Credit Agreements 2016 Credit Agreement (Details) - USD ($) $ in Millions	9 Months Ended
	Mar. 31, 2016	Mar. 11, 2016
Line of Credit Facility [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.30%
2016 Credit Agreement [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.25%
Term Loan [Member] | 2016 Credit Agreement [Member]
Line of Credit Facility [Line Items]
Long-term Debt	$ 400.0	$ 400.0
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Remaining Borrowing Capacity	285.0
Revolving Credit Facility [Member] | 2016 Credit Agreement [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Current Borrowing Capacity		350.0
Long-term Line of Credit	65.0	65.0
Swingline Loan [Member] | 2016 Credit Agreement [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Current Borrowing Capacity		$ 100.0
2016 Credit Agreement [Member]
Line of Credit Facility [Line Items]
Deferred Finance Costs, Noncurrent, Net	$ 3.3
LIBOR Plus Margin [Member] | 2016 Credit Agreement [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.00%
Federal Funds Plus Margin [Member] | 2016 Credit Agreement [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.50%
One Month LIBOR Plus Rate [Member] | 2016 Credit Agreement [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%
One Month LIBOR Plus Margin [Member] | 2016 Credit Agreement [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Debt Instrument, Redemption, Period Five [Member] | Term Loan [Member] | 2016 Credit Agreement [Member]
Line of Credit Facility [Line Items]
Term Loan, Quarterly Principal Payment Percentage		72.50%