XML 114 R119.htm IDEA: XBRL DOCUMENT
v3.20.1

Intangible assets - Movement of Goodwill (Parenthetical) (Detail) £ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 GBP (£)
Disclosure of reconciliation of changes in goodwill [line items] |  |
Impairment on Classification As Held for Sale for Kantar Group | £ 94.5 | [1]
Accumulated impairment [member] |  |
Disclosure of reconciliation of changes in goodwill [line items] |  |
Impairment on Classification As Held for Sale for Kantar Group | £ 70.9 |
[1] | Goodwill impairment of £94.5 million arose from the assessment of fair value less costs to sell under IFRS 5.

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Goodwill impairment on classification as held for sale. + References No definition available. + Details
Name: | wpp_GoodwillImpairmentOnClassificationAsHeldForSale
Namespace Prefix: | wpp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=ifrs-full_AccumulatedImpairmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |