Dividend Percentage Increase

No definition available.

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- Definition

Expected amount of cash payments to be made as the result of exit or disposal activities.

+ References

No definition available.

+ Details

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- Definition

New Quarterly Dividend

+ References

No definition available.

+ Details

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- Definition

Number of Future Shop Stores Closed

+ References

No definition available.

+ Details

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- Definition

Number of Future Shop Stores Converting to Best Buy Stores.

+ References

No definition available.

+ Details

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- Definition

Special Dividend Payment, Aggregate: Total amount of the Special Dividend payment.

+ References

No definition available.

+ Details

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- Definition

Special Dividend: Amount announced to be paid as a special dividend.

+ References

No definition available.

+ Details

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- Definition

Amount expected to be recognized in earnings for the specified restructuring cost.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

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

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB Topic 5.P.4(b))

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

+ Details

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- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

+ Details

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- Definition

Period which shares may be purchased under a stock repurchase plan authorized by an entity's Board of Directors, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Details

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Subsequent Events (Details) (USD $)	36 Months Ended
Subsequent Events (Details) (USD $)	Feb. 03, 2018	Jun. 30, 2011	Jun. 30, 2007	Mar. 28, 2015	Mar. 03, 2015
Subsequent Event [Line Items]
Stock Repurchase Program, Authorized Amount		$ 5,000,000,000	$ 5,500,000,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Special Dividend per Share					$ 0.51
Special Dividend Payment, Aggregate					180,000,000
Dividend Percentage Increase					21.00%
Payments of Ordinary Dividends, Common Stock					0.23
Stock Repurchase Program, Authorized Amount					1,000,000,000
Stock Repurchase Program, Period in Force	3 years
Number of Future Shop Stores to be Closed				66
Number of Future Shop Stores Converting to Best Buy Stores				65
Minimum [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Restructuring and Related Cost, Expected Cost				200,000,000
Expected Cash Payments for Restructuring				140,000,000
Maximum [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Restructuring and Related Cost, Expected Cost				280,000,000
Expected Cash Payments for Restructuring				180,000,000