v3.26.1
Financial Risks - Disclsure Of Relationship Between Amounts Payable On Demand That Arise From Contracts With In Scope Of IFRS17 And Carrying Amount Of Related Groups Of Contracts (Details) - EUR (€)
€ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclsure Of Relationship Between Amounts Payable On Demand That Arise From Contracts With In Scope Of IFRS17 And Carrying Amount Of Related Groups Of Contracts [Line Items]    
Amount payable on demand € 160,018 € 170,348
Carrying amount 175,624 186,801
Insurance contracts - Direct participating contracts [member]    
Disclsure Of Relationship Between Amounts Payable On Demand That Arise From Contracts With In Scope Of IFRS17 And Carrying Amount Of Related Groups Of Contracts [Line Items]    
Amount payable on demand 122,098 129,566
Carrying amount 128,354 136,033
Insurance contracts - Without direct participation contracts [member]    
Disclsure Of Relationship Between Amounts Payable On Demand That Arise From Contracts With In Scope Of IFRS17 And Carrying Amount Of Related Groups Of Contracts [Line Items]    
Amount payable on demand 37,919 40,782
Carrying amount 47,269 € 50,767
Reinsurance contracts held [member]    
Disclsure Of Relationship Between Amounts Payable On Demand That Arise From Contracts With In Scope Of IFRS17 And Carrying Amount Of Related Groups Of Contracts [Line Items]    
Amount payable on demand 1  
Carrying amount € 2