This element represents the gross amount awarded, to be received by, or to be remitted to the entity in settlement of litigation occurring during the period.

Name:	us-gaap_LitigationSettlementGross
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Jury Award

Name:	wmt_JuryAward
Namespace Prefix:	wmt
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Rate of Post-Judgement Interest Accrual

Name:	wmt_RateOfPostJudgementInterestAccrual
Namespace Prefix:	wmt
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration