Income Taxes (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Jun. 30, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Tax benefit		$ (8.4)	$ 9.1	$ (10.6)	$ (1.8)
Income tax expense as a percent of pre-tax income (loss)		28.90%	27.60%	33.00%	(100.00%)
Income tax benefit associated with repatriation of foreign subsidiaries			$ 0.8	$ 0.9
Discrete tax tax charge				2.1	$ 2.8
Net tax benefit associated with research and development					$ 0.8
Indefinitely reinvested foreign earnings		$ 95.0		95.0		$ 106.5
Foreign earnings repatriated				$ 11.5
General Retirement Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discretionary contribution	$ 100.0