v2.4.0.6

Goodwill (Tables) | 6 Months Ended
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Jun. 30, 2012
Goodwill [Abstract] |
Schedule of Goodwill [Table Text Block] | The following tables summarize the changes in the carrying amounts of Goodwill (dollars in millions):
| GMNA |  | GME |  | GMIO |  | GMSA |  | Total Automotive |  | GM Financial |  | Total
Balance at January 1, 2012 | $ | 26,399 |  |  | $ | 581 |  |  | $ | 610 |  |  | $ | 151 |  |  | $ | 27,741 |  |  | $ | 1,278 |  |  | $ | 29,019 |
Impairment charges | — |  |  | (590 | ) |  | (27 | ) |  | — |  |  | (617 | ) |  | — |  |  | (617 | )
Effect of foreign currency translation and other | — |  |  | 9 |  |  | (1 | ) |  | (5 | ) |  | 3 |  |  | — |  |  | 3 |
Balance at June 30, 2012 | $ | 26,399 |  |  | $ | — |  |  | $ | 582 |  |  | $ | 146 |  |  | $ | 27,127 |  |  | $ | 1,278 |  |  | $ | 28,405 |
Accumulated impairment charges at December 31, 2011 | $ | — |  |  | $ | (2,482 | ) |  | $ | (270 | ) |  | $ | — |  |  | $ | (2,752 | ) |  | $ | — |  |  | $ | (2,752 | )
Accumulated impairment charges at June 30, 2012 | $ | — |  |  | $ | (3,072 | ) |  | $ | (297 | ) |  | $ | — |  |  | $ | (3,369 | ) |  | $ | — |  |  | $ | (3,369 | )
Goodwill Impairment Charges [Table Text Block] | The following tables summarize the Goodwill impairment charges recorded in the three and six months ended June 30, 2012 and 2011 (dollars in millions):
| 2012
| GMNA |  | GME |  | GMIO |  | GMSA |  | Total Automotive |  | GM Financial |  | Total
Three months ended June 30 | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Six months ended June 30 | $ | — |  |  | $ | 590 |  |  | $ | 27 |  |  | $ | — |  |  | $ | 617 |  |  | $ | — |  |  | $ | 617 |
| 2011
| GMNA |  | GME |  | GMIO |  | GMSA |  | Total Automotive |  | GM Financial |  | Total
Effect of Adoption of ASU 2010-28(a) | $ | — |  |  | $ | 1,466 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,466 |  |  | $ | — |  |  | $ | 1,466 |
Three months ended June 30 | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Six months ended June 30 | $ | — |  |  | $ | 395 |  |  | $ | — |  |  | $ | — |  |  | $ | 395 |  |  | $ | — |  |  | $ | 395 |
_________
(a) | Impairment charges were recorded as a cumulative-effect adjustment to beginning Retained earnings upon the adoption of ASU 2010-28 in the three months ended March 31, 2011.
Goodwill balances and key assumptions [Table Text Block] | The following table summarizes the Goodwill balances and key assumptions, which are unobservable, utilized for each of our reporting units that required a Step 2 analysis (dollars and industry volumes in millions):
|  |  |  |  |  |  | Industry Volumes(a)(b) |  | Market Share(a)(b)
| Goodwill(c) |  | WACC |  | Long-Term Growth Rates |  | 2011/2012 |  | 2015/2016 |  | 2011/2012 |  | 2015/2016
GME - At January 1, 2011 | $ | 3,053 |  |  | 17.0 | % |  | 0.5 | % |  | 18.4 |  | 22.0 |  | 6.6 | % |  | 7.4 | %
GME - At March 31, 2011 | $ | 1,661 |  |  | 16.5 | % |  | 0.5 | % |  | 18.4 |  | 22.0 |  | 6.6 | % |  | 7.4 | %
GME - At March 31, 2012 | $ | 594 |  |  | 17.5 | % |  | 0.5 | % |  | 19.1 |  | 21.9 |  | 6.2 | % |  | 6.3 | %
GM Korea - At March 31, 2012 | $ | 564 |  |  | 14.8 | % |  | 3.0 | % |  | 81.0 |  | 97.1 |  | 1.4 | % |  | 1.1 | %
GM Korea - At June 30, 2012 | $ | 523 |  |  | 14.8 | % |  | 3.0 | % |  | 81.0 |  | 97.1 |  | 1.4 | % |  | 1.1 | %
_________
(a) | Industry volumes and market share for GM Korea are based on global industry volumes because GM Korea exports vehicles globally.
(b) | GME amounts at January 1, 2011 and March 31, 2011 are 2011 through 2015 and GME amounts at March 31, 2012 are 2012 through 2016. GM Korea amounts are 2012 through 2015.
(c) | Represents the balance of Goodwill evaluated for impairment under the Step 2 analysis.

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- Definition Goodwill balances and key assumptions used for Step 2 impairment test + References No definition available. + Details
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- Definition Goodwill impairment charges for periods presented in tabular presentation. + References No definition available. + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total. Disclosure details may include, but are not limited to, the carrying amount of goodwill, goodwill acquired during the year, goodwill impairment losses recognized, goodwill written-off due to the sale of a business unit, goodwill not yet allocated, and any other changes to goodwill. + References Reference 1: 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=6905597&loc=d3e13854-109267 Reference 2: 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=6905597&loc=d3e13816-109267 Reference 3: 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 4: 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. Reference 5: 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. + Details
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