Subsequent Events (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Subsequent Event [Line Items]
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax		$ 78.4	$ 10.5	$ 36.7
Subsequent Event [Member]
Subsequent Event [Line Items]
Threshold of coverage for all losses per occurrence covered by reinsurance arrangement, next fiscal year	$ 1.0
Subsequent Event [Member] | Adp Indemnity [Member]
Subsequent Event [Line Items]
Payments for Reinsurance	202.0
Scenario, Forecast [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	$ 30.0