| Cover | Jan. 03, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jan. 3, 2020 |
| Entity File Number | 1-4221 |
| Entity Registrant Name | HELMERICH & PAYNE, INC. |
| Entity Central Index Key | 0000046765 |
| Entity Tax Identification Number | 73-0679879 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 1437 South Boulder Avenue |
| Entity Address, Address Line Two | 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock ($0.10 par value) |
| Trading Symbol | HP |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
