Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020
Current assets
Accounts receivable allowances	$ 15,400	$ 29,200
Shareholders’ equity
Preferred stock, par value per share (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	2,500,000	2,500,000
Preferred stock, shares issued (in shares)	0	0
Common stock
Shareholders’ equity
Common stock, par value per share (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	80,000,000.0	80,000,000.0
Common stock, shares issued (in shares)	40,600,000	40,300,000
Common stock, shares outstanding (in shares)	40,600,000	40,300,000
Common stock, treasury (in shares)	24,800,000	24,800,000
Class B Stock - $1 par value
Shareholders’ equity
Common stock, par value per share (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	15,000,000.0	15,000,000.0
Common stock, shares issued (in shares)	5,100,000	5,100,000
Common stock, shares outstanding (in shares)	5,100,000	5,100,000