v3.26.1
Cover - USD ($)
12 Months Ended
Apr. 30, 2024
Aug. 06, 2024
Oct. 31, 2023
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Apr. 30, 2024    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2024    
Current Fiscal Year End Date --04-30    
Entity File Number 000-55281    
Entity Registrant Name Black Rock Petroleum Co    
Entity Central Index Key 0001580095    
Entity Tax Identification Number 46-2675498    
Entity Incorporation, State or Country Code NV    
Entity Address, Address Line One 108- 2559 Parkview Lane    
Entity Address, Address Line Two Por Coquitlam    
Entity Address, City or Town BC    
Entity Address, Country CA    
Entity Address, Postal Zip Code V3C 6M1    
City Area Code 778    
Local Phone Number 814-7729    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers Yes    
Entity Current Reporting Status Yes    
Entity Interactive Data Current No    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 0
Entity Common Stock, Shares Outstanding   200,000,000  
Document Financial Statement Error Correction [Flag] false    
Auditor Name GreenGrowth CPAs    
Auditor Location Los Angeles, California    
Auditor Firm ID 6580