Impairments and Other Charges (Details) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated		5,000		12,000
Venezuela trade receivables exchanged for promissory note		$ 200		$ 200
Pre-tax loss on promissory note		148	$ 0	148	$ 0
Fixed asset impairments		92	177	2,537	494
Severance costs		126	78	261	212
Intangible asset impairments		0	8	87	172
Inventory write-downs		64	39	130	346
Other restructuring costs		9	0	40	152
Country closures		0	2	2	77
Other Deductions and Charges		(16)	2	(16)	61
Impairments and other charges	[1]	$ 423	$ 306	$ 3,189	$ 1,514

[1] Impairments and other charges are as follows:-For the three months ended June 30, 2016, includes $290 million attributable to Completion and Production, $129 million attributable to Drilling and Evaluation, and $4 million attributable to Corporate and other. -For the six months ended June 30, 2016, includes $2.0 billion attributable to Completion and Production, $1.1 billion attributable to Drilling and Evaluation, and $8 million attributable to Corporate and other. -For the three months ended June 30, 2015, 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 six 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.