Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Statement of Comprehensive Income [Abstract]
Net earnings	$ 596.0	$ 479.1	$ 375.0
Other comprehensive income (loss):
Foreign currency adjustment	(0.9)	0.5	0.5
Change in fair value of marketable securities, net of taxes of $0.0, $0.0 and $0.0, respectively	(0.1)	0.0	0.0
Change in fair value of derivatives and amortization of unrecognized gains and losses on derivatives, net of taxes of $0.0, $0.5 and $14.3, respectively	(4.6)	4.3	23.0
Net unamortized gain (loss) arising during period, including amortization of unrecognized net actuarial loss, net of taxes of $(0.7), $11.9 and $(16.0), respectively	(1.1)	19.3	(23.9)
Reclassification of tax effect	(15.6)	0.0	0.0
Other comprehensive income (loss)	(22.3)	24.1	(0.4)
Total comprehensive income	$ 573.7	$ 503.2	$ 374.6