Represents the number of purported stockholders' complaints were voluntarily dismissed.

No definition available.

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

- Definition

Represents the number of purported stockholders that filed a complaint.

+ References

No definition available.

+ Details

Name:	rad_NumberOfPurportedStockholdersComplaintsFiled
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

The period of pilot seating program for front-end check stands in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	rad_PeriodOfPilotSeatingProgram
Namespace Prefix:	rad_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

+ References

No definition available.

+ Details

Name:	us-gaap_LitigationSettlementExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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

- Definition

The total number of new claims filed pertaining to a loss contingency during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349

+ Details

Name:	us-gaap_LossContingencyNewClaimsFiledNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_LitigationCaseAxis=rad_HallMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Commitments, Contingencies and Guarantees (Details) $ in Thousands					12 Months Ended
	Sep. 06, 2018	Aug. 03, 2018	Jul. 27, 2018	Jun. 29, 2018	Mar. 02, 2019 USD ($)	Dec. 31, 2018	Jan. 19, 2017 state
Commitments, Contingencies and Guarantees
Number of purported stockholders that filed a complaint		3	3	3
Number of purported stockholders' complaints were voluntarily dismissed	2
Settlement amount					$ 18,000
Number of states failed to report Rx savings prices \| state							18
Number of lawsuits						2
Hall
Commitments, Contingencies and Guarantees
Settlement amount					$ 18,000
Pilot seating program (in years)					2 years