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Segment Reporting - Revenues and long-lived assets by geographic region (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
GM Financial | $ 14,184 | $ 12,760 | $ 13,414
Net Sales and Revenue | 171,842 | 156,735 | 127,004
Long-lived assets | $ 80,903 | $ 77,950 | $ 79,044
MEXICO | Assets, Total | Geographic Concentration Risk |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Concentration risk, percentage | 12.00% | 11.00% | 10.00%
Automotive | U.S. |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Automotive net sales and revenue | $ 127,472 | $ 116,798 | $ 92,771
Long-lived assets | 34,142 | 30,201 | 27,192
Automotive | Non-U.S. |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Automotive net sales and revenue | 30,186 | 27,177 | 20,819
Long-lived assets | 16,054 | 14,907 | 13,771
GM Financial |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
GM Financial | 14,184 | 12,760 | 13,414
GM Financial | U.S. |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
GM Financial | 12,133 | 11,035 | 11,712
Long-lived assets | 27,397 | 29,411 | 34,452
GM Financial | Non-U.S. |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
GM Financial | 2,051 | 1,725 | 1,702
Long-lived assets | $ 3,309 | $ 3,431 | $ 3,629

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