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Stock-Based Compensation (Option Pricing Assumptions) (Details) (Stock Options, USD $)
6 Months Ended
Nov. 25, 2012
Nov. 27, 2011
Stock Options
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted-average fair value $ 12.24 $ 14.33
Dividend yield 4.00% 3.50%
Expected volatility of stock 39.70% 39.40%
Risk-free interest rate 0.80% 2.10%
Expected option life (in years) 6 years 6 months 6 years 6 months