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Profit Sharing and Rebates - Summary of Profit Sharing and Rebates (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure Of Profit Sharing And Rebates [abstract]
Surplus interest bonuses	€ 2	€ 2	€ 2
Profit appropriated to policyholders	15	21	21
Total	€ (17)	€ (23)	€ (23)

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- Definition

Disclosure Of Profit Sharing And Rebates [abstract]

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Profit appropriation to policyholders.

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Profit sharing and rebates.

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Surplus interest bonuses.

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