Consolidated Balance Sheets (Parenthetical) - USD ($)	Mar. 31, 2019	Jun. 30, 2018
Statement of Financial Position [Abstract]
Commercial Paper	$ 0	$ 0
Allowance for doubtful accounts - trade receivables - Current	50,800,000	51,300,000
Allowance for doubtful accounts - trade receivables - Long-term	$ 500,000	$ 500,000
Preferred stock, par value (in US$ per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	300,000	300,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in US$ per share)	$ 0.1	$ 0.1
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	638,700,000	638,700,000
Common stock, shares outstanding (in shares)	435,500,000	438,800,000
Treasury stock, (in shares)	203,200,000	199,900,000