Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Millions |
Jun. 30, 2017 |
Jun. 30, 2016 |
|---|---|---|
| Payables and Accruals [Abstract] | ||
| Accrued compensation | $ 64.5 | $ 66.1 |
| Accrued interest | 11.7 | 21.4 |
| Accrued equipment purchases/vendor expenses | 78.3 | 27.5 |
| Accrued income taxes | 7.3 | 0.0 |
| Accrued non-income taxes | 7.4 | 12.2 |
| Customer deposits | 5.1 | 8.8 |
| Unearned revenue | 40.0 | 30.8 |
| Other accrued expenses and current liabilities | 2.0 | 0.3 |
| Total accrued expenses and other current liabilities | $ 216.3 | $ 167.1 |