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Supplemental Cash Flow Information (Tables) | 12 Months Ended
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Dec. 31, 2019
Supplemental Cash Flow Elements [Abstract] |
Supplemental Cash Flow Information |
| Year Ended December 31, |
| 2019 |  |  | 2018 |  |  | 2017 |
| (in thousands) |
Net cash provided from operating activities included: |  |  |  |  |  |  |  |  |  |  |
Income taxes refunded from taxing authorities | $ | — |  |  | $ | 7,521 |  |  | $ | 1,024 |
Interest paid |  | (189,443 | ) |  |  | (207,433 | ) |  |  | (179,431 | )
Non-cash investing and financing activities included: |  |  |  |  |  |  |  |  |  |  |
Asset retirement costs capitalized, net | $ | 11,193 |  |  | $ | 28,826 |  |  | $ | 20,245 |
(Decrease) increase in accrued capital expenditures |  | (20,104 | ) |  |  | (119,021 | ) |  |  | 71,739 |

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