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Business Segments - Depreciation, Depletion, Amortization and Impairment (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Segment Reporting Information [Line Items]      
Depreciation, depletion, amortization and impairment $ 849,178 $ 670,910 $ 1,003,873
Other Operations      
Segment Reporting Information [Line Items]      
Depreciation, depletion, amortization and impairment 24,865 41,511 42,803
Contract Drilling | Operating Segments      
Segment Reporting Information [Line Items]      
Depreciation, depletion, amortization and impairment 618,879 433,771 668,007
Pressure Pumping | Operating Segments      
Segment Reporting Information [Line Items]      
Depreciation, depletion, amortization and impairment 159,305 152,630 233,952
Directional Drilling | Operating Segments      
Segment Reporting Information [Line Items]      
Depreciation, depletion, amortization and impairment 40,270 36,504 52,223
Corporate Segment      
Segment Reporting Information [Line Items]      
Depreciation, depletion, amortization and impairment $ 5,859 $ 6,494 $ 6,888