v3.26.3
Equity Method Investment - Schedule of Equity Method Investment Financial Position and Results of Operations (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Jun. 30, 2026
Dec. 31, 2025
Jun. 30, 2025
Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]                
Assets $ 130,685   $ 130,685     $ 57,706    
Liabilities 116,075   116,075     50,662    
Equity interests 14,610 $ 6,856 14,610 $ 6,856 $ 14,828 7,044 $ 6,637 $ 6,432
Total liabilities and equity 130,685   130,685     57,706    
Net income 379 173 857 473        
Bankers Healthcare Group, LLC                
Schedule of Equity Method Investments [Line Items]                
Assets 5,182   5,182     4,264    
Liabilities 4,699   4,699     3,824    
Equity interests 483   483     440    
Total liabilities and equity 5,182   5,182     $ 4,264    
Revenues 382 371 986 882        
Net income $ 106 $ 94 $ 222 $ 189