v3.26.1
Stockholders' Equity Tax Benefit (Expense) on Net Activity (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Other Comprehensive Income (Loss) [Line Items]        
Other Comprehensive Income (Loss), Tax Benefit (Expense) $ 4 $ 16 $ (2) $ 6
Pension Plan        
Other Comprehensive Income (Loss) [Line Items]        
Other Comprehensive Income (Loss), Tax Benefit (Expense) 0 0 (1) 1
Other Benefit Plans        
Other Comprehensive Income (Loss) [Line Items]        
Other Comprehensive Income (Loss), Tax Benefit (Expense) 1 0 2 2
Derivative Instruments        
Other Comprehensive Income (Loss) [Line Items]        
Other Comprehensive Income (Loss), Tax Benefit (Expense) 3 16 (3) 3
Unrealized Gain (loss) on Investments        
Other Comprehensive Income (Loss) [Line Items]        
Other Comprehensive Income (Loss), Tax Benefit (Expense) $ 0 $ 0 $ 0 $ 0