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Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets

Intangible assets consisted of:



	As of December 31, 2017												As of December 31, 2016
	Gross Carrying Amount				Accumulated Amortization				Net Carrying Amount				Gross Carrying Amount				Accumulated Amortization				Net Carrying Amount
Amortized Intangible Assets
License agreements ^(a)	$	281			$	140			$	141			$	261			$	109			$	152
Customer relationships ^(b)	242				119				123				224				90				134
Other ^(c)	51				18				33				46				12				34
	$	574			$	277			$	297			$	531			$	211			$	320

Unamortized Intangible Assets
Goodwill	$	1,073											$	1,007
Trademarks	$	553											$	550

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^(a)	Primarily amortized over a period ranging from 0 to 40 years with a weighted average life of 18 years.


^(b)	Primarily amortized over a period ranging from 3 to 20 years with a weighted average life of 12 years.


^(c)	Primarily amortized over a period ranging from 4 to 10 years with a weighted average life of 9 years.

Schedule of Intangible Assets Amortization Expense

Amortization expense relating to all intangible assets was as follows:



	Year Ended December 31,
	2017				2016				2015
License agreements	$	33			$	35			$	31
Customer relationships	24				23				21
Other	5				7				7
Total	$	62			$	65			$	59

Schedule of Goodwill

The carrying amounts of goodwill and related changes are as follows:



		Americas				International				Total Company

Gross goodwill as of January 1, 2016		$	2,124			$	967			$	3,091
	Accumulated impairment losses as of January 1, 2016	(1,587		)		(531		)		(2,118		)
Goodwill as of January 1, 2016		537				436				973
	Acquisitions	2				23				25
	Currency translation adjustments and other	13				(4		)		9
Goodwill as of December 31, 2016		552				455				1,007
	Acquisitions	—				5				5
	Currency translation adjustments and other	—				61				61
Goodwill as of December 31, 2017		$	552			$	521			$	1,073