Receivables	6 Months Ended
Jun. 30, 2026
Receivables [Abstract]
Receivables	H. Receivables A wholly-owned special purpose entity (SPE) of the Company has an agreement with a financial institution to transfer up to $175 of certain customer receivables without recourse on a revolving basis. The agreement was entered into in 2023, most recently amended in November 2025, and matures on November 13, 2026. Company subsidiaries sell customer receivables to the SPE, which then transfers the receivables to the financial institution. The Company does not maintain effective control over the transferred receivables and accounts for the transfers as sales of receivables. Alcoa Corporation guarantees the performance obligations of the Company subsidiaries, and unsold customer receivables are pledged as collateral to secure the sold receivables. The SPE held unsold customer receivables of $812 and $486 pledged as collateral against the sold receivables as of June 30, 2026 and December 31, 2025, respectively. The Company continues to service the customer receivables and as customer payments are collected by the Company, the SPE transfers additional receivables to the financial institution rather than remitting cash. In the second quarter and six-month period of 2026, the Company sold gross customer receivables of $185 and $396, respectively, and reinvested collections of $185 and $396, respectively, from previously sold receivables. In the second quarter and six-month period of 2025, the Company sold gross customer receivables of $248 and $447, respectively, and reinvested collections of $248 and $447, respectively, from previously sold receivables. There were no cash remittances to or from the financial institution in the second quarters and six-month periods of 2026 and 2025. Cash collections from previously sold receivables yet to be reinvested of $36 and $69 were included in Accounts payable, trade on the Consolidated Balance Sheet as of June 30, 2026 and December 31, 2025, respectively. Cash received from sold receivables under the agreement are presented within operating activities on the Statement of Consolidated Cash Flows.

Receivables

6 Months Ended

Jun. 30, 2026

H. Receivables

A wholly-owned special purpose entity (SPE) of the Company has an agreement with a financial institution to transfer up to $175 of certain customer receivables without recourse on a revolving basis. The agreement was entered into in 2023, most recently amended in November 2025, and matures on November 13, 2026. Company subsidiaries sell customer receivables to the SPE, which then transfers the receivables to the financial institution. The Company does not maintain effective control over the transferred receivables and accounts for the transfers as sales of receivables.

Alcoa Corporation guarantees the performance obligations of the Company subsidiaries, and unsold customer receivables are pledged as collateral to secure the sold receivables. The SPE held unsold customer receivables of $812 and $486 pledged as collateral against the sold receivables as of June 30, 2026 and December 31, 2025, respectively.

The Company continues to service the customer receivables and as customer payments are collected by the Company, the SPE transfers additional receivables to the financial institution rather than remitting cash.

In the second quarter and six-month period of 2026, the Company sold gross customer receivables of $185 and $396, respectively, and reinvested collections of $185 and $396, respectively, from previously sold receivables. In the second quarter and six-month period of 2025, the Company sold gross customer receivables of $248 and $447, respectively, and reinvested collections of $248 and $447, respectively, from previously sold receivables. There were no cash remittances to or from the financial institution in the second quarters and six-month periods of 2026 and 2025.

Cash collections from previously sold receivables yet to be reinvested of $36 and $69 were included in Accounts payable, trade on the Consolidated Balance Sheet as of June 30, 2026 and December 31, 2025, respectively. Cash received from sold receivables under the agreement are presented within operating activities on the Statement of Consolidated Cash Flows.