XML 254 R371.htm IDEA: XBRL DOCUMENT
v3.20.1

Share Capital - Detailed Information of Issued and Outstanding Capital (Detail) - Aegon N.V [member] - EUR (€) € / shares in Units, € in Millions, shares in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Disclosure of classes of share capital [Line Items] |  |
Common shares | € 323 | € 322
Common Share [member] |  |
Disclosure of classes of share capital [Line Items] |  |
Common shares | 253 | 251
Authorized share capital | € 720 | € 720
Number of authorized shares (in million) | 6,000 | 6,000
Par value in cents per share | € 12 | € 12
Common Share B [member] |  |
Disclosure of classes of share capital [Line Items] |  |
Common shares | € 70 | € 70
Authorized share capital | € 360 | € 360
Number of authorized shares (in million) | 3,000 | 3,000
Par value in cents per share | € 12 | € 12

X
- Definition Amount of shares authorised. + References No definition available. + Details
Name: | aeg_AmountOfSharesAuthorised
Namespace Prefix: | aeg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of shares issued and outstanding. + References No definition available. + Details
Name: | aeg_AmountOfSharesIssuedAndOutstanding
Namespace Prefix: | aeg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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_DisclosureOfClassesOfShareCapitalLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of shares authorised. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 79 -Subparagraph a -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_79_a_i&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_NumberOfSharesAuthorised
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The nominal value per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 79 -Subparagraph a -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_79_a_iii&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_ParValuePerShare
Namespace Prefix: | ifrs-full_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=ifrs-full_ParentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=aeg_CommonShareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=aeg_CommonShareBMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |