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Contingencies - Additional Information (Detail) £ in Millions	Dec. 31, 2017 GBP (£)
Contingent rents recognised as income [abstract]
Benefit from FCPE	£ 90

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- References

No definition available.

+ Details

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- Definition

Benefit from financial partial exemption.

+ References

No definition available.

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Namespace Prefix:	pso_
Data Type:	xbrli:monetaryItemType
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