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Subsequent Events - Additional Information (Detail) - Subsequent Event [Member]
shares in Thousands
Feb. 26, 2016
shares
Feb. 18, 2016
VEB / $
Feb. 17, 2016
VEF / $
Jan. 29, 2016
USD ($)
Subsequent Event [Line Items]        
Percentage added to the average of the highest price on each of the five trading days prior to the date of acquisition, to determine maximum price       10.00%
Percentage deducted to the average of the lowest price on each of the five trading days prior to the date of acquisition, to determine minimum price       10.00%
Common shares repurchased | shares 800      
Bolivar fuerte re-measurement exchange rate   202.9 13.5  
Maximum [Member]        
Subsequent Event [Line Items]        
Common shares to be repurchased, amount | $       $ 300,000,000
Bolivar fuerte re-measurement exchange rate     10  
Minimum [Member]        
Subsequent Event [Line Items]        
Bolivar fuerte re-measurement exchange rate     6.3