Pension and Postretirement Benefit Plans (Schedule of Amounts Recognized in Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Millions	Jun. 30, 2021	Jun. 30, 2020
Pension | United States
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Unrecognized net actuarial losses (gains), net of taxes	$ 2.7	$ 25.4
Unrecognized prior service cost, net of taxes	0.5	0.7
Total	3.2	26.1
Pension | International
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Unrecognized net actuarial losses (gains), net of taxes	66.2	27.5
Unrecognized prior service cost, net of taxes	8.7	6.7
Total	74.9	34.2
Postretirement
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Unrecognized net actuarial losses (gains), net of taxes	(1.6)	(1.3)
Unrecognized prior service cost, net of taxes	0.0	0.0
Total	$ (1.6)	$ (1.3)