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Sources of estimation uncertainty and significant accounting judgements (Details) - GBP (£) £ in Millions	1 Months Ended
	Oct. 31, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Sources of estimation uncertainty and significant accounting judgements
Intangible assets		£ 7,108	£ 7,042	£ 7,303
Indefinite lived brands | Terminix CGU
Sources of estimation uncertainty and significant accounting judgements
Intangible assets	£ 1,292
Useful life, if assets had finite useful life	15 years
Amortisation charge, if assets had finite useful life	£ 86

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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.

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- Definition

The amount of intangible assets and goodwill held by the entity. [Refer: Goodwill; Intangible assets other than goodwill]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

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- Definition

Hypothetical useful life measured as period of time, if assets had finite useful life

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