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Restructuring Charges Composition of Restructuring Charges (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Feb. 03, 2018 | Jan. 28, 2017 | Jan. 30, 2016
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | $ 10 | $ 39 | $ 198
Restructuring Program Canadian Brand Consolidation [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | (2) | 3 | 200
Restructuring and Related Cost, Cost Incurred to Date | 201 |  |
Restructuring Program Canadian Brand Consolidation [Member] | Inventory write-downs [Member] | International Segment [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 0 | 0 | 3
Restructuring and Related Cost, Cost Incurred to Date | 3 |  |
Restructuring Program Canadian Brand Consolidation [Member] | Employee Severance [Member] | International Segment [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 0 | 0 | 25
Restructuring and Related Cost, Cost Incurred to Date | 25 |  |
Restructuring Program Canadian Brand Consolidation [Member] | Property and equipment write-downs [Member] | International Segment [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 0 | 0 | 30
Restructuring and Related Cost, Cost Incurred to Date | 30 |  |
Restructuring Program Canadian Brand Consolidation [Member] | Impairment of Intangible Assets Related to Restructuring [Member] | International Segment [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 0 | 0 | 40
Restructuring and Related Cost, Cost Incurred to Date | 40 |  |
Restructuring Program Canadian Brand Consolidation [Member] | Facility Closing [Member] | International Segment [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | (2) | 3 | 102
Restructuring and Related Cost, Cost Incurred to Date | 103 |  |
Restructuring Program Renew Blue Phase 2 [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 0 | 26 | 0
Restructuring Program Renew Blue Phase 2 [Member] | Employee Severance [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges |  | 18 |
Restructuring Program Renew Blue Phase 2 [Member] | Property and equipment write-downs [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges |  | 8 |
Restructuring Program Best Buy Mobile [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 9 | $ 0 | $ 0
Restructuring Program Best Buy Mobile [Member] | Employee Severance [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 8 |  |
Restructuring Program Best Buy Mobile [Member] | Property and equipment write-downs [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | $ 1 |  |

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- Definition Amount of costs incurred to date 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 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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