XML 231 R126.htm IDEA: XBRL DOCUMENT
v3.20.1

Significant Accounting Policies - Summary of Reconciliation Between IFRS and IFRS-EU (Detail) - EUR (€) € in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Jan. 01, 2018 | [2] | Dec. 31, 2016
Disclosure of changes in accounting estimates [line items] |  |  |  |  |  |  |
Equity | € 24,441 | € 22,542 | [1] | € 24,079 | [2] | € 24,079 | € 24,341
Shareholders' equity, adjustment of EU 'IAS 39' carve-out | 774 | 399 |  | 368 |  |  |
Shareholders' equity, tax effect of the adjustment | (167) | (81) |  | (83) |  |  |
Shareholders' equity, effect of the adjustment after tax | 607 | 318 |  | 285 |  |  |
Net income, adjustment of EU 'IAS 39' carve-out | 375 | 31 |  | (142) |  |  |
Net income, tax effect of the adjustment | (86) | 3 |  | 34 |  |  |
Net income, effect of the adjustment after tax | 289 | 34 |  | (108) |  |  |
In accordance with IFRS [member] |  |  |  |  |  |  |
Disclosure of changes in accounting estimates [line items] |  |  |  |  |  |  |
Equity | 21,850 | 19,200 |  | 20,266 |  |  |
Net income | 1,239 | 711 |  | 2,469 |  |  |
In accordance with IFR5-EU [member] |  |  |  |  |  |  |
Disclosure of changes in accounting estimates [line items] |  |  |  |  |  |  |
Equity | 22,457 | 19,518 |  | 20,550 |  |  |
Net income | € 1,528 | € 744 |  | € 2,361 |  |  |
[1] | See note 2.1.1 for details about the impact of adopting IFRS 16 on Leases and note 2.1.2 for details about the impact of voluntary change in accounting policy on Liability Adequacy Testing
[2] | Amounts have been restated to reflect voluntary changes in accounting policies related to liability adequacy testing that was adopted by Aegon effective January 1, 2019. Refer to note 2.1.2 Voluntary changes in accounting policies for details about this change.

X
- Definition Equity adjustment of EU 'IAS 39' carve-out. + References No definition available. + Details
Name: | aeg_EquityAdjustmentOfEUIAS39Carveout
Namespace Prefix: | aeg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Equity adjustment of EU 'IAS 39' carve-out after tax. + References No definition available. + Details
Name: | aeg_EquityAdjustmentOfEUIAS39CarveoutAfterTax
Namespace Prefix: | aeg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Net income. + References No definition available. + Details
Name: | aeg_NetIncome
Namespace Prefix: | aeg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Net income adjustment of EU 'IAS 39' carve-out. + References No definition available. + Details
Name: | aeg_NetIncomeAdjustmentOfEUIAS39Carveout
Namespace Prefix: | aeg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Net income adjustment of EU 'IAS 39' carve-out after tax. + References No definition available. + Details
Name: | aeg_NetIncomeAdjustmentOfEUIAS39CarveoutAfterTax
Namespace Prefix: | aeg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Tax effect net income adjustment of EU 'IAS 39' carve-out. + References No definition available. + Details
Name: | aeg_TaxEffectNetIncomeAdjustmentOfEUIAS39Carveout
Namespace Prefix: | aeg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax effect of equity adjustment of EU 'IAS 39' carve-out. + References No definition available. + Details
Name: | aeg_TaxEffectOfEquityAdjustmentOfEUIAS39Carveout
Namespace Prefix: | aeg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfChangesInAccountingEstimatesLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of residual interest in the assets of the entity after deducting all its liabilities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 1 -IssueDate 2019-01-01 -Paragraph 24 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2019-en-r&anchor=para_24_a&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 1 -IssueDate 2019-01-01 -Paragraph 32 -Subparagraph a -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2019-en-r&anchor=para_32_a_i&doctype=Standard -URIDate 2019-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2019-01-01 -Paragraph 93 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2019-en-r&anchor=para_93_a&doctype=Standard -URIDate 2019-03-27 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2019-01-01 -Paragraph 93 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2019-en-r&anchor=para_93_b&doctype=Standard -URIDate 2019-03-27 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2019-01-01 -Paragraph 93 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2019-en-r&anchor=para_93_e&doctype=Standard -URIDate 2019-03-27 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_55&doctype=Standard -URIDate 2019-03-27 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 78 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_78_e&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_Equity
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | ifrs-full_AccountingEstimatesAxis=aeg_IFRSMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_AccountingEstimatesAxis=aeg_IFRSEUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |