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Deferred Charges and Other Assets (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Deferred Charges and Other Assets |  |  |
Deferred turnaround and catalyst costs, net | $ 1,520 | $ 1,614 |
Income taxes receivable | 673 | 447 |
Investments in joint ventures | 530 | 201 |
Intangible assets, net | 142 | 148 |
Other | 501 | 491 |
Deferred charges and other assets, net | 3,366 | 2,901 |
Deferred Charges and Other Assets (Textual) |  |  |
Amortization expense, deferred refinery turnaround and catalyst costs and other assets | $ 650 | $ 575 | $ 542

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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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