Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Foreign currency translation adjustments:
Derivatives used in Net Investment Hedge, Increase (Decrease), Gross of Tax	$ (17.6)	$ (3.5)
Long-term intercompany loans	13.5	(7.7)
Translation Adjustment Functional to Reporting Currency, Increase (Decrease), Gross of Tax	36.1	10.6
Total foreign currency translation adjustment, pretax	32.0	(0.6)
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	(6.1)	(1.2)
Total foreign currency translation adjustment, net of tax	38.1	0.6
Net change in minimum pension liability
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	0.6	1.1
Total pension, pretax	0.6	1.1
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Tax	0.2	0.3
Net change in minimum pension liability, net of tax	0.4	0.8
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax	(5.2)	0.0
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax	(5.2)	0.0
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax	(1.8)	0.0
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	$ (3.4)	$ 0.0