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Product Warranty and Related Liabilities (Tables) | 6 Months Ended
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Jun. 30, 2025
Accrued Liabilities and Other Liabilities [Abstract] |
Schedule of Policy, Product Warranty and Recall Campaigns |
| Three Months Ended |  | Six Months Ended
| June 30, 2025 |  | June 30, 2024 |  | June 30, 2025 |  | June 30, 2024
Product warranty and related liabilities |  |  |  |  |  |  |
Warranty balance at beginning of period | $ | 10,873 |  |  | $ | 9,356 |  |  | $ | 10,571 |  |  | $ | 9,295 |
Warranties issued and assumed in period – recall campaigns | 471 |  |  | 390 |  |  | 614 |  |  | 656 |
Warranties issued and assumed in period – product warranty | 887 |  |  | 888 |  |  | 1,676 |  |  | 1,556 |
Payments | (1,330) |  |  | (1,030) |  |  | (2,533) |  |  | (2,054) |
Adjustments to pre-existing warranties | 741 |  |  | 463 |  |  | 1,306 |  |  | 637 |
Effect of foreign currency and other | 56 |  |  | (23) |  |  | 64 |  |  | (47) |
Warranty balance at end of period | 11,698 |  |  | 10,043 |  |  | 11,698 |  |  | 10,043 |
Less: Supplier recoveries balance at end of period(a) | 475 |  |  | 646 |  |  | 475 |  |  | 646 |
Warranty balance, net of supplier recoveries at end of period | $ | 11,223 |  |  | $ | 9,397 |  |  | $ | 11,223 |  |  | $ | 9,397 |
__________ (a)The current portion of supplier recoveries is recorded in Accounts and notes receivable, net of allowance and the non-current portion is recorded in Other assets.
| Three Months Ended |  | Six Months Ended |
| June 30, 2025 |  | June 30, 2024 |  | June 30, 2025 |  | June 30, 2024 |
Product warranty expense, net of recoveries |  |  |  |  |  |  |  |
Warranties issued and assumed in period | $ | 1,358 |  |  | $ | 1,278 |  |  | $ | 2,290 |  |  | $ | 2,211 |  |
Supplier recoveries accrued in period | (186) |  |  | (79) |  |  | (337) |  |  | (137) |  |
Adjustments and other | 797 |  |  | 440 |  |  | 1,371 |  |  | 590 |  |
Warranty expense, net of supplier recoveries | $ | 1,969 |  |  | $ | 1,639 |  |  | $ | 3,323 |  |  | $ | 2,664 |  |

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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_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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