Goodwill, Intangibles and Other Assets (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The gross carrying amounts of goodwill for the years ended December 31, 2017 and 2016 are as follows:

	Olefins Segment		Vinyls Segment			Total
Balance at December 31, 2015	$	30	$	32		$	62
Goodwill acquired during the year	—		888			888
Effects of changes in foreign exchange rates	—		(3		)	(3		)
Balance at December 31, 2016	30		917			947
Measurement period adjustment	—		55			55
Effects of changes in foreign exchange rates	—		10			10
Balance at December 31, 2017	$	30	$	982		$	1,012

Finite-Lived Intangible Assets

Intangible assets consisted of the following at December 31:

	2017							2016							Weighted Average Life
	Cost		Accumulated Amortization			Net		Cost		Accumulated Amortization			Net
Customer relationships	$	754	$	(138	)	$	616	$	662	$	(51	)	$	611	10
Other intangible assets:
Licenses and    intellectual property	124		(55		)	69		121		(44		)	77		13
Trademarks	93		(17		)	76		88		(7		)	81		13
Other	31		(15		)	16		31		(13		)	18		12
Total other intangible       assets	$	248	$	(87	)	$	161	$	240	$	(64	)	$	176