Impairments and Other Charges (Details) - Segments [Domain]		3 Months Ended			6 Months Ended
		Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated, Period Percent					16.00%
Tangible Asset Impairment Charges		$ 177,000,000			$ 494,000,000
Inventory Write-down		39,000,000			346,000,000
Restructuring Charges	[1]	306,000,000		$ 0	1,514,000,000	$ 0
Goodwill, Impairment Loss		0
Impairment of Intangible Assets (Excluding Goodwill)		8,000,000			172,000,000
Severance Costs		78,000,000			212,000,000
Other Restructuring Costs		0			152,000,000
Business Exit Costs		2,000,000			77,000,000
Other Deductions and Charges		2,000,000			61,000,000
Deductions (Charges)		306,000,000			1,713,000,000
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 $211 million attributable to Completion and Production, $89 million attributable to Drilling and Evaluation, and $6 million attributable to Corporate and other for the three months ended June 30, 2015. Includes $720 million attributable to Completion and Production,$727 million attributable to Drilling and Evaluation, and $67 million attributable to Corporate and other for the six months ended June 30, 2015.