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Equity In Net Assets of Nonconsolidated Affiliates (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | Dec. 31, 2016
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity income | $ 530 | $ 660 | $ 1,085 | $ 1,220 |
Equity Method Investee [Member] |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Dividends received | 1,600 | 1,900 | 1,600 | 2,000 |
Undistributed earnings | 1,700 |  | 1,700 |  | $ 2,200
Automotive China JVs equity income [Member] |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity income | 509 | 471 | $ 1,013 | 989 |
Change in ownership percentage |  |  | 0.00% |  |
Automotive China JVs' net sales | 10,815 | 10,281 | $ 22,016 | 21,472 |
Automotive China JVs' net income | 902 | 979 | 1,948 | 2,065 |
Other joint ventures equity income [Member] |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity income | $ 21 | $ 189 | $ 72 | $ 231 |

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