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Related Party Transactions (Notes) | 12 Months Ended
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Dec. 31, 2020
Related Party Transactions [Abstract] |
Related Party Transactions | 12. Related Party Transactions Affiliate Balances We have transactions with affiliates which consist of (i) unconsolidated affiliates in which we hold an investment accounted for under the equity method of accounting (see Note 7 for additional information related to these investments); and (ii) external partners of our joint ventures we consolidate, and for periods prior to the sale of KML, our proportional method joint ventures, for which we include our proportionate share of balances and activity in our financial statements. The following tables summarize our affiliate balance sheet balances and income statement activity, other than amounts reported within our “Investments” balances and “Earnings from equity investments” activity:
| December 31,
| 2020 |  | 2019
| (In millions)
Balance sheet location |  |  |
Accounts receivable | $ | 41 |  |  | $ | 38 |
Other current assets | 6 |  |  | — |
Deferred charges and other assets | 109 |  |  | 86 |
| $ | 156 |  |  | $ | 124 |
Current portion of debt | $ | 6 |  |  | $ | 6 |
Accounts payable | 25 |  |  | 23 |
Other current liabilities | 4 |  |  | 3 |
Long-term debt | 154 |  |  | 157 |
Other long-term liabilities and deferred credits | 48 |  |  | 41 |
| $ | 237 |  |  | $ | 230 |
| Year Ended December 31,
| 2020 |  | 2019 |  | 2018
| (In millions)
Income statement location |  |  |  |  |
Revenues | $ | 206 |  |  | $ | 269 |  |  | $ | 265 |
Operating Costs, Expenses and Other |  |  |  |  |
Costs of sales | $ | 116 |  |  | $ | 75 |  |  | $ | 63 |
Other operating expenses | 119 |  |  | 132 |  |  | 91 |

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- Definition The entire disclosure for related party transactions. Examples of related party transactions include 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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -URI http://asc.fasb.org/topic&trid=2122745 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864 + Details
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