v3.25.4
Income Taxes - Schedule of Income Tax Expense Components (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Current tax expense:      
Federal $ 1,460 $ 1,649 $ 1,417
State 321 359 314
Foreign 6 11 6
Total current tax expense 1,787 2,019 1,737
Deferred and other tax expense/(benefit):      
Federal 351 47 219
State (114) (24) (104)
Foreign 4 5 2
Total deferred and other tax expense 241 28 117
Total income tax expense 2,028 2,047 1,854
Kansas      
Deferred and other tax expense/(benefit):      
Deferred tax expense adjustment $ 115    
Louisiana and Arkansas      
Deferred and other tax expense/(benefit):      
Deferred tax expense adjustment   $ 34  
Nebraska, Iowa, Kansas, and Arkansas      
Deferred and other tax expense/(benefit):      
Deferred tax expense adjustment     $ 114