The expected volatility of the share price used to calculate the fair value of the share options granted. Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2023-01-01
-Paragraph 47
-Subparagraph a
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_47_a_i&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_DescriptionOfExpectedVolatilityShareOptionsGranted
Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The implied yield currently available on zero-coupon government issues of the country in whose currency the exercise price for share options granted is expressed, with a remaining term equal to the expected term of the option being valued (based on the option's remaining contractual life and taking into account the effects of expected early exercise). [Refer: Government [member]]

+ References

+ Details

Name:	ifrs-full_DescriptionOfRiskFreeInterestRateShareOptionsGranted
Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of an expected dividend used to calculate the fair value of share options granted.

+ References

+ Details

Name:	ifrs-full_ExpectedDividendAsPercentageShareOptionsGranted
Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The weighted average share price used as input to the option pricing model to calculate the fair value of share options granted. [Refer: Option pricing model [member]; Weighted average [member]]

+ References

+ Details

Name:	ifrs-full_WeightedAverageSharePriceShareOptionsGranted2019
Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value assumptions expected life.

+ References

No definition available.

+ Details

Name:	wpp_FairValueAssumptionsExpectedLife
Namespace Prefix:	wpp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Weighted average assumptions.

+ References

No definition available.

+ Details

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

- Details

Name:	ifrs-full_GeographicalAreasAxis=country_GB
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfShareCapitalAxis=wpp_AmericanDepositoryReceiptsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_GeographicalAreasAxis=country_US
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Share-based payments - Weighted Average Fair Value of Options Granted and Weighted Average Assumptions (Details)	12 Months Ended
	Dec. 31, 2023 £ / shares	Dec. 31, 2023 $ / shares	Dec. 31, 2022 £ / shares	Dec. 31, 2022 $ / shares	Dec. 31, 2021 £ / shares	Dec. 31, 2021 $ / shares
Weighted Average Assumptions [abstract]
Fair Value Assumptions Expected Life	48 months	48 months	48 months	48 months	48 months	48 months
Expected volatility, share options granted	33.00%	33.00%	32.00%	32.00%	34.00%	34.00%
Expected dividend as percentage, share options granted	5.60%	5.60%	3.90%	3.90%	3.40%	3.40%
United Kingdom
Weighted Average Assumptions [abstract]
Risk-free interest rate	4.00%	4.00%	2.92%	2.92%	0.63%	0.63%
United Kingdom \| American depository receipts
Disclosure of terms and conditions of share-based payment arrangement [Line items]
Fair value of options \| £ / shares	£ 1.310		£ 1.770		£ 2.200
United States
Weighted Average Assumptions [abstract]
Risk-free interest rate	4.53%	4.53%	4.09%	4.09%	1.16%	1.16%
United States \| American depository receipts
Disclosure of terms and conditions of share-based payment arrangement [Line items]
Fair value of options \| $ / shares		$ 8.59		$ 11.48		$ 14.89