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Property and Equipment - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2020	Mar. 31, 2020
Contract Drilling
Property Plant And Equipment [Line Items]
Percentage of excepted cash flows on undiscounted basis exceeding the carrying values of asset groups		15.00%
Pressure Pumping
Property Plant And Equipment [Line Items]
Percentage of excepted cash flows on undiscounted basis exceeding the carrying values of asset groups		22.00%
Directional Drilling
Property Plant And Equipment [Line Items]
Percentage of excepted cash flows on undiscounted basis exceeding the carrying values of asset groups		3.00%
Oilfield Rentals
Property Plant And Equipment [Line Items]
Percentage of excepted cash flows on undiscounted basis exceeding the carrying values of asset groups		9.00%
Rigs and Spare Rig Components That Would No Longer Be Marketed
Property Plant And Equipment [Line Items]
Impairment charge of drilling equipment	$ 8.3

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- Definition

Percentage of excepted cash flows on undiscounted basis exceeding the carrying values of long-lived assets.

+ References

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- Definition

The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109222650&loc=d3e1361-107760

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