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Other Equity Instruments - Summary of Coupon Details - Summary of Perpetual Contingent Convertible (Parenthetical) (Detail) - EUR (€)	Dec. 31, 2019	Dec. 31, 2018
EUR 500 million [member] | Aegon N.V [member] | Perpetual contingent convertible securities [member]
Disclosure of other equity instruments [line items]
Principal amount	€ 500,000,000	€ 500,000,000

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- Definition

Line items of other equity instruments.

+ References

No definition available.

+ Details

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- Definition

The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2019-03-27

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- Details

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