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Debt (Tables) | 12 Months Ended
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Jun. 30, 2018
Debt Disclosure [Abstract] |
Schedule of Contractual Interest Expense and Amortization of Discount on Notes | The contractual interest expense and amortization of discount on the Notes for fiscal 2018, were as follows (in millions):
|  | Fiscal |
|  | 2018 |
Interest expense |  | $ | 2.7 |
Amortization of discount and debt issuance costs |  |  | 16.9 |
Total interest |  | $ | 19.6 |

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