v3.26.1
Equity Method Investment - Schedule of Equity Method Investment Financial Position and Results of Operations (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Mar. 31, 2026
Dec. 31, 2025
Mar. 31, 2025
Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]                
Assets $ 129,055   $ 129,055     $ 57,706    
Liabilities 114,227   114,227     50,662    
Equity interests 14,828 $ 6,637 14,828 $ 6,637 $ 14,594 7,044 $ 6,543 $ 6,432
Total liabilities and equity 129,055   129,055     57,706    
Net income 328 159 478 299        
Bankers Healthcare Group, LLC                
Schedule of Equity Method Investments [Line Items]                
Assets 4,738   4,738     4,264    
Liabilities 4,333   4,333     3,824    
Equity interests 405   405     440    
Total liabilities and equity 4,738   4,738     $ 4,264    
Revenues 302 270 604 511        
Net income $ 47 $ 51 $ 116 $ 95