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Supplemental Cash Flow Information (Tables) | 3 Months Ended
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Mar. 31, 2018
Supplemental Cash Flow Elements [Abstract] |
Supplemental Cash Flow Information |
|  | Three Months Ended March 31, |
|  | 2018 |  |  | 2017 |
|  | (in thousands) |
Net cash provided from operating activities included: |  |  |  |  |  |  |  |
Income taxes refunded from taxing authorities |  | $ | 7,518 |  |  | $ | — |
Interest paid |  |  | (57,536 | ) |  |  | (43,864 | )
Non-cash investing and financing activities included: |  |  |  |  |  |  |  |
Increase in asset retirement costs capitalized |  |  | 5,063 |  |  |  | 1,715 |
(Decrease) increase in accrued capital expenditures |  |  | (77,365 | ) |  |  | 39,569 |

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- References No definition available. + Details
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