XML 109 R89.htm IDEA: XBRL DOCUMENT v3.25.3

EARNINGS (LOSS) PER COMMON SHARE - Anti-Dilutive Shares Excluded from the Calculation of Diluted Earnings Per Share (Details) - $ / shares shares in Thousands	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Earnings Per Share [Abstract]
Potentially dilutive shares excluded as anti-dilutive (in shares)	2,877	2,355	2,451
Weighted-average price per share (in dollars per share)	$ 52.61	$ 60.28	$ 62.08

X

- Definition

Represents the weighted-average price per share of the shares excluded from the calculation of diluted earnings per share because their inclusion would have been anti-dilutive.

+ References

No definition available.

+ Details

Name:	hp_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePrice
Namespace Prefix:	hp_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482662/260-10-50-1

+ Details

Name:	us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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