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Product Warranty and Related Liabilities (Tables) | 6 Months Ended
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Jun. 30, 2018
Product Warranties Disclosures [Abstract] |
Schedule of policy, product warranty and recall campaigns |
| Three Months Ended |  | Six Months Ended
| June 30, 2018 |  | June 30, 2017 |  | June 30, 2018 |  | June 30, 2017
Warranty balance at beginning of period | $ | 8,133 |  |  | $ | 9,063 |  |  | $ | 8,332 |  |  | $ | 9,069 |
Warranties issued and assumed in period – recall campaigns | 231 |  |  | 191 |  |  | 414 |  |  | 354 |
Warranties issued and assumed in period – product warranty | 536 |  |  | 539 |  |  | 1,057 |  |  | 1,105 |
Payments | (717 | ) |  | (786 | ) |  | (1,452 | ) |  | (1,595 | )
Adjustments to pre-existing warranties | (135 | ) |  | (128 | ) |  | (217 | ) |  | (88 | )
Effect of foreign currency and other | (58 | ) |  | 11 |  |  | (144 | ) |  | 45 |
Warranty balance at end of period | $ | 7,990 |  |  | $ | 8,890 |  |  | $ | 7,990 |  |  | $ | 8,890 |

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- Definition Table which summarizes the activity for policy, product warranty and recall campaigns for reporting periods. + References No definition available. + Details
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Namespace Prefix: | gm_
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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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