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Business Segments - Revenues (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Segment Reporting Revenue Reconciling Item [Line Items]    
Total revenues $ 809,164 $ 305,175
Other Operations    
Segment Reporting Revenue Reconciling Item [Line Items]    
Total revenues [1] 29,653 5,618
Operating Segments | Contract Drilling    
Segment Reporting Revenue Reconciling Item [Line Items]    
Total revenues 328,153 159,055
Operating Segments | Pressure Pumping    
Segment Reporting Revenue Reconciling Item [Line Items]    
Total revenues 406,784 141,174
Operating Segments | Directional Drilling    
Segment Reporting Revenue Reconciling Item [Line Items]    
Total revenues 48,616  
Intersegment Elimination    
Segment Reporting Revenue Reconciling Item [Line Items]    
Total revenues [2] $ (4,042) $ (672)
[1] Other operations includes the Company’s oilfield rentals business, pipe handling components and related technology business, oil and natural gas working interests and Middle East/North Africa activities.
[2] Intercompany revenues consists of contract drilling intercompany revenues for services provided to other operations and also includes revenues from other operations for services provided to contract drilling, pressure pumping and within other operations.