Debt Instrument, Basis Spread on Federal Funds Rate

No definition available.

Name:	bby_DebtInstrumentBasisSpreadOnFederalFundsRate
Namespace Prefix:	bby_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Basis Spread on Libor

+ References

No definition available.

+ Details

Name:	bby_DebtInstrumentBasisSpreadOnLibor
Namespace Prefix:	bby_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The maximum percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	bby_DebtInstrumentBasisSpreadOnVariableRateHighEndOfRange
Namespace Prefix:	bby_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The minimum percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	bby_DebtInstrumentBasisSpreadOnVariableRateLowEndOfRange
Namespace Prefix:	bby_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Higher Range on Annual Base Rate

+ References

No definition available.

+ Details

Name:	bby_DebtInstrumentHigherRangeOnAnnualBaseRate
Namespace Prefix:	bby_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Higher Range on Facility Fee

+ References

No definition available.

+ Details

Name:	bby_DebtInstrumentHigherRangeOnFacilityFee
Namespace Prefix:	bby_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Lower Range on Annual Base Rate

+ References

No definition available.

+ Details

Name:	bby_DebtInstrumentLowerRangeOnAnnualBaseRate
Namespace Prefix:	bby_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Lower Range on Facility Fee

+ References

No definition available.

+ Details

Name:	bby_DebtInstrumentLowerRangeOnFacilityFee
Namespace Prefix:	bby_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the price at which debt instrument may be redeemed, as a percentage of principal amount of debt instrument.

+ References

No definition available.

+ Details

Name:	bby_DebtInstrumentRedemptionPriceAsPercentageOfPrincipalAmount
Namespace Prefix:	bby_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Treasury Rate Basis Points for Redemption

+ References

No definition available.

+ Details

Name:	bby_DebtInstrumentTreasuryRateBasisPointsforRedemption
Namespace Prefix:	bby_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

This element represents the underwriting discount on the issuance of debt.

+ References

No definition available.

+ Details

Name:	bby_UnderwritingDiscountOnIssuanceOfDebt
Namespace Prefix:	bby_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ 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 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 7

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20, 22

-Article 5

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermDebtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

+ References

No definition available.

+ Details

Name:	us-gaap_ProceedsFromDebtNetOfIssuanceCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Debt (Details 3) (USD $) In Millions, unless otherwise specified								1 Months Ended
	Nov. 02, 2013	Feb. 02, 2013	Nov. 03, 2012	Nov. 02, 2013 2013 Notes [Member]	Jul. 15, 2013 2013 Notes [Member]	Feb. 02, 2013 2013 Notes [Member]	Nov. 03, 2012 2013 Notes [Member]	Jul. 31, 2013 2018 Notes [Member]	Nov. 02, 2013 2018 Notes [Member]	Jul. 16, 2013 2018 Notes [Member]	Feb. 02, 2013 2018 Notes [Member]	Nov. 03, 2012 2018 Notes [Member]	Jun. 25, 2013 New U.S. Revolving Credit Facility - 364-Day [Member] [Domain]	Jun. 25, 2013 U.S. Revolving Credit facility - 364-Day [Member]
Debt Instrument [Line Items]
Current borrowing capacity													$ 500	$ 1,000
Basis spread on federal funds rate													0.50%
Basis spread on one-month LIBOR													1.00%
ABR margin, lower range													0.00%
ABR margin, higher range													0.60%
LIBOR margin, lower range													0.925%
LIBOR margin, higher range													1.60%
Facility fee, lower range													0.075%
Facility fee, higher range													0.275%
Principal amount of notes retired	1,669	1,700	1,702	0	500	500	500		500		0	0
Debt instrument, face amount										500
Fixed interest rate										5.00%
Net proceeds from sale of notes								495
Underwriting and issue discount								5
Redemption price as percentage of principal amount										100.00%
Treasury rate basis points										0.50
Fair value of long-term debt	$ 1,717	$ 1,652	$ 1,635