v3.25.4
Schedule II - Valuation and Qualifying Accounts (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Allowance for doubtful accounts      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period $ 95 $ 91 $ 80
Additions 249 252 245
Deductions (253) (248) (234)
Other 0 0 0
Balance at End of Period 91 95 91
Deferred tax asset valuation allowance      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period 6,267 13,945 13,971
Additions 66 241 81
Deductions (5,021) (7,919) (107)
Other 0 0 0
Balance at End of Period 1,312 6,267 13,945
Insurance reserves      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period 9,796 6,986 4,754
Additions 4,879 4,489 3,544
Deductions (2,421) (1,696) (1,526)
Other 209 17 214
Balance at End of Period 12,463 9,796 6,986
Increase (decrease) for changes in estimates (21) (78) $ 158
Reserve amount covered $ 473 $ 264