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

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.

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+ 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.

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