Condensed Financial Information of Registrant - Additional Information (Detail) - Aegon N.V [member] - Business combinations [member] - EUR (€) € in Billions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Condensed financial information of registrant [line items]
Dividends	€ 1.0	€ 0.8	€ 1.2
Capital contributions	€ 0.1	€ 0.2	€ 0.4

The amount of dividends received.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2021-01-01
-Paragraph B12
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2021-en-r&anchor=para_B12_a&doctype=Appendix&subtype=B
-URIDate 2021-03-24

Name:	ifrs-full_DividendsReceived
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration