Document And Entity Information - USD ($)	12 Months Ended
	Feb. 25, 2017	Mar. 25, 2017	Aug. 27, 2016
Document Information [Line Items]
Entity Registrant Name	BED BATH & BEYOND INC
Entity Central Index Key	0000886158
Trading Symbol	bbby
Current Fiscal Year End Date	--02-25
Entity Filer Category	Large Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	Yes
Entity Common Stock, Shares Outstanding (in shares)		145,153,735
Entity Public Float			$ 6,598,435,409
Document Type	10-K
Document Period End Date	Feb. 25, 2017
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY
Amendment Flag	false