v3.25.4
Employee Benefit Plans - Fair Value of Plan Assets (Details) - U.S. - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Pension and Other Postretirement Plans      
Fair value of plan assets $ 2,361 $ 2,186 $ 2,422
Cash and cash equivalents      
Pension and Other Postretirement Plans      
Fair value of plan assets 7 7  
U.S. government and agency securities      
Pension and Other Postretirement Plans      
Fair value of plan assets 1,998 1,851  
Derivative contracts      
Pension and Other Postretirement Plans      
Fair value of plan assets   1  
Other investments      
Pension and Other Postretirement Plans      
Fair value of plan assets 80 70  
Other receivables      
Pension and Other Postretirement Plans      
Fair value of plan assets 3 10  
Commingled Trust Funds: Money Market      
Pension and Other Postretirement Plans      
Fair value of plan assets 30 27  
Foreign Funds: Fixed Income      
Pension and Other Postretirement Plans      
Fair value of plan assets 29 25  
Foreign Funds: Liquidity      
Pension and Other Postretirement Plans      
Fair value of plan assets 16 13  
Foreign Funds: Targeted Cash Flow      
Pension and Other Postretirement Plans      
Fair value of plan assets 203 184  
Defined Benefit Plan, Other (Liabilities)      
Pension and Other Postretirement Plans      
Fair value of plan assets (5) (2)  
Total | Defined Benefit Plan, Assets Before NAV Measurement And Liabilities      
Pension and Other Postretirement Plans      
Fair value of plan assets 2,088 1,939  
Level 1 | Defined Benefit Plan, Assets Before NAV Measurement And Liabilities      
Pension and Other Postretirement Plans      
Fair value of plan assets 1,853 1,645  
Level 1 | Cash and cash equivalents      
Pension and Other Postretirement Plans      
Fair value of plan assets 7 7  
Level 1 | U.S. government and agency securities      
Pension and Other Postretirement Plans      
Fair value of plan assets 1,846 1,638  
Level 1 | Derivative contracts      
Pension and Other Postretirement Plans      
Fair value of plan assets   0  
Level 1 | Other investments      
Pension and Other Postretirement Plans      
Fair value of plan assets 0 0  
Level 1 | Other receivables      
Pension and Other Postretirement Plans      
Fair value of plan assets 0 0  
Level 1 | Defined Benefit Plan, Other (Liabilities)      
Pension and Other Postretirement Plans      
Fair value of plan assets 0 0  
Level 2 | Defined Benefit Plan, Assets Before NAV Measurement And Liabilities      
Pension and Other Postretirement Plans      
Fair value of plan assets 155 224  
Level 2 | Cash and cash equivalents      
Pension and Other Postretirement Plans      
Fair value of plan assets 0 0  
Level 2 | U.S. government and agency securities      
Pension and Other Postretirement Plans      
Fair value of plan assets 152 213  
Level 2 | Derivative contracts      
Pension and Other Postretirement Plans      
Fair value of plan assets   1  
Level 2 | Other investments      
Pension and Other Postretirement Plans      
Fair value of plan assets 0 0  
Level 2 | Other receivables      
Pension and Other Postretirement Plans      
Fair value of plan assets 3 10  
Level 2 | Defined Benefit Plan, Other (Liabilities)      
Pension and Other Postretirement Plans      
Fair value of plan assets (5) (2)  
Level 3      
Pension and Other Postretirement Plans      
Fair value of plan assets 80 70 $ 71
Level 3 | Defined Benefit Plan, Assets Before NAV Measurement And Liabilities      
Pension and Other Postretirement Plans      
Fair value of plan assets 80 70  
Level 3 | Cash and cash equivalents      
Pension and Other Postretirement Plans      
Fair value of plan assets 0 0  
Level 3 | U.S. government and agency securities      
Pension and Other Postretirement Plans      
Fair value of plan assets 0 0  
Level 3 | Derivative contracts      
Pension and Other Postretirement Plans      
Fair value of plan assets   0  
Level 3 | Other investments      
Pension and Other Postretirement Plans      
Fair value of plan assets 80 70  
Level 3 | Other receivables      
Pension and Other Postretirement Plans      
Fair value of plan assets 0 0  
Level 3 | Defined Benefit Plan, Other (Liabilities)      
Pension and Other Postretirement Plans      
Fair value of plan assets 0 0  
Assets Measured at NAV      
Pension and Other Postretirement Plans      
Fair value of plan assets $ 278 $ 249