Leases - Sale/Leaseback (Details) $ in Thousands	3 Months Ended	9 Months Ended
Nov. 27, 2021 USD ($) facility	Nov. 28, 2020 USD ($) item	Nov. 27, 2021 USD ($) facility	Nov. 28, 2020 USD ($) item
Sale Leaseback Transaction [Line Items]
Number of facilities in sale/leaseback	9	6	13	1
Number of Stores \| item		5		5
Sale/leaseback proceeds	$ 25,605	$ 80,551	$ 39,790	$ 89,012
Leaseback term			15 years
Gain on sale-leaseback transactions	$ 4,884	$ 33,092	$ 5,794	$ 39,311
Minimum
Sale Leaseback Transaction [Line Items]
Leaseback term				15 years
Maximum
Sale Leaseback Transaction [Line Items]
Leaseback term				20 years

The number of facilities involved in the sale and leaseback transaction.

No definition available.

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Balance Type:	na
Period Type:	duration

- Definition

The minimum lease term for the leaseback of assets under the sale/leaseback transaction.

+ References

No definition available.

+ Details

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

- Definition

The net proceeds from the sale of assets in the sale/leaseback transaction.

+ References

No definition available.

+ Details

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Namespace Prefix:	rad_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the number of stores.

+ References

No definition available.

+ Details

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

- Definition

Amount of gain (loss) on sale and leaseback transaction from transfer of asset accounted for as sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 40
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123417830&loc=SL77919786-209982

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 55
-Paragraph 53
-URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

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- Details

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