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Receivables - Additional Information (Detail) - EUR (€) € in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018
Disclosure of receivables [Line Items] |  |
Income tax receivable | € 102 | € 102
Aegon N.V [member] |  |
Disclosure of receivables [Line Items] |  |
Income tax receivable | € 134 | € 88
Aegon N.V [member] | Top of range [member] |  |
Disclosure of receivables [Line Items] |  |
Receivables from group companies and other receivables, maturity | 1 year |

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- Definition Disclosure Of Receivables [line items] + References No definition available. + Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition Income tax receivables. + References No definition available. + Details
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Namespace Prefix: | aeg_
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Balance Type: | debit
Period Type: | instant

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- Definition Receivables maturity. + References No definition available. + Details
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Namespace Prefix: | aeg_
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Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |