Intangible Assets

3 Months Ended

Mar. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible assets consisted of:



	As of March 31, 2019						As of December 31, 2018
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Amortized Intangible Assets
License agreements	$	306	$	177	$	129	$	305	$	168	$	137
Customer relationships	248		145		103		251		141		110
Other	51		22		29		52		21		31
Total	$	605	$	344	$	261	$	608	$	330	$	278

Unamortized Intangible Assets
Goodwill ^(a)	$	1,086					$	1,092
Trademarks	$	548					$	547

__________


^(a)	The change in the carrying amount since December 31, 2018, primarily reflects currency translation.

For the three months ended March 31, 2019 and 2018, amortization expense related to amortizable intangible assets was approximately $17 million and $14 million, respectively. Based on the Company’s amortizable intangible assets at March 31, 2019, the Company expects amortization expense of approximately $41 million for the remainder of 2019, $48 million for 2020, $34 million for 2021, $25 million for 2022, $22 million for 2023 and $20 million for 2024, excluding effects of currency exchange rates.