Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Provision (benefit) for income taxes from continuing operations
Total income tax expense	$ 14.1	$ 14.9	$ 20.6	$ 31.8
Income tax expense as a percent of pre-tax income	36.90%	33.60%	35.40%	33.20%
Unfavorable impact of bonus depreciation on domestic manufacturing benefits			$ 1.6