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Equity In Net Assets Of Nonconsolidated Affiliates Summarized Financial Data of NCAs (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Schedule of Equity Method Investments [Line Items] |  |  |
Current assets | $ 32,740 | $ 30,854 |
Non-current assets | 17,882 | 17,597 |
Total assets | 50,622 | 48,451 |
Current liabilities | 35,559 | 34,897 |
Non-current liabilities | 4,515 | 3,542 |
Total liabilities | 40,074 | 38,439 |
Noncontrolling interests | 866 | 872 |
Net sales | 52,037 | 52,607 | $ 49,562
Net Income | 4,528 | 4,632 | 4,495
Automotive China JVs [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Current assets | 16,506 | 17,370 |
Non-current assets | 14,012 | 14,188 |
Total assets | 30,518 | 31,558 |
Current liabilities | 21,574 | 22,642 |
Non-current liabilities | 1,689 | 1,639 |
Total liabilities | 23,263 | 24,281 |
Noncontrolling interests | 865 | 871 |
Net sales | 50,316 | 50,065 | 47,150
Net Income | 3,992 | 3,984 | 4,117
Other joint ventures [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Current assets | 16,234 | 13,484 |
Non-current assets | 3,870 | 3,409 |
Total assets | 20,104 | 16,893 |
Current liabilities | 13,985 | 12,255 |
Non-current liabilities | 2,826 | 1,903 |
Total liabilities | 16,811 | 14,158 |
Noncontrolling interests | 1 | 1 |
Net sales | 1,721 | 2,542 | 2,412
Net Income | $ 536 | $ 648 | $ 378

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