v3.22.2

Restructuring and Other Charges - Narrative (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($) claimant	Dec. 31, 2021 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges (E)	$ 2,000,000	$ 597,000,000	$ 7,000,000	$ 598,000,000
Cash payments, restructuring			3,000,000		$ 15,000,000
Environmental remediation, payments	2,000,000		6
Fusina, Italy
Restructuring Cost and Reserve [Line Items]
Environmental remediation, payments			1,000,000
Other miscellaneous costs
Restructuring Cost and Reserve [Line Items]
Cash payments, restructuring			2,000,000		5,000,000
Layoff costs
Restructuring Cost and Reserve [Line Items]
Cash payments, restructuring			1,000,000		$ 10,000,000
2022 Restructuring Programs
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges (E)	2,000,000		7,000,000
2022 Restructuring Programs | Legal Matters, Other
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges (E)	1		5,000,000
2022 Restructuring Programs | One-time Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges (E)			1,000,000
2022 Restructuring Programs | Idling of Operations | Extrusions
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges (E)	$ 1		$ 2,000,000
2021 Restructuring Programs
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges (E)		597,000,000		$ 598,000,000
Number of employees separated | claimant				115
2021 Restructuring Programs | One-time Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges (E)				$ 568
2021 Restructuring Programs | Disposals | Aluminum Rolling Mill in Itapissuma, Brazil
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges (E)				1
2021 Restructuring Programs | Reversal of Reserve [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges (E)		1		2
2021 Restructuring Programs | Other miscellaneous costs
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges (E)		$ 3		4
2021 Restructuring Programs | Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges (E)				34
2021 Restructuring Programs | Legacy Tax Matters
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges (E)				$ 7

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Restructuring, Settlement And Impairment Provisions, Including Gain (Loss) On Disposition Of Assets And Business

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 17
-Subparagraph (f)
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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
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-Section 45
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