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

Quarterly report pursuant to Section 13 or 15(d)

Earnings per Share of Common Stock - Additional Information (Detail)

Earnings per Share of Common Stock - Additional Information (Detail)	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013
Earnings Per Share [Abstract]
Weighted average number of OP units held by the non-controlling interest	462,375	461,180
Unvested shares of restricted common stock		734,763

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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