amgen stock. In addition, participants may transfer amounts among the investment options at any time, subject to certain limitations. Notwithstanding the foregoing, if 20% or more of the value of a participant’s Plan account is invested in Amgen stock, the Plan document provides that no transfers from other investment options can be made to invest in Amgen stock. The accounts of participants who have not made an investment election are allocated to investments under a qualified default investment alternative, which is intended to be compliant with ERISA regulations. At any time, participants may elect to alter the investments in their accounts made under a qualified default investment alternative. Vesting and Forfeitures Participants are immediately vested with respect to their Individual Contributions and Matching Contributions and earnings and losses (hereafter referred to as earnings) thereon. Participants hired prior to January 1, 2020, are also immediately vested with respect to their Core Contributions and earnings thereon. Participants hired on or after January 1, 2020, vest in full with respect to their Core Contributions and earnings thereon after three years of service, as defined by the terms of the Plan, or upon reaching age 65 while employed by the Company, if earlier. If a participant ceases to be an employee before fully vesting in their account, the non-vested Core Contributions and earnings thereon of the participant’s account will be treated as a forfeiture, as defined by the terms of the Plan, on the earlier of (a) the date the participant incurs a five-year break in service, as defined by the terms of the Plan or, (b) the date the participant receives a distribution of the entire vested portion of their account. Forfeitures are applied, in accordance with Plan provisions, to reduce Core or Matching Contributions, to reinstate forfeitures of reemployed participants, to reinstate the accounts of lost participants or beneficiaries (as defined in the Plan), to reduce Plan administrative expenses for the current or immediately following Plan year, and/or for any other purpose permitted under federal regulations or other applicable authority. Participant Accounts Each participant’s account is credited with: (a) the participant’s Individual Contributions; (b) an allocation of Company Contributions; and (c) earnings. The benefit to which a participant is entitled is the benefit that can be provided from the participant’s account. Plan Investments Plan participants can invest in seven different asset classes as well as Amgen stock or can actively manage their account under a self-directed brokerage arrangement in which a wider array of investment options are available. The value of an investment in an asset class is determined by its underlying investment vehicles, which may include one or more of the following: mutual funds, collective trust funds and portfolios, which are separately managed exclusively for the benefit of Plan participants and their beneficiaries (separately managed portfolios). The separately managed portfolios are composed primarily of investments in publicly traded common and preferred stocks. The asset classes are designed to provide participants with choices among a variety of investment objectives. Payments of Benefits Subject to Plan limitations, upon termination of employment, including termination due to disability (as defined in the Plan) or retirement, a participant may elect to receive a full or partial distribution of his or her account balance in: (a) a single payment in cash; (b) a single distribution in full shares of Amgen stock (with any fractional shares paid in cash); (c) a single distribution paid in a combination of cash and full shares of Amgen stock; or (d) a rollover distribution to an eligible retirement plan. Participants may also elect to maintain their account balance in the Plan subsequent to termination of employment, provided that their account balance is greater than $1,000. If a participant dies before receiving the value of his or her account balance, the participant’s beneficiary may elect to receive the distribution of remaining funds from among the alternatives described above, subject to certain Plan limitations. No withdrawals may be made from the Plan while a participant continues to be employed by the Company except in certain circumstances including, but not limited to, financial hardship, disability and attainment of age 59 1/2. Notes Receivable from Participants Subject to certain restrictions, a participant can have up to two loans outstanding at any one time from his or her Plan account with a combined maximum loan amount that may not exceed the lesser of: (a) 50% of the participant’s account balance or (b) $50,000 less certain adjustments, as applicable (as defined in the Plan). A participant’s loan is secured by his or her Plan account balance. Loans bear interest at fixed rates which, until changed by the Company, are based on the prime rate plus one percentage point as published in The Wall Street Journal, determined as of the last day of the calendar quarter preceding origination or such other rate as may be required by law. Loans are generally payable in installments over periods ranging from one to five years, unless the loan is used to acquire a principal residence for which the term of the loan may be up to 20 years. Principal and interest payments are allocated to the participant’s account. Plan Termination Although it has not expressed any intent to do so, the Company has the right under the Plan to terminate the Plan subject to the provisions of ERISA. Upon termination, participants would become fully vested in Core Contributions and receive distributions of their account balances. Trustee and Custodians Banco Popular de Puerto Rico is the Plan’s trustee. Bank of America, N.A. is the Plan’s custodian with respect to the self-directed brokerage arrangement and the Amgen common stock fund. The Northern Trust Company, NA (Northern) is the Plan’s custodian with respect to the asset classes.

Fair Value Measurements (Details) - EBP 001 - USD ($)	Dec. 31, 2025	Dec. 31, 2024
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	$ 911,174,783	$ 762,010,202
Total
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	911,174,783	762,010,202
Total \| Amgen stock
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	126,196,526	100,973,506
Total \| Cash and cash equivalents
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	339,411	43,702
Total \| Collective trust funds
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	722,136,732	577,297,941
Total \| Common and preferred stocks
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	8,175,678	47,870,415
Total \| Mutual funds
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	27,612,784	16,198,902
Total \| Self-directed brokerage accounts
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	26,713,652	19,625,736
Quoted prices in active markets for identical assets (Level 1)
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	189,038,051	184,712,261
Quoted prices in active markets for identical assets (Level 1) \| Amgen stock
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	126,196,526	100,973,506
Quoted prices in active markets for identical assets (Level 1) \| Cash and cash equivalents
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	339,411	43,702
Quoted prices in active markets for identical assets (Level 1) \| Collective trust funds
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	0	0
Quoted prices in active markets for identical assets (Level 1) \| Common and preferred stocks
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	8,175,678	47,870,415
Quoted prices in active markets for identical assets (Level 1) \| Mutual funds
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	27,612,784	16,198,902
Quoted prices in active markets for identical assets (Level 1) \| Self-directed brokerage accounts
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	26,713,652	19,625,736
Significant other observable inputs (Level 2)
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	722,136,732	577,297,941
Significant other observable inputs (Level 2) \| Amgen stock
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	0	0
Significant other observable inputs (Level 2) \| Cash and cash equivalents
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	0	0
Significant other observable inputs (Level 2) \| Collective trust funds
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	722,136,732	577,297,941
Significant other observable inputs (Level 2) \| Common and preferred stocks
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	0	0
Significant other observable inputs (Level 2) \| Mutual funds
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	0	0
Significant other observable inputs (Level 2) \| Self-directed brokerage accounts
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	0	0
Significant unobservable inputs (Level 3)
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	0	0
Significant unobservable inputs (Level 3) \| Amgen stock
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	0	0
Significant unobservable inputs (Level 3) \| Cash and cash equivalents
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	0	0
Significant unobservable inputs (Level 3) \| Collective trust funds
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	0	0
Significant unobservable inputs (Level 3) \| Common and preferred stocks
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	0	0
Significant unobservable inputs (Level 3) \| Mutual funds
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	0	0
Significant unobservable inputs (Level 3) \| Self-directed brokerage accounts
EBP, Investment, Fair Value and NAV [Line Items]
Total investments at fair value	$ 0	$ 0

Summary of Significant Accounting Policies (Policies) - EBP 001	12 Months Ended
	Dec. 31, 2025
EBP, Accounting Standard Update and Change in Accounting Principle [Line Items]
EBP, Basis of Accounting	Basis of Accounting The accompanying financial statements are prepared on the accrual basis of accounting. Benefits to participants are recorded when paid.
Fair Value Measurement, Investment Income and Losses and Due from/to Brokers	Fair Value Measurement The investments of the Plan are reported at fair value. Fair value is generally defined as the price that would be received to sell an asset or paid to transfer a liability (the exit price) in an orderly transaction between market participants at the measurement date (see Note 3, Fair Value Measurements). Investment Income and Losses Dividend income is recognized on the ex-dividend date, and interest income is recorded on an accrual basis. Unrealized gains and losses on investments are measured by the change in the difference between the fair value and cost of the securities held at the beginning of the year (or date purchased if acquired during the Plan year) and the end of the year. Realized gains and losses from security transactions are recorded based on the weighted-average cost of securities sold. Due from/to Brokers Purchases and sales of investments are recorded on a trade-date basis. Amounts due from and due to brokers arise from unsettled sale and purchase transactions, respectively.
Notes Receivable from Participants	Notes Receivable from Participants Notes receivable from participants are carried at their unpaid balance plus accrued but unpaid interest, as applicable.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. generally accepted accounting principles (GAAP) requires management to make estimates and assumptions that affect the amounts reported in the financial statements, accompanying notes and supplemental schedule. Actual results could differ from those estimates.
Risks and Uncertainties	Risks and Uncertainties The Plan provides for investment options representing varied combinations of equities (including Amgen stock), fixed income, and other investments. Investments, in general, particularly in securities, are exposed to various risks, such as interest rate, inflation, market and credit risks, among others. Market risk includes global events which could impact the value of investments, including securities, such as a pandemic or international conflict. Due to the level of risk associated with certain investments, including securities, it is at least reasonably possible that changes in the values of the Plan’s investments, including securities, will occur in the near term and that such changes could materially affect participant account balances and the amounts reported in the Plan’s financial statements.

- 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 + Details

- Definition

Disclosure of accounting policy for use of estimate in preparation of financial statement of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References + Details

Fair Value Measurements

12 Months Ended

Dec. 31, 2025

EBP 001

EBP, Investment, Fair Value and NAV [Line Items]

Fair Value Measurements

The Plan uses various valuation approaches in determining the fair value of investments within a hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that observable inputs be used when available. Observable inputs are inputs that market participants would use in pricing the investment based on market data obtained from independent sources. Unobservable inputs are inputs that reflect assumptions about the inputs that market participants would use in pricing the investment and are developed based on the best information available in the circumstances.

The fair value hierarchy is divided into three levels based on the source of inputs as follows:

Level 1 – Valuations based on unadjusted quoted prices in active markets for identical investments that the Plan has the ability to access

Level 2 – Valuations for which all significant inputs are observable, either directly or indirectly, other than Level 1 inputs

Level 3 – Valuations based on inputs that are unobservable and significant to the overall fair value measurement

The availability of observable inputs can vary among the various types of investments. To the extent that the valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. In certain cases, the inputs used for measuring fair value may fall into different levels of the fair value hierarchy. In such cases, for financial statement disclosure purposes, the level in the fair value hierarchy within which the fair value measurement is categorized is based on the lowest level of input used that is significant to the overall fair value measurement.

The following fair value hierarchy tables present information about each major class/category of the Plan’s investments measured at fair value:


	Fair value measurements at December 31, 2025, using
	Quoted prices in active markets for identical assets (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)		Total
Amgen stock	$	126,196,526	$	—	$	—	$	126,196,526
Cash and cash equivalents	339,411		—		—		339,411
Collective trust funds	—		722,136,732		—		722,136,732
Common and preferred stocks	8,175,678		—		—		8,175,678
Mutual funds	27,612,784		—		—		27,612,784
Self-directed brokerage accounts	26,713,652		—		—		26,713,652
Total investments at fair value	$	189,038,051	$	722,136,732	$	—	$	911,174,783


	Fair value measurements at December 31, 2024, using
	Quoted prices in active markets for identical assets (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)		Total
Amgen stock	$	100,973,506	$	—	$	—	$	100,973,506
Cash and cash equivalents	43,702		—		—		43,702
Collective trust funds	—		577,297,941		—		577,297,941
Common and preferred stocks	47,870,415		—		—		47,870,415
Mutual funds	16,198,902		—		—		16,198,902
Self-directed brokerage accounts	19,625,736		—		—		19,625,736
Total investments at fair value	$	184,712,261	$	577,297,941	$	—	$	762,010,202

The fair values of substantially all common stocks (including Amgen stock), preferred stocks, mutual funds and underlying investments of self-directed brokerage accounts are valued using quoted market prices in active markets with no valuation adjustment.

Collective trust funds represent interests in pooled investment vehicles designed typically for collective investment of employee benefit trusts. The fair values of these investments are determined by reference to the net asset value per unit provided by the fund managers as the basis for current transactions.

- 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.

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- Definition

The entire disclosure for fair value of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), including, but not limited to, fair value measured at net asset value per share as practical expedient (NAV).

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+ Details

Statement of Changes in Net Assets Available for Benefits - EBP 001	12 Months Ended
	Dec. 31, 2025 USD ($)
Additions to (deductions from) net assets:
Employer contributions	$ 22,642,145
Participant contributions	20,015,238
Rollover contributions	1,111,853
Interest and dividend income	6,491,598
Net realized/unrealized gains	124,470,752
Interest income on notes receivable from participants	1,428,550
Benefits paid	(25,178,261)
Investment and administrative fees	(445,710)
Net increase	150,536,165
Net assets available for benefits at beginning of year	780,088,151
Net assets available for benefits at end of year	$ 930,624,316

Employee Benefit Plan, Schedule, Asset Held for Investment (Details) - EBP 001	12 Months Ended
	Dec. 31, 2025 USD ($)
EBP, Schedule of Asset Held for Investment [Line Items]
Entity tax identification number	98-0210484
Plan number	001
Notes Receivable from Participants*	$ 18,631,683
Grand Total	$ 929,806,467
Minimum
EBP, Schedule of Asset Held for Investment [Line Items]
Interest Rate	4.25%
Maximum
EBP, Schedule of Asset Held for Investment [Line Items]
Interest Rate	9.50%
Investment, Identifier [Axis]: Capital Preservation Asset Class \| NT Collective Short Term Investment Fund
EBP, Schedule of Asset Held for Investment [Line Items]
Total	$ 8,236,750
Investment, Identifier [Axis]: Capital Preservation Asset Class \| Wells Fargo Stable Value Fund W
EBP, Schedule of Asset Held for Investment [Line Items]
Total	104,631,966
Investment, Identifier [Axis]: Common Stock \| Amgen stock
EBP, Schedule of Asset Held for Investment [Line Items]
Total	126,196,526
Investment, Identifier [Axis]: Fixed Income Active Asset Class \| BBH Collective Investment Series Trust Series Fund Income Class 1
EBP, Schedule of Asset Held for Investment [Line Items]
Total	19,673,510
Investment, Identifier [Axis]: Fixed Income Active Asset Class \| FIAM Group Trust For Employees Benefit Plan Core Plus Commingled Pool Class W
EBP, Schedule of Asset Held for Investment [Line Items]
Total	19,684,534
Investment, Identifier [Axis]: Fixed Income Active Asset Class \| NT Collective Aggregate Bond Index Fund / Non Lending
EBP, Schedule of Asset Held for Investment [Line Items]
Total	9,168,289
Investment, Identifier [Axis]: Fixed Income Active Asset Class \| Wellington Core Bond Plus Portfolio Collective Investment Trust II
EBP, Schedule of Asset Held for Investment [Line Items]
Total	19,786,144
Investment, Identifier [Axis]: Fixed Income Index Asset Class \| NT Collective Aggregate Bond Index Fund / Non Lending
EBP, Schedule of Asset Held for Investment [Line Items]
Total	119,759,185
Investment, Identifier [Axis]: International Equity Active Asset Class \| Dodge & Cox International Stock Fund
EBP, Schedule of Asset Held for Investment [Line Items]
Total	27,612,784
Investment, Identifier [Axis]: International Equity Active Asset Class \| Great Grey Trust Company GQG Partners International Equity CIT Class C
EBP, Schedule of Asset Held for Investment [Line Items]
Total	26,952,254
Investment, Identifier [Axis]: International Equity Active Asset Class \| Mawer International Equity Collective Investment Trust Class B
EBP, Schedule of Asset Held for Investment [Line Items]
Total	27,322,286
Investment, Identifier [Axis]: International Equity Active Asset Class \| Mondrian Master CIT Focused All Countries World ex-US Equity
EBP, Schedule of Asset Held for Investment [Line Items]
Total	26,740,527
Investment, Identifier [Axis]: International Equity Active Asset Class \| NT Collective MSCI All Country World Index (ACWI) ex/US Index Fund / Non Lending
EBP, Schedule of Asset Held for Investment [Line Items]
Total	4,438,045
Investment, Identifier [Axis]: International Equity Active Asset Class \| Wilmington Trust Collective Investment Trust / Jennison International Equity Opportunities CIT Class J
EBP, Schedule of Asset Held for Investment [Line Items]
Total	26,817,997
Investment, Identifier [Axis]: International Equity Index Asset Class \| NT Collective MSCI All Country World Index (ACWI) ex/US Index Fund / Non Lending
EBP, Schedule of Asset Held for Investment [Line Items]
Total	30,357,741
Investment, Identifier [Axis]: Other \| ML Vanguard Federal Money Market Forfeiture / Settlement
EBP, Schedule of Asset Held for Investment [Line Items]
Total	54,661
Investment, Identifier [Axis]: Other \| NT Collective Short Term Investment Fund
EBP, Schedule of Asset Held for Investment [Line Items]
Total	2,258
Investment, Identifier [Axis]: Other \| Tax Reclaims
EBP, Schedule of Asset Held for Investment [Line Items]
Total	284,750
Investment, Identifier [Axis]: Participant Self-Directed Accounts
EBP, Schedule of Asset Held for Investment [Line Items]
Total	26,713,652
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| AAON Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	20,969
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Allegion PLC
EBP, Schedule of Asset Held for Investment [Line Items]
Total	95,214
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Ametek Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	288,666
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Amphenol Corporation Class A
EBP, Schedule of Asset Held for Investment [Line Items]
Total	167,168
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Arhaus Inc. Class A
EBP, Schedule of Asset Held for Investment [Line Items]
Total	29,101
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| BWX Technologies Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	248,371
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Balchem Corporation
EBP, Schedule of Asset Held for Investment [Line Items]
Total	46,621
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Bank Ozk
EBP, Schedule of Asset Held for Investment [Line Items]
Total	59,320
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Bellring Brands Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	16,893
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Bio-Techne Corporation
EBP, Schedule of Asset Held for Investment [Line Items]
Total	171,196
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Blackrock Instituitional Trust Company Investment Funds Russell 3000 Alpha Tilts Fund F
EBP, Schedule of Asset Held for Investment [Line Items]
Total	15,451,387
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Boston Partners CIT Large Capital Value Class E
EBP, Schedule of Asset Held for Investment [Line Items]
Total	13,991,029
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Brown & Brown Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	159,639
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| CCC Intelligent Solutions Holdings Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	42,509
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| CSW Industrials Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	45,497
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Cabot Corporation
EBP, Schedule of Asset Held for Investment [Line Items]
Total	92,456
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Camtek Limited
EBP, Schedule of Asset Held for Investment [Line Items]
Total	46,154
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Casella Waste Systems Inc. Class A
EBP, Schedule of Asset Held for Investment [Line Items]
Total	97,156
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Certara Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	30,624
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Charles River Laboratories International Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	173,348
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Clean Harbors Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	324,286
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Clearwater Analytics Holdings Inc. Class A
EBP, Schedule of Asset Held for Investment [Line Items]
Total	37,410
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Cohen & Steers Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	19,776
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Coherent Corporation
EBP, Schedule of Asset Held for Investment [Line Items]
Total	302,326
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Copart Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	74,033
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Dolby Laboratories Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	144,302
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| EnPro Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	57,601
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Ensign Group Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	71,945
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Entegris Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	262,523
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Everus Construction Group Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	43,721
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Fabrinet Company
EBP, Schedule of Asset Held for Investment [Line Items]
Total	64,194
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Federal Signal Corporation
EBP, Schedule of Asset Held for Investment [Line Items]
Total	64,611
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| First American Financial Corporation
EBP, Schedule of Asset Held for Investment [Line Items]
Total	75,940
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Five Below Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	39,744
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Floor & Decor Holdings Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	23,869
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Freshpet Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	25,712
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Global-E Online Limited
EBP, Schedule of Asset Held for Investment [Line Items]
Total	41,669
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Goosehead Insurance Inc. Class A
EBP, Schedule of Asset Held for Investment [Line Items]
Total	22,832
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Graco Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	88,774
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Guidewire Software Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	36,986
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Halozyme Therapeutics Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	165,625
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Hamilton Lane Inc. Class A
EBP, Schedule of Asset Held for Investment [Line Items]
Total	40,293
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| HealthEquity Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	102,786
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Heico Corporation Class A
EBP, Schedule of Asset Held for Investment [Line Items]
Total	151,458
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Henry Schein Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	161,666
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Hexcel Corporation
EBP, Schedule of Asset Held for Investment [Line Items]
Total	104,199
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Huntington Bancshares Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	207,593
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| ICF International, Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	42,053
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| IDEX Corporation
EBP, Schedule of Asset Held for Investment [Line Items]
Total	135,412
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Ingredion Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	165,831
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Kadant Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	50,164
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Keysight Technologies Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	168,241
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| LKQ Corporation
EBP, Schedule of Asset Held for Investment [Line Items]
Total	120,800
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Loar Holdings Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	46,376
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Markel Corporation Holding Company
EBP, Schedule of Asset Held for Investment [Line Items]
Total	40,843
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Medpace Holdings Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	63,466
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Mid-American Apartment Communities Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	96,404
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Modine Manufacturing Company
EBP, Schedule of Asset Held for Investment [Line Items]
Total	43,257
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Moelis & Company Class A
EBP, Schedule of Asset Held for Investment [Line Items]
Total	54,717
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Morningstar Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	25,208
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| NT Collective Russell 3000 Index Fund / Non Lending
EBP, Schedule of Asset Held for Investment [Line Items]
Total	2,388,133
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| NT Collective Short Term Investment Fund
EBP, Schedule of Asset Held for Investment [Line Items]
Total	214,623
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| National Retail Properties Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	64,359
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Nova Measuring Instruments
EBP, Schedule of Asset Held for Investment [Line Items]
Total	63,708
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Novanta Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	26,416
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Nuveen Winslow Large Capital Growth Fund Class C
EBP, Schedule of Asset Held for Investment [Line Items]
Total	19,602,868
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Ollies Bargain Outlet Holdings Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	46,913
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Paymentus Holdings Inc. Class A
EBP, Schedule of Asset Held for Investment [Line Items]
Total	52,787
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Pool Corporation
EBP, Schedule of Asset Held for Investment [Line Items]
Total	5,719
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Power Integrations Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	119,059
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Procore Technologies Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	78,196
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Prosperity Bancshares Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	108,434
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Q2 Holdings Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	28,215
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| RBC Bearings Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	79,821
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| RLI Corporation
EBP, Schedule of Asset Held for Investment [Line Items]
Total	29,559
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Rentokil Initial PLC
EBP, Schedule of Asset Held for Investment [Line Items]
Total	184,361
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| SS&C Technologies Holdings Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	288,136
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| STERIS plc
EBP, Schedule of Asset Held for Investment [Line Items]
Total	133,859
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Saia Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	43,754
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Shift4 Payments Inc. Class A
EBP, Schedule of Asset Held for Investment [Line Items]
Total	139,856
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| SiteOne Landscape Supply Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	54,557
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Standex International Corporation
EBP, Schedule of Asset Held for Investment [Line Items]
Total	50,409
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Trex Company Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	21,855
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| UFP Industries Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	27,224
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| UGI Corporation
EBP, Schedule of Asset Held for Investment [Line Items]
Total	199,090
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Valvoline Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	28,915
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Vita Coco Company Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	8,694
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| WEX Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	107,117
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Waste Connections Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	278,121
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Wingstop Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	29,811
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| Woodward Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	201,950
Investment, Identifier [Axis]: U.S. Equity Active Asset Class \| XPEL Inc.
EBP, Schedule of Asset Held for Investment [Line Items]
Total	35,236
Investment, Identifier [Axis]: U.S. Equity Index Asset Class \| NT Collective Russell 3000 Index Fund / Non Lending
EBP, Schedule of Asset Held for Investment [Line Items]
Total	226,917,206
Amgen stock
EBP, Schedule of Asset Held for Investment [Line Items]
Total	126,196,526
Capital Preservation Asset Class:
EBP, Schedule of Asset Held for Investment [Line Items]
Total	112,868,716
Fixed Income Active Asset
EBP, Schedule of Asset Held for Investment [Line Items]
Total	68,312,477
Fixed Income Index Asset
EBP, Schedule of Asset Held for Investment [Line Items]
Total	119,759,185
U.S. Equity Active Asset
EBP, Schedule of Asset Held for Investment [Line Items]
Total	59,823,719
U.S. Equity Index Asset
EBP, Schedule of Asset Held for Investment [Line Items]
Total	226,917,206
International Equity Active Asset
EBP, Schedule of Asset Held for Investment [Line Items]
Total	139,883,893
International Equity Index Asset
EBP, Schedule of Asset Held for Investment [Line Items]
Total	30,357,741
Participant Self-Directed Accounts
EBP, Schedule of Asset Held for Investment [Line Items]
Total	26,713,652
Other investments
EBP, Schedule of Asset Held for Investment [Line Items]
Total	$ 341,669

Income Tax Status (Details)	Dec. 31, 2025 amendment
EBP 001
EBP, Tax Status [Line Items]
Number of amendments	7

Cover	12 Months Ended
Cover	Dec. 31, 2025
Document Information [Line Items]
Document Type	11-K
Entity Registrant Name	AMGEN INC.
Amendment Flag	false
Entity Central Index Key	0000318154
EBP 001
Document Information [Line Items]
Document Type	11-K
Entity Registrant Name	AMGEN INC.
Amendment Flag	false
Entity Central Index Key	0000318154

Income Tax Status	12 Months Ended
Income Tax Status	Dec. 31, 2025
EBP 001
EBP, Tax Status [Line Items]
Income Tax Status	Income Tax Status The Plan received an opinion letter from the Puerto Rico Treasury Department (PRTD) dated February 26, 2018, with an effective date of January 1, 2017, stating that the Plan meets the requirements of Section 1081.01 of the PR Code and the regulations thereunder, and, therefore the related trust forming part of the Plan is exempt from taxation. Subsequently, seven amendments were made to the Plan, and the Plan received letters from the PRTD stating the PRTD has no objection to any of the seven amendments. Once qualified, the Plan is required to operate in conformity with the PR Code to maintain its qualification. For taxable year 2025, the Company believes the Plan satisfied, and operated in compliance with, the applicable requirements of the PR Code and therefore believes that the Plan, as amended, is qualified and the related trust is tax exempt. The Company has indicated that it currently intends to continue to take the necessary steps, if any, to maintain the Plan’s compliance with the applicable requirements of the PR Code.