XML 433 R238.htm IDEA: XBRL DOCUMENT v3.20.1
Derivatives - Summary of Derivative Asset and Liability (Detail) - EUR (€)
€ in Millions
Dec. 31, 2019
Dec. 31, 2018
Jan. 01, 2018
 [1]
Disclosure of derivative financial instruments [Line Items]      
Total derivative assets € 11,157 € 7,615 [1] € 5,912
Total derivative liabilities 11,616 7,230 [1] € 7,130
Derivatives for general account [member]      
Disclosure of derivative financial instruments [Line Items]      
Total derivative assets 10,658 7,337  
Total derivative liabilities 11,501 7,174  
Derivatives for general account [member] | Derivatives with negative values not designated as hedges [member]      
Disclosure of derivative financial instruments [Line Items]      
Total derivative assets 10,134 6,904  
Total derivative liabilities 11,060 6,879  
Derivatives for general account [member] | Non-cash changes [member]      
Disclosure of derivative financial instruments [Line Items]      
Total derivative assets 21 30  
Total derivative liabilities 26 29  
Derivatives for general account [member] | Cash flow hedges [member]      
Disclosure of derivative financial instruments [Line Items]      
Total derivative assets 390 289  
Total derivative liabilities 320 151  
Derivatives for general account [member] | Derivatives designated as Net foreign investment hedges [member]      
Disclosure of derivative financial instruments [Line Items]      
Total derivative assets 112 115  
Total derivative liabilities 96 114  
Derivatives for account of policyholders [member] | Derivatives with negative values not designated as hedges [member]      
Disclosure of derivative financial instruments [Line Items]      
Total derivative assets 499 278  
Total derivative liabilities € 114 € 56  
[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.