Investments in Joint Ventures and Associates - Additional Information (Detail) - GBP (£) £ in Millions	Dec. 31, 2023	Dec. 31, 2022
Investments in associates and joint ventures [line items]
Percentage of voting equity interests acquired	49.00%
Investments in associates reported in separate financial statements	£ 22	£ 25
Contingent consideration recognised as of acquisition date	5
Academy of Pop [Member]
Investments in associates and joint ventures [line items]
Investments in associates reported in separate financial statements	£ 13	£ 9

The amount, at acquisition date, of contingent consideration arrangements recognised as consideration transferred in a business combination. [Refer: Business combinations [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2023-01-01
-Paragraph B64
-Subparagraph g
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- Definition

The amount of investments in associates in an entity's separate financial statements. [Refer: Associates [member]]

+ References

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

The percentage of voting equity interests acquired in a business combination. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Number 3
-IssueDate 2023-01-01
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- Definition

Investments in associates and joint ventures.

+ References

No definition available.

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