v3.26.1
Document And Entity Information - shares
 6 Months Ended
Jun. 30, 2026
Aug. 13, 2026
Document Information [Line Items]    
Entity Central Index Key 0001779523  
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Fiscal Year Focus 2026  
Document Transition Report false  
Securities Act File Number 814-01314  
Entity Registrant Name Muzinich BDC, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 84-2200473  
Entity Address, Address Line One 450 Park Avenue  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10022  
City Area Code (212)  
Local Phone Number 888-3413  
Title of 12(g) Security Common Stock, par value $0.001 per share  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   169,101
Amendment Flag false  
Document Fiscal Period Focus Q2  
Current Fiscal Year End Date --12-31