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GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION - Narrative (Details) - USD ($)	Jun. 30, 2019	Feb. 28, 2019	Dec. 31, 2018	Dec. 20, 2018	Sep. 30, 2018	Mar. 31, 2015	Mar. 19, 2015
Financial Information
Debt issued	$ 500,000,000
Debt outstanding	491,651,000				$ 493,968,000
HPIDC 2025 Notes
Financial Information
Debt issued							$ 500,000,000
Debt outstanding	$ 491,651,000		$ 12,900,000	$ 12,900,000	$ 493,968,000
Company 2025 Notes
Financial Information
Debt issued			$ 487,100,000	$ 487,100,000
Notes exchanged		$ 487,000,000.0
Helmerich & Payne International Drilling Co. (Issuer) | HPIDC 2025 Notes
Financial Information
Debt issued						$ 500,000,000

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