v3.26.1
Related Party Transactions (Service Agreements - Narrative) (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]          
Other expenses $ 1,509 $ 1,340 $ 3,135 $ 2,653  
Total Revenues 9,570 9,349 20,418 19,416  
Other Liabilities 31,621   31,621   $ 31,164
Affiliated Entity [Member] | Services Necessary To Conduct The Company's Activities          
Related Party Transaction [Line Items]          
Other expenses 798 742 1,600 1,500  
Total Revenues 21 $ 17 40 $ 37  
Related Party          
Related Party Transaction [Line Items]          
Other Liabilities $ 42   $ 42   $ 72