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v3.22.1

Contingencies and Commitments (Details) $ in Millions | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Dec. 31, 2021 USD ($) | Mar. 31, 2022 USD ($) location | Jun. 26, 2020 USD ($) entity
Loss Contingencies [Line Items] |  |  |
Number of cleanup locations | location |  | 30 |
Remediation reserve balance | $ 15 | $ 15 |
Remediation reserve balance, classified as a current liability | 6 | 6 |
Payments related to remediation expenses applied against the reserve |  | 1 |
Guarantees of third party related to project financing |  | 15 |
Combined fair value of guarantees |  | 6 |
Coverage limit | 80 |  |
Total amount committed under outstanding surety bonds |  | 46 |
Surety bonds, amount outstanding |  | 25 |
Bank Loan Obligations |  |  |
Loss Contingencies [Line Items] |  |  |
Letters of credit, total amount |  | 118 |
Other Noncurrent Liabilities and Deferred Credits | Separation Agreement |  |  |
Loss Contingencies [Line Items] |  |  |
Guarantees of third party related to project financing | $ 1,406 | 1,406 |
Lehman Brothers International (Europe) (“LBIE”) Claims |  |  |
Loss Contingencies [Line Items] |  |  |
Number of entities | entity |  |  | 2
Estimate of claim |  |  | $ 64
Alcoa Corporation Workers Compensation Claims |  |  |
Loss Contingencies [Line Items] |  |  |
Letters of credit, total amount outstanding |  | 53 |
Arconic Corporation Environmental Obligations |  |  |
Loss Contingencies [Line Items] |  |  |
Letters of credit, total amount outstanding |  | $ 17 |
Maximum | Recurring Costs of Managing Hazardous Substances and Environmental Programs |  |  |
Loss Contingencies [Line Items] |  |  |
Percentage of cost of goods sold (percent) |  | 1.00% |

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