v3.22.4

Restructuring and Other Charges - Narrative (Details) $ in Millions	3 Months Ended	12 Months Ended
	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($) segment	Dec. 31, 2020 USD ($) segment employee
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges		$ 456	$ 624	$ 188
Cash payments, restructuring		6	15	27
Asset impairments		92	34	15
Environmental remediation, payments		11	84	82
Fusina, Italy
Restructuring Cost and Reserve [Line Items]
Environmental remediation, payments		1
Extrusions
Restructuring Cost and Reserve [Line Items]
Asset impairments	$ 92	92
Impairment, Long-Lived Asset, Held-for-Use		90
Impairment of Intangible Assets, Finite-Lived	$ 2	2
Layoff costs
Restructuring Cost and Reserve [Line Items]
Cash payments, restructuring		3	10	24
Allocated costs, ParentCo
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges				2
Other Items
Restructuring Cost and Reserve [Line Items]
Cash payments, restructuring		3	$ 5	3
2020 Restructuring Programs
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges				$ 188
Expected number of employees separated | segment			500	550
2020 Restructuring Programs | Building and Construction System and Extrustions
Restructuring Cost and Reserve [Line Items]
Expected number of employees separated | employee				90
2020 Restructuring Programs | COVID-19
Restructuring Cost and Reserve [Line Items]
Expected number of employees separated | employee				460
2020 Restructuring Programs | Settlement of Certain Employee Retirement Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges				$ 199
2020 Restructuring Programs | Contingent Consideration Related to Disposal | Texarkana Rolling Mill and Cast House
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges				(25)
2020 Restructuring Programs | Disposals | Extrusions Plant in South Korea and Aluminum Rolling Mill in Brazil
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges				(25)
2020 Restructuring Programs | Costs Related to Planned Closures and Related Organizations | Building and Construction System and Extrustions
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges				21
2020 Restructuring Programs | Layoff costs
Restructuring Cost and Reserve [Line Items]
Cash payments, restructuring			$ 5	15
2020 Restructuring Programs | Layoff costs | Building and Construction System and Extrustions
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges				5
2020 Restructuring Programs | Layoff costs | COVID-19
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges				18
2020 Restructuring Programs | Reversal of Reserve
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges				(14)
2020 Restructuring Programs | Reversal of Reserve, Environmental Matter
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges				(5)
2020 Restructuring Programs | Legacy Non-Income Tax Matters in Brazil
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges				4
2020 Restructuring Programs | Allocated costs, ParentCo
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges				2
2020 Restructuring Programs | Other Items
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges				$ 8
2021 Restructuring Programs
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges			$ 624
2021 Restructuring Programs | Extrusions
Restructuring Cost and Reserve [Line Items]
Number of employees separated | segment			115
2021 Restructuring Programs | Settlement of Certain Employee Retirement Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges		47	$ 584
2021 Restructuring Programs | Disposals | Aluminum Rolling Mill in Itapissuma, Brazil
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges			1
2021 Restructuring Programs | Costs Related to Planned Closures and Related Organizations
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges			34
2021 Restructuring Programs | Layoff costs
Restructuring Cost and Reserve [Line Items]
Cash payments, restructuring			2
2021 Restructuring Programs | Reversal of Reserve
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges			4
2021 Restructuring Programs | Other Items
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges			2
2021 Restructuring Programs | Idling of Operations | Extrusions
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges			7
2021 Restructuring Programs | Legacy Tax Matters
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges			4
2021 Restructuring Programs | Legal Matters, Other
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges			$ 4
2022 Restructuring Programs
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges		456
2022 Restructuring Programs | Extrusions
Restructuring Cost and Reserve [Line Items]
Asset impairments		92
2022 Restructuring Programs | Settlement of Certain Employee Retirement Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges		1
2022 Restructuring Programs | Settlement of Certain Employee Retirement Benefits | United States
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges		46
2022 Restructuring Programs | Other Items
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges		5
2022 Restructuring Programs | Idling of Operations | Extrusions
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges		2
2022 Restructuring Programs | Legal Matters, Other
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges		$ 5

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