XML 100 R87.htm IDEA: XBRL DOCUMENT v3.25.4
Derivative Financial Instruments (Details 2) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items]      
Realized net losses $ 8 $ 47 $ 39
Net derivative losses $ (6) $ (5) $ (100)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Cost of sales Cost of sales Cost of sales
Derivatives not designated as cash flow hedges | Natural gas derivatives | Cost of Sales      
Derivative Instruments, Gain (Loss) [Line Items]      
Unrealized net (losses) gains $ (5) $ 35 $ 39
Realized net losses $ (1) $ (40) $ (139)