Document and Entity Information (USD $)	12 Months Ended
	Feb. 28, 2015	Apr. 14, 2015	Aug. 29, 2014
Document and Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Feb. 28, 2015
Entity Registrant Name	AZZ INC
Entity Central Index Key	0000008947
Current Fiscal Year End Date	--02-28
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2015
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		25,765,025
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 1,154,492,795