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Automotive and GM Financial Debt (Tables) | 9 Months Ended
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Sep. 30, 2016
Automotive [Member] |
Debt Instrument [Line Items] |
Debt carrying amount and fair value [Table Text Block] |
| September 30, 2016 |  | December 31, 2015
| Carrying Amount |  | Fair Value |  | Carrying Amount |  | Fair Value
Total automotive debt | $ | 10,752 |  |  | $ | 12,148 |  |  | $ | 8,765 |  |  | $ | 9,088 |
Fair value utilizing Level 1 inputs |  |  | $ | 9,985 |  |  |  |  | $ | 6,972 |
Fair value utilizing Level 2 inputs |  |  | $ | 2,163 |  |  |  |  | $ | 2,116 |
GM Financial [Member] |
Debt Instrument [Line Items] |
Debt carrying amount and fair value [Table Text Block] |
| September 30, 2016 |  | December 31, 2015
| Carrying Amount |  | Fair Value |  | Carrying Amount |  | Fair Value
Secured debt | $ | 35,237 |  |  | $ | 35,418 |  |  | $ | 30,689 |  |  | $ | 30,671 |
Unsecured debt | 33,111 |  |  | 33,974 |  |  | 23,657 |  |  | 23,726 |
Total GM Financial debt | $ | 68,348 |  |  | $ | 69,392 |  |  | $ | 54,346 |  |  | $ | 54,397 |
Fair value utilizing Level 2 inputs |  |  | $ | 64,432 |  |  |  |  | $ | 48,716 |
Fair value utilizing Level 3 inputs |  |  | $ | 4,960 |  |  |  |  | $ | 5,681 |

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- Definition Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements. + References No definition available. + Details
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