Financing Arrangements (Details)	12 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)
Line of Credit Facility [Line Items]
Line of credit available	$ 1,414,000,000
Commercial paper notes outstanding	586,000,000	$ 533,800,000
Short-term borrowings	$ 587,014,000	638,466,000
Debt to debt-shareholders' equity ratio	0.55
Maximum
Line of Credit Facility [Line Items]
Debt to debt-shareholders' equity ratio, covenant, maximum	0.60
Foreign Banks
Line of Credit Facility [Line Items]
Short-term borrowings	$ 786,000	4,255,000
Commercial Paper
Line of Credit Facility [Line Items]
Line of credit	2,000,000,000
Domestic Line of Credit
Line of Credit Facility [Line Items]
Line of credit	$ 2,000,000,000
Extension option, term (in years)	1 year
Foreign Line of Credit
Line of Credit Facility [Line Items]
Line of credit	$ 48,751,000	48,338,000
Line of credit outstanding	$ 0	$ 0
Weighted-average interest rate of notes payable	2.80%	1.80%