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Acquisitions (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Nov. 29, 2014
Apr. 01, 2014
Apr. 10, 2014
Acquisitions      
Combined amount paid for entities acquired, net of cash acquired $ 69,793us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired    
Cash acquired related to the acquisitions 19,945us-gaap_CashAcquiredFromAcquisition    
Goodwill related to expected future synergies and operating efficiencies $ 76,124us-gaap_Goodwill    
Health Dialog      
Acquisitions      
Ownership (as a percent)   100.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
/ us-gaap_BusinessAcquisitionAxis
= rad_HealthDialogServicesCorporationMember
 
RediClinic      
Acquisitions      
Ownership (as a percent)     100.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
/ us-gaap_BusinessAcquisitionAxis
= rad_RediClinicMember