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Events After the Reporting Period - Additional Information (Detail) € in Millions, $ in Millions	Feb. 03, 2020 EUR (€)	Feb. 03, 2020 USD ($)	Jan. 29, 2020 EUR (€)	Jan. 08, 2019 EUR (€)
Disclosure of non-adjusting events after reporting period [line items]
Business disposal gain (loss)				€ 70
JAPAN | Disposal of major subsidiary [member]
Disclosure of non-adjusting events after reporting period [line items]
Business sold, business combination			€ 153
Business disposal gain (loss)			€ 51
Sale of interest percentage			50.00%
Transamerica [member] | Disposal of major subsidiary [member]
Disclosure of non-adjusting events after reporting period [line items]
Business consideration	€ 635	$ 711
Aegon N.V [member] | JAPAN | Disposal of major subsidiary [member]
Disclosure of non-adjusting events after reporting period [line items]
Business sold, business combination			€ 153
Business disposal gain (loss)			€ 51
Sale of interest percentage			50.00%
Aegon N.V [member] | Transamerica [member] | Disposal of major building [member]
Disclosure of non-adjusting events after reporting period [line items]
Business consideration	€ 635	$ 711

X

- Definition

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+ References

No definition available.

+ Details

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- Definition

Gain (loss) on disposals of business.

+ References

No definition available.

+ Details

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- Definition

Percentage of sale of minority interest.

+ References

No definition available.

+ Details

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X

- Definition

The amount of consideration paid or received in respect of both obtaining and losing control of subsidiaries or other businesses. [Refer: Subsidiaries [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 7
-IssueDate 2019-01-01
-Paragraph 40
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_40_a&doctype=Standard
-URIDate 2019-03-27

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

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- Details

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- Details

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