Business acquisition aggregate consideration to be paid.

No definition available.

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- Definition

Business acquisition number of drilling rigs acquired.

+ References

No definition available.

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- Definition

Increase in goodwill due to measurement period adjustments.

+ References

No definition available.

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- Definition

Number of horsepower of fracturing equipment.

+ References

No definition available.

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- Definition

Number of rigs.

+ References

No definition available.

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- Definition

With respect to a business combination completed during the period, this element provides a description of the business, other than the name, which may include the industry, size, products and other important information.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
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- Definition

Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

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Period Type:	duration

- Definition

Number of shares of equity interests issued or issuable to acquire entity.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Acquisitions - Additional Information (Detail) shares in Thousands			3 Months Ended	9 Months Ended
	Oct. 11, 2017 USD ($) shares	Apr. 20, 2017 USD ($) Rigs hp shares	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)
Business Acquisition [Line Items]
Goodwill				$ 612,473,000		$ 611,473,000
Merger and integration related costs			$ 9,449,000	2,738,000	$ 65,798,000
Contract Drilling
Business Acquisition [Line Items]
Goodwill				395,060,000		395,060,000
Pressure Pumping
Business Acquisition [Line Items]
Goodwill				121,444,000		121,444,000
Oilfield Rentals
Business Acquisition [Line Items]
Goodwill				6,284,000		6,284,000
Directional Drilling
Business Acquisition [Line Items]
Goodwill				$ 89,685,000		$ 88,685,000
Seventy Seven Energy Inc.
Business Acquisition [Line Items]
Shares of common stock exchange in business acquisition \| shares		46,298
Repayment of outstanding debt		$ 472,000,000
Merger date				Apr. 20, 2017
Total fair value of the consideration transferred		$ 1,511,396,000
Number of drilling rigs acquired \| Rigs		91
Number of horsepower of fracturing equipment \| hp		500,000
Goodwill deductible for tax purposes		$ 0
Goodwill		436,554,000
Merger and integration related costs					$ 36,700,000
Seventy Seven Energy Inc. \| Contract Drilling
Business Acquisition [Line Items]
Goodwill		309,000,000
Seventy Seven Energy Inc. \| Pressure Pumping
Business Acquisition [Line Items]
Goodwill		121,000,000
Seventy Seven Energy Inc. \| Oilfield Rentals
Business Acquisition [Line Items]
Goodwill		$ 6,300,000
Seventy Seven Energy Inc. \| APEX Class Rigs
Business Acquisition [Line Items]
Number of rigs \| Rigs		36
MS Directional
Business Acquisition [Line Items]
Shares of common stock exchange in business acquisition \| shares	8,798
Repayment of outstanding debt	$ 63,000,000
Merger date				Oct. 11, 2017
Total fair value of the consideration transferred	257,275,000
Goodwill	89,685,000
Aggregate consideration to be paid by the company	69,800,000
Business acquisition, description of acquired entity				MS Directional is a leading directional drilling services company in the United States, with operations in most major producing onshore oil and gas basins. MS Directional provides a comprehensive suite of directional drilling services, including directional drilling, downhole performance motors, directional surveying, measurement while drilling, and wireline steering tools.
Increase in goodwill due to measurement period adjustments	1,000,000
MS Directional \| Directional Drilling
Business Acquisition [Line Items]
Goodwill	$ 89,685,000,000