XML 58 R41.htm IDEA: XBRL DOCUMENT
v3.20.4

Restructuring (Composition of Restructuring Charges) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jan. 30, 2021 | Feb. 01, 2020 | Feb. 02, 2019
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | $ 277 | $ 41 | $ 46
Mexico Exit And Corporate Reorganization [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 277 |  |
Mexico Exit And Corporate Reorganization [Member] | Domestic [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 133 |  |
Mexico Exit And Corporate Reorganization [Member] | International [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 144 |  |
Mexico Exit And Corporate Reorganization [Member] | Inventory Markdowns [Member] | Cost of Sales [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 23 |  |
Mexico Exit And Corporate Reorganization [Member] | Inventory Markdowns [Member] | International [Member] | Cost of Sales [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 23 |  |
Mexico Exit And Corporate Reorganization [Member] | Asset Impairments [Member] | Restructuring Charges [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 67 |  |
Mexico Exit And Corporate Reorganization [Member] | Asset Impairments [Member] | Domestic [Member] | Restructuring Charges [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 10 |  |
Mexico Exit And Corporate Reorganization [Member] | Asset Impairments [Member] | International [Member] | Restructuring Charges [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 57 |  |
Mexico Exit And Corporate Reorganization [Member] | Termination Benefits [Member] | Restructuring Charges [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 143 |  |
Mexico Exit And Corporate Reorganization [Member] | Termination Benefits [Member] | Domestic [Member] | Restructuring Charges [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 123 |  |
Mexico Exit And Corporate Reorganization [Member] | Termination Benefits [Member] | International [Member] | Restructuring Charges [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 20 |  |
Mexico Exit And Corporate Reorganization [Member] | Currency Translation Adjustment [Member] | Restructuring Charges [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 39 |  |
Mexico Exit And Corporate Reorganization [Member] | Currency Translation Adjustment [Member] | International [Member] | Restructuring Charges [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 39 |  |
Mexico Exit And Corporate Reorganization [Member] | Other [Member] | Restructuring Charges [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 5 |  |
Mexico Exit And Corporate Reorganization [Member] | Other [Member] | International [Member] | Restructuring Charges [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | $ 5 |  |
U.S. Operating Model [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges |  | $ 41 |
Best Buy Mobile [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges |  |  | 47
Canadian brand consolidation |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges |  |  | $ (1)

X
- Definition Restructuring Charges, Including Inventory Write Down + References No definition available. + Details
Name: | bby_RestructuringChargesIncludingInventoryWriteDown
Namespace Prefix: | bby_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_RestructuringCostAndReserveLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RestructuringPlanAxis=bby_MexicoExitAndCorporateReorganizationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=bby_DomesticMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=bby_InternationalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=bby_InventoryMarkdownsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_CostOfSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=bby_AssetImpairmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_RestructuringChargesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=us-gaap_EmployeeSeveranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=bby_CurrencyTranslationAdjustmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=bby_RestructuringTypeOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringPlanAxis=bby_U.s.OperatingModelMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringPlanAxis=bby_RestructuringProgramBestBuyMobileMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringPlanAxis=bby_RestructuringProgramCanadianBrandConsolidationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |