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

No definition available.

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- Definition

Debt Instrument, Treasury Rate Basis Points for Redemption

+ References

No definition available.

+ Details

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- Details

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- Definition

The percentage of the principal amount at which note holders can require the entity to redeem outstanding debt in the event of a change in control triggering event.

+ References

No definition available.

+ Details

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Namespace Prefix:	bby_
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Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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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=34725769&loc=d3e28878-108400

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

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- 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 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 2: 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 3: 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

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20, 22

-Article 5

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

+ References

+ Details

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Namespace Prefix:	us-gaap_
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Period Type:	instant

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- Definition

Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

+ Details

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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

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

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 3

-Subparagraph (SX 210.12-04.(a))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690

+ Details

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Period Type:	instant

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

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- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

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Period Type:	instant

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Period Type:	instant

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Period Type:	instant

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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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

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

- Details

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Debt - Long-Term Debt (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	12 Months Ended	1 Months Ended
	Mar. 31, 2011	Jan. 31, 2015	Jul. 31, 2013	Feb. 01, 2014	Jul. 16, 2013
Long-term Debt.
Total long-term debt		1,621us-gaap_LongTermDebt		$ 1,657us-gaap_LongTermDebt
Less: current portion		(41)us-gaap_LongTermDebtCurrent		(45)us-gaap_LongTermDebtCurrent
Total long-term debt, less current portion		1,580		1,612
Long-term debt, fair value		1,677us-gaap_LongTermDebtFairValue		1,690us-gaap_LongTermDebtFairValue
Future maturities of long-term debt, including capitalized leases
2016		41
2017		375
2018		18
2019		511
2020		6
Thereafter		670
2016 and 2021 Notes [Member]
Long-term Debt.
Underwriting discounts	6
Net proceeds from the sale of the Notes	990
Redemption price, as percentage of principal amount of debt instrument (as a percent)		100.00%
Redemption price upon control triggering event, percentage of principal amount (as a percent)		101.00%
2016 Notes [Member]
Long-term Debt.
Total long-term debt		349		349
Debt instrument issued, principal amount	350
Interest rate (as a percent)		3.75%
Notes due 2018 [Member]
Long-term Debt.
Total long-term debt		500		500
Debt instrument issued, principal amount					500
Interest rate (as a percent)					5.00%
Underwriting discounts			5
Net proceeds from the sale of the Notes			495
Redemption price upon control triggering event, percentage of principal amount (as a percent)		101.00%
2021 Notes [Member]
Long-term Debt.
Total long-term debt		649		649
Debt instrument issued, principal amount	650
Interest rate (as a percent)		5.50%
Interest Rate Swap [Member]
Long-term Debt.
Total long-term debt		1		0
Financing Lease Obligations [Member]
Long-term Debt.
Total long-term debt		69		95
Capital Lease Obligations [Member]
Long-term Debt.
Total long-term debt		52		63
Other debt [Member]
Long-term Debt.
Total long-term debt		1		$ 1
Interest rate (as a percent)		6.70%
Minimum [Member] \| Financing Lease Obligations [Member]
Long-term Debt.
Interest rate (as a percent)		3.00%
Minimum [Member] \| Capital Lease Obligations [Member]
Long-term Debt.
Interest rate (as a percent)		1.90%
Maximum [Member] \| Financing Lease Obligations [Member]
Long-term Debt.
Interest rate (as a percent)		8.10%
Maximum [Member] \| Capital Lease Obligations [Member]
Long-term Debt.
Interest rate (as a percent)		9.30%
Notes due 2018 [Member]
Long-term Debt.
Redemption price, as percentage of principal amount of debt instrument (as a percent)		100.00%
Debt Instrument, Treasury Rate Basis Points for Redemption		50