Trade and other payables - Amounts falling due after more than one year - Summary of deferred and Earnout related obligations (Detail) £ in Millions	Jun. 30, 2023 GBP (£)
Trade and other non-current payables [abstract]
At the beginning of the period	£ 160.1
At the end of the period	£ 187.9

Contingent consideration current and non-current payable to vendors (earnout agreements).

No definition available.

Name:	wpp_ContingentConsiderationCurrentAndNoncurrentPayableToVendors
Namespace Prefix:	wpp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant