Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
12 Months Ended
Mar. 31, 2017
Jun. 29, 2017
Sep. 30, 2016
Document And Entity Information      
Entity Registrant Name BMB MUNAI INC    
Entity Central Index Key 0000924805    
Document Type 10-K    
Document Period End Date Mar. 31, 2017    
Amendment Flag false    
Current Fiscal Year End Date --03-31    
Is Entity a Well-known Seasoned Issuer? No    
Is Entity a Voluntary Filer? No    
Is Entity's Reporting Status Current? Yes    
Entity Filer Category Smaller Reporting Company    
Entity Public Float     $ 228,339
Entity Common Stock, Shares Outstanding   490,000,000  
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2017