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Supplemental Cash Flow Information (Tables) | 9 Months Ended
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Sep. 30, 2019
Supplemental Cash Flow Elements [Abstract] |
Net Changes In Components of Operating Assets and Liabilities | The following table provides information regarding the net changes in components of operating assets and liabilities.
| Nine Months Ended September 30,
| 2019 |  | 2018
(Increase) decrease in: |  |  |
Accounts receivable | $ | 6,294 |  |  | $ | 87,318 |
Inventories | 709 |  |  | 9,159 |
Deferred charges | 135 |  |  | (4,899 | )
Other current assets | (10,358 | ) |  | (1,798 | )
Decrease in: |  |  |
Accounts payable | 46,530 |  |  | (68,974 | )
Accrued liabilities | (48,954 | ) |  | 6,524 |
Net changes in components of operating assets and liabilities | $ | (5,644 | ) |  | $ | 27,330 |

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