Interests in subsidiaries - Summary of Financial Information of Subsidiaries Subject to Significant Restrictions (Details) - GBP (£) £ in Millions	Dec. 31, 2024	Dec. 31, 2023
Summarised Financial Information of Subsidiaries with Material Non-controlling Interests [Line Items]
Non-current assets	£ 104,605	£ 104,530
Current assets	14,294	14,186
Non-current liabilities	(50,161)	(50,109)
Current liabilities	(18,743)	(15,673)
Imperial Tobacco Canada
Summarised Financial Information of Subsidiaries with Material Non-controlling Interests [Line Items]
Non-current assets	3,946	2,471
Current assets	2,904	2,621
Non-current liabilities	(3,814)	(103)
Current liabilities	(2,811)	(494)
Net assets (liabilities)	£ 225	£ 4,495

Summarised financial information of subsidiaries with material non-controlling interests.

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The amount of assets that the entity (a) expects to realise or intends to sell or consume in its normal operating cycle; (b) holds primarily for the purpose of trading; (c) expects to realise within twelve months after the reporting period; or (d) classifies as cash or cash equivalents (as defined in IAS 7) unless the asset is restricted from being exchanged or used to settle a liability for at least twelve months after the reporting period. [Refer: Assets]

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The amount of liabilities that: (a) the entity expects to settle in its normal operating cycle; (b) the entity holds primarily for the purpose of trading; (c) are due to be settled within twelve months after the reporting period; or (d) the entity does not have the right at the end of the reporting period to defer settlement for at least twelve months after the reporting period.

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The amount of assets less the amount of liabilities.

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The amount of assets that do not meet the definition of current assets. [Refer: Current assets]

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The amount of liabilities that do not meet the definition of current liabilities. [Refer: Current liabilities]

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