Annual report pursuant to Section 13 and 15(d)

Organization - Additional Information (Details)

v3.19.3.a.u2
Organization - Additional Information (Details)
12 Months Ended
Dec. 31, 2019
investment_fund
Operating Leased Assets [Line Items]  
Number of types of investment funds used by the company 3
Minimum  
Operating Leased Assets [Line Items]  
Power purchase or lease agreement term 20 years
Maximum  
Operating Leased Assets [Line Items]  
Power purchase or lease agreement term 25 years