Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares	Feb. 28, 2019	May 31, 2018
Statement of Financial Position [Abstract]
Preferred stock, par value (in Dollars per share)	$ .00001	$ .00001
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in Dollars per share)	$ .00001	$ .00001
Common stock, shares authorized	600,000,000	600,000,000
Common stock, shares issued	438,242,618	438,242,618
Common stock, shares outstanding	401,392,948	401,392,948
Common stock held in treasury, at cost	36,849,670	36,849,670