v3.26.3
Document and Entity Information - shares
 9 Months Ended
Sep. 30, 2026
Nov. 12, 2026
Document Information [Line Items]    
Document Type 10-Q  
Entity File Number 000-56834  
Entity Tax Identification Number 41-3394824  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2026  
Document Transition Report false  
Entity Registrant Name Monroe Capital Asset-Backed Finance Company, LP  
Entity Incorporation, State or Country Code DE  
Entity Address, Address Line One 155 North Wacker Drive, 35th Floor  
Entity Address, City or Town Chicago  
Entity Address State Or Province IL  
Entity Address, Postal Zip Code 60606  
City Area Code 312  
Local Phone Number 258‑8300  
Entity Current Reporting Status No  
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 Central Index Key 0002125316  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q3  
Amendment Flag false  
Class E shares    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   600
Class S Shares    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   110
Class I Shares    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   110