Cash and Cash Equivalents (Excluding Overdrafts) - Summary of Cash and Cash Equivalents (Detail) - GBP (£) £ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash and cash equivalents [line items]
Cash at bank and in hand	£ 312	£ 269
Short-term bank deposits	0	289
Cash and cash equivalents	312	558
Bank overdrafts	(3)	(15)
Cash and cash equivalents in the cash flow statement	309	543	£ 937	£ 1,113
Total	£ 312	£ 558

The amount that has been withdrawn from an account in excess of existing cash balances.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]

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

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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]

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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]

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

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Cash and cash equivalents1 [line items].

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Cash and cash equivalents including held for sale.

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