CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Millions	Sep. 30, 2020	Jun. 30, 2020
Statement of Financial Position [Abstract]
Trade receivables, allowances	$ 56.5	$ 57.3
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)	1,000,000.0	800,000
Convertible Series B preferred stock, shares outstanding (in shares)	1,000,000.0	800,000
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)	1,500,000	1,500,000
Preferred stock, shares outstanding (in shares)	1,500,000	1,500,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,250,000,000.0	1,250,000,000.0
Common stock, shares issued (in shares)	831,200,000	830,600,000
Common stock, shares outstanding (in shares)	765,700,000	765,100,000
Treasury stock, at cost, shares (in shares)	65,500,000	65,500,000