XML 196 R346.htm IDEA: XBRL DOCUMENT
v3.20.1

Fair Value - Information about Significant Unobservable Inputs (Parenthetical) (Detail) - EUR (€) € in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Derivatives [member] | Level III [member] |  |
Disclosure of significant unobservable inputs used in fair value measurement of assets and liabilities [line items] |  |
Investments for account of policyholders | € 1 | € 2

X
- Definition Disclosure of significant unobservable inputs used in fair value measurement of assets and liabilities [line items] + References No definition available. + Details
Name: | aeg_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsAndLiabilitiesLineItems
Namespace Prefix: | aeg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Investment for account of policyholders. + References No definition available. + Details
Name: | aeg_InvestmentForAccountOfPolicyholders
Namespace Prefix: | aeg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=ifrs-full_DerivativesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_LevelsOfFairValueHierarchyAxis=ifrs-full_Level3OfFairValueHierarchyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |