XML 68 R26.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Other (Income) Expenses, Net (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2012
Schedule Of Other Income, Net | H. Other (Income) Expenses, Net
|  | Third quarter ended September 30, |  |  | Nine months ended September 30, |
|  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
Equity loss (income) |  | $ | 4 |  |  | $ | 2 |  |  | $ | 16 |  |  | $ | (24 | )
Interest income |  |  | (6 | ) |  |  | (5 | ) |  |  | (16 | ) |  |  | (16 | )
Foreign currency (gains) losses, net |  |  | (3 | ) |  |  | 35 |  |  |  | (4 | ) |  |  | 5 |
Net (gain) loss from asset sales |  |  | (1 | ) |  |  | — |  |  |  | — |  |  |  | 1 |
Net loss (gain) on mark-to-market derivative contracts (N) |  |  | 4 |  |  |  | (14 | ) |  |  | 13 |  |  |  | (41 | )
Other, net |  |  | — |  |  |  | 13 |  |  |  | (5 | ) |  |  | 28 |
|  | $ | (2 | ) |  | $ | 31 |  |  | $ | 4 |  |  | $ | (47 | )

X
- Definition Provides a description and amount of each detailed component of other nonoperating income and expenses. The description provided for other nonoperating income may include: (a) dividends, (b) interest on securities, (c) profits on securities (net of losses), and (d) miscellaneous other income items. The description provided for other nonoperating expenses may include: (a) losses on securities (net of profits) and (b) miscellaneous income deductions. + References No definition available. + Details
Name: | aa_ComponentOfOtherIncomeExpenseNonoperatingTableTextBlock
Namespace Prefix: | aa_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration