Quarterly report pursuant to Section 13 or 15(d)

IMPAIRMENT OF INVESTMENT IN BOA VISTA SERVICOS (Detail)

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IMPAIRMENT OF INVESTMENT IN BOA VISTA SERVICOS (Detail)
BRL in Millions, $ in Millions
Mar. 31, 2016
BRL
Mar. 31, 2016
USD ($)
Dec. 31, 2015
BRL
Schedule of Cost-method Investments [Line Items]      
Investment in Boa Vista Servicos S.A. (BVS) | BRL BRL 44   BRL 44
Cumulative Translation Adjustment   $ 38.2  
Boa Vista Servicos Sociedad Anonima      
Schedule of Cost-method Investments [Line Items]      
Investment in Boa Vista Servicos S.A. (BVS)   $ 12.3  
Boa Vista Servicos Sociedad Anonima      
Schedule of Cost-method Investments [Line Items]      
Business acquisition, percentage of voting interests acquired 15.00% 15.00%