Other Income, Net (Details) - USD ($) $ in Millions	3 Months Ended
Sep. 30, 2018	Sep. 30, 2017
Other Income and Expenses [Abstract]
Unrealized gains on company-owned life insurance contracts and investments held in rabbi trusts	$ 1.0	$ 0.6
Foreign exchange gain	0.5	0.1
Interest income	0.1	0.0
Pension earnings, interest and deferrals	0.0	(0.5)
Total other income, net	$ 1.6	$ 0.2

Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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Amount of operating interest income, including, but not limited to, amortization and accretion of premiums and discounts on securities.

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The change in cash surrender or contract value during the period which adjusted the amount of premiums paid in determining the expense or income recognized under the contract for the period.

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Amount of expense (reversal of expense) for net periodic benefit cost components, excluding service cost component, of defined benefit plan. Amount includes, but is not limited to, interest cost, expected (return) loss on plan asset, amortization of prior service cost (credit), amortization of (gain) loss, amortization of transition (asset) obligation, settlement (gain) loss, curtailment (gain) loss and certain termination benefits.

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Amount of income (expense) related to nonoperating activities, classified as other.

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