Quarterly report pursuant to Section 13 or 15(d)

Pass-through Financing Obligations (Details)

v3.20.2
Pass-through Financing Obligations (Details) - USD ($)
$ in Millions
Sep. 30, 2020
Dec. 31, 2019
Property Subject to or Available for Operating Lease [Line Items]    
Customer agreement, initial term 22 years  
Minimum    
Property Subject to or Available for Operating Lease [Line Items]    
Customer agreement, initial term 20 years  
Maximum    
Property Subject to or Available for Operating Lease [Line Items]    
Customer agreement, initial term 25 years  
Solar energy systems, net    
Property Subject to or Available for Operating Lease [Line Items]    
Solar energy systems $ 656.3 $ 657.9
Accumulated depreciation $ 113.6 $ 95.9
Solar energy systems, net | Minimum    
Property Subject to or Available for Operating Lease [Line Items]    
Solar energy systems, initial term 20 years  
Solar energy systems, net | Maximum    
Property Subject to or Available for Operating Lease [Line Items]    
Solar energy systems, initial term 22 years