Document and Entity Information - USD ($)
$ in Millions
12 Months Ended
Nov. 30, 2017
Jan. 31, 2018
May 31, 2017
Document And Entity Information [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Nov. 30, 2017    
Document Fiscal Year Focus 2017    
Document Fiscal Period Focus FY    
Trading Symbol CAFD    
Entity Registrant Name 8POINT3 ENERGY PARTNERS LP    
Entity Central Index Key 0001635581    
Current Fiscal Year End Date --11-30    
Entity Well-known Seasoned Issuer No    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Accelerated Filer    
Entity Common Stock Shares Outstanding   28,088,673  
Entity Public Float     $ 382.0