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Subordinated Borrowings - Additional Information (Detail) € in Millions, $ in Millions |  |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Oct. 22, 2019 USD ($) | Apr. 11, 2018 USD ($) | Dec. 31, 2019 EUR (€) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 EUR (€) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 EUR (€)
Subordinated borrowings - held at amortized cost [member] |  |  |  |  |  |  |
Disclosure of subordinated liabilities [Line Items] |  |  |  |  |  |  |
Fair value of loans | € |  |  |  |  | € 2,416 |  | € 1,355
Aegon N.V [member] | Subordinated borrowings - held at amortized cost [member] |  |  |  |  |  |  |
Disclosure of subordinated liabilities [Line Items] |  |  |  |  |  |  |
Fair value of loans | € |  |  | € 1,560 |  | € 1,355 |  |
USD 800 million non-cumulative subordinated notes [member] |  |  |  |  |  |  |
Disclosure of subordinated liabilities [Line Items] |  |  |  |  |  |  |
Subordinated notes issued |  | $ 800 |  | $ 800 |  |  |
Subordinated notes, coupon rate |  |  | 5.50% |  |  |  |
USD 800 million non-cumulative subordinated notes [member] | Aegon N.V [member] |  |  |  |  |  |  |
Disclosure of subordinated liabilities [Line Items] |  |  |  |  |  |  |
Subordinated notes issued |  | $ 800 |  | 800 |  | $ 800 |
Subordinated notes, first call date |  |  | April 11, 2028 |  |  |  |
Borrowing maturity |  |  | April 11, 2048 |  |  |  |
Subordinated notes, coupon rate |  | 5.50% | 5.50% |  |  |  |
Marginal basis points |  | 1.00% |  |  |  |  |
USD 925 million fixed subordinated notes [member] |  |  |  |  |  |  |
Disclosure of subordinated liabilities [Line Items] |  |  |  |  |  |  |
Subordinated notes issued | $ 925 |  |  | $ 925 |  | $ 925 |
Subordinated notes, coupon rate | 5.10% |  | 5.10% |  |  |  |

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- Definition Borrowings, coupon rate. + References No definition available. + Details
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- Definition Disclosure of subordinated liabilities. + References No definition available. + Details
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- Definition Initial call date of dated subordinated liabilities. + References No definition available. + Details
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- Definition Marginal basis points. + References No definition available. + Details
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- Definition Subordinated notes issued. + References No definition available. + Details
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- Definition The maturity of borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 7 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_7&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The fair value of financial liabilities. [Refer: At fair value [member]; Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 25 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_25&doctype=Standard -URIDate 2019-03-27 + Details
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- Details
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- Details
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