Goodwill and Intangible Assets - (Tables)

12 Months Ended

Dec. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The changes in the carrying amount of goodwill are detailed below by segment.

	North America			Latin America			Europe/ Africa/ Russia Caspian		Middle East/ Asia Pacific		Industrial Services			Total Goodwill
Balance at December 31, 2014	$	3,102		$	587		$	1,068	$	819	$	505		$	6,081
Currency translation adjustments	(5		)	(3		)	—		—		(3		)	(11		)
Balance at December 31, 2015	$	3,097		$	584		$	1,068	$	819	$	502		$	6,070

Schedule of Finite-Lived Intangible Assets

Intangible assets are comprised of the following at December 31:

	2015						2014
	Gross Carrying Amount		Less: Accumulated Amortization		Net		Gross Carrying Amount		Less: Accumulated Amortization		Net
Technology	$	866	$	452	$	414	$	870	$	393	$	477
Customer relationships (1)	251		106		145		488		191		297
Trade names (1)	108		89		19		120		92		28
Other	18		13		5		23		13		10
Total intangibles	$	1,243	$	660	$	583	$	1,501	$	689	$	812

⁽¹⁾  During 2015, we recorded impairments relating to our customer relationships and trade names intangible assets totaling $116 million. See Note 3. "Impairment and Restructuring Charges" for further discussion.

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

Estimated amortization expense for each of the subsequent five fiscal years is expected to be as follows:

Year	Estimated Amortization Expense
2016	$	87
2017	84
2018	77
2019	72
2020	62