Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2022

The following table details the weighted-average useful lives of structures and machinery and equipment by reporting segment (numbers in years):


	Structures	Machinery and equipment
Rolled Products	32	22
Building and Construction Systems	25	18
Extrusions	32	20


December 31,	2022		2021
Land and land rights	$	19	$	22
Structures:
Rolled Products*	1,022		1,107
Building and Construction Systems	96		96
Extrusions	152		150
Other	149		152
	1,419		1,505
Machinery and equipment:
Rolled Products*	4,299		4,816
Building and Construction Systems	204		203
Extrusions	523		523
Other	274		291
	5,300		5,833
	6,738		7,360
Less: accumulated depreciation and amortization	4,613		4,878
	2,125		2,482
Construction work-in-progress	236		169
	$	2,361	$	2,651

_____________________

*In November 2022, Arconic completed the sale of all of its operations in Russia (see Note S).

The following table details the weighted-average useful lives of software and other intangible assets by reporting segment (numbers in years):


	Software	Other intangible assets
Rolled Products	8	—
Building and Construction Systems	4	20
Extrusions	3	10

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).