XML 366 R254.htm IDEA: XBRL DOCUMENT v3.20.1
Deferred Expenses - Summary of Amounts Arising From Insurance Contracts (Detail) - EUR (€)
€ in Millions
Dec. 31, 2019
Dec. 31, 2018
Jan. 01, 2018
 [1]
Disclosure of amounts arising from insurance contracts [abstract]      
DPAC for insurance contracts and investment contracts with discretionary participation features € 9,972 € 10,457  
Deferred cost of reinsurance 389 23  
Deferred transaction costs for investment management services 442 431  
Deferred expenses 10,804 10,910 [1] € 10,135
Current 882 957  
Non-current € 9,921 € 9,953  
[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.