Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	May 28, 2017	May 29, 2016
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 3.1	$ 3.2
Common stock, par value (in dollars per share)	$ 5	$ 5
Common stock, shares authorized	1,200,000,000	1,200,000,000
Common stock, shares issued	567,907,172	567,907,172
Treasury stock, common shares	151,387,209	129,842,206