Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 28, 2016	Feb. 22, 2015	Feb. 28, 2016	Feb. 22, 2015
Statement of Comprehensive Income [Abstract]
Net earnings	$ 105.8	$ 133.8	$ 235.4	$ 604.2
Other comprehensive income (loss):
Foreign currency adjustment	0.0	(2.0)	0.9	3.5
Change in fair value of derivatives and amortization of unrecognized gains and losses on derivatives, net of taxes of $0.0, $1.0, $14.3 and $16.9, respectively	1.8	3.0	22.7	30.4
Amortization of unrecognized net actuarial (loss) gain, net of taxes of $0.0, $0.6, $(0.1) and $10.4, respectively, related to pension and other post-employment benefits	(0.1)	1.0	(0.3)	16.4
Other comprehensive income	1.7	2.0	23.3	50.3
Total comprehensive income	$ 107.5	$ 135.8	$ 258.7	$ 654.5