Label	Element	Value
Cash and Cash Equivalents Held-for-sale, at Beginning of Period	bby_CashandCashEquivalentsHeldforsaleatBeginningofPeriod	$ 0

Cash and Cash Equivalents Held-for-sale, at Beginning of Period

No definition available.

Name:	bby_CashandCashEquivalentsHeldforsaleatBeginningofPeriod
Namespace Prefix:	bby_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant