XML 90 R74.htm IDEA: XBRL DOCUMENT v3.23.1
Assets Classified as Held for Sale - Impairment loss for an initial write-down of the assets held for sale (Details) - CAD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Assets Classified as Held for Sale      
Property, plant and equipment $ 28,871 $ 49,065 $ 51,883
Interest in resource properties 201,802 254,706  
Asset held for sale 475,477 509,966  
Impairment of assets held for sale (31,443)    
Carrying amount before impairment      
Assets Classified as Held for Sale      
Property, plant and equipment 49,140 72,446 72,140
Interest in resource properties 218,203 $ 264,795 $ 263,957
Assets and liabilities classified as held for sale      
Assets Classified as Held for Sale      
Property, plant and equipment 1,358    
Interest in resource properties 33,385    
Asset held for sale 34,743    
Decommissioning obligations. (16,633)    
Assets held for sale, net 49,552    
Sale proceeds, adjusted 18,109    
Impairment of assets held for sale (31,443)    
Assets and liabilities classified as held for sale | Carrying amount before impairment      
Assets Classified as Held for Sale      
Property, plant and equipment 19,137    
Interest in resource properties 47,048    
Asset held for sale $ 66,185