XML 74 R63.htm IDEA: XBRL DOCUMENT v3.21.2

FAIR VALUE MEASUREMENT OF FINANCIAL INSTRUMENTS - Quantitative Information about Level 3 Unobservable Inputs (Details) - Level 3 $ in Thousands	Jun. 30, 2021 USD ($)
Monte Carlo simulation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 700
Monte Carlo simulation | Discount rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input	0.012
Monte Carlo simulation | Revenue Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input	0.184
Monte Carlo simulation | Risk free rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input	0.020
Probability analysis
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 9,096
Probability analysis | Discount rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input	0.005
Probability analysis | Payment amounts | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input	$ 5,250
Probability analysis | Payment amounts | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input	9,096
Probability analysis | Payment amounts | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input	$ 6,900
Probability analysis | Probabilities | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input	0.05
Probability analysis | Probabilities | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input	0.95
Probability analysis | Probabilities | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input	0.92

X

- Definition

Business Combination, Contingent Consideration, Liability, Measurement Input, Payment Amount

+ References

No definition available.

+ Details

Name:	hp_BusinessCombinationContingentConsiderationLiabilityMeasurementInputPaymentAmount
Namespace Prefix:	hp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 35
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=116859824&loc=d3e6819-128478

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476

+ Details

Name:	us-gaap_BusinessCombinationContingentConsiderationLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Value of input used to measure contingent consideration liability from business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

+ Details

Name:	us-gaap_BusinessCombinationContingentConsiderationLiabilityMeasurementInput
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

X

- 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.

+ Details

Name:	us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_ValuationTechniqueAxis=hp_ValuationTechniqueMonteCarloSimulationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=hp_MeasurementInputRevenueVolatilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputRiskFreeInterestRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ValuationTechniqueAxis=hp_ValuationTechniqueProbabilityAnalysisMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=hp_MeasurementInputPaymentAmountMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_WeightedAverageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=hp_MeasurementInputProbabilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: