Fair Value Measurements (Fair Value Measurements Using Significant Unobservable Inputs Reconciliation) (Details) (Derivatives: Commodities, Futures, Swaps & Options, USD $) In Millions, unless otherwise specified	9 Months Ended
	Feb. 23, 2014
Derivatives: Commodities, Futures, Swaps & Options
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balances at May 26, 2013	$ 0
Amount of gain (loss) recognized in earnings	0.1	[1]
Purchases, sales and settlements	0
Transfers in and/or out of Level 3	0
Balance at February 23, 2014	$ 0.1

[1] The location of the loss recognized in earnings is restaurant expenses, which is a component of cost of sales.