v3.26.1
Our Portfolio - Additional Information (Details)
 1 Months Ended 3 Months Ended
May 04, 2024
USD ($)
Jul. 01, 2020
committee_member
Dec. 31, 2025
USD ($)
May 31, 2025
USD ($)
Mar. 31, 2026
USD ($)
committee_member
vote
project
director
GW
Mar. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Equity method investments, receivables, real estate and investments         $ 7,600,000,000    
Allowance     $ 62,000,000   67,000,000    
Provision for loss on receivables         5,000,000    
Total assets     8,187,965,000   8,202,362,000    
Loans     3,280,046,000   3,251,630,000    
Equity method investments     4,115,909,000   4,253,780,000    
Receivables              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Allowance     62,000,000   67,000,000 $ 54,000,000 $ 50,000,000
Provision for loss on receivables         5,000,000 $ 4,000,000  
CarbonCount Holdings 1 LLC | Senior Notes Due 2045              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Principal         $ 684,000,000    
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]              
Directors | director         4    
Affirmative director vote | vote         3    
Total assets         $ 2,300,000,000    
Percent of equity securities         72.00%    
Percent of receivables and debt securities         0.28    
Equity method investee              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Loans     629,000,000   $ 550,000,000    
Equity method investments         $ 1,000,000,000.0    
Debt term         10 years    
Equity method investee | Receivables              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Loans         $ 550,000,000    
Maximum | Joint Venture              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Management services         1.00%    
Maximum | Joint Venture | CarbonCount Holdings 1 LLC              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Investment       $ 1,500,000,000      
Minimum | Joint Venture              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Management services         0.50%    
Hannon Armstrong Sustainable Infrastructure Inc. | Joint Venture | CarbonCount Holdings 1 LLC              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Directors | director         2    
KKR Entity | 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         $ 792,000,000    
CarbonCount Holdings 1 LLC | Joint Venture | KKR Entity              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Investment     $ 63,000,000   792,000,000    
CarbonCount Holdings 1 LLC | Maximum | Joint Venture              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Investment $ 1,500,000,000       1,500,000,000    
CarbonCount Holdings 1 LLC | Maximum | Joint Venture | KKR Entity              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Investment $ 1,500,000,000       $ 1,500,000,000    
Jupiter Equity Holdings LLC              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Portfolio of renewable energy projects, power (gigawatts) | GW         2.0    
Capital contribution         $ 562,000,000    
Working capital loan outstanding         77,000,000    
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%          
Equity method investments         $ 500,000,000    
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 | Sponsor              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Review committee | committee_member   2          
Jupiter Equity Holdings LLC | Company              
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         8    
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    
Preferred cash equity interest investment         $ 232,000,000    
Equity method investments         $ 387,000,000    
Daggett Renewable Holdco LLC | Sponsor              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Review committee | committee_member         2    
Daggett Renewable Holdco LLC | Company              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Review committee | committee_member         2    
CarbonCount Holdings 1 LLC              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Ownership percentage         50.00%    
Income elimination, percent         50.00%    
Equity method investments         $ 820,000,000