v3.25.4
Pension and Postretirement Plans - Schedule of Pension Plan Asset Fair Values (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 235 $ 190 $ 13
Pension Benefits | United States      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 2,249 2,121 2,139
Pension Benefits | United States | Level 1, 2 and 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 770 765  
Pension Benefits | United States | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 655 656  
Pension Benefits | United States | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 115 109  
Pension Benefits | United States | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | United States | Equity securities | Level 1, 2 and 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 219 298  
Pension Benefits | United States | Equity securities | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 219 298  
Pension Benefits | United States | Equity securities | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | United States | Equity securities | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | United States | Government debt securities | Level 1, 2 and 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 360 330  
Pension Benefits | United States | Government debt securities | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 360 330  
Pension Benefits | United States | Government debt securities | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | United States | Government debt securities | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | United States | Corporate debt securities | Level 1, 2 and 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 115 109  
Pension Benefits | United States | Corporate debt securities | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | United States | Corporate debt securities | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 115 109  
Pension Benefits | United States | Corporate debt securities | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | United States | Cash and cash equivalents | Level 1, 2 and 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 76 28  
Pension Benefits | United States | Cash and cash equivalents | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 76 28  
Pension Benefits | United States | Cash and cash equivalents | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | United States | Cash and cash equivalents | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | United States | Insurance contracts | Level 1, 2 and 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | United States | Insurance contracts | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | United States | Insurance contracts | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | United States | Insurance contracts | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | United States | Common/collective trusts measured at NAV | NAV      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 1,215 1,079  
Pension Benefits | United States | Real estate and infrastructure investments measured at NAV | NAV      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 264 277  
Pension Benefits | Int’l.      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 806 751 $ 778
Pension Benefits | Int’l. | Level 1, 2 and 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 241 211  
Pension Benefits | Int’l. | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 6 21  
Pension Benefits | Int’l. | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | Int’l. | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 235 190  
Pension Benefits | Int’l. | Equity securities | Level 1, 2 and 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | Int’l. | Equity securities | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | Int’l. | Equity securities | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | Int’l. | Equity securities | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | Int’l. | Government debt securities | Level 1, 2 and 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | Int’l. | Government debt securities | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | Int’l. | Government debt securities | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | Int’l. | Government debt securities | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | Int’l. | Corporate debt securities | Level 1, 2 and 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | Int’l. | Corporate debt securities | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | Int’l. | Corporate debt securities | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | Int’l. | Corporate debt securities | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | Int’l. | Cash and cash equivalents | Level 1, 2 and 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 6 21  
Pension Benefits | Int’l. | Cash and cash equivalents | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 6 21  
Pension Benefits | Int’l. | Cash and cash equivalents | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | Int’l. | Cash and cash equivalents | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | Int’l. | Insurance contracts | Level 1, 2 and 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 235 190  
Pension Benefits | Int’l. | Insurance contracts | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | Int’l. | Insurance contracts | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Pension Benefits | Int’l. | Insurance contracts | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 235 190  
Pension Benefits | Int’l. | Common/collective trusts measured at NAV | NAV      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 462 419  
Pension Benefits | Int’l. | Real estate and infrastructure investments measured at NAV | NAV      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 103 $ 121