v3.26.1
Total Net Investment Result - Summary Of Results From Financial Transactions (Detail) - EUR (€)
€ in Millions
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
[1]
Non-insurance [member]    
Results From Financial Transactions [Line Items]    
Fair value gains and losses derivatives € (3) € 1
Fair value changes of financial assets at FVPL 2,259 1,980
Other (4) 6
Results from financial transactions 2,252 1,987
Insurance contracts issued [member]    
Results From Financial Transactions [Line Items]    
Fair value gains and losses derivatives 154 79
Fair value changes of financial assets at FVPL 5,121 3,760
Other 43 (24)
Results from financial transactions € 5,318 € 3,814
[1] 1H 2025 figures are restated as Aegon UK is classified as discontinued operations.