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Contingencies - Additional Information (Detail) BRL in Millions, $ in Millions	1 Months Ended		3 Months Ended
	Nov. 22, 2011 USD ($)	Nov. 22, 2011 BRL	Mar. 31, 2016 BRL	May. 31, 2012 USD ($)
Loss Contingencies [Line Items]
Damages asserted by BK | BRL			BRL 20.8
Business combination, recognized identifiable assets acquired and liabilities assumed, contingent liability				$ 2.9
Court-Imposed Interest, Fees or Inflation Adjustments
Loss Contingencies [Line Items]
Total ordered damages granted to Bk	$ 7.4
Court-Imposed Interest, Fees or Inflation Adjustments | Maximum
Loss Contingencies [Line Items]
Damages asserted by BK	$ 52.0
Total ordered damages granted to Bk | BRL		BRL 26.7

X

- Definition

The amount of liability arising from an inherited contingency (as defined) which has been recognized as of the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
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- Definition

Amount of damages awarded to the plaintiff in the legal matter.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
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-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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- Definition

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

+ References

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