v3.26.1
Related Party Disclosures (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Related Party Transaction [Line Items]          
Revenue from Contract with Customer, Excluding Assessed Tax $ 724 $ 604 $ 1,458 $ 1,215  
Equity Method Investee          
Related Party Transaction [Line Items]          
Revenue from Contract with Customer, Excluding Assessed Tax 11 $ 12 22 $ 24  
Equity Method Investee | Related Party          
Related Party Transaction [Line Items]          
Revenue from Contract with Customer, Excluding Assessed Tax 6   12    
Commitments to Extend Credit [Member]          
Related Party Transaction [Line Items]          
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability 11,800   11,800   $ 11,100
Commitments to Extend Credit [Member] | Related Party          
Related Party Transaction [Line Items]          
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability $ 67   $ 67   $ 94