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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' (DEFICIT) EQUITY PARENTHETICAL - $ / shares
12 Months Ended
May 31, 2022
May 31, 2021
May 31, 2020
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Dividends declared per common share (in dollars per share) $ 1.28 $ 1.04 $ 0.96