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Subsequent Events (Notes)	6 Months Ended
Subsequent Events (Notes)	Aug. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On October 3, 2016, AZZ entered into an agreement to divest its indirectly held subsidiary, Nuclear Logistics LLC (“NL”) to Westinghouse Electric Company, LLC (“Westinghouse”) in exchange for cash. Terms of the transaction were not disclosed, and are subject to customary terms and conditions. The transaction is expected to close in the fall of 2016. Management has determined a potential loss is reasonably possible however, due to the timing until closing and various other factors included in the contract, management does not believe that the amount of such possible loss or a range of potential loss is reasonably estimable.