XML 86 R74.htm IDEA: XBRL DOCUMENT
v3.20.4

Accounting policies - IFRS 16 Implementation - Additional Information (Detail) - GBP (£) £ / shares in Units, £ in Millions |  | 12 Months Ended
--- | --- | ---
Jan. 01, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | [2]
Disclosure of initial application of standards or interpretations [line items] |  |  |  |  |  |
Right-of-use assets | [1] |  | £ 1,734.5 |  |  |
Lease liabilities |  |  | 2,249.7 |  |  |
Change in operating profit |  |  | £ 61.0 |  |  |
Weighted average discount rate |  | 5.40% |  |  |  |
Retained earnings |  | £ 128.9 |  |  |  |
Deferred tax assets |  | 27.8 |  |  |  |
Diluted earnings per share | [1] |  | £ 0.679 | £ 0.654 | [2] | £ 1.539
Impact on Initial Application of IFRS16 [member] |  |  |  |  |  |
Disclosure of initial application of standards or interpretations [line items] |  |  |  |  |  |
Right-of-use assets |  | 1,895.1 |  | £ 1,895.1 |  |
Lease liabilities |  | 2,326.2 |  | £ 2,326.2 |  |
Reduction in other creditors |  | 233.5 |  |  |  |
Reduction in property provisions |  | £ 68.7 |  |  |  |
Diluted earnings per share |  |  | £ (0.018) |  |  |
[1] | Figures have been restated, as described in the accounting policies.
[2] | Prior year figures have been re-presented in accordance with IFRS 5 Non-current Assets Held for Sale and Discontinued Operations, as described in the accounting policies.

X
- Definition The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator), divided by the weighted average number of ordinary shares outstanding during the period (the denominator), both adjusted for the effects of all dilutive potential ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2019-01-01 -Paragraph 66 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2019-en-r&anchor=para_66&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_DilutedEarningsLossPerShare
Namespace Prefix: | ifrs-full_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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_DisclosureOfInitialApplicationOfStandardsOrInterpretationsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2019-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2019-en-r&anchor=para_47_b&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_LeaseLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of assets that represent a lessee's right to use an underlying asset for the lease term. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2019-01-01 -Paragraph 53 -Subparagraph j -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2019-en-r&anchor=para_53_j&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_RightofuseAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Change in operating profit. + References No definition available. + Details
Name: | wpp_ChangeInOperatingProfit
Namespace Prefix: | wpp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Decrease to retained earnings due to the adoption of IFRS 16. + References No definition available. + Details
Name: | wpp_DecreasetoRetainedEarningsDueToTheAdoptionOfIFRS16
Namespace Prefix: | wpp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Increase decrease to deferred tax assets due to the adoption of IFRS 16. + References No definition available. + Details
Name: | wpp_IncreaseDecreaseToDeferredTaxAssetsDueToTheAdoptionOfIfrs16
Namespace Prefix: | wpp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reduction in other creditors. + References No definition available. + Details
Name: | wpp_ReductionInOtherCreditors
Namespace Prefix: | wpp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Reduction in property provisions. + References No definition available. + Details
Name: | wpp_ReductionInPropertyProvisions
Namespace Prefix: | wpp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Weighted Average Discount Rate. + References No definition available. + Details
Name: | wpp_WeightedAverageDiscountRate
Namespace Prefix: | wpp_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_InitiallyAppliedIFRSsAxis=wpp_ImpactOnInitialApplicationOfIfrs16Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |