Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2018	Nov. 08, 2018	Mar. 29, 2018
Document and Entity Information
Entity Registrant Name	Helmerich & Payne, Inc.
Entity Central Index Key	0000046765
Document Type	10-K
Document Period End Date	Sep. 30, 2018
Amendment Flag	false
Current Fiscal Year End Date	--09-30
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 7,250
Entity Common Stock, Shares Outstanding		109,038,462
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY