Hannon Armstrong Sustainable Infrastructure Capital, Inc. Quarterly report pursuant to Section 13 or 15(d)

Securitization of Financial Assets - Schedule Of Allowance For Loss On Securitization Residual Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Beginning balance			$ 0
Provision for loss on securitization assets	$ 9,792	$ (2,463)	12,481	$ 6,222
Ending balance	3,000		3,000
Securitization trust \| Government receivables
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Beginning balance	0	0	0	0
Provision for loss on securitization assets	0	0	0	0
Ending balance	0	0	0	0
Securitization trust \| Commercial receivables
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Beginning balance	0	0	0	0
Provision for loss on securitization assets	3,000	0	3,000	0
Ending balance	$ 3,000	$ 0	$ 3,000	$ 0