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Trade and other payables - Summary of Trade and Other Payables, Amounts Falling Due After More Than One Year (Detail) - GBP (£) £ in Millions	Dec. 31, 2019	Dec. 31, 2018
Trade and other non-current payables [abstract]
Payments due to vendors (earnout agreements)	£ 111.4	£ 266.5
Liabilities in respect of put option agreements with vendors	151.4	205.2
Fair value of derivatives	21.2	14.2
Other creditors and accruals	199.3	355.5
Trade and other payables	£ 483.3	£ 841.4

X

- Definition

The amount of non-current derivative financial liabilities. [Refer: Derivative financial liabilities]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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X

- Definition

The amount of non-current trade payables and non-current other payables. [Refer: Other non-current payables; Non-current trade payables]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References

No definition available.

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- Definition

The amount of non-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
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X

- Definition

Contingent consideration non-current payable to vendors (earnout agreements).

+ References

No definition available.

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X

- Definition

Liabilities of put option agreements with vendors, non-current.

+ References

No definition available.

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