Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets [Table Text Block]

Intangible assets consisted of the following at December 31:

	2018							2017							Weighted Average Life
	Cost		Accumulated Amortization			Net		Cost		Accumulated Amortization			Net
Customer relationships	$	745	$	(220	)	$	525	$	754	$	(138	)	$	616	10
Other intangible assets:
Licenses and intellectual property	122		(65		)	57		124		(55		)	69		13
Trademarks	90		(26		)	64		93		(17		)	76		13
Other	35		(22		)	13		31		(15		)	16		11
Total other intangible assets	$	247	$	(113	)	$	134	$	248	$	(87	)	$	161

Schedule of Goodwill

The gross carrying amounts and changes in the carrying amount of goodwill for the years ended December 31, 2018 and 2017 are as follows:

	Olefins Segment		Vinyls Segment			Total
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
Effects of changes in foreign exchange rates	—		(10		)	(10		)
Balance at December 31, 2018	$	30	$	972		$	1,002