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Bank overdrafts, bonds and bank loans - Bank Overdrafts, Bonds and Bank Loans Amounts Falling Due Within One Year (Detail) - GBP (£) £ in Millions	Dec. 31, 2018	Dec. 31, 2017		Dec. 31, 2016
Disclosure of bank overdraft bonds and bank loans [abstract]
Bank overdrafts	£ 442.0	£ 393.2		£ 534.3
Corporate bonds and bank loans	583.1	230.9
Bank overdrafts, bonds and bank loans	£ 1,025.1	£ 624.1	[1]
[1] Prior year figures have been restated for the impact of the adoption of IFRS 15 Revenue from Contracts with Customers, as described in the accounting policies.

X

- Definition

The amount that has been withdrawn from an account in excess of existing cash balances. This is considered a short-term extension of credit by the bank. [Refer: Cash and cash equivalents]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2018-01-01
-Paragraph 45
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2018-03-01&anchor=para_45&doctype=Standard
-URIDate 2018-03-16

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X

- Definition

The amount of current borrowings and current portion of non-current borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2018-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_55&doctype=Standard
-URIDate 2018-03-16

+ Details

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Balance Type:	credit
Period Type:	instant

X

- Definition

Bank overdrafts and the amount of current bonds and bank loans.

+ References

No definition available.

+ Details

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Namespace Prefix:	wpp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Disclosure of bank overdraft bonds and bank loans.

+ References

No definition available.

+ Details

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