Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2018	Jun. 30, 2017
Current assets
Accounts receivable allowances	$ 14.4	$ 8.0
Shareholders’ equity
Redeemable, convertible Series A preferred stock, par value per share (in usd per share)	$ 1.00	$ 1.00
Redeemable, convertible Series A preferred stock, liquidation preference per share (in usd per share)	$ 1,000	$ 1,000
Redeemable, convertible Series A preferred stock, shares authorized	2,500,000	2,500,000
Redeemable, convertible Series A preferred stock, shares issued	700,000	700,000
Preferred stock, par value per share (in usd per share)	$ 1	$ 1
Preferred stock, shares authorized	2,500,000	2,500,000
Preferred stock, shares issued	0	0
Common stock
Shareholders’ equity
Common stock, par value per share (in usd per share)	$ 1	$ 1
Common stock, shares authorized	80,000,000	80,000,000
Common stock, shares issued	39,800,000	39,400,000
Common stock, shares outstanding	39,800,000	39,400,000
Common stock, treasury	24,800,000	24,800,000
Class B stock $1 par value
Shareholders’ equity
Common stock, par value per share (in usd per share)	$ 1	$ 1
Common stock, shares authorized	15,000,000	15,000,000
Common stock, shares issued	5,100,000	5,100,000
Common stock, shares outstanding	5,100,000	5,100,000