Stock Plans (Schedule of estimated fair value of stock options granted and assumptions used for Black-Scholes option-pricing model) (Details) - $ / shares	12 Months Ended
	May 29, 2016	May 31, 2015	May 25, 2014
STOCK PLANS [Abstract]
Estimated fair values of stock options granted	$ 7.24	$ 7.22	$ 6.03
Assumptions:
Risk-free interest rate	2.40%	2.60%	2.60%
Expected term	8 years 6 months	8 years 6 months	9 years
Expected volatility	17.60%	17.50%	17.40%
Dividend yield	3.20%	3.10%	3.10%