XML 56 R8.htm IDEA: XBRL DOCUMENT
v3.19.2

Basis of accounting | 6 Months Ended
--- | ---
Jun. 30, 2019
Text block [abstract] |
Basis of accounting |
1. | Basis of accounting
The unaudited condensed consolidated interim financial statements are prepared under the historical cost convention, except for the revaluation of certain financial instruments as disclosed in our accounting policies.

X
- Definition The disclosure of the basis used for the preparation of the financial statements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_10_e&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Text block [abstract] + References No definition available. + Details
Name: | wpp_TextBlockAbstract
Namespace Prefix: | wpp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration