v3.26.1
Segmented Information (Goodwill, Property, Plant and Equipment and Total Assets by Segment) (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Segment Reporting [Line Items]    
Goodwill $ 2,324 $ 2,576
Property, Plant and Equipment 13,203 14,244
Total Assets 19,280 20,390
Operating Segments [Member] | USA Operations [Member]    
Segment Reporting [Line Items]    
Goodwill 1,436 1,938
Property, Plant and Equipment 7,960 11,613
Total Assets 10,220 14,393
Operating Segments [Member] | Canadian Operations [Member]    
Segment Reporting [Line Items]    
Goodwill 888 638
Property, Plant and Equipment 5,143 2,522
Total Assets 6,972 3,921
Corporate & Other [Member]    
Segment Reporting [Line Items]    
Goodwill 0 0
Property, Plant and Equipment 100 109
Total Assets $ 2,088 $ 2,076