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Discontinued Operations (Details) - Discontinued Operations [Member] - Opel/Vauxhall Business [Member] - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Net sales and revenue | $ 140 | $ 339 | $ 1,008 | $ 1,507
Purchases and expenses | $ 243 | $ 297 | 648 | 1,134
Discontinued Operations [Member] |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Cash payments |  |  | 762 | 1,483
Cash receipts |  |  | $ 1,223 | $ 1,926

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