Commitments, Contingencies and Guarantees (Details)	12 Months Ended
Mar. 03, 2018 case StoreManager	Jan. 19, 2017 state
Commitments and Contingencies
Number of states failed to report Rx savings prices \| state		18
Indergit
Commitments and Contingencies
Number of current and former store managers court ordered notices to be sent	7,000
Number of current and former store managers who joined the action	1,550
Number of current and former store managers to whom notices will be sent after the Court approval	1,750
Hall
Commitments and Contingencies
Number of similar cases \| case	2

Represents the number of current and former store managers court ordered notices to be sent.

No definition available.

Name:	rad_NumberOfCurrentAndFormerStoreManagersCourtOrderNoticesSent
Namespace Prefix:	rad_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of current and former store managers who have joined the legal action.

+ References

No definition available.

+ Details

Name:	rad_NumberOfCurrentAndFormerStoreManagersJoinedToAction
Namespace Prefix:	rad_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of current and former store managers to whom notices will be sent after the Court approves motion.

+ References

No definition available.

+ Details

Name:	rad_NumberOfCurrentAndFormerStoreManagersToWhomNoticesWillBeSentAfterCourtApproval
Namespace Prefix:	rad_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of similar cases in the court system that are pending a decision that may affect the outcome of a legal motion of the entity.

+ References

No definition available.

+ Details

Name:	rad_NumberOfSimilarCases
Namespace Prefix:	rad_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of states the entity failed to report Rx Savings prices as its usual and customary charges under the Medicare Part D program and to federal and state Medicaid programs.

+ References

No definition available.

+ Details

Name:	rad_NumberOfStatesWhereFailedToReportRxSavingsPrices
Namespace Prefix:	rad_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- 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_LossContingenciesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_LitigationCaseAxis=rad_IndergitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LitigationCaseAxis=rad_HallMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: