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

Our Portfolio - Summary of Anticipated Maturity Dates of Financing Receivables and Investments and Weighted Average Yield (Detail)

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Our Portfolio - Summary of Anticipated Maturity Dates of Financing Receivables and Investments and Weighted Average Yield (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($)
Receivables [Abstract]
Financing Receivables, payment due total	$ 784
Financing Receivables, payment due in less than 1 year	0
Financing Receivables, payment due in 1-5 years	122
Financing Receivables, payment due in 5-10 years	52
Financing Receivables, payment due in more than 10 years	$ 610
Financing Receivables, weighted average yield total	5.00%
Financing Receivables, weighted average yield in less than 1 year	0.00%
Financing Receivables, weighted average yield in 1-5 years	6.00%
Financing Receivables, weighted average yield in 5-10 years	5.00%
Financing Receivables, weighted average yield in more than 10 years	5.00%
Investments, payment due total	$ 29
Investments, payment due in less than 1 year	13
Investments, payment due in 1-5 years	0
Investments, payment due in 5-10 years	1
Investments, payment due in more than 10 years	$ 15
Investments, weighted average yield total	5.00%
Investments, weighted average yield in less than 1 year	6.00%
Investments, weighted average yield in 1-5 years	0.00%
Investments, weighted average yield in 5-10 years	5.00%
Investments, weighted average yield in more than 10 years	4.00%

- Definition

Financing Receivable Due Five To Ten Years

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- Definition

Financing Receivable Due Less Than One Year

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- Definition

Financing Receivable Due More Than Ten Years

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- Definition

Financing Receivable Due One To Five Years

+ References

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- Definition

Financing Receivables

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- Definition

Financing receivables weighted average yield.

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- Definition

Financing receivables weighted average yield due five to ten years.

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- Definition

Financing receivables weighted average yield due less than one year.

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- Definition

Financing receivables weighted average yield due more than ten years.

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- Definition

Financing receivables weighted average yield due one to five years.

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- Definition

Investments Due Five To Ten Years

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- Definition

Investments Due Less Than One Year

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- Definition

Investments Due More Than Ten Years

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- Definition

Investments Due One To Five Years

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- Definition

Investments weighted average yield.

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- Definition

Investments Weighted Average Yield Due Five To Ten Years

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- Definition

Investments weighted average yield due less than one year.

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- Definition

Investments weighted average yield due more than ten years.

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- Definition

Investments Weighted Average Yield Due One To Five Years

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- Definition

Sum of the carrying amounts as of the balance sheet date of all investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(h))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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