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Impairments and Other Charges (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Jun. 30, 2019
Jun. 30, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Impairments and Other Charges              
Goodwill impairments $ 27,800         $ 27,798 $ 155,973
Intangible asset impairment           83,624 47,731
Oil and gas related assets           24,543  
Severance and transaction related costs         $ 6,228 19,070 11,447
Other Asset Impairment Charges         1,325 19,590 43,220
Total         66,731 410,631 301,939
Provision for retirement of assets           83,600 47,700
US Segment              
Impairments and Other Charges              
Goodwill impairments   $ 52,200          
US Segment | Drilling rigs and related equipment              
Impairments and Other Charges              
Impairment of assets           87,333  
Recorded impairment 33,300            
Impairment wrote down 54,000            
Provision for retirement of assets $ 87,300            
Canada Segment | Drilling rigs and related equipment              
Impairments and Other Charges              
Impairment of assets         58,545   17,818
Canada Segment | Other machinery and equipment              
Impairments and Other Charges              
Provision for retirement of assets         58,500   17,800
International              
Impairments and Other Charges              
Goodwill impairments     $ 75,600        
International | Drilling rigs and related equipment              
Impairments and Other Charges              
Impairment of assets         215 117,113 17,927
Recorded impairment           30,500  
Impairment wrote down           86,600  
Impairment for underutilized rigs             2,500
Provision for retirement of assets           117,100  
Impairment loss             15,400
Drilling Solutions              
Impairments and Other Charges              
Goodwill impairments           11,436  
Drilling Solutions | Drilling rigs and related equipment              
Impairments and Other Charges              
Impairment of assets           28,624  
Drilling Solutions | Other machinery and equipment              
Impairments and Other Charges              
Provision for retirement of assets       $ 28,600      
Rig Services              
Impairments and Other Charges              
Goodwill impairments   $ 10,100 $ 18,000     16,362  
Impairment of assets         $ 418 2,936 7,823
Provision for obsolescence           $ 2,900 $ 7,800