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Restructuring Charges Canadian Brand Consolidation (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 30, 2016 USD ($) | Oct. 31, 2015 USD ($) | Aug. 01, 2015 USD ($) | May. 02, 2015 USD ($) | Jan. 31, 2015 USD ($) | Nov. 01, 2014 USD ($) | Aug. 02, 2014 USD ($) | May. 03, 2014 USD ($) | Jan. 30, 2016 USD ($) store | Jan. 31, 2015 USD ($) | Feb. 01, 2014 USD ($)
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  |  |  |  | $ 198 | $ 5 | $ 149
Restructuring charges |  | $ 12 | $ 7 | $ (4) | $ 186 | $ (7) | $ 5 | $ 5 | $ 2 | $ 201 | 23 | 259
Restructuring Program Canadian Brand Consolidation [Member] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of Stores to be Closed | store |  |  |  |  |  |  |  |  |  | 66 |  |
Payments for Restructuring |  |  |  |  |  |  |  |  |  | $ (71) |  |
Restructuring Reserve, Accrual Adjustment | [1] |  |  |  |  |  |  |  |  | 3 |  |
Restructuring Reserve, Translation Adjustment |  |  |  |  |  |  |  |  |  | (7) |  |
Restructuring Reserve |  | 66 |  |  |  | 0 |  |  |  | 66 | 0 |
Restructuring Charges, Rollforward |  |  |  |  |  |  |  |  |  | $ 141 |  |
Number of Future Shop stores converted to Best Buy stores | store |  |  |  |  |  |  |  |  |  | 65 |  |
Employee Severance [Member] | Restructuring Program Canadian Brand Consolidation [Member] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Payments for Restructuring |  |  |  |  |  |  |  |  |  | $ (24) |  |
Restructuring Reserve, Accrual Adjustment | [1] |  |  |  |  |  |  |  |  | (2) |  |
Restructuring Reserve, Translation Adjustment |  |  |  |  |  |  |  |  |  | 0 |  |
Restructuring Reserve |  | 2 |  |  |  |  |  |  |  | 2 |  |
Restructuring Charges, Rollforward |  |  |  |  |  |  |  |  |  | 28 |  |
Facility Closing [Member] | Restructuring Program Canadian Brand Consolidation [Member] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Payments for Restructuring |  |  |  |  |  |  |  |  |  | (47) |  |
Restructuring Reserve, Accrual Adjustment | [1] |  |  |  |  |  |  |  |  | 5 |  |
Restructuring Reserve, Translation Adjustment |  |  |  |  |  |  |  |  |  | (7) |  |
Restructuring Reserve |  | $ 64 |  |  |  | $ 0 |  |  |  | 64 | 0 |
Restructuring Charges, Rollforward |  |  |  |  |  |  |  |  |  | 113 |  |
Continuing Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  |  |  |  | 201 | 5 | $ 149
Restructuring charges |  |  |  |  |  |  |  |  |  | 201 | $ 5 |
Continuing Operations [Member] | Restructuring Program Canadian Brand Consolidation [Member] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  |  |  |  | 200 |  |
Continuing Operations [Member] | International [Member] | Restructuring Program Canadian Brand Consolidation [Member] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  |  |  |  | 200 |  |
Restructuring charges |  |  |  |  |  |  |  |  |  | 200 |  |
Continuing Operations [Member] | International [Member] | Inventory write-downs [Member] | Restructuring Program Canadian Brand Consolidation [Member] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  |  |  |  | 3 |  |
Continuing Operations [Member] | International [Member] | Property and equipment write-downs [Member] | Restructuring Program Canadian Brand Consolidation [Member] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  |  |  |  | 30 |  |
Continuing Operations [Member] | International [Member] | Tradename Impairment [Member] | Restructuring Program Canadian Brand Consolidation [Member] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  |  |  |  | 40 |  |
Continuing Operations [Member] | International [Member] | Employee Severance [Member] | Restructuring Program Canadian Brand Consolidation [Member] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  |  |  |  | 25 |  |
Continuing Operations [Member] | International [Member] | Facility Closing [Member] | Restructuring Program Canadian Brand Consolidation [Member] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  |  |  |  | $ 102 |  |
[1] | (1) The adjustments related to termination benefits relate to higher-than-expected employee retention. Adjustments to facility closure and other costs represent changes in sublease assumptions.

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