v3.25.4
Revenues (Disaggregated Revenue) (Details) - CAD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disaggregation of Revenue [Line Items]      
Revenues $ 17,304 $ 17,046 $ 16,828
Remaining performance obligation 103 102  
Total freight revenues      
Disaggregation of Revenue [Line Items]      
Revenues 16,681 16,395 16,236
Petroleum and chemicals      
Disaggregation of Revenue [Line Items]      
Revenues 3,478 3,414 3,195
Metals and minerals      
Disaggregation of Revenue [Line Items]      
Revenues 1,962 2,048 2,048
Forest products      
Disaggregation of Revenue [Line Items]      
Revenues 1,839 1,931 1,943
Coal      
Disaggregation of Revenue [Line Items]      
Revenues 960 929 1,017
Grain and fertilizers      
Disaggregation of Revenue [Line Items]      
Revenues 3,658 3,422 3,265
Intermodal      
Disaggregation of Revenue [Line Items]      
Revenues 3,892 3,757 3,823
Automotive      
Disaggregation of Revenue [Line Items]      
Revenues 892 894 945
Other revenues      
Disaggregation of Revenue [Line Items]      
Revenues $ 623 $ 651 $ 592