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Acquisition of Cameron - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Apr. 02, 2016
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Business Acquisition [Line Items]          
Revenues   $ 7,164 $ 11,246 $ 15,312 $ 23,779
Merger and integration costs   335   335  
Cameron          
Business Acquisition [Line Items]          
Common stock received by Cameron shareholders 71.60%        
Cash payment in exchange of each share of common stock $ 14.44        
Revenues   1,500      
Pretax operating income   243      
Merger and integration costs   $ 254   $ 254  
After-tax merger and integration charges included in pro forma amounts         254
Cameron | Inventory Fair Value Adjustment          
Business Acquisition [Line Items]          
Additional after-tax amortization charges included in pro forma amounts         $ 105
After-tax amortization charges included in pro forma amounts     $ 105