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Subsequent Events (Notes)	6 Months Ended
Subsequent Events (Notes)	Aug. 31, 2017
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On September 6, 2017, we completed the acquisition of all the assets and outsanding shares of Powergrid Solutions, Inc. ("PSI"), a privately held company, based in Oshkosh, Wisconsin. PSI designs, engineers and manufactures customized low and medium-voltage power quality, power generation and distribution equipment. PSI’s product portfolio includes metal-enclosed, metal-clad and padmount switchgear, serving the utility, commercial, industrial and renewable energy markets since 1982. The acquisition of PSI is a key addition to our electrical switchgear portfolio. The addition of PSI’s low-voltage and padmount switchgear allows AZZ to offer a comprehensive portfolio of customized switchgear solutions to both existing and new customers in a diverse set of industries.