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Revenue - Major Source (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | $ 32,614 | $ 30,744 | $ 65,437 | $ 59,811
Leased vehicle income | 1,989 | 2,304 | 4,056 | 4,625
Finance charge income | 1,062 | 1,036 | 2,072 | 2,052
Other income | 94 | 83 | 173 | 153
GM Financial net sales and revenue | 3,145 | 3,423 | 6,301 | 6,830
Net sales and revenue | 35,759 | 34,167 | 71,738 | 66,641
Operating Segments | Cruise |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 25 | 25 | 51 | 55
Net sales and revenue | 25 | 25 | 51 | 55
Operating Segments | GM Financial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Leased vehicle income | 1,989 | 2,304 | 4,056 | 4,625
Finance charge income | 1,062 | 1,036 | 2,072 | 2,052
Other income | 95 | 86 | 175 | 156
GM Financial net sales and revenue | 3,146 | 3,426 | 6,302 | 6,833
Net sales and revenue | 3,146 | 3,426 | 6,302 | 6,833
Eliminations/ Reclassifications |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | (25) | (26) | (50) | (51)
Leased vehicle income | 0 | 0 | 0 | 0
Finance charge income | 0 | 0 | 0 | 0
Other income | (1) | (3) | (2) | (3)
GM Financial net sales and revenue | (1) | (3) | (2) | (3)
Net sales and revenue | (26) | (29) | (52) | (54)
Automotive |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 32,614 | 30,744 | 65,437 | 59,811
Automotive | Operating Segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 32,614 | 30,745 | 65,437 | 59,807
Net sales and revenue | 32,614 | 30,745 | 65,437 | 59,807
Automotive | Operating Segments | GMNA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 28,760 | 27,932 | 58,216 | 53,889
Net sales and revenue | 28,760 | 27,932 | 58,216 | 53,889
Automotive | Operating Segments | GMI |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 3,807 | 2,792 | 7,120 | 5,878
Net sales and revenue | 3,807 | 2,792 | 7,120 | 5,878
Automotive | Corporate |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 47 | 21 | 100 | 40
Net sales and revenue | 47 | 21 | 100 | 40
Vehicle, parts and accessories |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 31,314 | 29,470 | 62,904 | 57,191
Vehicle, parts and accessories | Eliminations/ Reclassifications |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 0 | 0 | 0 | 0
Vehicle, parts and accessories | Automotive | Operating Segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 31,314 | 29,470 | 62,904 | 57,191
Vehicle, parts and accessories | Automotive | Operating Segments | GMNA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 27,826 | 26,993 | 56,398 | 51,913
Vehicle, parts and accessories | Automotive | Operating Segments | GMI |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 3,466 | 2,475 | 6,479 | 5,276
Vehicle, parts and accessories | Automotive | Corporate |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 22 | 2 | 27 | 2
Used vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 143 | 150 | 223 | 391
Used vehicles | Eliminations/ Reclassifications |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 0 | 0 | 0 | 0
Used vehicles | Automotive | Operating Segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 143 | 150 | 223 | 391
Used vehicles | Automotive | Operating Segments | GMNA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 137 | 137 | 212 | 365
Used vehicles | Automotive | Operating Segments | GMI |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 6 | 13 | 11 | 26
Used vehicles | Automotive | Corporate |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 0 | 0 | 0 | 0
Services and other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 1,158 | 1,124 | 2,310 | 2,229
Services and other | Operating Segments | Cruise |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 25 | 25 | 51 | 55
Services and other | Eliminations/ Reclassifications |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | (25) | (26) | (50) | (51)
Services and other | Automotive | Operating Segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 1,158 | 1,125 | 2,309 | 2,225
Services and other | Automotive | Operating Segments | GMNA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 797 | 802 | 1,606 | 1,611
Services and other | Automotive | Operating Segments | GMI |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | 336 | 304 | 630 | 576
Services and other | Automotive | Corporate |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Automotive net sales and revenue | $ 25 | $ 19 | $ 73 | $ 38

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