Segment Information - (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Summarized financial information [Abstract]
Revenue	$ 2,670	$ 4,594
Profit (Loss) Before Taxes	(614)	(828)
Corporate
Summarized financial information [Abstract]
Revenue	0	0
Profit (Loss) Before Taxes	(32)	(49)
Interest expense, net
Summarized financial information [Abstract]
Revenue	0	0
Profit (Loss) Before Taxes	(55)	(54)
Impairment and restructuring charges
Summarized financial information [Abstract]
Revenue	0	0
Profit (Loss) Before Taxes	(160)	(573)
Merger and related costs
Summarized financial information [Abstract]
Revenue	0	0
Profit (Loss) Before Taxes	(102)	(28)
North America
Summarized financial information [Abstract]
Revenue	819	2,006
Profit (Loss) Before Taxes	(225)	(209)
Latin America
Summarized financial information [Abstract]
Revenue	277	493
Profit (Loss) Before Taxes	(66)	33
Europe/Africa/Russia Caspian
Summarized financial information [Abstract]
Revenue	611	895
Profit (Loss) Before Taxes	(19)	(20)
Middle East/Asia Pacific
Summarized financial information [Abstract]
Revenue	718	916
Profit (Loss) Before Taxes	49	62
Industrial Services
Summarized financial information [Abstract]
Revenue	245	284
Profit (Loss) Before Taxes	(4)	10
Total Operations
Summarized financial information [Abstract]
Revenue	2,670	4,594
Profit (Loss) Before Taxes	$ (265)	$ (124)