0001037868-26-000169 | 11-K | XBRL Viewer

Income Tax Status	12 Months Ended
Dec. 31, 2025
EBP 078
EBP, Tax Status [Line Items]
Income Tax Status	Income Tax Status The Plan has received a determination letter from the Internal Revenue Service (“IRS”) dated January 22, 2024, stating that the Plan is qualified under Section 401(a) of the Internal Revenue Code (the “Code”) and, therefore, the related trust is exempt from taxation. Subsequent to this determination by the IRS, the Plan was amended and restated. Once qualified, the Plan is required to operate in conformity with the Code to maintain its qualification. The plan administrator believes the Plan is being operated in compliance with the applicable requirements of the Code and, therefore, believes the Plan, as amended and restated, is qualified and the related trust is tax-exempt. Accounting principles generally accepted in the United States require plan management to evaluate tax positions taken by the Plan and recognize a tax liability if the Plan has taken an uncertain position that more likely than not would not be sustained upon examination by the IRS. Plan management has analyzed the tax positions taken by the Plan and has concluded that there are no uncertain positions taken or expected to be taken. The Plan is subject to routine audits by taxing jurisdictions; however, there are currently no audits for any tax periods in progress.

Description of Plan (Tables) - EBP 078

12 Months Ended

Dec. 31, 2025

EBP, Description of Plan [Line Items]

Schedule Of Net Assets Transferred To (From) Plan

During 2025, the following net assets were transferred into the Plan (in thousands):


Receipt Date	401(k) Savings Plan
February 13, 2025	MW Life Sciences (Paragon)	$	98,910
March 13, 2025	MW Life Sciences (Paragon)	17
December 29, 2025	Rauland-Borg Corporation	54,951
		$	153,878

During 2024, the following net assets were transferred into the Plan (in thousands):


Receipt Date	401(k) Savings Plan
March 20, 2024	Special Optics, Inc.	$	3,178
April 1, 2024	Amplifier Research	19,141
December 31, 2024	Superior Tube Company, Inc.*	8,566

		$	30,885

Schedule of Master Trust Net Assets

As of December 31, 2024, the assets of the Master Trust and the Plan’s interest in the Master Trust was as follows:



	Master Trust Balances		Plan’s Interest in Master Trust Balances
AMETEK Stock Fund	$	151,220,244	$	151,220,244
State Street Government Short Term Investment Fund	1,473,072		1,473,072

Total assets	$	152,693,316	$	152,693,316

Changes in the assets held by the Master Trust were as follows:


	Year Ended December 31,
	2025		2024
Net appreciation (depreciation) in fair value of investment	$	—	$	13,919,810
Interest and dividend income	—		1,067,614
Transfers in	—		12,439,409
Transfers out	—		(29,391,795)
Investments transferred out of the Master Trust	(152,693,316)		—
Decrease in assets	(152,693,316)		(1,964,962)
Assets at beginning of year	152,693,316		154,658,278
Assets at end of year	$	—	$	152,693,316

- Definition

Tabular disclosure of master trust arrangement in which employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) participates.

+ References + Details

Differences Between Financial Statements and Form 5500 - Reconciliation of Deductions per the Financial Statements to Total Expenses per the Plan’s Form 5500 (Details) - EBP 078 - USD ($)	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
EBP, Reconciliation of Financial Statement to Form 5500 [Line Items]
Total deductions	$ (278,857,016)	$ (225,326,890)
Deemed distributions	95,458
Total expenses per Form 5500	$ (278,761,558)

Description of the Plan - Narrative (Details) - EBP 078 - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
EBP, Description of Plan [Line Items]
Participant contribution, pretax, maximum annual compensation to total compensation, percentage	75.00%
Catch up contribution, eligibility age	50 years
Catch up contribution, maximum percentage	75.00%
Participant contribution, automatic, annual increase deferral rate	1.00%
Employer contribution, matching percentage	100.00%	33.333%
Employer contribution, participant compensation matched, percentage	4.00%	6.00%
Employer contribution maximum annual amount per participant		$ 1,200
Change in net asset available for benefit, increase from employer contribution, discretionary	$ 8,200,000	0
Forfeited nonvested account, decrease from administrative expense	1,653,380	1,553,974
Forfeited nonvested account	$ 229,219	87,469
Employer contribution vesting service period	3 years
Note receivable from participant, account, minimum borrowing, amount	$ 1,000
Note receivable from participant, account, maximum borrowing, amount	$ 50,000
Note receivable from participant, account, maximum borrowing, to total account, percentage	50.00%
Note receivable from participant, general loan, maximum borrowing term	60 months
Note receivable from participant, account, primary residence, maximum borrowing term	10 years
Participant loan, basis spread on variable rate	1.00%
Participant contribution, employer common stock maximum percentage	25.00%
Change in net asset available for benefit, increase from dividend income on investment	$ 948,913	$ 994,567
Optional installment payment period, maximum	15 years
Participant distribution minimum age	59 years 6 months
Vested account balance, maximum for mandatory rollover	$ 7,000
Vested account balance, minimum For mandatory rollover	1,000
Vested account balance, maximum for cash distribution	$ 1,000
Minimum
EBP, Description of Plan [Line Items]
Participant contribution, automatic, deferral rate	3.00%
Employer contribution, matching percentage	50.00%	50.00%
Employer contribution, participant compensation matched, percentage	1.00%	1.00%
Maximum
EBP, Description of Plan [Line Items]
Participant contribution, automatic, deferral rate	10.00%
Employer contribution, matching percentage	100.00%	100.00%
Employer contribution, participant compensation matched, percentage	6.00%	8.00%

Differences Between Financial Statements and Form 5500 - Reconciliation of Net Assets Available for Benefit (Details) - USD ($)	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
EBP 078
EBP, Reconciliation of Financial Statement to Form 5500 [Line Items]
Net assets available for benefits per the financial statements	$ 2,261,877,996	$ 1,944,535,515	$ 1,795,512,150
EBP 002
EBP, Reconciliation of Financial Statement to Form 5500 [Line Items]
Net assets available for benefits per the financial statements	2,261,877,996	1,944,535,515
Deemed distributions outstanding	0	(95,458)
Net assets available for benefits per Form 5500	$ 2,261,877,996	$ 1,944,440,057

- Definition

Amount of asset less liability available to pay benefit of participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), including, but not limited to, aggregation of participants' individual account balances.

+ References

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+ Details

Description of the Plan - Assets of the Master Trust and the Plan’s Interest in the Master Trust (Details) - EBP 078 - USD ($)	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
EBP, Description of Plan [Line Items]
Total investments	$ 2,231,099,374	$ 1,927,429,213
Net assets available for benefits	2,261,877,996	1,944,535,515	$ 1,795,512,150
Master Trust Balances
EBP, Description of Plan [Line Items]
Net assets available for benefits	$ 0	152,693,316	$ 154,658,278
Master Trust Balances \| AMETEK Stock Fund
EBP, Description of Plan [Line Items]
Total investments		151,220,244
Master Trust Balances \| State Street Government Short Term Investment Fund
EBP, Description of Plan [Line Items]
Total investments		1,473,072
Plan’s Interest in Master Trust Balances
EBP, Description of Plan [Line Items]
Net assets available for benefits		152,693,316
Plan’s Interest in Master Trust Balances \| AMETEK Stock Fund
EBP, Description of Plan [Line Items]
Total investments		151,220,244
Plan’s Interest in Master Trust Balances \| State Street Government Short Term Investment Fund
EBP, Description of Plan [Line Items]
Total investments		$ 1,473,072

- Definition

Fair value of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Includes, but is not limited to, derivative, investment measured at net asset value per share as practical expedient, and insurance contract not meeting fully-benefit responsive investment criteria.

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Schedule H, Line 4i – Schedule of Assets (Held At End of Year)

12 Months Ended

Dec. 31, 2025

EBP 078

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

Schedule H, Line 4i – Schedule of Assets (Held At End of Year)

The AMETEK Retirement and Savings Plan

EIN 14-1682544 Plan #078

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

December 31, 2025


Identity of issue, borrower, lessor or similar party	Description of investment, including maturity date, rate of interest, collateral, par, or maturity value	Current Value
Voya Stabilizer Fund (Separate Account for Ametek No. 920)	Separate Account	$	104,439,501
Voya Retirement Insurance Annuity Company Wrap Contract #60498	Interest rate of 2.49% at December 31, 2025	5,391,866
		109,831,367

Vanguard Target Retirement Income Trust I	Common/Collective Trust	49,358,005
Vanguard Target Retirement 2020 Trust I	Common/Collective Trust	71,651,015
Vanguard Target Retirement 2025 Trust I	Common/Collective Trust	185,194,435
Vanguard Target Retirement 2030 Trust I	Common/Collective Trust	231,967,863
Vanguard Target Retirement 2035 Trust I	Common/Collective Trust	205,642,140
Vanguard Target Retirement 2040 Trust I	Common/Collective Trust	135,289,326
Vanguard Target Retirement 2045 Trust I	Common/Collective Trust	110,224,351
Vanguard Target Retirement 2050 Trust I	Common/Collective Trust	91,169,987
Vanguard Target Retirement 2055 Trust I	Common/Collective Trust	62,222,970
Vanguard Target Retirement 2060 Trust I	Common/Collective Trust	29,588,110
Vanguard Target Retirement 2065 Trust I	Common/Collective Trust	14,518,748
Vanguard Target Retirement 2070 Trust I	Common/Collective Trust	3,216,174
Reliance Trust MetLife Stable Value Fund Series 25053 Class 25	Common/Collective Trust	995,737
WTC-CIF II Core Bond Plus (Series 2) Portfolio	Common/Collective Trust	10,077,400
State Street Real Asset Fund	Common/Collective Trust	4,019,242
T. Rowe Price Structured Research Common Trust Fund Class D	Common/Collective Trust	247,555,220
Jennison Small/Mid Cap Equity Fund	Common/Collective Trust	39,989,818
Invesco Stable Value Trust Class A1	Common/Collective Trust	1,760,393
* FIAM U.S. Bond Index Commingled Pool Class D	Common/Collective Trust	49,610,861
* Spartan® 500 Index Pool Class C	Common/Collective Trust	289,722,891
* Spartan® Extended Market Index Pool Class C	Common/Collective Trust	69,242,199
* Spartan® Total International Index Pool Class C	Common/Collective Trust	31,580,513
American Funds EuroPacific Growth Fund	Registered Investment Company	33,145,623
* Fidelity® Investments Money Market Treasury Portfolio - Class I	Registered Investment Company	1,357,112
* AMETEK Stock Fund	AMETEK Stock Fund	152,167,874
	Total investments	2,231,099,374
* Notes Receivable from Participants	Interest rates ranging from 3.25% to 9.50%	22,560,622
		$2,253,659,996

______________

*Indicates party–in–interest to the Plan.

Historical cost column is not included as all investments are participant–directed.

Statements of Net Assets Available for Benefits - EBP 078 - USD ($)	Dec. 31, 2025	Dec. 31, 2024
Assets:
Investments, at fair value	$ 2,121,268,007	$ 1,645,001,587
Fully benefit-responsive investment contract, at contract value	109,831,367	129,734,310
Plan interest in the AMETEK, Inc. Master Trust, at fair value	0	152,693,316
Total investments	2,231,099,374	1,927,429,213
Receivables:
Employer contributions	8,218,000	0
Notes receivable from participants	22,560,622	17,106,302
Total receivables	30,778,622	17,106,302
Net assets available for benefits	$ 2,261,877,996	$ 1,944,535,515

Description of the Plan

12 Months Ended

Dec. 31, 2025

EBP 078

EBP, Description of Plan [Line Items]

Description of the Plan

General

The following description of The AMETEK Retirement and Savings Plan (the “Plan”) provides only summarized information. Participants should refer to the Plan document for a more complete description of the Plan’s provisions, copies of which may be obtained from AMETEK, Inc. (“AMETEK,” the “Company” or the “Plan Sponsor”).

The Plan is a 401(k) profit-sharing defined contribution savings plan. It provides eligible employees of AMETEK and certain of its business units with an opportunity to invest a portion of their compensation, as defined by the Plan, in one or more investment options.

Trustee and Recordkeeper

Voya Institutional Trust Company (“Trustee”) was the Plan Trustee and a party-in-interest to the Plan until December 31, 2024. Voya Institutional Plan Services, LLC was the recordkeeper and a party-in-interest to the Plan until December 31, 2024.

Effective January 1, 2025, Fidelity Management Trust Company ("Fidelity") is the Plan Trustee and a party-in-interest to the Plan. Fidelity Workplace Services LLC is the recordkeeper and a party-in-interest to the Plan.

Participant Eligibility

An employee, who is not specifically an ineligible employee as defined by the Plan, shall become a participant in the Plan upon his or her date of hire and on or after the date on which the participant first attains age 18.

Plan Mergers

During 2025, the following net assets were transferred into the Plan (in thousands):


Receipt Date	401(k) Savings Plan
February 13, 2025	MW Life Sciences (Paragon)	$	98,910
March 13, 2025	MW Life Sciences (Paragon)	17
December 29, 2025	Rauland-Borg Corporation	54,951
		$	153,878

During 2024, the following net assets were transferred into the Plan (in thousands):


Receipt Date	401(k) Savings Plan
March 20, 2024	Special Optics, Inc.	$	3,178
April 1, 2024	Amplifier Research	19,141
December 31, 2024	Superior Tube Company, Inc.*	8,566

		$	30,885

* The Board of Directors of Superior Tube Company, Inc. approved an amendment to merge the Superior Tube Company, Inc. Union 401(k) Plan ("Superior Plan"), effective December 31, 2024, with and into the Plan. As of the merger date, the Plan assumed all of the assets of the Superior Plan. On January 3, 2025, Superior Plan participants' account balances were transferred to the Plan.

Contributions

Each year, participants have an opportunity to invest, on a pre-tax basis, up to 75% of their annual compensation, as defined by the Plan, in multiples of one percent. Prior to January 1, 2025, certain highly compensated participants were subject

to a 10% limitation. Participants age 50 and over have an opportunity to invest catch-up contributions up to 75% of their compensation. Participants may also contribute amounts representing rollovers from other qualified plans. Participants direct their elective contributions into various investment options offered by the Plan and can change their investment options on a daily basis.

The Plan: (1) allows eligible employees to designate all or a portion of their pre-tax contribution as a Roth contribution, (2) allows eligible employees to make contributions to the Plan on an after-tax basis (Prior to January 1, 2025, contributions were limited to 10% of eligible compensation for highly compensated employees), and (3) accepts direct (but not indirect) rollovers of Roth and after-tax contributions. Roth contributions are eligible for catch-up contributions and matching contributions, and in general, are treated like pre-tax contributions under the Plan for purposes of investment allocations, loan disbursements and withdrawals. Pre-tax contributions and Roth contributions are aggregated for purposes of the dollar limit on deferrals and catch-up contributions under the Internal Revenue Code. After-tax contributions are not eligible for catch-up or matching contributions. After-tax contributions are treated as a separate source under the Plan for purposes of investment allocations, loan disbursements and withdrawals, as defined by the Plan.

Participants are automatically enrolled in the Plan at a rate of 3% of their compensation unless the participant opts out of automatic enrollment or until the participant changes their elections. The Vanguard Target Retirement Funds are the qualified default investment alternatives. The Plan provides for automatic deferral increases by 1% of compensation each January up to a maximum of 10% for participants eligible on, or after January 1, 2021. Participants automatically enrolled in the Plan may revoke their participation of automatic increases, elect a different annual automatic increase percentage and have the increase begin in a month other than January. Participants who are not automatically enrolled in the Plan are also permitted to elect automatic deferral increases.

Effective January 1, 2025 the Plan provides for a Safe Harbor Company matching contributions equal to 100% of the first 4% of compensation contributed by each eligible non-union participant and certain union participants. Also, the Plan provides for Company contributions to certain eligible union participants, which vary by location and range from 50% to 100% of the amount contributed by each participant, up to a maximum percentage ranging from 1% to 6% of the participants’ compensation. Matching Company contributions are credited to participants’ accounts at the same time their contributed amounts are invested and are allocated in the same manner as that of their elections. A year-end Safe Harbor true-up match is calculated by the Company and credited to participants' accounts. The Company may make its matching contribution payment to the Plan at any time prior to the due date prescribed by law for filing the Company’s federal income tax return for that Plan year.

Prior to January 1, 2025, the Plan provided for Company contributions equal to 33 1/3% of the first 6% of compensation contributed by each eligible participant, up to a maximum annual Company contribution of $1,200 per participant. Also, the Plan provided for Company contributions to eligible participants, which varied by location and range from 50% to 100% of the amount contributed by each participant, up to a maximum percentage ranging from 1% to 8% of the participants’ compensation as determined by the Board of Directors for each business unit. Matching Company contributions were credited to participants’ accounts at the same time their contributed amounts were invested and were allocated in the same manner as that of their elections.

The Plan allows discretionary employer contributions as determined by the Board of Directors which may be subject to hours of service and/or other employment conditions. There were discretionary employer contributions of $8.2 million in 2025 and none in 2024.

The Plan has a retirement feature for certain eligible union employees of AMETEK. The Company makes contributions to the Plan on behalf of such employees equal to a specified percentage of their compensation earned based upon participants’ age and years of service, up to predetermined limits. Investment programs and transfer and exchange privileges available under the retirement feature are the same as for the savings feature under the Plan.

Forfeited Company contributions are used to reduce future Company contributions or to pay Plan administrative expenses. During 2025 and 2024, the Plan used forfeited Company contributions of $1,653,380 and $1,553,974, respectively. As of December 31, 2025 and 2024, the balance in the forfeitures account totaled $229,219 and $87,469, respectively.

All contributions are subject to certain limitation of the Internal Revenue Code.

Participant Accounts

Each participant’s account is credited with the participant’s contributions and allocations of (a) the Company’s contributions, (b) Plan net earnings, and (c) administrative expenses. Allocations of Plan net earnings are based on participant earnings or losses of respective elected investment options and/or account balances, as defined. The benefit to which a participant is entitled is the balance in the participant’s vested account.

Vesting

Participants are fully vested at all times in participant contributions and Company matching contributions and related earnings. Company retirement feature contributions and related earnings, Company incentive retirement feature contributions and related earnings, and Company discretionary contributions and related earnings are fully vested after three years of service.

Participant Loans

Participants may borrow a minimum of $1,000 or up to a maximum equal to the lesser of $50,000 or 50% of their vested account balance. Participants may have up to two loans outstanding at any time, although only one loan may be for a primary residence, the sum of which may not exceed the maximum allowable under the Plan. Loan origination fees are paid by participants. Repayment terms of the loans are generally limited to no longer than 60 months from inception or for a reasonable period of time in excess of 60 months up to 10 years for the purchase of a principal residence, as fixed by the Plan. The loans are secured by the balance in the participant’s account and bear interest at rates determined as 1% over the prime rate. Principal and interest are paid ratably through payroll deductions or in certain circumstances can be paid directly by participants.

Master Trust

Prior to January 1, 2025, The AMETEK, Inc. Master Trust held the assets of the AMETEK Stock Fund. Effective January 1, 2025, in connection with the transition to Fidelity as recordkeeper and trustee, all assets were transferred out of the Master Trust, and the trust was terminated. Despite the termination of the Master Trust, the AMETEK Stock Fund remains within the Plan and is reported in "Investments, at fair value" on the accompanying Statements of Net Assets Available for Benefits as of December 31, 2025.

The AMETEK Stock Fund consists primarily of AMETEK common stock and a small portion is invested in short-term securities or cash to help accommodate daily transactions. The AMETEK Stock Fund, short-term securities, and cash are considered level 1 investments within the fair value hierarchy.

The Plan limits the amount a participant can invest in the AMETEK Stock Fund to encourage diversification of participants’ accounts. Each payroll period, for other investment fund transfers and for other qualified plan rollover contributions, a participant can direct up to a maximum of 25% of their contributions in the AMETEK Stock Fund. The Plan has implemented a dividend pass through election for its participants. During 2025 and 2024, the Plan received $948,913 and $994,567, respectively, in common stock dividends for AMETEK common stock.

Each participant is entitled to exercise voting rights attributable to the shares allocated to their account and is notified by the Company prior to the time that such rights may be exercised. The Trustee is not permitted to vote any allocated shares for which instructions have not been given by a participant. The Trustee votes any unallocated shares in the same proportion as those shares that were allocated, unless the Savings and Investment Committee directs the Trustee otherwise. Participants have the same voting rights in the event of a tender or exchange offer.

As of December 31, 2024, the assets of the Master Trust and the Plan’s interest in the Master Trust was as follows:



	Master Trust Balances		Plan’s Interest in Master Trust Balances
AMETEK Stock Fund	$	151,220,244	$	151,220,244
State Street Government Short Term Investment Fund	1,473,072		1,473,072

Total assets	$	152,693,316	$	152,693,316

Changes in the assets held by the Master Trust were as follows:


	Year Ended December 31,
	2025		2024
Net appreciation (depreciation) in fair value of investment	$	—	$	13,919,810
Interest and dividend income	—		1,067,614
Transfers in	—		12,439,409
Transfers out	—		(29,391,795)
Investments transferred out of the Master Trust	(152,693,316)		—
Decrease in assets	(152,693,316)		(1,964,962)
Assets at beginning of year	152,693,316		154,658,278
Assets at end of year	$	—	$	152,693,316

Payment of Benefits

On termination of service, death, disability or retirement, a participant may receive a lump-sum amount equal to his or her vested account. Participants who terminate may elect to receive installment payments up to a 15-year period but subject to certain restrictions based on life expectancy. When a participant attains age 591⁄2 while still an employee, he or she can elect to withdraw a specified portion of his or her vested account balance without incurring an income tax penalty. If a participant’s vested benefit derived from employer and employee contributions is less than $7,000 but more than $1,000, and the participant does not make an affirmative election otherwise, the administrator will roll over the balance into an individual retirement account. If a participant’s vested balance is $1,000 or less, and the participant does not make an affirmative election otherwise, they will receive a lump sum distribution in the form of a cash payment. Also, in certain cases of financial hardship, a participant may elect to withdraw up to a specified portion of his or her vested account balance, regardless of age. Benefits are recorded when paid.

Pursuant to the Setting Every Community Up for Retirement Enhancement ("SECURE") Act 2.0, enacted in January 2023, as amended in the Plan, the required minimum distribution age was increased to 73 years of age. In addition, the Plan modified certain minimum distribution provisions and timing for designated beneficiaries in accordance with the SECURE Act provisions.

Administrative Expenses

Except for certain loan fees, the expenses of administering the Plan are payable from the Plan’s assets, unless the Company elects to pay such expenses. The Company has elected to have certain expenses of administering the Plan paid by the Company.

Plan Termination

The Plan is subject to the provisions of the Employee Retirement Income Security Act of 1974, as amended (“ERISA”). While the Company has not expressed any intent to terminate the Plan, it is free to do so at any time subject to the provisions of ERISA and applicable labor agreements. In the event of Plan termination, each participant’s account would become fully vested and each participant will receive the value of his or her separate vested account.

Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2025

EBP 078

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

EBP, Investment, Fair Value and NAV

The following tables set forth by level, within the fair value hierarchy, the Plan’s assets at fair value:


	December 31, 2025
	Total		Level 1		Level 2		Level 3
Registered investment companies	$	34,502,735	$	34,502,735	$	—	$	—
Common/Collective Trusts	1,934,597,398		1,934,597,398		—		—
AMETEK Stock Fund	152,167,874		152,167,874		$	—	$	—
Investments, at Fair Value	$	2,121,268,007	$	2,121,268,007	$	—	$	—


	December 31, 2024
	Total		Level 1		Level 2		Level 3
Registered investment companies	$	817,401,369	$	817,401,369	$	—	$	—
Common/Collective Trusts	827,600,218		827,600,218		—		—
Investments, at Fair Value	$	1,645,001,587	$	1,645,001,587	$	—	$	—

- 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

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+ Details

- Definition

Tabular disclosure of 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).

+ References

+ Details

Summary of Significant Accounting Policies (Policies) - EBP 078	12 Months Ended
	Dec. 31, 2025
EBP, Accounting Policy [Line Items]
Basis of Presentation	Basis of Presentation The accompanying financial statements have been prepared on the accrual basis of accounting in accordance with U.S. generally accepted accounting principles (“GAAP”).
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires Plan management to make estimates and assumptions that affect amounts reported in the financial statements and accompanying notes, and supplemental schedule. Actual results could differ from those estimates and assumptions.
Notes Receivable from Participants	Notes Receivable from Participants Notes receivable from participants represent participant loans that are recorded at their unpaid principal balance plus any accrued but unpaid interest. Interest income on notes receivable from participants is recorded when it is earned. Related fees are paid from participants’ accounts. If a participant ceases to make loan repayments and the plan administrator deems the participant loan to be a distribution, the participant loan balance is reduced, and a benefit payment is recorded.
Contributions	Contributions Participant contributions and the matching employer contributions are recorded in the year in which the participant contributions are withheld from compensation.
Risks and Uncertainties	Risks and Uncertainties The Plan invests in various investment securities. Investment securities are exposed to various risks such as interest rate, market fluctuation and credit risks. Due to the level of risk associated with certain investment securities, it is at least reasonably possible that changes in the values of investment securities will occur in the near term and that such changes could materially affect participants’ account balances and the amounts reported in the statements of net assets available for benefits.
Investment Valuation and Income Recognition	Investment Valuation and Income Recognition The Plan’s investments are stated at fair value, except for the fully benefit-responsive investment contract, which is stated at contract value. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. See Notes 1 and 4 for further discussion and disclosures related to fair value measurements. Investments in shares of registered investment companies and short term investment funds are valued at quoted market prices, which represent the net asset values of shares held by the Plan at year end. Investments in common/collective trusts have readily determinable fair values and are valued based on the net asset value of participation units held by the Plan at year end. There are no redemption restrictions on these investments and purchases and sales may occur on a daily basis. The AMETEK common stock is valued at the closing price reported in an active market. Purchases and sales of investments are reflected on trade dates. Realized gains and losses on sales of investments are based on the average cost of such investments. Interest income is recorded on the accrual basis. Dividend income is recorded on the ex-dividend date. Income from other investments is recorded as earned. Plan investments do not have significant costs to sell. Net appreciation (depreciation) includes the Plan's realized and unrealized gains and losses as well as investments held at year-end.

- 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 (Details) - EBP 078 - USD ($)	Dec. 31, 2025	Dec. 31, 2024
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	$ 2,121,268,007	$ 1,645,001,587
Level 1
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	2,121,268,007	1,645,001,587
Level 2
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	0	0
Level 3
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	0	0
Registered investment companies
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	34,502,735	817,401,369
Registered investment companies \| Level 1
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	34,502,735	817,401,369
Registered investment companies \| Level 2
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	0	0
Registered investment companies \| Level 3
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	0	0
Common/Collective Trusts
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	1,934,597,398	827,600,218
Common/Collective Trusts \| Level 1
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	1,934,597,398	827,600,218
Common/Collective Trusts \| Level 2
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	0	0
Common/Collective Trusts \| Level 3
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	0	$ 0
AMETEK Stock Fund
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	152,167,874
AMETEK Stock Fund \| Level 1
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	152,167,874
AMETEK Stock Fund \| Level 2
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	0
AMETEK Stock Fund \| Level 3
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	$ 0

- Definition

Fair value of investment, excluding plan interest in master trust, held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Includes, but is not limited to, derivative, investment measured at net asset value per share as practical expedient, and insurance contract not meeting fully-benefit responsive investment criteria.

+ References

+ Details

- 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

Fair Value Measurements

12 Months Ended

Dec. 31, 2025

EBP 078

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

Fair Value Measurements

The Plan utilizes a valuation hierarchy for disclosure of the inputs to the valuations used to measure fair value. This hierarchy prioritizes the inputs into three broad levels as follows. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument. Level 3 inputs are unobservable inputs based on the Plan’s own assumptions used to measure assets and liabilities at fair value. A financial asset or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement.

The following tables set forth by level, within the fair value hierarchy, the Plan’s assets at fair value:


	December 31, 2025
	Total		Level 1		Level 2		Level 3
Registered investment companies	$	34,502,735	$	34,502,735	$	—	$	—
Common/Collective Trusts	1,934,597,398		1,934,597,398		—		—
AMETEK Stock Fund	152,167,874		152,167,874		$	—	$	—
Investments, at Fair Value	$	2,121,268,007	$	2,121,268,007	$	—	$	—


	December 31, 2024
	Total		Level 1		Level 2		Level 3
Registered investment companies	$	817,401,369	$	817,401,369	$	—	$	—
Common/Collective Trusts	827,600,218		827,600,218		—		—
Investments, at Fair Value	$	1,645,001,587	$	1,645,001,587	$	—	$	—

- 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

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).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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-Name Accounting Standards Codification
-Section 50
-Paragraph 3
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-3

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478873/962-325-55-17

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 45
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477509/962-325-45-5

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-04(2)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-04(3)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-02(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 16: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 23
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-23

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 45
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477509/962-325-45-6

+ Details

Fully Benefit-Responsive Investment Contract	12 Months Ended
Fully Benefit-Responsive Investment Contract	Dec. 31, 2025
EBP 078
EBP, Fully Benefit-Responsive Investment Contract [Line Items]
Fully Benefit-Responsive Investment Contract	Fully Benefit-Responsive Investment Contract The Plan invests in a fully benefit-responsive synthetic guaranteed investment contract through a separate account, the Voya Stabilizer Fund (Separate Account for Ametek No. 920) (“Voya Separate Account”), established by Voya Retirement Insurance and Annuity Company (“VRIAC”). The Voya Stabilizer Fund is a participating separate account contract that combines an underlying fixed income investment strategy with a group annuity insurance contract (“wrap contract”). The wrap contract provides a guarantee of principal and accumulated interest and obligates VRIAC to maintain the “contract value” of the underlying investment. The contract value is generally equal to the principal amounts invested in the underlying investments, plus interest accrued at a crediting rate established under the contract, less any adjustments for withdrawals (as specified in the wrap agreement). Under the terms of the wrap contract, the realized and unrealized gains and losses of the underlying investments are, in effect, amortized over the duration of the underlying investments through adjustments to the future contract interest crediting rate. The wrap contract provides that the adjustments to the interest crediting rate will not result in a future interest crediting rate that is less than zero. In general, if the contract value exceeds the fair value of the underlying investments (including accrued interest), VRIAC becomes obligated to pay that difference to the Voya Separate Account in the event that redemptions result in a total contract liquidation. In the event that there are partial redemptions that would otherwise cause the contract’s crediting rate to fall below zero, VRIAC is obligated to contribute to the Voya Separate Account an amount necessary to maintain the contract’s crediting rate of at least zero percent. The interest crediting rate is typically reset on a quarterly basis. Over time, the crediting rate formula amortizes the Voya Separate Account’s realized and unrealized fair value gains and losses over the duration of the underlying investments. Because changes in market interest rates affect the yield to maturity and the fair value of the underlying investments, they can have a material impact on the contract’s interest crediting rate. In addition, participant withdrawals and transfers from the Voya Separate Account are paid at contract value but funded through the liquidation of the underlying investments at fair value, which also impacts the interest crediting rate. In certain circumstances, the amount withdrawn from the contract would be payable at fair value rather than at contract value. These events include termination of the Plan, a material adverse change to the provisions of the Plan, the employer elects to withdraw from a contract in order to switch to a different investment provider, or the terms of a successor plan (in the event of the spin-off or sale of a division) do not meet VRIAC’s underwriting criteria for issuance of a clone wrap contract. The Company believes that the events described above that could result in the payment of benefits at fair value rather than contract value are not probable of occurring in the foreseeable future. Examples of events that would permit VRIAC to terminate the wrap contract upon short notice include the Plan’s loss of its qualified status, un-cured material breaches of responsibilities, or material and adverse changes to the provisions of the Plan. If one of these events was to occur, VRIAC could terminate the wrap contract at the fair value of the underlying investments.

Statement of Changes in Net Assets Available for Benefits - EBP 078 - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Contributions:
Employer	$ 43,938,186	$ 39,637,227
Participant	83,961,899	75,358,359
Participant rollovers	17,882,177	7,229,675
EBP, Change in Net Asset Available for Benefit, Increase from Contribution, Total	145,782,262	122,225,261
Investment income (loss):
Net appreciation (depreciation) in fair value of investments	286,747,600	158,761,389
Interest and dividend income from investments	8,099,385	46,096,002
Increase (decrease) in Plan interest in the AMETEK, Inc. Master Trust	0	15,042,175
EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment	294,846,985	219,899,566
Interest income on notes receivable from participants	1,692,061	1,340,365
Total additions (reductions), net of investment gain (loss)	442,321,308	343,465,192
Deductions:
Benefits paid to participants	(277,892,627)	(223,920,262)
Administrative expenses	(964,389)	(1,406,628)
Total deductions	(278,857,016)	(225,326,890)
Net increase (decrease)	163,464,292	118,138,302
Asset transfers in due to Plan mergers	153,878,189	30,885,063
Net assets available for benefits:
Beginning of year	1,944,535,515	1,795,512,150
End of year	$ 2,261,877,996	$ 1,944,535,515

Schedule H, Line 4i – Schedule of Assets (Held At End of Year) (Details) - EBP 078	12 Months Ended
	Dec. 31, 2025 USD ($)
EBP, Schedule of Asset Held for Investment [Line Items]
Entity tax identification number	14-1682544
Plan number	078
Current Value	$ 2,231,099,374
Notes receivable from Participants	22,560,622
Total assets held for investment	$ 2,253,659,996
Minimum
EBP, Schedule of Asset Held for Investment [Line Items]
Notes receivable from participants interest rate	3.25%
Maximum
EBP, Schedule of Asset Held for Investment [Line Items]
Notes receivable from participants interest rate	9.50%
Investment, Identifier [Axis]: AMETEK Stock Fund \| AMETEK Stock Fund
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	$ 152,167,874
Investment, Identifier [Axis]: American Funds EuroPacific Growth Fund \| Registered Investment Company
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	33,145,623
Investment, Identifier [Axis]: FIAM U.S. Bond Index Commingled Pool Class D \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	49,610,861
Investment, Identifier [Axis]: Fidelity® Investments Money Market Treasury Portfolio - Class I \| Registered Investment Company
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	1,357,112
Investment, Identifier [Axis]: Invesco Stable Value Trust Class A1 \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	1,760,393
Investment, Identifier [Axis]: Jennison Small/Mid Cap Equity Fund \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	39,989,818
Investment, Identifier [Axis]: Reliance Trust MetLife Stable Value Fund Series 25053 Class 25 \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	995,737
Investment, Identifier [Axis]: Spartan® 500 Index Pool Class C \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	289,722,891
Investment, Identifier [Axis]: Spartan® Extended Market Index Pool Class C \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	69,242,199
Investment, Identifier [Axis]: Spartan® Total International Index Pool Class C \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	31,580,513
Investment, Identifier [Axis]: State Street Real Asset Fund \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	4,019,242
Investment, Identifier [Axis]: T. Rowe Price Structured Research Common Trust Fund Class D \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	247,555,220
Investment, Identifier [Axis]: Vanguard Target Retirement 2020 Trust I \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	71,651,015
Investment, Identifier [Axis]: Vanguard Target Retirement 2025 Trust I \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	185,194,435
Investment, Identifier [Axis]: Vanguard Target Retirement 2030 Trust I \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	231,967,863
Investment, Identifier [Axis]: Vanguard Target Retirement 2035 Trust I \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	205,642,140
Investment, Identifier [Axis]: Vanguard Target Retirement 2040 Trust I \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	135,289,326
Investment, Identifier [Axis]: Vanguard Target Retirement 2045 Trust I \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	110,224,351
Investment, Identifier [Axis]: Vanguard Target Retirement 2050 Trust I \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	91,169,987
Investment, Identifier [Axis]: Vanguard Target Retirement 2055 Trust I \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	62,222,970
Investment, Identifier [Axis]: Vanguard Target Retirement 2060 Trust I \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	29,588,110
Investment, Identifier [Axis]: Vanguard Target Retirement 2065 Trust I \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	14,518,748
Investment, Identifier [Axis]: Vanguard Target Retirement 2070 Trust I \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	3,216,174
Investment, Identifier [Axis]: Vanguard Target Retirement Income Trust I \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	49,358,005
Investment, Identifier [Axis]: Voya
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	$ 109,831,367
Investment, Identifier [Axis]: Voya Retirement Insurance Annuity Company Wrap Contract #60498 \| Interest rate of 2.49% at December 31, 2025
EBP, Schedule of Asset Held for Investment [Line Items]
Investments interest rate	2.49%
Current Value	$ 5,391,866
Investment, Identifier [Axis]: Voya Stabilizer Fund (Separate Account for Ametek No. 920) \| Separate Account
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	104,439,501
Investment, Identifier [Axis]: WTC-CIF II Core Bond Plus (Series 2) Portfolio \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Current Value	$ 10,077,400

Summary of Significant Accounting Policies	12 Months Ended
Summary of Significant Accounting Policies	Dec. 31, 2025
EBP 078
EBP, Accounting Policy [Line Items]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation The accompanying financial statements have been prepared on the accrual basis of accounting in accordance with U.S. generally accepted accounting principles (“GAAP”). Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires Plan management to make estimates and assumptions that affect amounts reported in the financial statements and accompanying notes, and supplemental schedule. Actual results could differ from those estimates and assumptions. Notes Receivable from Participants Notes receivable from participants represent participant loans that are recorded at their unpaid principal balance plus any accrued but unpaid interest. Interest income on notes receivable from participants is recorded when it is earned. Related fees are paid from participants’ accounts. If a participant ceases to make loan repayments and the plan administrator deems the participant loan to be a distribution, the participant loan balance is reduced, and a benefit payment is recorded. Contributions Participant contributions and the matching employer contributions are recorded in the year in which the participant contributions are withheld from compensation. Risks and Uncertainties The Plan invests in various investment securities. Investment securities are exposed to various risks such as interest rate, market fluctuation and credit risks. Due to the level of risk associated with certain investment securities, it is at least reasonably possible that changes in the values of investment securities will occur in the near term and that such changes could materially affect participants’ account balances and the amounts reported in the statements of net assets available for benefits. Investment Valuation and Income Recognition The Plan’s investments are stated at fair value, except for the fully benefit-responsive investment contract, which is stated at contract value. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. See Notes 1 and 4 for further discussion and disclosures related to fair value measurements. Investments in shares of registered investment companies and short term investment funds are valued at quoted market prices, which represent the net asset values of shares held by the Plan at year end. Investments in common/collective trusts have readily determinable fair values and are valued based on the net asset value of participation units held by the Plan at year end. There are no redemption restrictions on these investments and purchases and sales may occur on a daily basis. The AMETEK common stock is valued at the closing price reported in an active market. Purchases and sales of investments are reflected on trade dates. Realized gains and losses on sales of investments are based on the average cost of such investments. Interest income is recorded on the accrual basis. Dividend income is recorded on the ex-dividend date. Income from other investments is recorded as earned. Plan investments do not have significant costs to sell. Net appreciation (depreciation) includes the Plan's realized and unrealized gains and losses as well as investments held at year-end.

Description of the Plan - Changes in the Assets Held by the Master Trust (Details) - EBP 078 - USD ($)							12 Months Ended
	Dec. 29, 2025	Mar. 13, 2025	Feb. 13, 2025	Dec. 31, 2024	Apr. 01, 2024	Mar. 20, 2024	Dec. 31, 2025	Dec. 31, 2024
EBP, Description of Plan [Line Items]
Net appreciation (depreciation) in fair value of investments							$ 286,747,600	$ 158,761,389
Interest and dividend income from investments							8,099,385	46,096,002
Asset transfers in due to Plan mergers	$ 54,951,000	$ 17,000	$ 98,910,000	$ 8,566,000	$ 19,141,000	$ 3,178,000	153,878,189	30,885,063
Net increase (decrease)							163,464,292	118,138,302
Beginning of year							1,944,535,515	1,795,512,150
End of year				1,944,535,515			2,261,877,996	1,944,535,515
Master Trust Balances
EBP, Description of Plan [Line Items]
Net appreciation (depreciation) in fair value of investments							0	13,919,810
Interest and dividend income from investments							0	1,067,614
Transfers in							0	12,439,409
Transfers out							0	(29,391,795)
Asset transfers in due to Plan mergers							(152,693,316)	0
Net increase (decrease)							(152,693,316)	(1,964,962)
Beginning of year							152,693,316	154,658,278
End of year				$ 152,693,316			$ 0	$ 152,693,316

Cover	12 Months Ended
Cover	Dec. 31, 2025
Document Information [Line Items]
Document Type	11-K
Entity Registrant Name	AMETEK, Inc.
Amendment Flag	false
Entity Central Index Key	0001037868
EBP 078
Document Information [Line Items]
Document Type	11-K
Entity Registrant Name	AMETEK, Inc.
Amendment Flag	false
Entity Central Index Key	0001037868

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2025
EBP 078
EBP, Subsequent Event [Line Items]
Subsequent Events	Subsequent EventsEffective January 1, 2026, the Plan was amended to designate participants of FARO 401(k) Plan as participating employees in the Plan. As a result, assets totaling $76,095,150 were transferred from the FARO 401(k) Plan into the Plan’s Trust on March 31, 2026.

Subsequent Events (Details) - EBP 078 - USD ($)								12 Months Ended
Subsequent Events (Details) - EBP 078 - USD ($)	Mar. 31, 2026	Dec. 29, 2025	Mar. 13, 2025	Feb. 13, 2025	Dec. 31, 2024	Apr. 01, 2024	Mar. 20, 2024	Dec. 31, 2025	Dec. 31, 2024
EBP, Subsequent Event [Line Items]
Asset transfers in due to Plan mergers		$ 54,951,000	$ 17,000	$ 98,910,000	$ 8,566,000	$ 19,141,000	$ 3,178,000	$ 153,878,189	$ 30,885,063
Subsequent Event
EBP, Subsequent Event [Line Items]
Asset transfers in due to Plan mergers	$ 76,095,150