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Related Party Transactions (Notes) | 12 Months Ended
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Dec. 31, 2018
Related Party Transactions [Abstract] |
Related Party Transactions | 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 joint venture partners of our joint ventures we consolidate, and 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 (in millions):
| December 31,
| 2018 |  | 2017
Balance sheet location |  |  |
Accounts receivable, net | $ | 48 |  |  | $ | 34 |
Other current assets | 2 |  |  | 8 |
Deferred charges and other assets | 55 |  |  | 23 |
| $ | 105 |  |  | $ | 65 |
Current portion of debt | $ | 6 |  |  | $ | 6 |
Accounts payable | 26 |  |  | 18 |
Other current liabilities | 7 |  |  | 4 |
Long-term debt | 148 |  |  | 155 |
Other long-term liabilities and deferred credits | 34 |  |  | 35 |
| $ | 221 |  |  | $ | 218 |
| Year Ended December 31,
| 2018 |  | 2017 |  | 2016
Income statement location |  |  |  |  |
Revenues |  |  |  |  |
Services | $ | 171 |  |  | $ | 73 |  |  | $ | 71 |
Product sales and other | 94 |  |  | 89 |  |  | 71 |
| $ | 265 |  |  | $ | 162 |  |  | $ | 142 |
Operating Costs, Expenses and Other |  |  |  |  |
Costs of sales | $ | 63 |  |  | $ | 20 |  |  | $ | 38 |
Other operating expenses | 91 |  |  | 100 |  |  | 75 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -URI http://asc.fasb.org/topic&trid=2122745 + Details
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