Annual report pursuant to Section 13 and 15(d)

Property Plant and Equipment (Detail)

v3.3.1.900
Property Plant and Equipment (Detail) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Property, Plant and Equipment [Abstract]      
Machinery and Equipment, Gross $ 1,396,748,000 $ 1,383,308,000  
Rental Tools 521,662,000 494,924,000  
Buildings and Improvements, Gross 53,576,000 53,024,000  
Property, Plant and Equipment, Other, Gross 114,465,000 95,074,000  
Construction in Progress, Gross 21,770,000 70,668,000  
Property, Plant and Equipment, Gross 2,108,221,000 2,096,998,000  
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment 1,302,380,000 1,201,058,000  
Property, Plant and Equipment, Net 805,841,000 895,940,000  
Depreciation 151,900,000 142,500,000 $ 132,400,000
Business Acquisition [Line Items]      
Machinery and Equipment, Gross 1,396,748,000 1,383,308,000  
Rental Tools 521,662,000 494,924,000  
Buildings and Improvements, Gross 53,576,000 53,024,000  
Property, Plant and Equipment, Other, Gross 114,465,000 95,074,000  
Construction in Progress, Gross 21,770,000 70,668,000  
Property, Plant and Equipment, Gross 2,108,221,000 2,096,998,000  
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment 1,302,380,000 1,201,058,000  
Property, Plant and Equipment, Net 805,841,000 895,940,000  
Depreciation $ 151,900,000 $ 142,500,000 $ 132,400,000