Cover - USD ($)
$ in Billions

12 Months Ended

Jan. 31, 2026

Mar. 16, 2026

Aug. 01, 2025

Cover [Abstract]

Document Type

10-K

Document Annual Report

true

Document Period End Date

Jan. 31, 2026

Current Fiscal Year End Date

--01-31

Document Transition Report

false

Entity File Number

1-9595

Entity Registrant Name

BEST BUY CO., INC.

Entity Incorporation, State or Country Code

MN

Entity Tax Identification Number

41-0907483

Entity Address, Address Line One

7601 Penn Avenue South

Entity Address, City or Town

Richfield

Entity Address, State or Province

MN

Entity Address, Postal Zip Code

55423

City Area Code

612

Local Phone Number

291-1000

Title of 12(b) Security

Common Stock, $0.10 par value per share

Trading Symbol

BBY

Security Exchange Name

NYSE

Entity Well-known Seasoned Issuer

Yes

Entity Voluntary Filers

No

Entity Current Reporting Status

Yes

Entity Interactive Data Current

Yes

Entity Filer Category

Large Accelerated Filer

Entity Small Business

false

Entity Emerging Growth Company

false

ICFR Auditor Attestation Flag

true

Document Financial Statement Error Correction

false

Entity Shell Company

false

Entity Public Float

$ 11.9

Entity Common Stock, Shares Outstanding

209,112,577

Documents Incorporated by Reference

Portions of the registrant's Definitive Proxy Statement relating to its 2026 Regular Meeting of Shareholders ("Proxy Statement") are incorporated by reference into Part III. The Proxy Statement will be filed with the U.S. Securities and Exchange Commission within 120 days after the end of the fiscal year to which this report relates.

Entity Central Index Key

0000764478

Document Fiscal Period Focus

FY

Amendment Flag

false

Document Fiscal Year Focus

2026