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Commitments and Contingencies (Brazilian Customs) - Additional Information (Detail) In Millions, unless otherwise specified | 1 Months Ended | 3 Months Ended
--- | --- | ---
Apr. 30, 2011 BRL Vessel | Jun. 30, 2014 USD ($) | Jun. 30, 2014 BRL | Jun. 30, 2014 Revised USD ($) | Jun. 30, 2014 Revised BRL
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |
Fines assessed | 155.0 | $ 70.3 |  | $ 57.6 | 127.0
Number of Tidewater vessels that the subsidiaries failed to obtain import licenses from | 17 |  |  |  |
Disallowed amount of total fines by the administrative appeals board |  | 67.6 | 149.0 |  |
Remaining amount of fines contested |  | 12.7 | 28.0 |  |
Decision disallowing the fines totaling |  |  | 127.0 |  |

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- Details
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