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Segment Information - Summary of North America and International Revenue Disaggregated by Segment (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Segment Reporting Information [Line Items]        
Revenue $ 5,258 $ 8,541 $ 18,069 $ 24,689
Reservoir Characterization        
Segment Reporting Information [Line Items]        
Revenue 1,010 1,651 3,372 4,669
Drilling        
Segment Reporting Information [Line Items]        
Revenue 1,519 2,469 5,540 7,275
Production        
Segment Reporting Information [Line Items]        
Revenue 1,801 3,153 6,119 9,120
Cameron        
Segment Reporting Information [Line Items]        
Revenue 965 1,363 3,235 3,949
Other        
Segment Reporting Information [Line Items]        
Revenue (37) (95) (197) (324)
Operating Segments        
Segment Reporting Information [Line Items]        
Revenue 5,258 8,541 18,069 24,689
Operating Segments | Reservoir Characterization        
Segment Reporting Information [Line Items]        
Revenue 1,010 1,651 3,372 4,669
Operating Segments | Drilling        
Segment Reporting Information [Line Items]        
Revenue 1,519 2,469 5,540 7,275
Operating Segments | Production        
Segment Reporting Information [Line Items]        
Revenue 1,801 3,153 6,119 9,120
Operating Segments | Cameron        
Segment Reporting Information [Line Items]        
Revenue 965 1,363 3,235 3,949
Eliminations & other        
Segment Reporting Information [Line Items]        
Revenue 10 62 98 171
Eliminations & other | Reservoir Characterization        
Segment Reporting Information [Line Items]        
Revenue 4 5 13 15
Eliminations & other | Drilling        
Segment Reporting Information [Line Items]        
Revenue 28 56 118 160
Eliminations & other | Production        
Segment Reporting Information [Line Items]        
Revenue 1 1 2 2
Eliminations & other | Cameron        
Segment Reporting Information [Line Items]        
Revenue (7) 2 14 32
Eliminations & other | Other        
Segment Reporting Information [Line Items]        
Revenue (16) (2) (49) (38)
North America | Operating Segments        
Segment Reporting Information [Line Items]        
Revenue 1,157 2,850 4,620 8,389
North America | Operating Segments | Reservoir Characterization        
Segment Reporting Information [Line Items]        
Revenue 143 299 508 756
North America | Operating Segments | Drilling        
Segment Reporting Information [Line Items]        
Revenue 226 552 1,018 1,680
North America | Operating Segments | Production        
Segment Reporting Information [Line Items]        
Revenue 462 1,426 1,937 4,218
North America | Operating Segments | Cameron        
Segment Reporting Information [Line Items]        
Revenue 326 589 1,173 1,771
North America | Operating Segments | Other        
Segment Reporting Information [Line Items]        
Revenue   (16) (16) (36)
International | Operating Segments        
Segment Reporting Information [Line Items]        
Revenue 4,091 5,629 13,351 16,129
International | Operating Segments | Reservoir Characterization        
Segment Reporting Information [Line Items]        
Revenue 863 1,347 2,851 3,898
International | Operating Segments | Drilling        
Segment Reporting Information [Line Items]        
Revenue 1,265 1,861 4,404 5,435
International | Operating Segments | Production        
Segment Reporting Information [Line Items]        
Revenue 1,338 1,726 4,180 4,900
International | Operating Segments | Cameron        
Segment Reporting Information [Line Items]        
Revenue 646 772 2,048 2,146
International | Operating Segments | Other        
Segment Reporting Information [Line Items]        
Revenue $ (21) $ (77) $ (132) $ (250)