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v3.19.3.a.u2

Debt - Secured Debt and Unsecured Debt (Details) - USD ($) | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Apr. 30, 2019 | Jan. 31, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Jul. 31, 2020 | Jan. 31, 2020
Debt Instrument [Line Items] |  |  |  |  |  |  |
Finance lease assets |  |  | $ 327,000,000 |  |  |  |
Finance lease costs |  |  | 170,000,000 |  |  |  |
Finance lease right of use assets obtained in exchange for lease obligations |  |  | 196,000,000 |  |  |  |
Finance lease payments for 2020 |  |  | 129,000,000 |  |  |  |
Finance lease payments for years 2021 to 2024 |  |  | 156,000,000 |  |  |  |
Finance lease payments thereafter |  |  | 354,000,000 |  |  |  |
Imputed interest |  |  | $ 329,000,000 |  |  |  |
Weighted-average discount rate on finance leases |  |  | 10.90% |  |  |  |
Weighted-average remaining lease term |  |  | 13 years 8 months 12 days |  |  |  |
Payments for finance leases |  |  | $ 183,000,000 |  |  |  |
Proceeds from issuance of debt (original maturities greater than three months) |  |  | $ 36,937,000,000 | $ 43,801,000,000 | $ 52,187,000,000 |  |
Automotive |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Weighted-average interest rate on outstanding long-term debt |  |  | 5.40% | 5.20% |  |  |
Revolving Credit Facility | GM Financial | Unsecured Debt |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Weighted-average interest rate |  |  | 4.73% |  |  |  |
Maximum | Revolving Credit Facility | GM Financial | Unsecured Debt |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt term |  |  | 4 years |  |  |  |
Line of Credit | Unsecured Debt |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Aggregate borrowing capacity |  | $ 3,000,000,000.0 |  |  |  |  |
Proceeds from issuance of debt (original maturities greater than three months) |  |  | $ 700,000,000 |  |  |  |
Line of Credit | GM Financial | Unsecured Debt |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Aggregate borrowing capacity | $ 2,000,000,000.0 |  |  |  |  |  |
Debt term | 364 days |  |  |  |  |  |
Debt renewal term | 364 days |  |  |  |  |  |
Line of Credit | Three-Year Revolving Credit Facility January 2019 | Unsecured Debt |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt term |  | 3 years |  |  |  |  |
Line of Credit | Revolving Credit Facility | GM Financial | Secured Debt |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Increase to maximum borrowing capacity |  |  | 225,000,000 |  |  |  |
Senior Notes | GM Financial | Unsecured Debt |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Amount of debt issued |  |  | $ 6,900,000,000 |  |  |  |
Weighted-average interest rate |  |  | 3.63% |  |  |  |
Weighted-average interest rate on outstanding long-term debt |  |  | 3.42% |  |  |  |
Senior Notes | GM Financial | Subsequent Event |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Amount of debt issued |  |  |  |  |  |  | $ 1,250,000,000
Stated interest rate |  |  |  |  |  |  | 2.90%
Notes Payable, Other Payables | GM Financial | Secured Debt | Securitization notes payable |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Amount of debt issued |  |  | $ 16,200,000,000 |  |  |  |
Weighted-average interest rate |  |  | 2.75% |  |  |  |
Weighted-average interest rate on outstanding long-term debt |  |  | 2.95% |  |  |  |
Forecast | Line of Credit | Three-Year Revolving Credit Facility January 2019 | Unsecured Debt |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Aggregate borrowing capacity |  |  |  |  |  | $ 2,000,000,000.0 |

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