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Investments in Affiliates Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($) affiliates	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Schedule of Equity Method Investments [Line Items]
Number of non-consolidated affiliates | affiliates	5
Investments in affiliates	$ 99	$ 91
Investment Income, Dividend	12	15	$ 17
Equity Method Investment, Impairment	$ 0	$ 0	$ 0
Promotora de Partes Electricas Automotrices
Schedule of Equity Method Investments [Line Items]
Noncontrolling Interest, Ownership Percentage	40.00%

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