Summary Of Significant Accounting Policies (Costs And Accumulated Amortization Of Acquired Definite-Lived Intangible Assets) (Details) - USD ($) $ in Millions	May 30, 2021	May 31, 2020
Accounting Policies [Abstract]
Definite-lived intangible assets	$ 23.8	$ 23.8
Accumulated amortization	(8.5)	(6.4)
Definite-lived intangible assets, net of accumulated amortization	15.3	17.4
Definite-lived intangible liabilities	(3.0)	(3.0)
Accumulated amortization	1.2	0.9
Definite-lived intangible liabilities, net of accumulated amortization	$ (1.8)	$ (2.1)