Pension and Postretirement Benefit Plans (Schedule of amounts recognized in shareholders' equity) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Jun. 30, 2017
Pension | International
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Unrecognized net actuarial losses (gains), net of taxes	$ 2.6
Unrecognized prior service cost (credit), net of taxes	0.0
Total	2.6
Pension | Domestic
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Unrecognized net actuarial losses (gains), net of taxes	20.7	$ 18.5
Unrecognized prior service cost (credit), net of taxes	1.5	0.7
Total	22.2	19.2
Postretirement
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Unrecognized net actuarial losses (gains), net of taxes	(1.8)	(1.2)
Unrecognized prior service cost (credit), net of taxes	0.0	(0.2)
Total	$ (1.8)	$ (1.4)