Note 5 - Investment Securities (Details Textual) - USD ($)	Aug. 27, 2016	Feb. 27, 2016
Auction Rate Securities [Member]
Available-for-sale Securities, Long-term Investments, Amortized Cost	$ 20,300,000	$ 20,300,000
Available-for-sale Securities Temporary Impairment Adjustment Accumulated Other Comprehensive Income (Loss)	700,000	500,000
US Treasury Securities [Member]
Held-to-maturity Securities, Current	0	86,200,000
Other Trading Investment Securities [Member]
Deferred Compensation Plan Assets	63,100,000	51,500,000
Deferred Compensation Plan Assets	$ 63,100,000	$ 51,500,000

This element represents the temporary valuation adjustment related to available-for-sale investment securities which is recorded in accumulated other comprehensive (loss) income.

No definition available.

+ Details

Name:	bbby_AvailableForSaleSecuritiesTemporaryImpairmentAdjustmentAccumulatedOtherComprehensiveIncomeLoss
Namespace Prefix:	bbby_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amortized cost of long-term investments in debt and equity securities and other forms of securities that provide ownership interests classified as available-for-sale.

+ References

No definition available.

+ Details

Name:	bbby_AvailableforsaleSecuritiesLongTermInvestmentsAmortizedCost
Namespace Prefix:	bbby_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying amount as of the balance sheet date of assets held under deferred compensation agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DeferredCompensationPlanAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity, expected to be converted to cash, sold or exchanged within one year or the normal operating cycle.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26626-111562

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558

+ Details

Name:	us-gaap_HeldToMaturitySecuritiesCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_AuctionRateSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=bbby_OtherTradingInvestmentSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: