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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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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				6 Months Ended
	Apr. 18, 2017 USD ($)	Apr. 18, 2017 SEK (kr)	Jun. 30, 2018 USD ($) Investment	Mar. 31, 2018 USD ($)	Mar. 31, 2018 SEK (kr)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) Investment	Jun. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)
Schedule Of Equity Method Investments [Line Items]
Number of equity method investments \| Investment			1				1
Loss from equity method investment			$ (16)			$ (8)	$ (30)	$ (8)
Equity investments after consideration of foreign exchange movements			134				134		$ 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			(16)			$ (8)	(30)	$ (8)
Equity investments after consideration of foreign exchange movements			$ 134				$ 134
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