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Segment Reporting - Revenues and long-lived assets by geographic region (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
GM Financial | $ 12,760 | $ 13,414 | $ 13,812
Net Sales and Revenue | 156,735 | 127,004 | 122,485
Long-Lived Assets | $ 77,950 | $ 79,044 | 77,451
MEXICO | Assets, Total | Geographic Concentration Risk |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Concentration risk, percentage | 11.00% | 10.00% |
Automotive | U.S. |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Automotive net sales and revenue | $ 116,798 | $ 92,771 | 89,204
Long-Lived Assets | 30,201 | 27,192 | 24,932
Automotive | Non-U.S. |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Automotive net sales and revenue | 27,177 | 20,819 | 19,469
Long-Lived Assets | 14,907 | 13,771 | 12,516
GM Financial |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
GM Financial | 12,760 | 13,414 | 13,812
GM Financial | U.S. |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
GM Financial | 11,035 | 11,712 | 12,227
Long-Lived Assets | 29,411 | 34,452 | 36,773
GM Financial | Non-U.S. |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
GM Financial | 1,725 | 1,702 | 1,585
Long-Lived Assets | $ 3,431 | $ 3,629 | $ 3,230

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