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Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Aug. 27, 2011
Aug. 28, 2010
Aug. 27, 2011
Year
Matter
Auditcycle
Aug. 28, 2010
Feb. 26, 2011
Income Taxes          
Income tax expense (benefit) $ (2,712) $ 2,826 $ (439) $ 9,967  
Recognition of unrecognized tax benefits 5,687   5,687    
Recoverable indemnification asset from Jean Coutu Group 162,542   162,542   158,209
Number of audit cycles for which revenue agent report has been received     3    
Period of state income tax returns subject to examination, low end of range (in years)     3    
Period of state income tax returns examination, high end of range (in years)     5    
Reasonably possible amount of decrease in unrecognized tax positions over the next 12 months          
Amount of decrease in unrecognized tax positions including interest and penalties 97,739   97,739    
Valuation allowance against net deferred tax assets 2,254,593   2,254,593   2,199,302
Brooks Eckerd, Pending tax audit for pre-acquisition period
         
Reasonably possible amount of decrease in unrecognized tax positions over the next 12 months          
Amount of decrease in unrecognized tax positions including interest and penalties $ 60,698   $ 60,698