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Stock-Based Compensation (Option Pricing Assumptions) (Details) - Stock Options - $ / shares
3 Months Ended
Aug. 30, 2015
Aug. 24, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted-average fair value (in dollars per share) $ 14.35 $ 10.35
Dividend yield 3.30% 4.50%
Expected volatility of stock 28.00% 37.30%
Risk-free interest rate 1.90% 2.10%
Expected option life (in years) 6 years 6 months 6 years 6 months
Weighted average exercise price per share (in dollars per share) $ 73.18 $ 44.49