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Revenue (Details)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2018
USD ($)
Division
Jun. 30, 2017
USD ($)
Jun. 30, 2018
USD ($)
Division
Countries
Jun. 30, 2017
USD ($)
Countries
Disaggregation of Revenue [Line Items]        
Number of business segments | Division 2   2  
Maximum Percentage Revenue from One Geographic Segment     10.00% 10.00%
Number of Countries Exceed Revenue Threshold | Countries     1 1
Revenue, Net $ 6,147 $ 4,957 $ 11,887 $ 9,236
North America [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net 3,834 2,770 7,351 5,001
Latin America [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net 479 508 936 971
Europe/Africa/CIS [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net 726 679 1,442 1,283
Middle East/Asia [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net 1,108 1,000 2,158 1,981
Completion And Production [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net 4,164 3,132 7,971 5,736
Drilling And Evaluation [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Net $ 1,983 $ 1,825 $ 3,916 $ 3,500
Minimum [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Performance Obligation, Description of Payment Terms     20  
Maximum [Member]        
Disaggregation of Revenue [Line Items]        
Revenue, Performance Obligation, Description of Payment Terms     60  
Sales Revenue, Net [Member] | UNITED STATES        
Disaggregation of Revenue [Line Items]        
Concentration Risk, Percentage     59.00% 51.00%