BACKGROUND ORGANIZATION AND BASIS OF PRESENTATION (Details)	12 Months Ended
	Apr. 30, 2022
MMEX Resources Corporation [Member]
State of Incorporation	Nevada
Entity Legal Form	Corporation
Relationship	Parent
Ownership Percentage	0.00%
Pecos Refining & Transport, LLC [Member]
State of Incorporation	Texas
Entity Legal Form	LLC
Relationship	Subsidiary
Ownership Percentage	100.00%
Hydrogen Global, LLC [Member]
State of Incorporation	Texas
Entity Legal Form	LLC
Relationship	Subsidiary
Ownership Percentage	100.00%
MMEX Solar Resources LLC [Member]
State of Incorporation	Texas
Entity Legal Form	LLC
Relationship	Subsidiary
Ownership Percentage	100.00%
Hydrogen Ultra, LLC [Member]
State of Incorporation	Texas
Entity Legal Form	LLC
Relationship	Subsidiary
Ownership Percentage	100.00%
Louisiana Gulf Refining & Trading LLC [Member]
State of Incorporation	Louisiana
Entity Legal Form	LLC
Ownership Percentage	100.00%
Relationship	Subsidiary
Rolling Stock Marine LLC [Member]
State of Incorporation	Texas
Entity Legal Form	LLC
Relationship	Subsidiary
Ownership Percentage	100.00%