Impairments and Other Charges (Details)		3 Months Ended			9 Months Ended
		Sep. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated, Period Percent					21.00%
Tangible Asset Impairment Charges		$ 154,000,000			$ 648,000,000
Inventory Write-down		64,000,000			410,000,000
Impairments and other charges	[1]	381,000,000		$ 0	$ 1,895,000,000	$ 0
Goodwill, Impairment Loss		$ 0
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount		10.00%			10.00%
Impairment of Intangible Assets (Excluding Goodwill)		$ 37,000,000			$ 209,000,000
Severance Costs		96,000,000			308,000,000
Other Restructuring Costs		21,000,000			173,000,000
Business Exit Costs		4,000,000			81,000,000
Other Deductions and Charges		5,000,000			66,000,000
Deductions (Charges)		381,000,000			2,094,000,000
VENEZUELA
Restructuring Cost and Reserve [Line Items]
Foreign Currency Transaction Gain (Loss), Realized		$ 0	$ 199,000,000		$ 199,000,000
Historical Exchange Rate_Venezuela							6.3
Foreign Currency Exchange Rate, Remeasurement			192

[1] (b) Includes $228 million attributable to Completion and Production, $138 million attributable to Drilling and Evaluation, and $15 million attributable to Corporate and other for the three months ended September 30, 2015. Includes $949 million attributable to Completion and Production, $865 million attributable to Drilling and Evaluation, and $81 million attributable to Corporate and other for the nine months ended September 30, 2015.