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Leases - Lease liabilities by currency (Details) - GBP (£) £ in Millions	Dec. 31, 2023	Dec. 31, 2022	Oct. 12, 2022	Dec. 31, 2021
Leases
Lease liabilities	£ 445	£ 460		£ 217
Measurement period adjustments
Leases
Lease liabilities		(7)	£ (8)
Pound sterling
Leases
Lease liabilities	34	34
Euro
Leases
Lease liabilities	63	61
US dollar
Leases
Lease liabilities	289	307
Other currencies
Leases
Lease liabilities	£ 59	£ 58

X

- Definition

The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2023-01-01
-Paragraph 47
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2023-en-r&anchor=para_47_b&doctype=Standard
-URIDate 2023-03-23

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- 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.

+ Details

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Period Type:	duration

X

- Details

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- Details

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Namespace Prefix:
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X

- Details

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X

- Details

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Namespace Prefix:
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- Details

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