Acquisition, Estimated Fair Values of Assets Acquired and Liabilities Assumed (Details) - Pure Biofuels [Member] $ in Millions	May 14, 2018 USD ($)
Fair Values of Assets Acquired, Goodwill, and Liabilities Assumed, Net
Current assets, net of cash acquired	$ 156
Property, plant, and equipment	137
Deferred charges and other assets	445
Current liabilities, excluding current portion of debt	(26)
Debt assumed, including current portion	(137)
Deferred income tax liabilities	(81)
Other long-term liabilities	(22)
Noncontrolling interest	(6)
Total consideration, net of cash acquired	$ 466

This element represents the fair value of the noncontrolling interest in the acquiree at the acquisition date.

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Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount recognized as of the acquisition date for the assets, including goodwill, in excess of (less than) the aggregate liabilities assumed, less the noncontrolling interest in the acquiree.

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Amount of total debt assumed at the acquisition date, including current portion.

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