Revenues (Narratives) (Details) $ in Millions	12 Months Ended
	Jun. 30, 2019 USD ($) Distribution_Channels	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)
Disaggregation Of Revenue [Line Items]
Number of distribution channels | Distribution_Channels	2
Estimated selling price determination approach	Certain of the Company’s contracts have multiple performance obligations, as the promise to transfer individual goods or services is separately identifiable from other promises in the contracts and, therefore, is distinct.  For contracts with multiple performance obligations, the Company allocates the contract’s transaction price to each performance obligation based on its relative standalone selling price. The stand-alone selling prices are determined based on the prices at which the Company separately sells these products.  For items that are not sold separately, the Company estimates the stand-alone selling prices using the best estimated selling price approach.
Remaining revenue performance obligations	$ 203.2
Revenue recognized for deferred revenue balance	$ 126.7	$ 76.6
Commission Fees
Disaggregation Of Revenue [Line Items]
Revenue, practical expedient, incremental cost of obtaining contract [true false]	true
Contract costs capitalized, amortization period	3 years
Contract costs capitalized, amortization method	straight-line basis
Contract costs capitalized, amortization expense	$ 3.0	2.1	$ 1.5
Commission Fees | Other Assets
Disaggregation Of Revenue [Line Items]
Contract costs capitalized, amount	$ 6.5	$ 4.3
Minimum
Disaggregation Of Revenue [Line Items]
Contractual service period	1 year
Maximum
Disaggregation Of Revenue [Line Items]
Contractual service period	3 years