Deferred Charges and Other Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Deferred Charges and Other Assets
Deferred turnaround and catalyst costs, net	$ 1,749	$ 1,520
Income taxes receivable	343	673
Investments in joint ventures	542	530
Intangible assets, net	307	142
Goodwill	260	0
Other	431	501
Deferred charges and other assets, net	3,632	3,366
Deferred Charges and Other Assets (Textual)
Amortization expense, deferred refinery turnaround and catalyst costs and other assets	$ 668	$ 650	$ 575