Summary Of Significant Accounting Policies (Amortization Expense Related To Acquired Definite-Lived Intangible Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	May 26, 2019	May 27, 2018	May 28, 2017
Accounting Policies [Abstract]
Restaurant expense - below-market leases	$ 3.0	$ 3.1	$ 1.8
Restaurant expense - above-market leases	$ (1.6)	$ (1.7)	$ (1.4)