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Summary of Significant Accounting Policies - FY thru Revenue (Details) $ in Thousands		3 Months Ended								12 Months Ended
	Jan. 01, 2020 item	Feb. 29, 2020 USD ($)	Nov. 30, 2019 USD ($)	Aug. 31, 2019 USD ($)	Jun. 01, 2019 USD ($)	Mar. 02, 2019 USD ($)	Dec. 01, 2018 USD ($)	Sep. 01, 2018 USD ($)	Jun. 02, 2018 USD ($)	Feb. 29, 2020 USD ($)	Mar. 02, 2019 USD ($)	Mar. 03, 2018 USD ($)
Fiscal Year
Length of reporting period										364 days	364 days	364 days
Deferred Financing Costs
Amortization expenses of deferred financing costs										$ 10,187	$ 10,761	$ 8,403
Revenue Recognition
Number of points for Gold status \| item	500
Measurement period	6 months
Percentage discount on qualifying purchases of front end merchandise on achieving "Gold" tier	20.00%
Total revenue		$ 5,727,242	$ 5,462,298	$ 5,366,264	$ 5,372,589	$ 5,379,645	$ 5,450,060	$ 5,421,362	$ 5,388,490	21,928,393	21,639,557	21,528,968
Intersegment elimination
Revenue Recognition
Total revenue										(247,353)	(211,283)	(200,326)
Retail Pharmacy
Revenue Recognition
Accrued contract liabilities		52,668				63,720				52,668	63,720
Accrued contract liabilities included in other current liabilities		52,668				51,042				52,668	51,042
Accrued contract liabilities included in noncurrent liabilities		$ 0				$ 12,678				0	12,678
Other revenue										146,917	150,461	155,636
Total revenue										15,616,186	15,757,152	15,832,625
Pharmacy sales
Revenue Recognition
Revenue from contract with customer										10,354,293	10,391,539	10,328,376
Front end sales
Revenue Recognition
Revenue from contract with customer										5,114,976	5,215,152	5,348,613
Pharmacy Services
Revenue Recognition
Total revenue										$ 6,559,560	6,093,688	5,896,669
Prescription files
Intangible Assets
Estimated useful life, acquired assets										10 years
Estimated useful life of purchased prescription files acquired in other than business combinations										5 years
Trade names
Intangible Assets
Estimated useful life of purchased prescription files acquired in other than business combinations										10 years
CMS license
Intangible Assets
Estimated useful life of purchased prescription files acquired in other than business combinations										25 years
Minimum \| Customer relationships
Intangible Assets
Estimated useful life, acquired assets										10 years
Maximum \| Customer relationships
Intangible Assets
Estimated useful life, acquired assets										20 years
Buildings \| Minimum
Fiscal Year
Useful life										30 years
Buildings \| Maximum
Fiscal Year
Useful life										45 years
Equipment \| Minimum
Fiscal Year
Useful life										3 years
Equipment \| Maximum
Fiscal Year
Useful life										15 years
Internal-use software
Fiscal Year
Capitalized costs										$ 15,240	$ 13,716	$ 13,940
Rite Aid Subsidiaries [Member]
Fiscal Year
Ownership interest (as a percent)		100.00%								100.00%