No definition available.

Name:	rad_DescriptionOfBusinessAbstract
Namespace Prefix:	rad_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Revenue from front-end sales of the entity.

+ References

No definition available.

+ Details

Name:	rad_FrontEndSalesRevenueNet
Namespace Prefix:	rad_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Number of distribution centers agreed to sell under the Asset Purchase Agreement.

+ References

No definition available.

+ Details

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

- Definition

Number of stores Rite Aid agreed to sell under the Asset Purchase Agreement.

+ References

No definition available.

+ Details

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

- Definition

Revenue from pharmacy sales of the entity.

+ References

No definition available.

+ Details

Name:	rad_PharmacySalesRevenueNet
Namespace Prefix:	rad_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477

+ Details

Name:	us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

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

- Definition

Represents the number of stores.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfStores
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount, after sales adjustments, returns, allowances, and discounts, of revenue classified as other.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(a),(d))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

Name:	us-gaap_OtherSalesRevenueNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

+ Details

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

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

Name:	us-gaap_SalesRevenueNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_CounterpartyNameAxis=rad_WalgreensBootsAllianceAndWalgreenCo.Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=rad_RiteAidMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=us-gaap_ParentCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConsolidationItemsAxis=us-gaap_IntersegmentEliminationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementScenarioAxis=rad_PendingAssetSaleMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=rad_RetailPharmacyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=rad_PharmacyServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Summary of Significant Accounting Policies - Description of Business (Details) $ in Thousands					3 Months Ended								12 Months Ended			13 Months Ended
	Mar. 03, 2018 USD ($) store item	Sep. 18, 2017 USD ($) store item	Jun. 24, 2015 segment	Jun. 23, 2015 segment	Mar. 03, 2018 USD ($) store item	Dec. 02, 2017 USD ($)	Sep. 02, 2017 USD ($)	Jun. 03, 2017 USD ($)	Mar. 04, 2017 USD ($)	Nov. 26, 2016 USD ($)	Aug. 27, 2016 USD ($)	May 28, 2016 USD ($)	Mar. 03, 2018 USD ($) segment store item	Mar. 04, 2017 USD ($)	Feb. 27, 2016 USD ($)	Mar. 27, 2018 USD ($)
Description of Business
Ownership interest (as a percent)	100.00%				100.00%								100.00%
Number of reportable segments \| segment			2	1									2
Numbers of stores \| store	2,550				2,550								2,550
Revenues					$ 5,394,264	$ 5,353,170	$ 5,345,011	$ 5,436,523	$ 5,903,385	$ 5,669,111	$ 5,629,559	$ 5,725,485	$ 21,528,968	$ 22,927,540	$ 20,770,237
WBA and Walgreen Co.
Description of Business
Proceeds from assets sold													$ 3,135,000
WBA and Walgreen Co. \| Rite Aid
Description of Business
Numbers of stores \| store	1,651				1,651								1,651
Proceeds from assets sold													$ 3,553,486			$ 4,156,686
WBA and Walgreen Co. \| Rite Aid Corporation (Parent Company Only)
Description of Business
Proceeds from assets sold													3,553,500
Intersegment elimination
Description of Business
Revenues													$ (200,326)	(232,964)	(153,664)
Asset Sale \| WBA and Walgreen Co. \| Rite Aid
Description of Business
Purchase price	$ 4,375,000	$ 4,375,000
Number of stores Rite Aid agreed to sell \| store	1,932	1,932			1,932								1,932
Number of distribution centers agreed to sell \| item	3	3			3								3
Retail Pharmacy
Description of Business
Pharmacy sales													$ 10,328,376	11,072,480	11,258,112
Front end sales													5,348,613	5,538,352	5,419,889
Other revenue													155,636	155,788	142,387
Revenues													15,832,625	16,766,620	16,820,388
Pharmacy Services
Description of Business
Revenues													$ 5,896,669	$ 6,393,884	$ 4,103,513