v3.25.4
Employee Benefit Plans and Postretirement Benefits - Summary of Fair Value of Plan Assets by Asset Category and Level Within Fair Value Hierarchy (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category $ 1,141 $ 1,077  
Total of Level 1, Level 2 and Level 3 Assets      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 1,095 1,028  
Total of Level 1, Level 2 and Level 3 Assets | Total Fixed income securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 67 66  
Total of Level 1, Level 2 and Level 3 Assets | U.S. government bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 18 18  
Total of Level 1, Level 2 and Level 3 Assets | U.S. corporate bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 9 8  
Total of Level 1, Level 2 and Level 3 Assets | Non-U.S. government bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 20 24  
Total of Level 1, Level 2 and Level 3 Assets | Non-U.S. corporate bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 10 11  
Total of Level 1, Level 2 and Level 3 Assets | Mortgage-backed securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 2 2  
Total of Level 1, Level 2 and Level 3 Assets | Other fixed income      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 8 3  
Total of Level 1, Level 2 and Level 3 Assets | Total Other types of investments      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 1,010 926  
Total of Level 1, Level 2 and Level 3 Assets | Mutual funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 939 860  
Total of Level 1, Level 2 and Level 3 Assets | Insurance contracts      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 71 66  
Total of Level 1, Level 2 and Level 3 Assets | Derivatives—credit contracts      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Total of Level 1, Level 2 and Level 3 Assets | Real estate      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Total of Level 1, Level 2 and Level 3 Assets | Cash      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 18 36  
Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 42 40  
Level 1 | Total Fixed income securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 27 26  
Level 1 | U.S. government bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 18 18  
Level 1 | U.S. corporate bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 9 8  
Level 1 | Non-U.S. government bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 1 | Non-U.S. corporate bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 1 | Mortgage-backed securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 1 | Other fixed income      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 1 | Total Other types of investments      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 1 | Mutual funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 1 | Insurance contracts      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 1 | Derivatives—credit contracts      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 1 | Real estate      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 1 | Cash      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 15 14  
Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 982 922  
Level 2 | Total Fixed income securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 40 40  
Level 2 | U.S. government bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 2 | U.S. corporate bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 2 | Non-U.S. government bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 20 24  
Level 2 | Non-U.S. corporate bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 10 11  
Level 2 | Mortgage-backed securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 2 2  
Level 2 | Other fixed income      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 8 3  
Level 2 | Total Other types of investments      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 939 860  
Level 2 | Mutual funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 939 860  
Level 2 | Insurance contracts      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 2 | Derivatives—credit contracts      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 2 | Real estate      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 2 | Cash      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 3 22  
Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 71 66 $ 45
Level 3 | Total Fixed income securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 3 | U.S. government bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 3 | U.S. corporate bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 3 | Non-U.S. government bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 3 | Non-U.S. corporate bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 3 | Mortgage-backed securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 3 | Other fixed income      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 3 | Total Other types of investments      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 71 66  
Level 3 | Mutual funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 3 | Insurance contracts      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 71 66  
Level 3 | Derivatives—credit contracts      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 3 | Real estate      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Level 3 | Cash      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category 0 0  
Investments at net asset value:      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets by asset category $ 46 $ 49