Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Long-term Debt, Minimum Prepayment of Principal Amount

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Weighted average interest rate of debt outstanding.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

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Credit Arrangements - Note Purchase Agreement (Details) - USD ($) $ in Millions	Jul. 25, 2013	Jun. 30, 2017	Jun. 30, 2016	Jun. 12, 2015
Debt Instrument [Line Items]
Long-term Line of Credit				$ 7.1
Notional Amount		$ 604.8	$ 468.7
Senior Notes [Member] \| 3.11% Senior Notes due in 2020 [Member]
Debt Instrument [Line Items]
Principal amount of debt	$ 100.0
Interest rate	3.11%
Proceeds from Issuance of Long-term Debt	$ 100.0
Prepayment of aggregate principal amount, minimum percent	10.00%
Long-term Line of Credit		100.0
Deferred Finance Costs, Net		$ 0.3
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt, Weighted Average Interest Rate		3.05%
Revolving Credit Facility [Member] \| 2013 Credit Agreement [Member]
Debt Instrument [Line Items]
Repayments of Long-term Lines of Credit	$ 100.0