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Policyholder Claims and Benefits - Additional Information (Detail) - EUR (€) € in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Disclosure Of Claims And Benefits Paid [abstract] |  |  |
Fair value changes on for account of policyholder financial assets | € 33,188 | € (11,326) | € 20,524
Increase of technical provisions for life insurance contracts | € 2,431 | € 1,403 | € 601

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- Definition Disclosure Of Claims And Benefits Paid [abstract] + References No definition available. + Details
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- Definition Gains losses on change for account of policyholder financial assets at fair value through profit or loss. + References No definition available. + Details
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Namespace Prefix: | aeg_
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- Definition Increase Decrease in Provisions + References No definition available. + Details
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Namespace Prefix: | aeg_
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Balance Type: | debit
Period Type: | duration