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INVESTMENTS AND RELATED-PARTY TRANSACTIONS (Tables) | 12 Months Ended
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Dec. 31, 2019
Investments And Related Party Transactions Disclosure [Abstract] |
Schedule of significant equity investments | As of December 31, 2019, Occidental’s significant equity investments primarily consisted of the following:
millions |  | % Interest |  |  | Carrying amount |
WES |  | 56.3 | % |  | $ | 5,128 |
OxyChem Ingleside Facility |  | 50.0 | % |  | 679 |
Dolphin Energy Limited |  | 24.5 | % |  | 240 |
Other |  | various |  |  | 342 |
Total |  |  |  | $ | 6,389 |
Summarized financial information of equity-method investments | The following table presents the summarized financial information of its equity-method investments combined for the years ended and as of December 31:
millions |  | 2019 |  |  | 2018 |  |  | 2017 |
Summarized Results of Operations(a) |  |  |  |  |  |
Revenues and other income |  | $ | 26,520 |  |  | $ | 28,091 |  |  | $ | 13,843 |
Costs and expenses |  | 24,084 |  |  | 25,029 |  |  | 12,230 |
Net income |  | $ | 2,436 |  |  | $ | 3,062 |  |  | $ | 1,613 |
Summarized Balance Sheet(b) |  |  |  |  |  |
Current assets |  | $ | 1,130 |  |  | $ | 5,587 |  |  | $ | 5,754 |
Non-current assets |  | $ | 21,158 |  |  | $ | 25,871 |  |  | $ | 25,108 |
Current liabilities |  | $ | 785 |  |  | $ | 4,879 |  |  | $ | 4,479 |
Long-term debt |  | $ | 8,673 |  |  | $ | 12,505 |  |  | $ | 14,091 |
Other non-current liabilities |  | $ | 859 |  |  | $ | 95 |  |  | $ | 414 |
Stockholders’ equity |  | $ | 11,971 |  |  | $ | 13,979 |  |  | $ | 11,878 |
(a) | The 2019 Summarized Results of Operations include results of Plains for the period beginning January 1, 2019 through the date Occidental’s interest was sold in September 2019.
(b) The 2019 Summarized Balance Sheet included the balance of WES due to the loss of control on December 30, 2019 and excluded the balances of Plains as the interest was sold in September 2019.
Summary of related-party transactions | During 2019, 2018 and 2017, Occidental entered into the following related-party transactions and had the following amounts due from or to its related parties for the years ended December 31:
millions |  | 2019 |  |  | 2018 |  |  | 2017 |
Sales (a,c) |  | $ | 691 |  |  | $ | 805 |  |  | $ | 636 |
Purchases (b,c) |  | $ | 463 |  |  | $ | 502 |  |  | $ | 387 |
Services |  | $ | 28 |  |  | $ | 52 |  |  | $ | 38 |
Advances and amounts due from related parties |  | $ | 133 |  |  | $ | 63 |  |  | $ | 63 |
Amounts due to related parties (d) |  | $ | 463 |  |  | $ | 46 |  |  | $ | 45 |
(a) | In 2019, 2018 and 2017, sales of Occidental-produced oil and NGL to Plains Pipeline affiliates accounted for 87 percent, 89 percent and 86 percent of these totals, respectively. In September 2019, Occidental sold its remaining interest in Plains Pipeline.
(b) | In 2019 and 2018, purchases of ethylene from the Ingleside ethylene cracker accounted for 98 percent of related-party purchases, respectively.
(c) | Excluded sales to and purchases from WES as it was a consolidated subsidiary from the date of the Acquisition through December 31, 2019.
(d) Amounts due to related parties at December 31, 2019 primarily consists of a 6.5% note payable to WES due 2038.

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- Definition Tabular disclosure of equity method investments including, but not limited to, name of each investee or group of investments, percentage ownership, difference between recorded amount of an investment and the value of the underlying equity in the net assets, and summarized financial information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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- Definition Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. + References No definition available. + Details
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