v3.25.2
Our Portfolio - Additional Information (Details)
 1 Months Ended 3 Months Ended 6 Months Ended
May 08, 2025
May 04, 2024
USD ($)
director
vote
Jul. 01, 2020
committee_member
May 31, 2025
USD ($)
Apr. 30, 2025
Jun. 30, 2025
USD ($)
committee_member
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
committee_member
project
GW
Jun. 30, 2024
USD ($)
Mar. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Mar. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Equity method investments, receivables, real estate and investments           $ 7,168,000,000   $ 7,168,000,000          
Allowance on receivables           55,000,000   55,000,000     $ 50,000,000    
Total assets           7,596,166,000   7,596,166,000     7,080,245,000    
Loans           3,025,993,000   3,025,993,000     2,895,837,000    
Carrying Value           4,082,998,000   4,082,998,000     3,612,394,000    
CarbonCount Holdings 1 LLC | Senior Notes Due 2045                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Principal           200,000,000   200,000,000          
Debt Instrument, Maximum Amount Agreed To Issue           592,000,000              
Joint Venture                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Services agreement   1.00%                      
Joint Venture | CarbonCount Holdings 1 LLC                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Investment period 30 months     30 months 18 months                
Directors | director   4                      
Affirmative director vote | vote   3                      
Total assets           $ 1,100,000,000   $ 1,100,000,000          
Receivables (in percent)           0.79   0.79          
Joint Venture | Minimum                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Management services   0.50%                      
Joint Venture | Maximum                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Management services   1.00%                      
Joint Venture | Maximum | CarbonCount Holdings 1 LLC                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Investment       $ 1,000,000,000                  
Equity method investee                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Carrying Value           $ 1,200,000,000   $ 1,200,000,000          
Debt term               10 years          
Hannon Armstrong Sustainable Infrastructure Inc. | Joint Venture | CarbonCount Holdings 1 LLC                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Directors | director   2                      
CarbonCount Holdings 1 LLC | Joint Venture                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Investment   $ 524,000,000                      
CarbonCount Holdings 1 LLC | Joint Venture | KKR Entity                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Investment   524,000,000                      
CarbonCount Holdings 1 LLC | Joint Venture | Maximum                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Investment   1,000,000,000                      
CarbonCount Holdings 1 LLC | Joint Venture | Maximum | KKR Entity                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Investment   $ 1,000,000,000                      
KKR Entity | Joint Venture | CarbonCount Holdings 1 LLC                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Directors | director   2                      
Jupiter Equity Holdings LLC                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Portfolio of renewable energy projects, power (gigawatts) | GW               2.3          
Capital contribution           562,000,000   $ 562,000,000          
Working capital loan           96,000,000   96,000,000          
Distribution percent (as a percent)     49.00%                    
Review committee | committee_member     4                    
Distribution from partnership, upon achievement of certain targets (as a percent)     33.00%                    
Carrying Value           $ 627,000,000   $ 627,000,000          
Jupiter Equity Holdings LLC | Sponsor                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Distribution from partnership, upon achievement of certain targets (as a percent)     67.00%                    
Jupiter Equity Holdings LLC | Company                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Review committee | committee_member     2                    
Jupiter Equity Holdings LLC | Sponsor                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Review committee | committee_member     2                    
Jupiter Equity Holdings LLC | Jupiter Equity Holdings LLC | Class A units                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Ownership percent (as a percent)     100.00%                    
Jupiter Equity Holdings LLC | Onshore wind projects                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Projects owned | project               9          
Jupiter Equity Holdings LLC | Solar projects                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Projects owned | project               4          
Daggett Renewable Holdco LLC                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Projects owned | project               2          
Review committee | committee_member           4   4          
Preferred cash equity interest investment           $ 232,000,000   $ 232,000,000          
Carrying Value           $ 439,000,000   $ 439,000,000          
Daggett Renewable Holdco LLC | Company                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Review committee | committee_member           2   2          
Daggett Renewable Holdco LLC | Sponsor                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Review committee | committee_member           2   2          
The Lighthouse Partnerships                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Projects owned | project               3          
Working capital loan           $ 15,000,000   $ 15,000,000          
Review committee | committee_member           4   4          
Preferred cash equity interest investment           $ 420,000,000   $ 420,000,000          
The Lighthouse Partnerships | Company                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Review committee | committee_member           2   2          
The Lighthouse Partnerships | Sponsor                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Review committee | committee_member           2   2          
Receivables                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Allowance on receivables           $ 55,000,000 $ 48,000,000 $ 55,000,000 $ 48,000,000 $ 54,000,000 $ 50,000,000 $ 52,000,000 $ 50,000,000
Decrease in reserve           1,000,000 $ (4,000,000) 5,000,000 $ (2,000,000)        
Receivables | Equity method investee                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Loans           826,000,000   826,000,000          
Receivables | Performance Rating 3                          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                          
Equity method investments, receivables, real estate and investments           0   0          
Allowance on receivables           0   0          
Decrease in reserve           1,000,000              
Loans           0   0          
Carrying Value           $ 0   $ 0