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PROPERTY, PLANT AND EQUIPMENT - Summary of Assets Held-for-Sale (Details) $ in Thousands	Dec. 31, 2023 USD ($)
Change In Assets Held-For-Sale [Roll Forward]
Assets held-for-sale, beginning balance	$ 645
Assets held-for-sale, ending balance	$ 0

X

- Definition

Change In Assets Held-For-Sale

+ References

No definition available.

+ Details

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Namespace Prefix:	hp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of assets held-for-sale that are not part of a disposal group, expected to be sold within a year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481372/852-10-55-10

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 15
-Paragraph 4
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482309/360-10-15-4

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant