v3.26.1
Related Party Disclosures (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Related Party Transaction [Line Items]      
Revenue from Contract with Customer, Excluding Assessed Tax $ 734 $ 611  
Equity Method Investee      
Related Party Transaction [Line Items]      
Revenue from Contract with Customer, Excluding Assessed Tax 11 $ 12  
Equity Method Investee | Related Party      
Related Party Transaction [Line Items]      
Revenue from Contract with Customer, Excluding Assessed Tax 6    
Commitments to Extend Credit [Member]      
Related Party Transaction [Line Items]      
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability 11,200   $ 11,100
Commitments to Extend Credit [Member] | Related Party      
Related Party Transaction [Line Items]      
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability $ 94   $ 94