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- Definition

Guarantor Obligations, Indemnification Of Liability, Percentage

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- Definition

Insurance Annual Coverage Limit

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- Definition

Separation And Distribution Agreement, Surety Bonds, Amount Outstanding

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No definition available.

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- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
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- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Fair value portion of guarantee, including, but not limited to, financial standby letter of credit, fair value guarantee, guarantee of collection of scheduled contractual cash flows from financial assets, and contracts that contingently require the guarantor to make payments or perform services.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

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.

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Amount of recorded unconditional purchase obligation maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount of recorded unconditional purchase obligation to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of recorded unconditional purchase obligation to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of recorded unconditional purchase obligation to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of recorded unconditional purchase obligation to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of recorded unconditional purchase obligation to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Contingencies and Commitments - Commitments (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2024
Loss Contingencies [Line Items]
Purchase obligations due in 2025	$ 237			$ 237
Purchase obligations due in 2026	51			51
Purchase obligations due in 2027	42			42
Purchase obligations due in 2028	40			40
Purchase obligations due in 2029	39			39
Purchase obligations due thereafter	0			$ 0
Indemnification of liability (as a percent)				50.00%
Guarantees of third party related to project financing	6			$ 6
Combined fair value of guarantees	6	$ 6		6
Insurance annual coverage limit	80	80	$ 80
Total amount committed under outstanding surety bonds	44			44
Amount of outstanding surety bonds relating to these liabilities	21			21
Alcoa Corporation Workers Compensation Claims
Loss Contingencies [Line Items]
Letters of credit, total amount committed	48			48
Arconic Corporation Environmental Obligations
Loss Contingencies [Line Items]
Letters of credit, total amount committed	17			17
Letter of Credit
Loss Contingencies [Line Items]
Maximum borrowing capacity	90			90
Other Noncurrent Liabilities and Deferred Credits \| Separation Agreement
Loss Contingencies [Line Items]
Guarantees of third party related to project financing	$ 1,121	$ 1,131		$ 1,121