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Consolidated statement of changes in equity (Parenthetical) - GBP (£) £ in Millions	1 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of changes in equity [abstract]
Reserve of gains and losses on hedging instruments that hedge investments in equity instruments	£ 354	£ 347	£ 344
Cancellation of treasury shares (in shares)	50,367,570

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- Definition

A component of equity representing the accumulated gains and losses on hedging instruments that hedge investments in equity instruments that the entity has designated at fair value through other comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 78
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_e&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_ReserveOfGainsAndLossesOnHedgingInstrumentsThatHedgeInvestmentsInEquityInstruments
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- References

No definition available.

+ Details

Name:	ifrs-full_StatementOfChangesInEquityAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Cancellation of Treasury Shares, Shares

+ References

No definition available.

+ Details

Name:	wpp_CancellationOfTreasurySharesShares
Namespace Prefix:	wpp_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration