Receivables	6 Months Ended
Jun. 30, 2013
Transfers And Servicing [Abstract]
Receivables	K. Receivables – Alcoa had three arrangements, each with a different financial institution, to sell certain customer receivables outright without recourse on a continuous basis. On March 22, 2013, Alcoa terminated these arrangements. All receivables sold under these arrangements were collected as of March 31, 2013. Alcoa serviced the customer receivables for the financial institutions at market rates; therefore, no servicing asset or liability was recorded. In March 2012, Alcoa entered into an arrangement with a financial institution to sell certain customer receivables without recourse on a revolving basis. The sale of such receivables is completed through the use of a bankruptcy remote special purpose entity, which is a consolidated subsidiary of Alcoa. This arrangement originally provided for minimum funding of $50 up to a maximum of $250 for receivables sold. In May 2013, the arrangement was amended to increase the maximum funding to $500 and include two additional financial institutions. The initial sale of receivables in March 2012 resulted in the setup of a deferred purchase price of $254. In addition to the $205 in cash funding received in 2012, Alcoa received additional net cash funding of $5 in the 2013 six-month period ($288 in draws and $283 in repayments). As of June 30, 2013, the deferred purchase price receivable was $377, which was included in Other receivables on the accompanying Consolidated Balance Sheet. The deferred purchase price receivable is reduced as collections of the underlying receivables occur; however, as this is a revolving program, the sale of new receivables will result in an increase in the deferred purchase price receivable. The net change in the deferred purchase price receivable was reflected in the (Increase) in receivables line item on the accompanying Statement of Consolidated Cash Flows. This activity is reflected as an operating cash flow because the related customer receivables are the result of an operating activity with an insignificant, short-term interest rate risk. The gross amount of receivables sold and total cash collections under this program since its inception was $6,650 and $6,063, respectively. Alcoa services the customer receivables for the financial institutions at market rates; therefore, no servicing asset or liability was recorded.

Receivables

6 Months Ended

Jun. 30, 2013

K. Receivables – Alcoa had three arrangements, each with a different financial institution, to sell certain customer receivables outright without recourse on a continuous basis. On March 22, 2013, Alcoa terminated these arrangements. All receivables sold under these arrangements were collected as of March 31, 2013. Alcoa serviced the customer receivables for the financial institutions at market rates; therefore, no servicing asset or liability was recorded.

In March 2012, Alcoa entered into an arrangement with a financial institution to sell certain customer receivables without recourse on a revolving basis. The sale of such receivables is completed through the use of a bankruptcy remote special purpose entity, which is a consolidated subsidiary of Alcoa. This arrangement originally provided for minimum funding of $50 up to a maximum of $250 for receivables sold. In May 2013, the arrangement was amended to increase the maximum funding to $500 and include two additional financial institutions. The initial sale of receivables in March 2012 resulted in the setup of a deferred purchase price of $254. In addition to the $205 in cash funding received in 2012, Alcoa received additional net cash funding of $5 in the 2013 six-month period ($288 in draws and $283 in repayments). As of June 30, 2013, the deferred purchase price receivable was $377, which was included in Other receivables on the accompanying Consolidated Balance Sheet. The deferred purchase price receivable is reduced as collections of the underlying receivables occur; however, as this is a revolving program, the sale of new receivables will result in an increase in the deferred purchase price receivable. The net change in the deferred purchase price receivable was reflected in the (Increase) in receivables line item on the accompanying Statement of Consolidated Cash Flows. This activity is reflected as an operating cash flow because the related customer receivables are the result of an operating activity with an insignificant, short-term interest rate risk. The gross amount of receivables sold and total cash collections under this program since its inception was $6,650 and $6,063, respectively. Alcoa services the customer receivables for the financial institutions at market rates; therefore, no servicing asset or liability was recorded.