XML 170 R140.htm IDEA: XBRL DOCUMENT v3.22.0.1
Right of Use Assets - Reconciliation of changes of the right of use assets (Details) - CAD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Right-Of-Use Assets [Roll Forward]      
Right-of-use assets, beginning balance   $ 141 $ 146
Additions to right-of-use assets   1 16
Depreciation, right-of-use assets   (11) (21)
Acquisitions (Note 4)   13  
Disposal of assets (Note 4)   (41)  
Transfers   (8)  
Right-of-use assets, ending balance   95 141
Land      
Right-Of-Use Assets [Roll Forward]      
Right-of-use assets, beginning balance   58 58
Additions to right-of-use assets   0 3
Depreciation, right-of-use assets   (3) (3)
Acquisitions (Note 4)   13  
Disposal of assets (Note 4)   0  
Transfers   0  
Right-of-use assets, ending balance   68 58
Buildings      
Right-Of-Use Assets [Roll Forward]      
Right-of-use assets, beginning balance   24 16
Additions to right-of-use assets   1 13
Depreciation, right-of-use assets   (5) (5)
Acquisitions (Note 4)   0  
Disposal of assets (Note 4)   0  
Transfers   0  
Right-of-use assets, ending balance   20 24
Vehicles      
Right-Of-Use Assets [Roll Forward]      
Right-of-use assets, beginning balance   1 2
Additions to right-of-use assets   0 0
Depreciation, right-of-use assets   0 (1)
Acquisitions (Note 4)   0  
Disposal of assets (Note 4)   0  
Transfers   0  
Right-of-use assets, ending balance   1 1
Equipment      
Right-Of-Use Assets [Roll Forward]      
Right-of-use assets, beginning balance   16 25
Additions to right-of-use assets   0 0
Depreciation, right-of-use assets   (2) (9)
Acquisitions (Note 4)   0  
Disposal of assets (Note 4)   0  
Transfers   (8)  
Right-of-use assets, ending balance   6 16
Pipeline      
Right-Of-Use Assets [Roll Forward]      
Right-of-use assets, beginning balance   42 45
Additions to right-of-use assets   0 0
Depreciation, right-of-use assets   (1) (3)
Acquisitions (Note 4)   0  
Decrease through derecognition, financial assets $ 41    
Transfers   0  
Right-of-use assets, ending balance   $ 0 $ 42