XML 89 R77.htm IDEA: XBRL DOCUMENT
v3.20.4

Accounting policies - Summary of Estimated Useful Life of Property, Plant and Equipment (Detail) | 12 Months Ended
--- | ---
Dec. 31, 2019
Freehold buildings [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Property, plant and equipment, estimated useful life | 50 years
Leasehold land and buildings [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Property, plant and equipment, estimated useful life | over the term of the lease or life of the asset, if shorter.
Bottom of range [member] | Fixtures, fittings and equipment [Member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Property, plant and equipment, estimated useful life | 3 years
Bottom of range [member] | Computer equipment [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Property, plant and equipment, estimated useful life | 3 years
Top of range [member] | Fixtures, fittings and equipment [Member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Property, plant and equipment, estimated useful life | 10 years
Top of range [member] | Computer equipment [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Property, plant and equipment, estimated useful life | 5 years

X
- Definition Description of useful life used for property, plant and equipment. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2019-01-01 -Paragraph 73 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2019-en-r&anchor=para_73_c&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_DescriptionOfUsefulLifePropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
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_DisclosureOfPropertyPlantAndEquipmentLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Property plant and equipment estimated useful life. + References No definition available. + Details
Name: | wpp_PropertyPlantAndEquipmentEstimatedUsefulLife
Namespace Prefix: | wpp_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=wpp_FreeholdBuildingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=wpp_LeaseholdLandAndBuildingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_FixturesAndFittingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_ComputerEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |