Schedule II-Valuation and Qualifying Accounts [Schedule] (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2017 |
|
| Allowance for doubtful accounts | |||
| SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] | |||
| Balance at beginning of period | $ 2.7 | $ 3.7 | $ 2.3 |
| Additions charged to costs and expenses | 1.1 | 1.4 | 2.3 |
| Deductions | (1.2) | (2.4) | (0.9) |
| Balance at end of period | 2.6 | 2.7 | 3.7 |
| Deferred tax valuation allowance | |||
| SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] | |||
| Balance at beginning of period | 3.8 | 9.3 | 9.8 |
| Additions charged to costs and expenses | 0.0 | 0.0 | 0.0 |
| Deductions | (0.4) | (5.5) | (0.5) |
| Balance at end of period | $ 3.3 | $ 3.8 | $ 9.3 |