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Consolidated Balance Sheet (Parenthetical) - USD ($)
$ in Thousands
May 31, 2021
May 31, 2020
Statement Of Financial Position [Abstract]    
Trade accounts receivable, allowances $ 55,922 $ 55,847
Preferred stock, par value $ 0.01 $ 0.01
Preferred stock, authorized 50,000,000 50,000,000
Preferred stock, issued 0 0
Common stock, par value $ 0.01 $ 0.01
Common stock, authorized 300,000,000 300,000,000
Common stock, issued 144,199,000 143,261,000
Common stock, outstanding 129,573,000 129,511,000