CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2023	Jun. 30, 2022
Statement of Financial Position [Abstract]
Trade receivables, allowances	$ 23.2	$ 53.4
Convertible Series B preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Convertible Series B preferred stock, shares authorized (in shares)	1,000,000.0	1,000,000.0
Convertible Series B preferred stock, shares issued (in shares)	100,000	100,000
Convertible Series B preferred stock, shares outstanding (in shares)	100,000	100,000
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	20,000,000.0	20,000,000.0
Preferred stock, shares issued (in shares)	1,000,000.0	1,500,000
Preferred stock, shares outstanding (in shares)	1,000,000.0	1,500,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,250,000,000	1,250,000,000
Common stock, shares issued (in shares)	919,300,000	905,500,000
Common stock, shares outstanding (in shares)	852,800,000	839,200,000
Treasury stock (in shares)	66,500,000	66,300,000