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Supplemental Cash Flow Information - Supplemental Cash Flow Information (Detail) (USD $) In Thousands, unless otherwise specified | 6 Months Ended
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Jun. 30, 2014 | Jun. 30, 2013
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 The non cash activity for the current period related to the change in accrued capital expenditures. + References No definition available. + Details
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- Definition Increase decrease In asset retirement costs capitalized. + References No definition available. + Details
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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586 + Details
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- Definition The amount of cash paid for interest during the period net of cash paid for interest that is capitalized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586 + Details
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