Pension and Postretirement Benefit Plans (Schedule of Amounts Recognized in Balance Sheets) (Details) - USD ($) $ in Millions	Jun. 30, 2019	Jun. 30, 2018
Pension | Domestic
Other assets
Prepaid benefit cost	$ 11.2	$ 16.9
Accrued expenses-compensation and benefits
Accrued benefit liability	(28.0)	(9.9)
Other noncurrent liabilities
Accrued benefit liability	(35.3)	(47.4)
Net amount recognized, end of year	(52.1)	(40.4)
Pension | International
Other assets
Prepaid benefit cost	157.1	137.4
Accrued expenses-compensation and benefits
Accrued benefit liability	(0.2)	(0.2)
Other noncurrent liabilities
Accrued benefit liability	(10.1)	(17.2)
Net amount recognized, end of year	146.8	120.0
Postretirement
Other assets
Prepaid benefit cost	0.0	0.0
Accrued expenses-compensation and benefits
Accrued benefit liability	(0.6)	(0.6)
Other noncurrent liabilities
Accrued benefit liability	(7.7)	(7.8)
Net amount recognized, end of year	$ (8.3)	$ (8.4)