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Stock-based Compensation - Share-Based Compensation Plans (Detail) - shares	Dec. 31, 2021	Jun. 03, 2021
Two Thousand Twenty One Long Term Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares authorized for grant	13,467,480	13,500,000
Shares Underlying Awards Outstanding	2,483,250
Shares available for grant	8,288,582
Two Thousand fourteen Long Term Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares authorized for grant	0	4,900,000
Shares Underlying Awards Outstanding	4,986,734
Shares available for grant	0
Patterson-UTI Energy, Inc. 2005 Long-Term Incentive Plan, as amended
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares authorized for grant	0
Shares Underlying Awards Outstanding	1,487,500
Shares available for grant	0

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Number of Shares Outstanding

+ References

No definition available.

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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

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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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