Fair Value of Financial Instruments - Schedule of Changes in Level 3 Financial Liabilities (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 33.0	$ 17.4	$ 28.4	$ 18.6
Additional contingent consideration incurred	0.0	0.0	7.0	0.0
Net increase (decrease) in contingent consideration liability	0.0	(0.1)	0.0	(0.1)
Foreign currency impact on contingent consideration liability	(0.1)	0.2	(0.4)	(0.4)
Payments	(0.2)	(0.4)	(2.3)	(1.0)
Ending balance	$ 32.7	$ 17.1	$ 32.7	$ 17.1