v3.26.1
Schedule IV - Summary of Reinsurance (Detail) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of Reinsurance Transactions [line items]      
Ceded to other companies € 17,153 € 16,021  
Net insurance revenue & insurance service expenses (326) 51 € 160
Net income / (expenses) on reinsurance held 836 325 182
Life insurance in force [member]      
Disclosure of Reinsurance Transactions [line items]      
Gross amount 793,260 874,615 813,550
Ceded to other companies (282,774) (351,356) (366,577)
Assumed from other companies 196,862 258,407 273,421
Net amount € 707,347 € 781,666 € 720,394
% of amount assumed to net 28.00% 33.00% 38.00%
Life [member]      
Disclosure of Reinsurance Transactions [line items]      
Net insurance revenue & insurance service expenses € (418) € (440) € (121)
Net income / (expenses) on reinsurance held 816 368 221
Non life [member]      
Disclosure of Reinsurance Transactions [line items]      
Net insurance revenue & insurance service expenses 93 491 281
Net income / (expenses) on reinsurance held € 21 € (43) € (39)