Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Properties, Plants, and Equipment, Net - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Asset impairment charges		$ 15	$ 5	$ 442
Depreciation		$ 232	$ 236	$ 234
Arconic Engines
Property, Plant and Equipment [Line Items]
Asset impairment charges	$ 428
Arconic Engines \| Property, Plant and Equipment
Property, Plant and Equipment [Line Items]
Asset impairment charges	198
Arconic Engines \| Indefinite-lived Intangible Assets
Property, Plant and Equipment [Line Items]
Asset impairment charges	197
Arconic Engines \| Other Noncurrent Assets
Property, Plant and Equipment [Line Items]
Asset impairment charges	33
Arconic Engines \| Engine Products
Property, Plant and Equipment [Line Items]
Asset impairment charges	247
Arconic Engines \| Engineered Structurs Segments
Property, Plant and Equipment [Line Items]
Asset impairment charges	$ 181