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Supplemental Cash Flow Information (Tables) | 6 Months Ended
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Jun. 30, 2020
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.
| Six Months Ended June 30, |  |
| 2020 |  | 2019
(Increase) decrease in: |  |  |
Accounts receivable | $ | 178,509 |  |  | $ | 34,843 |
Inventories | (44,394) |  |  | (11,298) |
Deferred charges | 9,240 |  |  | 463 |
Other current assets | (9,919) |  |  | (14,804) |
Decrease in: |  |  |
Accounts payable | (93,080) |  |  | (5,705) |
Accrued liabilities | (20,838) |  |  | (41,406) |
Net changes in components of operating assets and liabilities | $ | 19,518 |  |  | $ | (37,907) |

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