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Trade and other payables - Summary of Trade and Other Payables, Amounts Falling Due within One Year (Detail) - GBP (£) £ in Millions | Jun. 30, 2020 | Dec. 31, 2019 | Jun. 30, 2019
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Trade and other current payables [abstract] |  |  |  |
Trade payables |  | £ 7,279.2 | £ 10,112.1 | £ 9,945.7
Deferred income |  | 968.7 | 1,024.6 | 1,377.3
Payments due to vendors (earnout agreements) |  | 65.4 | 142.4 | 167.6
Liabilities in respect of put option agreements with vendors |  | 47.0 | 75.4 | 41.4
Fair value of derivatives |  | 2.7 | 1.5 | 4.0
Share repurchases - close period commitments | [1] |  | 252.3 |
Other creditors and accruals |  | 2,409.3 | 2,578.5 | 2,829.7
Total |  | £ 10,772.3 | £ 14,186.8 | £ 14,365.7
[1] | During 2019, the Company entered into an arrangement with a third party to conduct share buybacks on its behalf in the close period commencing on 2 January 2020 and ending on 27 February 2020, in accordance with UK listing rules. The commitment resulting from this agreement constitutes a liability at 31 December 2019, which is included in Trade and other payables: amounts falling due within one year and has been recognised as a movement in equity.

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- Definition The current amount of payment due to suppliers for goods and services used in entity's business. [Refer: Current liabilities; Trade payables] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 78 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_78&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 70 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_70&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition Share purchases close period commitments. + References No definition available. + Details
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