Number of major product categories

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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

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

The nominal value per share.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The amount of undrawn borrowing facilities that may be available for future operating activities and to settle capital commitments. [Refer: Capital commitments]

+ References

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BASIS OF PREPARATION AND SIGNIFICANT ACCOUNTING POLICIES- Narrative (Details) £ / shares in Units, £ in Millions, $ in Billions	6 Months Ended
	Jun. 30, 2023 GBP (£) £ / shares	Jun. 30, 2023 USD ($)	Dec. 31, 2022 GBP (£) £ / shares	Jun. 30, 2022 GBP (£) £ / shares	Dec. 31, 2021 GBP (£)
Disclosure of information about consolidated structured entities [line items]
Number of major product categories	5
Cash and cash equivalents net of bank overdrafts	£ 461		£ 611	£ 1,067	£ 406
Ordinary shares
Disclosure of information about consolidated structured entities [line items]
Nominal value per share \| £ / shares	£ 0.01		£ 0.01	£ 1.00
September 2023
Disclosure of information about consolidated structured entities [line items]
Undrawn credit facilities \| $		$ 1.4
September 2025
Disclosure of information about consolidated structured entities [line items]
Undrawn credit facilities	£ 1,000