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Our people - Summary of Reportable Segment Distribution of Staff (Details) - number_of_employee	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disclosure of operating segments [line items]
Average number of staff	111,281	114,732	114,129
Global Integrated Agencies
Disclosure of operating segments [line items]
Average number of staff	95,053	97,838	97,288
Public Relations
Disclosure of operating segments [line items]
Average number of staff	7,742	8,377	8,125
Specialist Agencies
Disclosure of operating segments [line items]
Average number of staff	8,486	8,517	8,716

X

- Definition

The average number of personnel employed by the entity during a period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-IssueDate 2024-01-01
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-URIDate 2024-03-27

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- 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.

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