Equity Method Investment - Summary of Unaudited Income Statement Information (Details) - Zenuity - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Schedule of Equity Method Investments [Line Items]
Net sales	$ 1	$ 2	$ 4	$ 4
Gross profit	0	0	0	0
Operating loss	(31)	(20)	(90)	(35)
Loss before income taxes	(30)	(20)	(90)	(35)
Net loss	$ (30)	$ (20)	$ (90)	$ (35)

The amount of gross profit (loss) reported by an equity method investment of the entity.

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Amount of income (loss) from continuing operations reported by an equity method investee.

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The amount of net income (loss) reported by an equity method investment of the entity.

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The amount of revenue from sale of goods and services reduced by sales returns, allowances, and discounts reported by an equity method investment of the entity.

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