Document and Entity Information - USD ($)	12 Months Ended
	Mar. 02, 2019	Apr. 24, 2019	Sep. 01, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	APOGEE ENTERPRISES, INC.
Trading Symbol	APOG
Entity Central Index Key	0000006845
Document Type	10-K
Document Period End Date	Mar. 02, 2019
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--03-02
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		26,599,456
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 1,391,000,000
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false