XML 121 R109.htm IDEA: XBRL DOCUMENT
v3.20.4

Analysis of cash flows - Summary of Analysis of Cash Flows (Parenthetical) (Detail) - Dec. 31, 2019 | GBP (£) | USD ($) | EUR (€)
--- | --- | --- | ---
Disclosure Of Cash Flow Statement [line items] |  |  |
Bond amount | £ | £ 6,309,800,000 |  |
Repayment of EURO 600 million bonds [member] |  |  |
Disclosure Of Cash Flow Statement [line items] |  |  |
Bond amount |  |  | € 600,000,000
Repayment of USD 812 million bonds [member] |  |  |
Disclosure Of Cash Flow Statement [line items] |  |  |
Bond amount | $ |  | $ 812,000,000 |
Partial repayment of USD 272 million bonds [member] |  |  |
Disclosure Of Cash Flow Statement [line items] |  |  |
Bond amount | $ |  | 272,000,000 |
Partial repayment of USD 450 million bonds [member] |  |  |
Disclosure Of Cash Flow Statement [line items] |  |  |
Bond amount | $ |  | $ 450,000,000 |
Repayment of GBP 200 million bonds [member] |  |  |
Disclosure Of Cash Flow Statement [line items] |  |  |
Bond amount | £ | 200,000,000 |  |
Proceeds from issue of EURO 250 million bonds [member] |  |  |
Disclosure Of Cash Flow Statement [line items] |  |  |
Bond amount |  |  | 250,000,000
Proceeds from issue of EURO 500 million bonds [member] |  |  |
Disclosure Of Cash Flow Statement [line items] |  |  |
Bond amount |  |  | 500,000,000
Repayment of EURO 252 million bonds [member] |  |  |
Disclosure Of Cash Flow Statement [line items] |  |  |
Bond amount |  |  | € 252,000,000
Repayment of GBP 400 million bonds [member] |  |  |
Disclosure Of Cash Flow Statement [line items] |  |  |
Bond amount | £ | £ 400,000,000 |  |

X
- Definition The nominal or face amount of a financial instrument, used to calculate payments made on that instrument. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_NotionalAmount
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Disclosure of cash flow statement + References No definition available. + Details
Name: | wpp_DisclosureOfCashFlowStatementLineItems
Namespace Prefix: | wpp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=wpp_RepaymentOfEuro600MillionBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=wpp_RepaymentOfUsd812MillionBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=wpp_PartialRepaymentOfUsd272MillionBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=wpp_PartialRepaymentOfUsd450MillionBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=wpp_RepaymentOfGbp200MillionBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=wpp_ProceedsFromIssueOfEuro250MillionBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=wpp_ProceedsFromIssueOfEuro500MillionBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=wpp_RepaymentOfEuro252MillionBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=wpp_RepaymentOfGBP400MillionBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |