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Number of Employees - Additional Information (Detail) - Employees	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of number of employees [line items]
Number of employees employed	23,757	26,543	28,318
Aegon N.V [member]
Disclosure of number of employees [line items]
Number of employees employed	0	0

X

- Definition

Disclosure of number of employees.

+ References

No definition available.

+ Details

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X

- Definition

The number of personnel employed by the entity at a date.

+ 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

+ Details

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- Details

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Namespace Prefix:
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