Document and Entity Information	6 Months Ended
	Aug. 31, 2017 shares
Document and Entity Information [Abstract]
Entity Registrant Name	AZZ INC
Entity Central Index Key	0000008947
Document Type	10-Q
Document Period End Date	Aug. 31, 2017
Amendment Flag	false
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--02-28
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding	25,961,323