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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2012
Changes in Carrying Amount of Goodwill | The following table details the changes in the carrying amount of goodwill:
|  | Alumina |  |  | Primary Metals |  |  | Global Rolled Products |  |  | Engineered Products and Solutions |  |  | Corporate* |  |  | Total |
Balance at December 31, 2010: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | $ | 12 |  |  | $ | 993 |  |  | $ | 207 |  |  | $ | 2,551 |  |  | $ | 1,293 |  |  | $ | 5,056 |
Accumulated impairment losses |  |  | - |  |  |  | - |  |  |  | - |  |  |  | (28 | ) |  |  | - |  |  |  | (28 | )
|  |  | 12 |  |  |  | 993 |  |  |  | 207 |  |  |  | 2,523 |  |  |  | 1,293 |  |  |  | 5,028 |
Acquisition of businesses |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 150 |  |  |  | - |  |  |  | 150 |
Translation |  |  | (1 | ) |  |  | (2 | ) |  |  | 1 |  |  |  | (7 | ) |  |  | (12 | ) |  |  | (21 | )
Balance at December 31, 2011: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  | 11 |  |  |  | 991 |  |  |  | 208 |  |  |  | 2,694 |  |  |  | 1,281 |  |  |  | 5,185 |
Accumulated impairment losses |  |  | - |  |  |  | - |  |  |  | - |  |  |  | (28 | ) |  |  | - |  |  |  | (28 | )
|  |  | 11 |  |  |  | 991 |  |  |  | 208 |  |  |  | 2,666 |  |  |  | 1,281 |  |  |  | 5,157 |
Acquisition of businesses |  |  | - |  |  |  | - |  |  |  | - |  |  |  | (1 | ) |  |  | - |  |  |  | (1 | )
Translation |  |  | (1 | ) |  |  | 6 |  |  |  | 6 |  |  |  | 12 |  |  |  | (9 | ) |  |  | 14 |
Balance at December 31, 2012: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  | 10 |  |  |  | 997 |  |  |  | 214 |  |  |  | 2,705 |  |  |  | 1,272 |  |  |  | 5,198 |
Accumulated impairment losses |  |  | - |  |  |  | - |  |  |  | - |  |  |  | (28 | ) |  |  | - |  |  |  | (28 | )
|  | $ | 10 |  |  | $ | 997 |  |  | $ | 214 |  |  | $ | 2,677 |  |  | $ | 1,272 |  |  | $ | 5,170 |
* | As of December 31, 2012, $1,247 of the amount reflected in Corporate is allocated to each of Alcoa’s four reportable segments ($161 to Alumina, $751 to Primary Metals, $62 to Global Rolled Products, and $273 to Engineered Products and Solutions) included in the table above for purposes of impairment testing (see Note A). This goodwill is reflected in Corporate for segment reporting purposes because it is not included in management’s assessment of performance by the four reportable segments.
Other Intangible Assets | Other intangible assets, which are included in Other noncurrent assets on the accompanying Consolidated Balance Sheet, were as follows:
December 31, 2012 |  | Gross carrying amount |  |  | Accumulated amortization |
Computer software |  | $ | 907 |  |  | $ | (664 | )
Patents and licenses |  |  | 133 |  |  |  | (88 | )
Other intangibles |  |  | 101 |  |  |  | (28 | )
Total amortizable intangible assets |  |  | 1,141 |  |  |  | (780 | )
Indefinite-lived trade names and trademarks |  |  | 46 |  |  |  | - |
Total other intangible assets |  | $ | 1,187 |  |  | $ | (780 | )
December 31, 2011 |  | Gross carrying amount |  |  | Accumulated amortization |
Computer software |  | $ | 902 |  |  | $ | (595 | )
Patents and licenses |  |  | 133 |  |  |  | (83 | )
Other intangibles* |  |  | 101 |  |  |  | (23 | )
Total amortizable intangible assets |  |  | 1,136 |  |  |  | (701 | )
Indefinite-lived trade names and trademarks* |  |  | 46 |  |  |  | - |
Total other intangible assets |  | $ | 1,182 |  |  | $ | (701 | )
* | In 2011, customer relationships were identified as an intangible asset ($31) related to the acquisition of an aerospace fastener business (see Note F) and were preliminarily classified as indefinite-lived in the table above. Upon the completion of the final valuation in 2012, it was determined that the customer relationships should have a finite life. As a result, the 2011 gross carrying amounts for indefinite-lived intangible assets and other intangible assets were revised to conform to the 2012 presentation.

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 47 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13854-109267 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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