XML 24 R55.htm IDEA: XBRL DOCUMENT v3.2.0.727
Commitments and Contingencies (Brazilian Customs) - Additional Information (Detail)
BRL in Millions, $ in Millions
 1 Months Ended 3 Months Ended
Apr. 30, 2011
BRL
Vessel
Jun. 30, 2015
USD ($)
Jun. 30, 2015
BRL
Commitments and Contingencies Disclosure [Line Items]      
Fines assessed BRL 155 $ 50  
Number of Tidewater vessels that the subsidiaries failed to obtain import licenses from 17    
Disallowed amount of total fines by the administrative appeals board   48 BRL 149
Remaining amount of fines contested   9 28
Decision disallowing the fines totaling | BRL     127
Revised      
Commitments and Contingencies Disclosure [Line Items]      
Fines assessed   $ 41 BRL 127