Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 26, 2017	Feb. 28, 2016	Feb. 26, 2017	Feb. 28, 2016
Statement of Comprehensive Income [Abstract]
Net earnings	$ 165.6	$ 105.8	$ 355.3	$ 235.4
Other comprehensive income (loss):
Foreign currency adjustment	(0.1)	0.0	0.5	0.9
Change in fair value of derivatives and amortization of unrecognized gains and losses on derivatives, net of taxes of $0.0, $0.0, $0.0 and $14.3, respectively	(0.7)	1.8	2.1	22.7
Amortization of unrecognized net actuarial (loss) gain, net of taxes of $0.1, $0.0, $0.3 and $(0.1), respectively, related to pension and other post-employment benefits	0.1	(0.1)	0.4	(0.3)
Other comprehensive income (loss)	(0.7)	1.7	3.0	23.3
Total comprehensive income	$ 164.9	$ 107.5	$ 358.3	$ 258.7