Impairments and Other Charges (Details)		3 Months Ended
		Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated		6,000
Fixed asset impairments		$ 2,445,000,000	$ 303,000,000
Severance costs		135,000,000	134,000,000
Intangible asset impairments		87,000,000	165,000,000
Inventory write-downs		66,000,000	309,000,000
Other restructuring costs		31,000,000	150,000,000
Country closures		2,000,000	75,000,000
Other Deductions and Charges		0	72,000,000
Impairments and other charges	[1]	2,766,000,000	$ 1,208,000,000
Goodwill, Impairment Loss		$ 0

[1] (b) Includes $1.8 billion attributable to Completion and Production, $1.0 billion attributable to Drilling and Evaluation, and $5 million attributable to Corporate and other for the three months ended March 31, 2016. Includes $510 million attributable to Completion and Production, $638 million attributable to Drilling and Evaluation, and $60 million attributable to Corporate and other for the three months ended March 31, 2015.