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Inventories (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Inventory Disclosure [Abstract] |  |
Total productive material, supplies and work in process | $ 7,422 | $ 8,014
Finished product, including service parts | 9,039 | 7,353
Total inventories | 16,461 | $ 15,366
Inventory [Line Items] |  |
Inventory allowance | 2,200 |
Electric Vehicle Inventory |  |
Inventory [Line Items] |  |
Inventory allowance | $ 1,900 |

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