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Investments - Additional Information (Detail) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Disclosure of investments in financial assets and real estate [line items] |  |  |
Current financial assets | € 14,654 | € 13,287 |
Percentage of properties appraised | 100.00% | 99.00% |
Percentage of properties appraised performed by independent external appraisers | 99.00% | 98.00% |
Investments in real estate | € 2,901 | € 2,700 | € 2,147
Rental income | 83 | 82 | 71
Direct operating expense from investment property generating rental income | 59 | 63 | 71
Direct operating expense from investment property not generating rental income | 2 | 2 | € 1
Aegon Americas [member] |  |  |
Disclosure of investments in financial assets and real estate [line items] |  |  |
Investments in real estate | € 653 | 530 |
Remaining lease terms of non-cancellable leases | up to 20 years |  |
Aegon Netherlands [member] |  |  |
Disclosure of investments in financial assets and real estate [line items] |  |  |
Investments in real estate | € 2,229 | € 2,150 |

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- Definition The amount of direct operating expenses (including repairs and maintenance) arising from investment property that generated rental income during the period recognised in profit or loss. [Refer: Investment property] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2019-01-01 -Paragraph 75 -Subparagraph f -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=40&code=ifrs-tx-2019-en-r&anchor=para_75_f_ii&doctype=Standard -URIDate 2019-03-27 + Details
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