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v3.23.2

Going concern and liquidity risk (Detail) | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Forecast |  |
Liquidity [Line Items] |  |
Percentage weakening of revenue less pass-through costs | 0.12 | 0.18

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- Definition Liquidity [Line Items] + References No definition available. + Details
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Namespace Prefix: | wpp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage Weakening of Revenue Less Pass-Through Costs + References No definition available. + Details
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Namespace Prefix: | wpp_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |