GOODWILL AND OTHER INTANGIBLES (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]


(in millions)	As of October 1, 2020
Air Management	$	151
e-Propulsion & Drivetrain	272
Fuel Injection	—
Aftermarket	287
Total acquisition date goodwill	$	710

The changes in the carrying amount of goodwill are as follows:


	2020								2019
(in millions)	Air Management		e-Propulsion & Drivetrain		Fuel Injection		Aftermarket		Air Management		e-Propulsion & Drivetrain
Gross goodwill balance, January 1	$	1,337	$	1,007	$	—	$	—	$	1,343	$	1,012
Accumulated impairment losses, January 1	(502)		—		—		—		(502)		—
Net goodwill balance, January 1	$	835	$	1,007	$	—	$	—	$	841	$	1,012
Goodwill during the year:
Acquisitions*	151		272		—		287		—		7


Translation adjustment and other	29		34		—		12		(6)		(12)
Ending balance, December 31	$	1,015	$	1,313	$	—	$	299	$	835	$	1,007

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* Acquisitions relate to the Company's 2020 purchase of Delphi Technologies PLC and the 2019 purchase of Rinehart Motion Systems LLC and AM Racing LLC.

Summary of intangible assets gross roll forward

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


		December 31, 2020						December 31, 2019
(in millions)	Estimated useful lives (years)	Gross carrying amount		Accumulated amortization		Net carrying amount		Gross carrying amount		Accumulated amortization		Net carrying amount
Amortized intangible assets:
Patented and unpatented technology	7 - 15	$	383	$	77	$	306	$	154	$	70	$	84
Customer relationships	7 - 15	893		272		621		481		224		257
Miscellaneous	1 - 13	10		7		3		10		4		6
Total amortized intangible assets		1,286		356		930		645		298		347
Unamortized trade names	—	166		—		166		55		—		55
Total other intangible assets		$	1,452	$	356	$	1,096	$	700	$	298	$	402

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


	Gross carrying amounts				Accumulated amortization
(in millions)	2020		2019		2020		2019
Beginning balance, January 1	$	700	$	705	$	298	$	266
Acquisitions1	760		5		—		—
Abandonment2	(56)		—		(56)		—
Amortization2	—		—		89		39
Translation adjustment	48		(10)		25		(7)
Ending balance, December 31	$	1,452	$	700	$	356	$	298

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1 Acquisitions relate to the Company's 2020 purchase of Delphi Technologies PLC and the 2019 purchase of Rinehart Motion Systems LLC and AM Racing LLC.

2 As a result of an evaluation of the underlying technologies and management of the business subsequent to the acquisition of Delphi Technologies, the Company reduced the useful life of certain intangible assets during the fourth quarter of 2020 as they no longer provided future economic benefit. This resulted in accelerated amortization expense of $38 million and the removal of the related gross carrying amount and accumulated amortization of these assets.