Cover Page - shares	3 Months Ended
	Dec. 31, 2020	Feb. 03, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Dec. 31, 2020
Current Fiscal Year End Date	--09-30
Document Transition Report	false
Entity File Number	1-4221
Entity Registrant Name	HELMERICH & PAYNE, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	73-0679879
Entity Address, Address Line One	1437 South Boulder Avenue, Suite 1400
Entity Address, City or Town	Tulsa
Entity Address, State or Province	OK
Entity Address, Postal Zip Code	74119
City Area Code	918
Local Phone Number	742-5531
Title of 12(b) Security	Common Stock ($0.10 par value)
Trading Symbol	HP
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		107,854,570
Document Fiscal Period Focus	Q1
Amendment Flag	false
Document Fiscal Year Focus	2021
Entity Central Index Key	0000046765