Commitments And Contingencies (Details) (USD $)	6 Months Ended
	Nov. 25, 2012	Nov. 25, 2012 Workers Compensation and General Liabilities Accrued	May 27, 2012 Workers Compensation and General Liabilities Accrued	Nov. 25, 2012 Operating Lease Obligation	May 27, 2012 Operating Lease Obligation	Nov. 25, 2012 Property Lease Guarantee	May 27, 2012 Property Lease Guarantee
Commitment and Contigencies [Line Items]
Standby letters of credit		$ 107,000,000	$ 99,200,000	$ 19,800,000	$ 20,300,000
Guarantees associated with leased properties						4,800,000	5,400,000
Fair value of potential payments discounted at pre-tax cost of capital related to guarantee obligations						3,800,000	4,100,000
Accrued liabilities resulting from reassessment of likelihood of third parties defaulting on assignment agreements	$ 0