XML 463 R163.htm IDEA: XBRL DOCUMENT v3.20.1

Financial Risks - Summary of Shares Cost Prior to Impairment (Detail) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Impairment Losses On Shares [abstract]
Shares	€ (2)	€ (5)

X

- Definition

Disclosure Of Impairment Losses On Shares [abstract].

+ References

No definition available.

+ Details

Name:	aeg_DisclosureOfImpairmentLossesOnSharesAbstract
Namespace Prefix:	aeg_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Treasury stock value eliminated.

+ References

No definition available.

+ Details

Name:	aeg_TreasuryStockValueEliminated
Namespace Prefix:	aeg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration