v3.7.0.1
Document and Entity Information - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
May 31, 2017
Jun. 30, 2016
Document Information [Line Items]      
Entity Registrant Name TerraForm Global, Inc.    
Entity Central Index Key 0001620702    
Current Fiscal Year End Date --12-31    
Entity Filer Category Accelerated Filer    
Document Type 10-K    
Document Period End Date Dec. 31, 2016    
Document Fiscal Year Focus 2016    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status No    
Entity Public Float     $ 368.0
Class A Common Stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   112,952,170  
Class B Common Stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   61,343,054  
Class B1 Common stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   0