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v3.23.1

Risk Concentrations (Details) | 3 Months Ended
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Mar. 31, 2023
Risks and Uncertainties [Abstract] |
Percentage of wells operated by third-party operating partners | 100.00%

X
- Definition Percentage of Partnership's wells are operated by third-party operating partners. + References No definition available. + Details
Name: | grnt_PercentageOfWellsOperatedByThirdPartyOperatingPartners
Namespace Prefix: | grnt_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RisksAndUncertaintiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration