v3.26.3
Cover
3 Months Ended
Aug. 31, 2026
$ / shares
shares
Cover [Abstract]  
Document Type 10-Q
Amendment Flag false
Document Quarterly Report true
Document Transition Report false
Document Period End Date Aug. 31, 2026
Document Fiscal Period Focus Q1
Document Fiscal Year Focus 2027
Current Fiscal Year End Date --05-31
Entity File Number 333-281852
Entity Registrant Name ROCKY MOUNTAINS GROUP LTD
Entity Central Index Key 0002034288
Entity Tax Identification Number 93-2609396
Entity Incorporation, State or Country Code NV
Entity Address, Address Line One E 242 Bucklands Beach Road
Entity Address, Address Line Two Bucklands Beach
Entity Address, City or Town Auckland
Entity Address, Country NZ
Entity Address, Postal Zip Code 2012
City Area Code +86
Local Phone Number 18217730216
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false
Entity Shell Company false
Entity Common Stock, Shares Outstanding | shares 23,200,000
Entity Listing, Par Value Per Share | $ / shares $ 0.0001