Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parenthetical) - $ / shares shares in Millions	3 Months Ended
	Aug. 25, 2019	Aug. 26, 2018
Statement of Stockholders' Equity [Abstract]
Dividends declared (in dollars per share)	$ 0.88	$ 0.75
Stock option exercised (in shares)	0.2	0.7
Repurchases of common stock, (in shares)	0.8	0.3
Issuance of stock under Employee Stock Purchase Plan and other plans (in shares)	0.0	0.1