Business Combinations and Divestitures Carrying Amounts of the Major Assets and Liabilities Classes (Details) - U.S. Pressure Pumping and Pump-Down [Member] $ in Millions	Dec. 31, 2017 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Inventory, Current	$ 7
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment, Current	222
Disposal Group, Including Discontinued Operation, Goodwill, Current	162
Disposal Group, Including Discontinued Operation, Assets	391
Disposal Group, Including Discontinued Operation, Deferred Tax Liabilities	9
Disposal Group, Including Discontinued Operation, Other Liabilities	52
Disposal Group, Including Discontinued Operation, Liabilities, Current	$ 61