Annual report pursuant to Section 13 and 15(d)

Long-term Debt - Schedule of Outstanding Non-Recourse Asset-Backed Debt and Bank Loans (Details)

v3.25.0.1
Long-term Debt - Schedule of Outstanding Non-Recourse Asset-Backed Debt and Bank Loans (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Collateral pledged against our non-recourse debt $ 2,895,837 $ 3,073,855
Assets 7,080,245 6,552,350
Non-recourse debt    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Unamortized financing costs (4,000) (2,000)
Total debt 132,000 160,000
Collateral Pledged    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Restricted cash 20,000 11,000
Collateral Pledged | Non-recourse debt    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Assets 307,000 239,000
Asset-Backed Non-recourse Debt | Collateral Pledged | Collateral Pledged    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Assets 307,000 239,000
Asset-Backed Non-recourse Debt | HASI Sustainable Yield Bond 2015-1A | Non-recourse debt    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Principal $ 0 68,000
Interest Rate 4.28%  
Anticipated Balance at Maturity $ 0  
Asset-Backed Non-recourse Debt | HASI Sustainable Yield Bond 2015-1A | Collateral Pledged | Non-recourse debt    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Collateral pledged against our non-recourse debt 0 136,000
Asset-Backed Non-recourse Debt | HASI SYB Trust 2016-2 | Non-recourse debt    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Principal $ 0 51,000
Interest Rate 4.35%  
Anticipated Balance at Maturity $ 0  
Asset-Backed Non-recourse Debt | HASI SYB Trust 2016-2 | Collateral Pledged | Non-recourse debt    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Collateral pledged against our non-recourse debt 0 57,000
Asset-Backed Non-recourse Debt | Lannie Mae Series 2019-1 | Non-recourse debt    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Principal $ 96,000 0
Interest Rate 6.78%  
Anticipated Balance at Maturity $ 0  
Asset-Backed Non-recourse Debt | Lannie Mae Series 2019-1 | Collateral Pledged | Non-recourse debt    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Collateral pledged against our non-recourse debt 266,000 0
Other Non-recourse Debt | Non-recourse debt    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Other non-recourse debt 40,000 43,000
Anticipated Balance at Maturity 17,000  
Other Non-recourse Debt | Collateral Pledged | Non-recourse debt    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Collateral pledged against our non-recourse debt $ 41,000 $ 46,000
Other Non-recourse Debt | Minimum | Non-recourse debt    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Interest Rate 3.15%  
Other Non-recourse Debt | Maximum | Non-recourse debt    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Interest Rate 7.23%