Consolidated Statements of Changes In Stockholders' Equity (Parenthetical) - shares shares in Millions	9 Months Ended
	Feb. 25, 2018	Feb. 26, 2017
Statement of Stockholders' Equity [Abstract]
Stock option exercised (in shares)	0.8	1.5
Repurchases of common stock, (in shares)	2.5	3.5
Issuance of treasury stock under Employee Stock Purchase Plan and other plans (in shares)	0.1	0.1