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Business Combinations and Divestitures - Divestitures Narrative (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Mar. 24, 2017
Dec. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Increase (decrease) in assets held-for-sale $ 243 $ 0    
Property, plant and equipment 4,111     $ 4,480
OneStim        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Consideration     $ 535  
Discontinued Operations, Held-for-sale        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Property, plant and equipment $ 27      
OneStim | Weatherford        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Percentage of voting interests acquired     30.00%  
OneStim | Schlumberger        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Percentage of voting interests acquired     70.00%