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Supplemental Cash Flow Information (Tables) | 6 Months Ended
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Jun. 30, 2014
Supplemental Cash Flow Information |
|  | Six Months Ended June 30, |
|  | 2014 |  |  | 2013 |
|  | (in thousands) |
Net cash provided from operating activities included: |  |  |  |  |  |  |  |
Income taxes paid to (refunded from) taxing authorities |  | $ | 39 |  |  | $ | (119 | )
Interest paid |  |  | 89,381 |  |  |  | 74,940 |
Non-cash investing and financing activities included: |  |  |  |  |  |  |  |
Increase (decrease) in asset retirement costs capitalized |  |  | 5,516 |  |  |  | (2,385 | )
Increase in accrued capital expenditures |  |  | 15,211 |  |  |  | 74,428 |

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- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
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