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Trade and other payables - Summary of Trade and Other Payables, Amounts Falling Due within One Year (Detail) - GBP (£) £ in Millions | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
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Trade and other current payables [abstract] |  |  |  |
Trade payables | [1] | £ 10,112.1 | £ 10,524.3 |
Deferred income | [1] | 1,024.6 | 1,253.6 |
Payments due to vendors (earnout agreements) | [1] | 143.4 | 149.1 |
Liabilities in respect of put option agreements with vendors | [1] | 75.7 | 19.4 |
Fair value of derivatives | [1] | 1.5 | 2.6 |
Share repurchases - close period commitments | [1],[2] | 252.3 |  |
Other creditors and accruals | [1] | 2,578.5 | 3,072.9 |
Total | [3] | £ 14,188.1 | £ 15,021.9 | £ 14,239.5
[1] | Figures have been restated to be in accordance with IAS 39 Financial Instruments: Recognition and Measurement, as described in the accounting policies of the consolidated financial statements.
[2] | 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.
[3] | Figures have been restated, as described in the accounting policies.

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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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