XML 54 R43.htm IDEA: XBRL DOCUMENT v3.21.2

PROPERTY, PLANT AND EQUIPMENT - Schedule of Assets Held-for-Sale (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 30, 2021	Jun. 30, 2021
Change In Assets Held-For-Sale [Roll Forward]
Asset held for sale, beginning balance		$ 0
Sale of assets held-for-sale	$ (3,400)	(3,428)
Assets held for sale, ending balance	$ 10,088	$ 10,088

X

- Definition

Assets Held-For-Sale, Not Part Of Disposal Group, Sales

+ References

No definition available.

+ Details

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Namespace Prefix:	hp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Change In Assets Held-For-Sale

+ References

No definition available.

+ Details

Name:	hp_ChangeInAssetsHeldForSaleRollForward
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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 15
-Paragraph 4
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=123398962&loc=d3e400-110220

+ Details

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