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Commitments and Contingencies - Narrative (Details) $ in Millions | 3 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 31, 2022 USD ($) | Sep. 30, 2021 USD ($) | Dec. 31, 2020 USD ($) | Jun. 30, 2022 USD ($) | Dec. 31, 2021 USD ($) | Jul. 31, 2021 defect | Jun. 30, 2021 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Maximum liability, guarantees |  |  |  | $ 3,400 | $ 3,100 |  |
Accrued Liabilities, Current and Other Liabilities, Noncurrent |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Estimated litigation liability |  |  |  | 1,300 | 1,400 |  |
Product liability |  |  |  | 617 | 587 |  |
Indirect Tax Matters |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Estimate of possible loss |  |  |  | 1,000 |  |  |
Chevrolet Bolt EV Recall |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Probable loss accrual |  | $ 1,200 |  |  |  |  | $ 812
Number of manufacturing defects | defect |  |  |  |  |  | 2 |
Chevrolet Bolt EV Recall | LG |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Amount awarded to other party |  | $ 1,900 |  |  |  |  |
Patent Royalty Matters |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Probable loss accrual |  |  |  |  | $ 300 |  |
Decrease in accrual during period | $ 100 |  |  |  |  |  |
Korea Wage Litigation - Former Subcontract Workers |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Probable loss accrual |  |  |  | 249 |  |  |
Estimate of possible loss |  |  |  | $ 95 |  |  |
Takata Passenger-side Airbags |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Increase in product warranty accrual |  |  | $ 1,100 |  |  |  |

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