v3.25.2
N-2 - $ / shares
shares in Billions
Sep. 29, 2025
Aug. 31, 2025
Cover [Abstract]    
Entity Central Index Key 0001987221  
Amendment Flag false  
Securities Act File Number 814-01669  
Document Type 8-K  
Entity Registrant Name AMG Comvest Senior Lending Fund  
Entity Address, Address Line One 360 S. Rosemary Avenue  
Entity Address, Address Line Two Suite 1700  
Entity Address, City or Town West Palm Beach  
Entity Address, State or Province FL  
Entity Address, Postal Zip Code 33401  
City Area Code 561  
Local Phone Number 727-2001  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Capital Stock, Long-Term Debt, and Other Securities [Abstract]    
Outstanding Security, Held [Shares]   2.0
Class I Common Shares [Member]    
General Description of Registrant [Abstract]    
NAV Per Share   $ 25.31
Capital Stock, Long-Term Debt, and Other Securities [Abstract]    
Outstanding Security, Title [Text Block]   Class I Common Shares
Class S Common Shares [Member]    
General Description of Registrant [Abstract]    
NAV Per Share   $ 0
Capital Stock, Long-Term Debt, and Other Securities [Abstract]    
Outstanding Security, Title [Text Block]   Class S Common Shares
Class D Common Shares [Member]    
General Description of Registrant [Abstract]    
NAV Per Share   $ 0
Capital Stock, Long-Term Debt, and Other Securities [Abstract]    
Outstanding Security, Title [Text Block]   Class D Common Shares
Class F Common Shares [Member]    
General Description of Registrant [Abstract]    
NAV Per Share   $ 0
Capital Stock, Long-Term Debt, and Other Securities [Abstract]    
Outstanding Security, Title [Text Block]   Class F Common Shares