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Restructuring Charges (Narrative) (Details) $ in Millions | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Aug. 03, 2019 USD ($) | Aug. 04, 2018 USD ($) | Aug. 03, 2019 USD ($) | Aug. 04, 2018 USD ($) | Feb. 02, 2019 USD ($) | Mar. 01, 2018 store | Feb. 03, 2018 USD ($)
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges | $ 48 | $ 17 | $ 48 | $ 47 |  |  |
U.S. Operating Model [Member] |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges | 48 |  | 48 |  |  |  |
Best Buy Mobile [Member] |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges |  | 17 |  | 47 |  |  |
Number of stores to be closed | store |  |  |  |  |  | 257 |
Restructuring reserve |  | 3 |  | 3 |  |  | $ 8
Facility closure and other costs [Member] | Best Buy Mobile [Member] |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges |  | 20 |  | 49 |  |  |
Restructuring reserve |  | 2 |  | 2 |  |  |
Voluntary Early Retirement [Member] |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges | 10 |  |  |  |  |  |
Termination benefits [Member] |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges | 48 |  |  |  |  |  |
Termination benefits [Member] | U.S. Operating Model [Member] |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring reserve | $ 40 |  | $ 40 |  |  |  |
Termination benefits [Member] | Best Buy Mobile [Member] |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |
Restructuring charges |  | (3) |  | (2) |  |  |
Restructuring reserve |  | $ 1 |  | $ 1 |  |  | $ 8

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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -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=115931487&loc=d3e140904-122747 + Details
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