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Supplemental Cash Flow Information (Tables) | 12 Months Ended
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Dec. 31, 2013
Supplemental Cash Flow Elements [Abstract] |
Net Changes In Components Of Operating Assets And Liabilities |
| Year Ended December 31,
| 2013 |  | 2012 |  | 2011
(Increase) decrease in: |  |  |  |  |
Accounts receivable | $ | (96,300 | ) |  | $ | (34,299 | ) |  | $ | (66,208 | )
Inventories | 1,720 |  |  | 14,074 |  |  | (46,151 | )
Other current assets | (39,170 | ) |  | (9,593 | ) |  | (3,598 | )
Increase (decrease) in: |  |  |  |  |
Accounts payable | 41,718 |  |  | 53,146 |  |  | 33,049 |
Accrued liabilities | 45,846 |  |  | (10,263 | ) |  | 15,977 |
Net changes in components of operating assets and liabilities | $ | (46,186 | ) |  | $ | 13,065 |  |  | $ | (66,931 | )

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