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Business Segments - Capital Expenditures (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting Information [Line Items]
Capital expenditures	$ 143,061	$ 28,677	$ 329,851	$ 80,511
Other Operations
Segment Reporting Information [Line Items]
Capital expenditures	8,647	2,401	21,016	5,621
Corporate
Segment Reporting Information [Line Items]
Capital expenditures	305	395	986	1,227
Operating Segments | Contract Drilling
Segment Reporting Information [Line Items]
Capital expenditures	106,879	17,551	222,426	46,001
Operating Segments | Pressure Pumping
Segment Reporting Information [Line Items]
Capital expenditures	$ 27,230	$ 8,330	$ 85,423	$ 27,662

X

- 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
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

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- Definition

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+ References

No definition available.

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