Income Taxes (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Oct. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Income tax expense (benefit)		$ 1.3	$ 3.6	$ 2.2	$ 10.8
Income tax expense as a percent of pre-tax income (loss)		15.70%	23.80%	73.30%	34.60%
Income tax benefit associated with repatriation of foreign subsidiaries		$ 0.9
Net tax benefit associated with research and development			$ 0.8	$ 0.3
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discrete tax tax charge				2.1	$ 2.0
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