
	Rolled Products		Building and Construction Systems		Extrusions		Total
Balances at December 31, 2020:
Goodwill	$	254	$	99	$	65	$	418
Accumulated impairment losses	—		(28)		—		(28)
Goodwill, net	254		71		65		390
Impairment (B)	—		—		(65)		(65)
Translation	(1)		(2)		—		(3)
Balances at December 31, 2021:
Goodwill	253		97		65		415
Accumulated impairment losses	—		(28)		(65)		(93)
Goodwill, net	253		69		—		322
Divestitures (S)	(14)		—		—		(14)
Translation	(15)		(1)		—		(16)
Balances at December 31, 2022:
Goodwill	224		96		65		385
Accumulated impairment losses	—		(28)		(65)		(93)
Goodwill, net	$	224	$	68	$	—	$	292

In 2021, Arconic recognized an impairment charge of $65 for the Extrusions reporting unit based on the result of the annual review of goodwill for impairment (see Goodwill in Note B).

Other intangible assets, which are included in Other noncurrent assets on the accompanying Consolidated Balance Sheet, were as follows:


December 31, 2022	Gross carrying amount		Accumulated amortization		Net carrying amount
Computer software*	$	545	$	(521)	$	24
Patents and licenses	27		(27)		—
Other	21		(18)		3
Total other intangible assets	$	593	$	(566)	$	27


December 31, 2021	Gross carrying amount		Accumulated amortization		Net carrying amount
Computer software	$	555	$	(523)	$	32
Patents and licenses	27		(27)		—
Other	21		(15)		6
Total other intangible assets	$	603	$	(565)	$	38

*In 2022, Arconic recognized an impairment charge of $2 for the Extrusions segment as the result of a business review (See 2022 Actions in Note E).

Computer software consists primarily of software costs associated with an enterprise business solution within Arconic to drive common systems among all businesses.

Amortization expense related to the intangible assets in the tables above for the years ended December 31, 2022, 2021, and 2020 was $13, $17, and $17, respectively. During the next five years, amortization expense related to these intangible assets is expected to decrease from $9 in 2023 to $2 in 2027.