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

Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Equity - Additional Information (Detail)

v3.5.0.2

Equity - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
Equity - Additional Information (Detail) - USD ($)	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount of potential offer and sale of securities			$ 13,914,000	$ 10,794,000
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount of potential offer and sale of securities			$ 500,000,000
Restricted Common Stock [Member] \| 2013 Plan [Member] \| Employees and Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded			361,503
Restricted common shares vesting years			Vest in 2016 to 2019
Restricted Common Stock [Member] \| 2013 Plan [Member] \| Certain Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded			291,000
Restricted Incentive [Member] \| 2013 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense	$ 3,000,000	$ 3,000,000	$ 5,000,000	$ 5,000,000
Unrecognized compensation expense	15,000,000		$ 15,000,000
Weighted-average term in which unrecognized compensation expense is expected to be recognized			2 years
Assumed forfeiture rate for calculation of equity-based compensation expense			5.00%
Restricted Incentive [Member] \| 2013 Plan [Member] \| Maximum [Member] \| Accounting Standards Update 2016-09 [Member] \| Retained Earnings [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Adjustment to retained earnings for the equity based compensation expense	$ 1,000,000		$ 1,000,000

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