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Note 8 - Stock-Based Compensation (Tables)
3 Months Ended
May. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
   
Three Months Ended
 
Black-Scholes Valuation Assumptions (1)
 
May 30, 2015
   
May 31, 2014
 
             
Weighted Average Expected Life (in years) (2)
    6.7       6.6  
Weighted Average Expected Volatility (3)
    27.59 %     28.31 %
Weighted Average Risk Free Interest Rates (4)
    1.93 %     2.11 %
Expected Dividend Yield
    -       -  
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
(Shares in thousands)
 
Number of Stock Options
   
Weighted Average
Exercise Price
 
Options outstanding, beginning of period
    3,682     $ 51.05  
Granted
    501       70.96  
Exercised
    (215 )     35.04  
Forfeited or expired
    (91 )     63.12  
Options outstanding, end of period
    3,877     $ 54.23  
Options exercisable, end of period
    2,392     $ 46.83  
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]
(Shares in thousands)
 
Number of Restricted
Shares
   
Weighted Average
Grant-Date Fair
Value
 
Unvested restricted stock, beginning of period
    3,592     $ 57.90  
Granted
    479       71.07  
Vested
    (743 )     47.81  
Forfeited
    (69 )     59.47  
Unvested restricted stock, end of period
    3,259     $ 62.10  
Share-based Compensation, Performance Shares Award Unvested Activity [Table Text Block]
(Shares in thousands)
 
Number of Performance
Stock Units
   
Weighted Average
Grant-Date Fair
Value
 
Unvested performance stock units, beginning of period
    391     $ 62.34  
Granted
    370       70.96  
Vested
    (98 )     62.34  
Forfeited
    (36 )     67.15  
Unvested performance stock units, end of period
    627     $ 67.15