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Taxation (Detail)	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Taxation [Abstract]
Average effective tax rate	28.10%	27.20%

X

- Definition

The tax expense (income) divided by the accounting profit. [Refer: Accounting profit]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2022-03-24
-Paragraph 81
-Subparagraph c
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2022-en-r&anchor=para_81_c_ii&doctype=Standard
-URIDate 2022-03-24

+ Details

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Balance Type:	na
Period Type:	duration

X

- Definition

Taxation

+ References

No definition available.

+ Details

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Namespace Prefix:	wpp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration