Stockholders' Equity (Narrative) (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	May 28, 2017	May 29, 2016	May 31, 2015
Cummulative preference stock, shared authorized	5.0
Number of shares of common stock authorized for repurchase	100.0
Shares purchased	25.4	10.7	22.3
Aggregate purchase price	$ 1,651.5	$ 606.7	$ 1,161.9