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Cash and cash equivalents - Cash Reconciliation (Details) - GBP (£) £ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash And Cash Equivalents And Adjusted Net Debt [Abstract]
Cash	£ 1,983	£ 2,037
Money market funds	655	181
Cash and cash equivalents	2,638	2,218	£ 2,492
Bank overdrafts	(171)	(358)	(506)
Cash and cash equivalents	£ 2,467	£ 1,860	£ 1,986	£ 3,541

X

- Definition

The amount that has been withdrawn from an account in excess of existing cash balances. This is considered a short-term extension of credit by the bank. [Refer: Cash and cash equivalents]

+ References

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

The amount of cash on hand and demand deposits. [Refer: Cash on hand]

+ References

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- Definition

The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]

+ References

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- Definition

The amount of cash and cash equivalents in the statement of cash flows when different from the amount of cash and cash equivalents in the statement of financial position. [Refer: Cash and cash equivalents]

+ References

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- Definition

A classification of cash equivalents representing short-term deposits. [Refer: Cash equivalents]

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Cash And Cash Equivalents And Adjusted Net Debt

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