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Finance and investment income, finance costs and revaluation and retranslation of financial instruments (Detail) - GBP (£) £ in Millions | 6 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021
Finance and investment income, finance costs and revaluation and retranslation of financial instruments [Abstract] |  |
Income from equity investments | £ 20.1 | £ 5.0
Interest income | 35.4 | 25.1
Finance income | 55.5 | 30.1
Interest payable and similar charges | 98.9 | 101.5
Interest expense related to lease liabilities | 46.0 | 45.7
Finance costs | 144.9 | 147.2
Movements in fair value of treasury instruments | 1.9 | 4.7
Premium on the early repayment of bonds | 0.0 | (13.1)
Revaluation of investments held at fair value through profit or loss | 9.0 | 30.5
Revaluation of put options over non-controlling interests | 19.6 | (44.4)
Revaluation of payments due to vendors (earnout agreements) | (1.1) | (9.4)
Retranslation of financial instruments | 3.7 | 19.6
Revaluation and retranslation of financial instruments | £ 33.1 | £ (12.1)

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- Definition The amount of costs associated with financing activities of the entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 82 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_82_b&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of income associated with interest and other financing activities of the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 85 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_85&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of interest expense on borrowings. [Refer: Interest expense; Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of interest expense on lease liabilities. [Refer: Lease liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2022-03-24 -Paragraph 53 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2022-en-r&anchor=para_53_b&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of interest income on debt instruments held. [Refer: Interest income; Debt instruments held] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of investment income, such as interest and dividends. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 26 -IssueDate 2022-03-24 -Paragraph 35 -Subparagraph b -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2022-en-r&anchor=para_35_b_iii&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 85 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_85&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition Finance and investment income, finance costs and revaluation and retranslation of financial instruments + References No definition available. + Details
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- Definition Gains losses in fair value of treasury instruments. + References No definition available. + Details
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