Quarterly report pursuant to Section 13 or 15(d)

Our Portfolio - Additional Information (Details)

v3.20.2
Our Portfolio - Additional Information (Details)
 3 Months Ended 9 Months Ended
Sep. 30, 2020
USD ($)
Jul. 01, 2020
USD ($)
project
MW
Dec. 31, 2019
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2020
USD ($)
Jun. 30, 2020
USD ($)
Jan. 01, 2020
USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Financing receivables, investments, real estate and equity method investments $ 2,231,000,000     $ 2,231,000,000 $ 2,231,000,000    
Allowance for loss on receivables 31,000,000   $ 8,000,000 31,000,000 31,000,000   $ 26,000,000
Financing receivables on non accrual status 0   0 0 0    
OTTI 0   0        
The partnership              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Portfolio of renewable energy projects, power | MW   2.3          
Capital contribution to partnership   $ 150,000,000          
Project aggregate capacity | MW   663          
Investment, limited partnership, expected total contribution   $ 540,000,000          
Number of projects owned | project   13          
Project, weighted average contract life   13 years          
Distribution percent   49.00%          
Distribution from partnership, upon achievement of certain targets, percent   33.00%          
The partnership | Class A units              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Ownership percent   100.00%          
The partnership | Class B units              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Distribution from partnership, upon achievement of certain targets, percent   67.00%          
The partnership | Operating wind project              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Number of operating wind projects | project   4          
The partnership | Onshore wind projects              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Number of projects owned | project   9          
The partnership | Solar projects              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Number of projects owned | project   4          
Commercial receivables              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Allowance for loss on receivables 31,289,000   25,660,000 31,289,000 31,289,000 $ 28,831,000 26,000,000
Provision for loss on receivables       2,458,000 5,629,000    
3              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Allowance for loss on receivables 8,000,000   8,000,000 8,000,000 8,000,000    
3 | Commercial receivables              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Financing receivables, investments, real estate and equity method investments 0     0 0    
Allowance for loss on receivables $ 8,000,000   $ 8,000,000 $ 8,000,000 $ 8,000,000    
Cumulative effect, period Of adoption, adjustment              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Allowance for loss on receivables             $ 17,000,000