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v3.19.3.a.u2

Equity In Net Assets Of Nonconsolidated Affiliates (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 USD ($) joint_venture | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |
Equity income | $ 1,268 | $ 2,163 | $ 2,132
Equity in net assets of nonconsolidated affiliates | 8,562 | 9,215 | 9,073
Basis Difference | $ 4,200 | 4,400 |
Number of joint ventures engaged in production, import and sale of products | joint_venture | 4 |  |
SGM |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Number of interests in other joint ventures | joint_venture | 3 |  |
Automotive China |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Equity income | $ 1,132 | 1,981 | 1,976
Equity in net assets of nonconsolidated affiliates | 7,044 | 7,779 |
Other joint ventures |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Equity income | 136 | 182 | $ 156
Equity in net assets of nonconsolidated affiliates | $ 1,518 | $ 1,436 |
SGM |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 50.00% | 50.00% |
SGM | SAIC |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 50.00% |  |
FAW-GM |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 0.00% | 50.00% |
PATAC |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 50.00% | 50.00% |
SGMS |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 49.00% | 49.00% |
SGMW |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 44.00% | 44.00% |
Shanghai OnStar |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 40.00% | 40.00% |
Shanghai OnStar | SGM |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 20.00% |  |
SGM Norsom |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 25.00% | 25.00% |
SGM Norsom | SGM |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 50.00% |  |
SGM Norsom | SAIC |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 25.00% |  |
SGM DY |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 25.00% | 25.00% |
SGM DY | SGM |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 50.00% |  |
SGM DY | SAIC |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 25.00% |  |
SGM DYPT |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 25.00% | 25.00% |
SGM DYPT | SGM |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 50.00% |  |
SGM DYPT | SAIC |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 25.00% |  |
SAIC-GMAC |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 35.00% | 35.00% |
SAIC-GMAC | SGM |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 20.00% |  |
SAIC-GMAC | Shanghai Automotive Group Finance Company Ltd. |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 45.00% |  |
SAIC-GMF Leasing Co., Ltd. |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 35.00% | 35.00% |
SAIC-GMF Leasing Co., Ltd. | SGM |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 20.00% |  |
SAIC-GMF Leasing Co., Ltd. | SAIC Financial Holdings Company |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 45.00% |  |
SGM Norsom, SGM DY and SGM DYPT | SGM |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 50.00% |  |
SGM Norsom, SGM DY and SGM DYPT | SAIC |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage | 25.00% |  |

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