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Summary of Operating Segments (Detail) - CAD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Disclosure of operating segments [Line Items]    
Revenue $ 1,937,854 $ 1,617,194
Earnings before income taxes, gain on repurchase of unsecured senior notes, gain on acquisition, loss (gain) on investments and other assets, finance charges, foreign exchange, loss on asset decommissioning, gain on asset disposals and depreciation and amortization 265,779 (14,143)
Depreciation and amortization 297,557 279,035
Gain on asset disposals 24,469 29,926
Loss on asset decommissioning 9,592 0
Total assets 3,019,035 2,876,123
All Other Segments [Member]    
Disclosure of operating segments [Line Items]    
Revenue 1,937,854 1,617,194
Earnings before income taxes, gain on repurchase of unsecured senior notes, gain on acquisition, loss (gain) on investments and other assets, finance charges, foreign exchange, loss on asset decommissioning, gain on asset disposals and depreciation and amortization 611,118 311,605
Depreciation and amortization 297,557 279,035
Gain on asset disposals 24,469 29,926
Loss on asset decommissioning 9,592  
Total assets 3,019,035 2,876,123
Capital expenditures 226,749 184,250
Contract Drilling Services [Member]    
Disclosure of operating segments [Line Items]    
Revenue 1,704,265 1,436,134
Earnings before income taxes, gain on repurchase of unsecured senior notes, gain on acquisition, loss (gain) on investments and other assets, finance charges, foreign exchange, loss on asset decommissioning, gain on asset disposals and depreciation and amortization 630,761 397,753
Depreciation and amortization 269,133 255,286
Gain on asset disposals 23,378 25,495
Loss on asset decommissioning 9,592  
Total assets 2,565,495 2,574,867
Capital expenditures 213,660 177,844
Completion and Production Services [Member]    
Disclosure of operating segments [Line Items]    
Revenue 240,716 187,171
Earnings before income taxes, gain on repurchase of unsecured senior notes, gain on acquisition, loss (gain) on investments and other assets, finance charges, foreign exchange, loss on asset decommissioning, gain on asset disposals and depreciation and amortization 51,224 38,147
Depreciation and amortization 14,654 14,381
Gain on asset disposals 973 3,233
Total assets 271,724 179,226
Capital expenditures 9,984 5,325
Corporate and Other [Member]    
Disclosure of operating segments [Line Items]    
Earnings before income taxes, gain on repurchase of unsecured senior notes, gain on acquisition, loss (gain) on investments and other assets, finance charges, foreign exchange, loss on asset decommissioning, gain on asset disposals and depreciation and amortization (70,867) (124,295)
Depreciation and amortization 13,770 9,368
Gain on asset disposals 118 1,198
Total assets 181,816 122,030
Capital expenditures 3,105 1,081
Inter-Segment Eliminations [Member]    
Disclosure of operating segments [Line Items]    
Revenue $ (7,127) $ (6,111)