XML 194 R159.htm IDEA: XBRL DOCUMENT v3.22.0.1
Share Capital and Warrants - Schedule of Paid in Surplus Includes Stock Based Compensation Expense (Detail) - CAD ($)
$ in Millions
 2 Months Ended 12 Months Ended
Dec. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of reserves within equity [line items]        
Beginning Balance   $ 4,391 $ 4,377  
Stock-Based Compensation Expense   159 49 $ 67
Purchase of Common Shares Under NCIB   (120)    
Common Shares Issued on Exercise of Stock Options   (1)    
Ending Balance $ 4,284 4,284 4,391 4,377
NSRs and NCIB        
Disclosure of reserves within equity [line items]        
Stock-Based Compensation Expense   14 14  
Earnings Prior to Encana Split        
Disclosure of reserves within equity [line items]        
Beginning Balance   4,086 4,086  
Purchase of Common Shares Under NCIB   0    
Common Shares Issued on Exercise of Stock Options   0    
Ending Balance 4,086 4,086 4,086 4,086
Earnings Prior to Encana Split | NSRs and NCIB        
Disclosure of reserves within equity [line items]        
Stock-Based Compensation Expense   0 0  
Stock-Based Compensation        
Disclosure of reserves within equity [line items]        
Beginning Balance   305 291  
Purchase of Common Shares Under NCIB   0    
Common Shares Issued on Exercise of Stock Options   (1)    
Ending Balance 318 318 305 291
Stock-Based Compensation | NSRs and NCIB        
Disclosure of reserves within equity [line items]        
Stock-Based Compensation Expense   14 14  
Common shares        
Disclosure of reserves within equity [line items]        
Beginning Balance   0 0  
Purchase of Common Shares Under NCIB (120) (120)    
Common Shares Issued on Exercise of Stock Options   0    
Ending Balance $ (120) (120) 0 $ 0
Common shares | NSRs and NCIB        
Disclosure of reserves within equity [line items]        
Stock-Based Compensation Expense   $ 0 $ 0