Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Feb. 28, 2023	May 31, 2022
Condensed Consolidated Balance Sheets
Accounts receivable, allowances	$ 12.9	$ 17.9
Property, plant, and equipment, accumulated depreciation	$ 261.1	$ 258.3
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
Preferred stock, shares authorized	250,000	250,000
Preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 1.00	$ 1.00
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	45,300,786	45,300,786
Treasury stock, shares issued	10,593,973	9,909,702