Consolidated Statements of Common Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended								12 Months Ended
	May 27, 2018	Feb. 25, 2018	Nov. 26, 2017	Aug. 27, 2017	May 28, 2017	Feb. 26, 2017	Nov. 27, 2016	Aug. 28, 2016	May 27, 2018	May 28, 2017	May 29, 2016
Statement of Stockholders' Equity [Abstract]
Dividends declared on common stock (in dollars per share)	$ 0.2125	$ 0.2125	$ 0.2125	$ 0.2125	$ 0.20	$ 0.2	$ 0.25	$ 0.25	$ 0.85	$ 0.90	$ 1.00