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Supplemental Information (Supplementary Cash Flow Information) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Supplemental Cash Flow Elements [Abstract]      
Interest Paid $ 383 $ 426 $ 308
Income Taxes (Recovered), net of Amounts Paid (see Note 6) $ 62 $ 295 $ (19)