Document and Entity Information	3 Months Ended
	May 31, 2018 shares
Document and Entity Information [Abstract]
Entity Registrant Name	AZZ INC
Entity Central Index Key	0000008947
Document Type	10-Q
Document Period End Date	May 31, 2018
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--02-28
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	26,026,507