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Other Equity Instruments - Summary of Coupon (Detail) - USD 500 million [member] - Perpetual contingent convertible securities [member]	12 Months Ended
	Dec. 31, 2019
Disclosure of other equity instruments [line items]
Coupon date	Semi-annually, April 15
Aegon N. V. and subsidiaries [member]
Disclosure of other equity instruments [line items]
Coupon date	Semi-annually, April 15

X

- Definition

Coupon as of date.

+ References

No definition available.

+ Details

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X

- Definition

Line items of other equity instruments.

+ References

No definition available.

+ Details

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Namespace Prefix:	aeg_
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- Details

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X

- Details

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Period Type:

X

- Details

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