v3.26.3
Derivative Financial Instruments (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2027
Dec. 31, 2025
Derivative [Line Items]            
Collateral posted $ 372   $ 372      
Collateral received           $ 34
Recognized net gains (losses) 86 $ 0 66 $ 2    
Mosaic Health            
Derivative [Line Items]            
Net put option fair value 1,330   1,330      
Liberty Dental            
Derivative [Line Items]            
Recognized net gains (losses) 169          
Net put option fair value 227   227     396
Liberty Dental | Forecast            
Derivative [Line Items]            
Estimated Payments to Acquire Majority Owner's Interest in a JV         $ 600  
Cash Flow Hedging            
Derivative [Line Items]            
Cash flow hedges included in accumulated other comprehensive loss, net of tax $ 184   $ 184     $ 192