Quarterly report pursuant to Section 13 or 15(d)

Summary of Revenues Disaggregated Based on Timing of Revenue Recognition (Detail)

v3.10.0.1
Summary of Revenues Disaggregated Based on Timing of Revenue Recognition (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Disaggregation of Revenue [Line Items]        
Total revenues $ 754,235 $ 710,748 $ 2,423,259 $ 2,241,553
U.S. Operating Segment        
Disaggregation of Revenue [Line Items]        
Total revenues [1] 582,275   1,887,692  
International Operating Segment        
Disaggregation of Revenue [Line Items]        
Total revenues 171,960   535,567  
Goods and Services Transferred at a Point in Time        
Disaggregation of Revenue [Line Items]        
Total revenues 717,140   2,306,928  
Goods and Services Transferred at a Point in Time | U.S. Operating Segment        
Disaggregation of Revenue [Line Items]        
Total revenues [1] 561,849   1,824,138  
Goods and Services Transferred at a Point in Time | International Operating Segment        
Disaggregation of Revenue [Line Items]        
Total revenues 155,291   482,790  
Goods and Services Transferred Over Time        
Disaggregation of Revenue [Line Items]        
Total revenues 37,095   116,331  
Goods and Services Transferred Over Time | U.S. Operating Segment        
Disaggregation of Revenue [Line Items]        
Total revenues [1] 20,426   63,554  
Goods and Services Transferred Over Time | International Operating Segment        
Disaggregation of Revenue [Line Items]        
Total revenues $ 16,669   $ 52,777  
[1] U.S. segment revenues include eliminations of intercompany transactions with the international operating segment. See Note 15 for additional information on intercompany eliminations.