Investments - Fair Value Hierarchy of the Plan's Investments (Details) - EBP 003 - USD ($)	Dec. 31, 2025	Dec. 31, 2024
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	$ 1,126,868,935	$ 1,018,298,119
Mutual funds
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	352,793,576	321,739,845
Common collective trusts
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	727,005,383	645,420,589
Perrigo Company plc ordinary shares
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	4,647,526	8,039,371
Money market fund
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	42,422,450	43,098,314
Level 1
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	399,863,552	372,877,530
Level 1 \| Mutual funds
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	352,793,576	321,739,845
Level 1 \| Common collective trusts
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	0	0
Level 1 \| Perrigo Company plc ordinary shares
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	4,647,526	8,039,371
Level 1 \| Money market fund
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	42,422,450	43,098,314
Level 2
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	727,005,383	645,420,589
Level 2 \| Mutual funds
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	0	0
Level 2 \| Common collective trusts
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	727,005,383	645,420,589
Level 2 \| Perrigo Company plc ordinary shares
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	0	0
Level 2 \| Money market fund
EBP, Investment, Fair Value and NAV [Line Items]
Investments, at fair value	$ 0	$ 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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