The amount of amortisation of intangible assets other than goodwill. [Refer: Depreciation and amortisation expense; Intangible assets other than goodwill]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The amount of impairment loss recognised in profit or loss for intangible assets other than goodwill. [Refer: Impairment loss recognised in profit or loss; Intangible assets other than goodwill]

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Intangible Assets - Summary of Intangible Assets (Parenthetical) (Detail) - EUR (€) € in Millions	1 Months Ended	12 Months Ended
	Jul. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Consideration	€ 500
Impairment charge		€ 0	€ 20
DIY business in Belgium and Netherlands [member] \| Europe Distribution [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Impairment charge	€ 20
Customer-related intangible assets [member] \| Discontinued operations [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Amortisation charge for year		€ 2	€ 2	€ 14