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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, 2019 | Dec. 31, 2018 | Jun. 30, 2018
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Trade and other current payables [abstract] |  |  |
Trade payables | £ 9,945.7 | £ 10,524.3 | £ 9,611.7
Deferred income | 1,377.3 | 1,253.6 | 1,284.5
Payments due to vendors (earnout agreements) | 167.6 | 148.2 | 193.7
Liabilities in respect of put option agreements with vendors | 41.4 | 36.8 | 50.0
Fair value of derivatives | 4.0 | 2.6 | 2.2
Other creditors and accruals | 2,829.7 | 3,072.9 | 2,874.5
Total | £ 14,365.7 | £ 15,038.4 | £ 14,016.6

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- Definition The amount of current derivative financial liabilities. [Refer: Derivative financial liabilities] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_55&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of current payables that the entity does not separately disclose in the same statement or note. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_55&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of current trade payables and current other payables. [Refer: Current trade payables; Other current payables] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 54 -Subparagraph k -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_k&doctype=Standard -URIDate 2018-03-16 + Details
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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 2018-01-01 -Paragraph 78 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_78&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 70 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_70&doctype=Standard -URIDate 2018-03-16 + Details
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