v3.26.1
Long-term Debt - Schedule of Outstanding Non-Recourse Asset-Backed Debt and Bank Loans (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Loans $ 3,145,473 $ 3,280,046
Assets 8,940,993 8,187,965
Collateral Pledged    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Restricted cash 31,000 35,000
Non-recourse debt    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Unamortized financing costs (3,000) (3,000)
Carrying Value 120,000 125,000
Non-recourse debt | Collateral pledged    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Assets 302,000 311,000
Asset-backed non-recourse debt | Collateral pledged | Collateral Pledged    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Assets 302,000 311,000
Other non-recourse debt | Non-recourse debt    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Other non-recourse debt 33,000 35,000
Anticipated Balance at Maturity $ 0  
Other non-recourse debt | Non-recourse debt | Minimum    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Stated Interest Rate 3.15%  
Other non-recourse debt | Non-recourse debt | Maximum    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Stated Interest Rate 7.23%  
Other non-recourse debt | Non-recourse debt | Collateral pledged    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Loans $ 35,000 37,000
HASI Harmony Issuer | Asset-backed non-recourse debt | Non-recourse debt    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Outstanding principal balance $ 90,000 93,000
Stated Interest Rate 6.78%  
Anticipated Balance at Maturity $ 0  
HASI Harmony Issuer | Asset-backed non-recourse debt | Non-recourse debt | Collateral pledged    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Loans $ 267,000 $ 274,000