CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Millions	Mar. 31, 2019	Jun. 30, 2018
Statement of Financial Position [Abstract]
Trade receivables, allowances	$ 64.3	$ 81.8
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)	10,200,000	5,000,000
Preferred stock, shares outstanding (in shares)	8,400,000	5,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000.0
Common stock, shares issued (in shares)	816,400,000	815,800,000
Common stock, shares outstanding (in shares)	751,400,000	750,700,000
Treasury stock, at cost, shares (in shares)	65,000,000	65,000,000