The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the entity's ownership percentage in the investee multiplied by the investee's total equity.

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The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

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Enterprise value of joint venture calculated using discounted cash flow method.

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Number of equity method investments.

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Equity Method Investment - Additional Information (Details) kr in Millions, $ in Millions			3 Months Ended				9 Months Ended
	Apr. 18, 2017 USD ($)	Apr. 18, 2017 SEK (kr)	Sep. 30, 2018 USD ($) investment	Mar. 31, 2018 USD ($)	Mar. 31, 2018 SEK (kr)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) investment	Sep. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)
Schedule of Equity Method Investments [Line Items]
Number of equity method investments \| investment			1				1
Loss from equity method investment			$ 15			$ 10	$ 45	$ 18
Equity investments after consideration of foreign exchange movements			120				120		$ 98
Zenuity
Schedule of Equity Method Investments [Line Items]
Cash contribution to joint venture				$ 71	kr 600
Ownership percentage in joint venture	50.00%			50.00%	50.00%
Equity value of joint venture	$ 250
Share in equity value of joint venture	$ 125
Loss from equity method investment			15			$ 10	45	$ 18
Equity investments after consideration of foreign exchange movements			$ 120				$ 120
Zenuity \| Volvo Cars
Schedule of Equity Method Investments [Line Items]
Ownership percentage in joint venture	50.00%
Zenuity \| Autoliv
Schedule of Equity Method Investments [Line Items]
Cash contribution to joint venture	$ 111	kr 1,000