XML 39 R28.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Equity In Net Assets Of Nonconsolidated Affiliates (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2016
Equity Method Investments and Joint Ventures [Abstract] |
Schedule of Equity Income [Table Text Block] |
| Three Months Ended |  | Six Months Ended
| June 30, 2016 |  | June 30, 2015 |  | June 30, 2016 |  | June 30, 2015
Automotive China JVs equity income | $ | 471 |  |  | $ | 503 |  |  | $ | 989 |  |  | $ | 1,022 |
Other joint ventures equity income | 189 |  |  | 21 |  |  | 231 |  |  | 55 |
Total Equity income | $ | 660 |  |  | $ | 524 |  |  | $ | 1,220 |  |  | $ | 1,077 |

X
- Definition Tabular disclosure of the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied including gain (loss) on disposition of interest in nonconsolidated affiliates. + References No definition available. + Details
Name: | gm_ScheduleOfEquityIncomeTableTextBlock
Namespace Prefix: | gm_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration