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Supplemental Cash Flow Information (Tables) | 12 Months Ended
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Dec. 31, 2014
Supplemental Cash Flow Elements [Abstract] |
Net Changes In Components Of Operating Assets And Liabilities |
| Year Ended December 31,
| 2014 |  | 2013 |  | 2012
(Increase) decrease in: |  |  |  |  |
Accounts receivable | $ | 95,014 |  |  | $ | (96,300 | ) |  | $ | (34,299 | )
Inventories | 38,501 |  |  | 1,720 |  |  | 14,074 |
Deferred Charges | (8,935 | ) |  | — |  |  | — |
Other current assets | 62,305 |  |  | (39,170 | ) |  | (9,593 | )
Increase (decrease) in: |  |  |  |  |
Accounts payable | (73,307 | ) |  | 41,718 |  |  | 53,146 |
Accrued liabilities | (35,624 | ) |  | 45,846 |  |  | (10,263 | )
Net changes in components of operating assets and liabilities | $ | 77,954 |  |  | $ | (46,186 | ) |  | $ | 13,065 |

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