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Right-of-Use Assets and Leases - ROU assets within Property, Plant and Equipment (Details) - CAD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Right-of-Use Assets and Leases    
Property, plant and equipment, net - excluding ROU assets $ 64,334 $ 63,982
Right-of-use assets 4,178 3,668
Property, plant and equipment, net - including ROU assets $ 68,512 $ 67,650