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Condensed consolidating financial information for bonds issued by WPP Finance 2010 with WPP plc as parent guarantor and WPP Air 1, WPP 2008 Limited, WPP 2005 Limited, WPP 2012 Limited, and WPP Jubilee Limited as subsidiary guarantors - Condensed Consolidating Balance Sheet Information (Parenthetical) (Detail) £ in Millions	Dec. 31, 2017 GBP (£)
Guarantor Subsidiaries and Other Subsidiaries [member] | Condensed Consolidating Financial Information for Bonds Issued by WPP Finance 2010 with WPP plc as Parent Guarantor and WPP Air 1, WPP 2008 Limited, WPP 2005 Limited, WPP 2012 Limited, and WPP Jubilee Limited as Subsidiary Guarantors [member]
Disclosure of detailed information of condensed consolidating financial information [line items]
Restatement for intercompany receivables and intercompany payables	£ 2,540.2

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- Definition

Line items represents detailed information of condensed consolidated financial information.

+ References

No definition available.

+ Details

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- Definition

Restated Intercompany receivables and intercompany payables.

+ References

No definition available.

+ Details

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Namespace Prefix:	wpp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- Details

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- Details

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Namespace Prefix:
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