v3.7.0.1
Document and Entity Information - shares
3 Months Ended
Mar. 31, 2017
May 31, 2017
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-Q  
Document Period End Date Mar. 31, 2017  
Document Fiscal Year Focus 2017  
Document Fiscal Period Focus Q1  
Amendment Flag false  
Common Class A    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   112,952,170
Common Class B    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   61,343,054
Common Class B1    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   0