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Business Segments - Capital Expenditures (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | $ 662,461 | $ 973,988 | $ 1,011,578
Operating Segments | Contract Drilling |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 504,508 | 744,949 | 784,686
Operating Segments | Pressure Pumping |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 122,782 | 194,117 | 198,061
Operating Segments | Oil and Natural Gas |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 31,245 | 29,888 | 22,884
Corporate and other |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | $ 3,926 | $ 5,034 | $ 5,947

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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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Period Type: | duration

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- Details
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Period Type: | duration