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Goodwill and Other Intangible Assets
 12 Months Ended
Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets
The following table details the changes in the carrying value of Goodwill:
Rolled
Products		Building and
Construction
Systems		ExtrusionsTotal
Balances at December 31, 2019:
Goodwill$246 $97 $71 $414 
Accumulated impairment losses— (28)— (28)
Goodwill, net246 69 71 386 
Divestitures (S)
(1)— (6)(7)
Translation9 2 — 11 
Balances at December 31, 2020:
Goodwill254 99 65 418 
Accumulated impairment losses— (28)— (28)
Goodwill, net254 71 65 390 
Impairment (B)
— — (65)(65)
Translation(1)(2)— (3)
Balances at December 31, 2021:
Goodwill253 97 65 415 
Accumulated impairment losses— (28)(65)(93)
Goodwill, net$253 $69 $— $322 
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, 2021Gross
carrying
amount		Accumulated
amortization		Net carrying
amount
Computer software$555 $(523)$32 
Patents and licenses27 (27)— 
Other21 (15)6 
Total other intangible assets$603 $(565)$38 
December 31, 2020Gross
carrying
amount		Accumulated
amortization		Net carrying
amount
Computer software$550 $(510)$40 
Patents and licenses28 (28)— 
Other21 (14)7 
Total other intangible assets$599 $(552)$47 
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, 2021, 2020, and 2019 was $17, $17, and $10, respectively. During the next five years, amortization expense related to these intangible assets is expected to decrease from $16 in 2022 to $2 in 2026.