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Other Intangibles (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 03, 2012
Feb. 26, 2011
Feb. 27, 2010
Finite-lived intangible assets      
Accumulated amortization $ (1,325,531) $ (1,191,821)  
Total 1,854,306 1,837,998  
Amortization expense for intangible assets and liabilities 143,790 173,618 184,956
Anticipated annual amortization expense for intangible assets and liabilities      
2013 115,817    
2014 90,539    
2015 73,650    
2016 62,328    
2017 49,382    
Favorable leases and other
     
Finite-lived intangible assets      
Gross carrying amount 614,862 620,786  
Accumulated amortization (374,685) (335,692)  
Remaining weighted average amortization period (in years) P10Y 10Y  
Prescription files
     
Finite-lived intangible assets      
Gross carrying amount 1,239,444 1,217,212  
Accumulated amortization (950,846) (856,129)  
Remaining weighted average amortization period (in years) P5Y 6Y  
Unfavorable lease intangibles
     
Finite-lived intangible assets      
Net carrying amount $ 82,030 $ 93,952