XML 72 R63.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Ordinary dividends - Additional Information (Detail) - £ / shares | 6 Months Ended
--- | ---
Jun. 30, 2018 | Jun. 30, 2017
Interim period amount [member] |  |
Disclosure of Dividends [line items] |  |
Amounts recognized as distributions to equity holders, per share | £ 0.227 | £ 0.227
Dividends payable date | Nov. 05, 2018 |
Previous period final amount [member] |  |
Disclosure of Dividends [line items] |  |
Amounts recognized as distributions to equity holders, per share | £ 0.373 |
Dividends paid date | Jul. 09, 2018 |

X
- Definition The amount of dividends paid per ordinary share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 34 -IssueDate 2017-01-01 -Paragraph 16A -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=34&date=2017-03-01&anchor=para_16A_f&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_DividendsPaidOrdinarySharesPerShare
Namespace Prefix: | ifrs-full_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of Dividends [Line Items] + References No definition available. + Details
Name: | wpp_DisclosureOfDividendsLineItems
Namespace Prefix: | wpp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Dividend paid date. + References No definition available. + Details
Name: | wpp_DividendPaidDate
Namespace Prefix: | wpp_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Dividend payable date. + References No definition available. + Details
Name: | wpp_DividendPayableDate
Namespace Prefix: | wpp_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_MaturityAxis=wpp_InterimPeriodAmountMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=wpp_PreviousPeriodFinalAmountMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |