v3.26.1
Related Party Transactions - Related Party Transactions With Joint Ventures And Associates (Detail) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of transactions between related parties [line items]      
Assets € 317,233 € 327,390  
Liabilities 307,738 318,077  
Joint ventures [member]      
Disclosure of transactions between related parties [line items]      
Assets 0 0  
Liabilities [1] 0 0  
Revenue [2] 52 47 € 42
Expenses [3] 2 1 1
Associates [member]      
Disclosure of transactions between related parties [line items]      
Assets 20 8  
Liabilities [1] 77 110  
Revenue [2] 89 96 49
Expenses [3] € 68 € 73 € 33
[1] Liabilities decreased mainly due to closing of tax positions with a.s.r. in 2025. 2024 balance mainly contained reimbursement rights.
[2] Income is attributable to fees from services provided for asset management activities, as well as reimbursement for IT, operational, and administrative services provided to insurance joint ventures.
[3] Expenses are mainly reflecting transitional charges associated with the transaction between Aegon and a.s.r.