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Related Party Transactions Related Party Transactions (Tables) | 3 Months Ended
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Mar. 31, 2019
Related Party Transactions [Abstract] |
Schedule of Related Party Transactions [Table Text Block] | The following table summarizes the revenues from related companies on our consolidated statements of operations:
| Three Months Ended March 31,
| 2019 |  | 2018
Revenues from related companies | $ | 109 |  |  | $ | 102 |
The following table summarizes the related company balances on our consolidated balance sheets:
| March 31, 2019 |  | December 31, 2018
Accounts receivable from related companies: |  |  |
FGT | $ | 32 |  |  | $ | 25 |
Phillips 66 | 33 |  |  | 42 |
Other | 54 |  |  | 44 |
Total accounts receivable from related companies | $ | 119 |  |  | $ | 111 |

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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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