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Borrowings - Summary of Detailed Composition of Operational Funding (Detail) - EUR (€) € in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Jan. 01, 2018 | [1]
Disclosure of detailed information about borrowings [Line Items] |  |  |  |
Borrowings | € 9,307 | € 12,061 | [1] | € 13,635
Operational funding [member] |  |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |  |
Borrowings | € 7,562 | 10,287 |  |
Operational funding [member] | Revolving Loan Facility Warehouse Mortgage Loans [member] |  |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |  |
Coupon rate | Floating |  |  |
Coupon date | Monthly |  |  |
Borrowing maturity | 2020-22 |  |  |
Borrowings | € 817 | 375 |  |
Operational funding [member] | SAECURE 14" RMBS Note [member] |  |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |  |
Coupon rate | Floating |  |  |
Coupon date | Quarterly |  |  |
Borrowing maturity | 2014/19 |  |  |
Borrowings |  | 874 |  |
Operational funding [member] | SAECURE 15" RMBS Note [member] |  |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |  |
Coupon rate | Floating |  |  |
Coupon date | Quarterly |  |  |
Borrowing maturity | 2014/20 |  |  |
Borrowings | € 917 | 1,038 |  |
Operational funding [member] | SAECURE 16" RMBS Note [member] |  |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |  |
Coupon rate | Floating |  |  |
Coupon date | Quarterly |  |  |
Borrowing maturity | 2018/23 |  |  |
Borrowings | € 512 | 875 |  |
Operational funding [member] | EUR 750 million Conditional Pass-Through Covered Bond [member] |  |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |  |
Coupon rate | 0.267% |  |  |
Coupon date | Annual |  |  |
Borrowing maturity | 2015/20 |  |  |
Borrowings | € 749 | 748 |  |
Operational funding [member] | EUR 500 million Conditional Pass-Through Covered Bond [member] |  |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |  |
Coupon rate | 0.25% |  |  |
Coupon date | Annual |  |  |
Borrowing maturity | 2016/23 |  |  |
Borrowings | € 498 | 497 |  |
Operational funding [member] | EUR 500 million Conditional Pass-Through Covered Bond [member] |  |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |  |
Coupon rate | 0.75% |  |  |
Coupon date | Annual |  |  |
Borrowing maturity | 2017/27 |  |  |
Borrowings | € 489 | 488 |  |
Operational funding [member] | EUR 500 million Conditional Pass-Through Covered Bond [member] |  |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |  |
Coupon rate | 0.375% |  |  |
Coupon date | Annual |  |  |
Borrowing maturity | 2017/24 |  |  |
Borrowings | € 498 | 497 |  |
Operational funding [member] | Variable Funding Surplus Note [member] |  |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |  |
Coupon rate | Floating |  |  |
Coupon date | Quarterly |  |  |
Borrowing maturity | 2006/36 |  |  |
Borrowings |  | 1,388 |  |
Operational funding [member] | FHLB Secured Borrowings [member] |  |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |  |
Coupon rate | Floating |  |  |
Coupon date | Quarterly |  |  |
Borrowing maturity | 2016/46 |  |  |
Borrowings | € 1,777 | 3,495 |  |
Operational funding [member] | Other [member] |  |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |  |
Borrowings | € 8 | € 12 |  |
Operational funding [member] | EUR 512 million "SAECURE 18" RMBS Note [Member] |  |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |  |
Coupon rate | Floating |  |  |
Coupon date | Quarterly |  |  |
Borrowing maturity | 2019/25 |  |  |
Borrowings | € 491 |  |  |
Operational funding [member] | Aegon Bank Senior Non-Preferred debt [Member] |  |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |  |
Coupon rate | Fixed |  |  |
Coupon date | Annual |  |  |
Borrowing maturity | 2019/24 |  |  |
Borrowings | € 497 |  |  |
[1] | Amounts have been restated to reflect voluntary changes in accounting policies related to liability adequacy testing that was adopted by Aegon effective January 1, 2019. Refer to note 2.1.2 Voluntary changes in accounting policies for details about this change.

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