CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2020	Jun. 30, 2019
Statement of Financial Position [Abstract]
Trade receivables, allowances	$ 57.3	$ 27.5
Convertible Series B preferred stock, par value (in dollars per share)	$ 0.01
Convertible Series B preferred stock, shares authorized (in shares)	1,000,000.0
Convertible Series B preferred stock, shares issued (in shares)	800,000
Convertible Series B preferred stock, shares outstanding (in shares)	800,000
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (shares)	20,000,000.0	20,000,000.0
Preferred stock, shares issued (shares)	1,500,000	9,400,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (shares)	1,250,000,000.0	1,000,000,000.0
Common stock, shares issued (shares)	830,600,000	819,200,000
Common stock, shares outstanding (shares)	765,100,000	754,200,000
Treasury stock (shares)	65,500,000	65,000,000.0

Amount of allowance for credit loss on accounts receivable, classified as current.

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