Impairment and Restructuring Charges - (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016 USD ($) Employee	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)
Restructuring Cost and Reserve [Line Items]
Combined Long-Lived and Intangible Asset Impairment Charges	$ 329		$ 447
Restructuring Costs	797	$ 76	839	$ 649
Restructuring Reserve, Severance	66		66
Restructuring reserve, contract termination	47		47
Inventory Write-down and Disposal Cost Charge			621
inventory disposal costs			34
Inventory Write Down-Cost of Sales			205	37
Inventory Write Down-Cost of Services			416	157
Inventory write-down	621		587	194
Loss on firm purchase commitment			51
Workforce reductions
Restructuring Cost and Reserve [Line Items]
Severance Costs	$ 98	61	145	308
Restructuring and Related Cost, Expected Number of Positions Eliminated | Employee	3,000
Contract terminations
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	$ 91	(3)		83
Payments for Restructuring	54
Impairment of buildings and improvements
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets Held-for-use	110	5	105	82
Impairment of machinery and equipment
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets Held-for-use	498	$ 13		$ 176
Machinery and Equipment
Restructuring Cost and Reserve [Line Items]
Carrying Amount of Impaired Long-Lived Assets, Held-for-use	754		754
Impairment of Long-Lived Assets Held-for-use	240
Customer Relationships and Trade Names [Member]
Restructuring Cost and Reserve [Line Items]
Carrying Amount of Intangible Assets, Finite-Lived	174		174
Impairment of Intangible Assets, Finite-lived	$ 89
North America
Restructuring Cost and Reserve [Line Items]
Fair Value Assumptions, Weighted Average Cost of Capital	10.00%
Middle East [Member]
Restructuring Cost and Reserve [Line Items]
Fair Value Assumptions, Weighted Average Cost of Capital	14.00%
Asia Pacific [Member]
Restructuring Cost and Reserve [Line Items]
Fair Value Assumptions, Weighted Average Cost of Capital	13.50%
Latin America
Restructuring Cost and Reserve [Line Items]
Inventory Write-down and Disposal Cost Charge			88
Latin America | Impairment of machinery and equipment
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets Held-for-use	$ 97
North America
Restructuring Cost and Reserve [Line Items]
Inventory Write-down and Disposal Cost Charge			209
North America | Impairment of machinery and equipment
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets Held-for-use	203
Europe/Africa/Russia Caspian
Restructuring Cost and Reserve [Line Items]
Inventory Write-down and Disposal Cost Charge			152
Europe/Africa/Russia Caspian | Impairment of machinery and equipment
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets Held-for-use	84
Middle East/Asia Pacific
Restructuring Cost and Reserve [Line Items]
Inventory Write-down and Disposal Cost Charge			125
Middle East/Asia Pacific | Impairment of machinery and equipment
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets Held-for-use	76
Industrial Services
Restructuring Cost and Reserve [Line Items]
Inventory Write-down and Disposal Cost Charge			$ 47
Industrial Services | Impairment of machinery and equipment
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets Held-for-use	$ 38