Fair Value of Financial Instruments Fair Value of Financial Instruments - Schedule of Changes in Level 3 Financial Liabilities (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Jun. 30, 2015 |
Jun. 30, 2014 |
|
| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ||
| Beginning balance | $ 1.3 | $ 0.0 |
| Additional contingent consideration incurred | 14.5 | 0.5 |
| Increase in contingent consideration liability | 0.3 | 0.8 |
| Payments | (0.4) | 0.0 |
| Ending balance | $ 15.7 | $ 1.3 |