Schedule of intangible assets.

No definition available.

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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275

+ Details

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- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination.

+ References

No definition available.

+ Details

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- Definition

Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275

+ Details

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- Definition

Amount of increase in assets, excluding financial assets and goodwill, lacking physical substance with an indefinite life, resulting from a business combination.

+ References

No definition available.

+ Details

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- Details

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Intangible Assets - Additional Information (Detail) - USD ($)				1 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013	Oct. 31, 2015	Mar. 31, 2015
Schedule Of Intangible Assets [Line Items]
Impairment of intangible assets	$ 0	$ 0	$ 0
BlackRock Kelso Capital Advisors LLC [Member]
Schedule Of Intangible Assets [Line Items]
Acquired indefinite-lived management contracts					$ 120,000,000
Infraestructura Institucional [Member]
Schedule Of Intangible Assets [Line Items]
Acquired finite-lived management contracts				$ 36,000,000
Weighted-average estimated useful life of finite-lived management contracts				6 years