v3.26.1
Pension and Other Postretirement Healthcare Benefits - Narrative (Details) - Pensions - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Multiemployer Plans [Abstract]        
Employer contributions     $ 5  
Expected future employer contributions, remainder of fiscal year $ 5   5  
Income Statement Location [Axis]: us-gaap:OtherCostOfOperatingRevenue | Foreign Plan        
Multiemployer Plans [Abstract]        
Multiemployer contribution amount $ 1 $ 1 $ 1 $ 2