Goodwill and Other Intangibles (Tables)

12 Months Ended

Dec. 31, 2019

The changes in the carrying amount of goodwill for the years ended December 31, 2019 and 2018 are as follows:



	2019						2018
(in millions)	Engine			Drivetrain			Engine			Drivetrain
Gross goodwill balance, January 1	$	1,343		$	1,012		$	1,360		$	1,024
Accumulated impairment losses, January 1	(502		)	—			(502		)	—
Net goodwill balance, January 1	$	841		$	1,012		$	858		$	1,024
Goodwill during the year:
Acquisitions*	—			7			—			2
Translation adjustment and other	(6		)	(12		)	(17		)	(14		)
Ending balance, December 31	$	835		$	1,007		$	841		$	1,012

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*	Acquisitions relate to the Company's 2019 purchase of Rinehart Motion Systems LLC and AM Racing LLC and the 2017 purchase of Sevcon.

The Company’s other intangible assets, primarily from acquisitions, consist of the following:



	December 31, 2019						December 31, 2018
(in millions)	Gross carrying amount		Accumulated amortization		Net carrying amount		Gross carrying amount		Accumulated amortization		Net carrying amount
Amortized intangible assets:
Patented and unpatented technology	$	154	$	70	$	84	$	152	$	61	$	91
Customer relationships	481		224		257		490		201		289
Miscellaneous	10		4		6		8		4		4
Total amortized intangible assets	645		298		347		650		266		384
Unamortized trade names	55		—		55		55		—		55
Total other intangible assets	$	700	$	298	$	402	$	705	$	266	$	439

A roll forward of the gross carrying amounts of the Company's other intangible assets is presented below:

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Acquisitions relate to the Company's 2019 purchase of Rinehart Motion Systems LLC and AM Racing LLC and the 2017 purchase of Sevcon.