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v3.25.1

Trade and other receivables - Additional Information (Details) - GBP (£) £ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Trade and other receivables [abstract] |  |  |
Allowance for bad and doubtful debts as a percentage of gross trade accounts receivables | 0.50% | 0.60% | 1.00%
Plans in surplus | £ 18 | £ 14 |

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- References No definition available. + Details
Name: | ifrs-full_TradeAndOtherReceivablesAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Allowance for bad and doubtful debts percentage. + References No definition available. + Details
Name: | wpp_AllowanceForBadAndDoubtfulDebtsPercentage
Namespace Prefix: | wpp_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Plans in surplus. + References No definition available. + Details
Name: | wpp_PlansInSurplus
Namespace Prefix: | wpp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant