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Other Assets and Receivables - Summary of Receivables (Detail) - EUR (€) € in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018
Disclosure Of Other Assets And Receivables [abstract] |  |
Loans to associates | € 16 | € 12
Loans to joint ventures |  | 18
Receivables from policyholders | 945 | 969
Receivables from brokers and agents | 288 | 396
Receivables from reinsurers | 777 | 1,129
Cash outstanding from assets sold | 320 | 116
Trade receivables | 1,484 | 1,321
Cash collateral | 1,383 | 616
Reverse repurchase agreements | 76 |
Income tax receivable | 102 | 102
Other | 1,300 | 1,382
Provision for doubtful debts | (34) | (41)
Receivables | 6,655 | 6,019
Current | 6,611 | 5,989
Non-current | € 43 | € 30

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- Definition Cash collateral. + References No definition available. + Details
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Namespace Prefix: | aeg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Cash outstanding from assets sold. + References No definition available. + Details
Name: | aeg_CashOutstandingFromAssetsSold
Namespace Prefix: | aeg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Disclosure Of Other Assets And Receivables [abstract]. + References No definition available. + Details
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- Definition Income tax receivables. + References No definition available. + Details
Name: | aeg_IncomeTaxReceivables
Namespace Prefix: | aeg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The amount of loans the entity has made to its associates. + References No definition available. + Details
Name: | aeg_LoansToAssociates
Namespace Prefix: | aeg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Loans to joint ventures. + References No definition available. + Details
Name: | aeg_LoansToJointVentures
Namespace Prefix: | aeg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Other receivable. + References No definition available. + Details
Name: | aeg_OtherReceivable
Namespace Prefix: | aeg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Provision for doubtful debts. + References No definition available. + Details
Name: | aeg_ProvisionForDoubtfulDebts
Namespace Prefix: | aeg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Receivables. + References No definition available. + Details
Name: | aeg_Receivables
Namespace Prefix: | aeg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Receivables from brokers and agents. + References No definition available. + Details
Name: | aeg_ReceivablesFromBrokersAndAgents
Namespace Prefix: | aeg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Receivables from policy holders. + References No definition available. + Details
Name: | aeg_ReceivablesFromPolicyHolders
Namespace Prefix: | aeg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Receivables from reinsurers. + References No definition available. + Details
Name: | aeg_ReceivablesFromReinsurers
Namespace Prefix: | aeg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Reverse repurchase agreements. + References No definition available. + Details
Name: | aeg_ReverseRepurchaseAgreements
Namespace Prefix: | aeg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The amount of current trade receivables. [Refer: Trade receivables] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_78_b&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 68 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_68&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of non-current trade receivables. [Refer: Trade receivables] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_78_b&doctype=Standard -URIDate 2019-03-27 + Details
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Balance Type: | debit
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- Definition The amount due from customers for goods and services sold. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_78_b&doctype=Standard -URIDate 2019-03-27 + Details
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