HA Sustainable Infrastructure Capital, Inc. Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Additional Information (Details) - Level 3	Dec. 31, 2022	Dec. 31, 2021
Risk free interest rate \| Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Investments, measurement input	0.01	0.01
Risk free interest rate \| Minimum \| Securitization residual assets
Fair Value, Option, Quantitative Disclosures [Line Items]
Investments, measurement input	0.01	0.01
Risk free interest rate \| Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Investments, measurement input	0.04	0.04
Risk free interest rate \| Maximum \| Securitization residual assets
Fair Value, Option, Quantitative Disclosures [Line Items]
Investments, measurement input	0.06	0.06
Discount rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Investments, measurement input	0.065	0.036
Discount rate \| Securitization residual assets
Fair Value, Option, Quantitative Disclosures [Line Items]
Investments, measurement input	0.068	0.038