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Equity In Net Assets of Nonconsolidated Affiliates (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity income | $ 271 | $ 637 | $ 685 | $ 1,285 |
Equity Method Investee [Member] |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Dividends declared but not paid | 865 |  | 865 |  |
Dividends received | 941 | 2,000 | 941 | 2,000 |
Undistributed earnings | 2,100 |  | 2,100 |  | $ 2,300
Automotive China JVs equity income [Member] |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity income | 235 | 592 | $ 611 | 1,189 |
Change in ownership percentage |  |  | 0.00% |  |
Net sales | 9,002 | 12,601 | $ 19,148 | 26,320 |
Net income | 499 | 1,194 | 1,266 | 2,371 |
Other joint ventures equity income [Member] |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity income | $ 36 | $ 45 | $ 74 | $ 96 |

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