Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets (Parenthetical)

v3.6.0.2
Consolidated Balance Sheets (Parenthetical) - $ / shares
Nov. 30, 2016
May 31, 2016
Stockholders' equity    
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 600,000,000 600,000,000
Common stock, shares issued 358,800,000 360,400,000
Common stock, shares outstanding 358,800,000 360,400,000