Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Stockholders' Equity (Parenthetical)

v3.20.2
Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares
12 Months Ended
May 31, 2020
May 31, 2019
May 31, 2018
Consolidated Statements of Stockholders' Equity [Abstract]      
Cash dividends declared, per share $ 2.48 $ 2.30 $ 2.06