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Commitments, Contingencies and Other Matters - Additional Information (Detail) - USD ($)
 3 Months Ended 12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2021
Other Commitments [Line Items]      
Letters of credit, collateral for retrospective premiums and retained losses     $ 71,500,000
Purchase Commitment Remaining Minimum Amount Committed     99,000,000.0
Deposit Revaluation Charge $ 9,200,000 $ 12,700,000  
Capacity reservation contract $ 0    
Deductible Per Occurrence For Workers Compensation Insurance Policy     1,500,000
Deductible Per Occurrence For Equipment Insurance Policy     1,000,000.0
Deductible Per Occurrence For General Liability Insurance Policy     10,000,000.0
Deductible Per Occurrence For Primary Automobile Liability Insurance Policy     2,000,000.0
Deductible Per Occurrence For Excess Automobile Liability Insurance Policy     5,000,000.0
Letter of Credit      
Other Commitments [Line Items]      
Amount drawn under letters of credit     $ 0
Change in Control Agreements      
Other Commitments [Line Items]      
Employee Entitlement Ratio On Sum Of Highest Salary And Average Bonus     2.00%
Continued Coverage Entitlement Of Welfare Plan Period     2 years
Change in Control Agreements | Specified Employees      
Other Commitments [Line Items]      
Agreement Extension Period     12 months
Agreement New Term Notification Period     90 days
Employment Agreements      
Other Commitments [Line Items]      
Initial Agreement Term     3 years
Agreement Termination Description     Under specified circumstances, we may terminate the executive’s employment under his Employment Agreement for Cause (as defined in the Employment Agreement) by either (i) providing written notice 10 days before the effective date of such termination and by granting at least 10 days to cure the cause for such termination or (ii) by providing written notice of such termination at least 30 days before the effective date of such termination and by granting at least 20 days to cure the cause for such termination, provided that if the matter is reasonably determined by us to not be capable of being cured, the executive may be terminated for cause on the date the written notice is delivered.
Accelerated Vesting Period Description     we will accelerate vesting of all options and restricted stock awards on the 60th day following the executive’s termination
Period Considered For Calculating Annual Cash Bonus Payment     3 years
Description Of Postemployment Benefits     If our decision to terminate other than for Cause or by the executive for Good Reason occurs following a Change in Control (as defined in his Employment Agreement, which for the President of Patterson-UTI Drilling includes a change in control of us or, in certain circumstances, of Patterson-UTI Drilling), the executive will generally be entitled to the same severance payments and benefits described above except that the pro-rated lump-sum payment for annual cash bonuses will be based on his highest annual cash bonus for the last three years, and the executive will be entitled to 36 months (in the case of the Chief Executive Officer) or 30 months (in the case of the Chief Financial Officer, General Counsel and President of Patterson-UTI Drilling) of subsidized benefits continuation coverage.
Employment Agreements | Minimum      
Other Commitments [Line Items]      
Agreement Termination Notice Period     30 days
Employment Agreements | Chief Executive Officer      
Other Commitments [Line Items]      
Employee Entitlement Ratio On Sum Of Base Salary And Average Cash Bonus     3.00%
Period For Subsidized Benefit Continuation Coverage     36 months
Employment Agreements | Chief Financial Officer, General Counsel and President      
Other Commitments [Line Items]      
Employee Entitlement Ratio On Sum Of Base Salary And Average Cash Bonus     2.50%
Period For Subsidized Benefit Continuation Coverage     30 months