Fair Value of Financial Instruments - Schedule of Changes in Level 3 Financial Liabilities (Details) - USD ($) $ in Millions	6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 5.5	$ 15.7
Additional contingent consideration incurred	0.0	0.7
Increase (decrease) in contingent consideration liability	0.3	(1.0)
Payments	0.0	(1.0)
Ending balance	$ 5.9	$ 14.4