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Supplemental Cash Flow Information (Tables) | 3 Months Ended
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Mar. 31, 2016
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.
| Three Months Ended March 31,
| 2016 |  | 2015
(Increase) decrease in: |  |  |
Accounts receivable | $ | 10,810 |  |  | $ | 70,903 |
Inventories | (19,815 | ) |  | (16,973 | )
Deferred charges | (3,479 | ) |  | (3,103 | )
Other current assets | (5,090 | ) |  | (4,722 | )
Increase (decrease) in: |  |  |
Accounts payable | (19,850 | ) |  | (37,826 | )
Accrued liabilities | (14,643 | ) |  | (2,343 | )
Net changes in components of operating assets and liabilities | (52,067 | ) |  | 5,936 |

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