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Goodwill and Intangible Assets (Tables) | 9 Months Ended
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Mar. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract] |
Changes in Carrying Amount of Goodwill | The following summarizes changes to the goodwill balance for the nine months ended March 31, 2019
|  | Carrying amount |
Beginning balance July 1, 2018 |  | $ | 318.6 |
Acquisitions (see Note 3) |  |  | 98.3 |
Translation adjustments |  |  | (1.0 | )
Ending balance March 31, 2019 |  | $ | 415.9 |
Summarized Amounts Reported as Intangible Assets | The following summarizes the amounts reported as intangible assets
|  | Gross |  |  |  |  |  |  |  |  |
|  | Carrying |  |  | Accumulated |  |  |  |  |
|  | Amount |  |  | Amortization |  |  | Net |
At March 31, 2019: |  |  |  |  |  |  |  |  |  |  |  |
Purchased licenses and technologies |  | $ | 815.3 |  |  | $ | (141.4 | ) |  | $ | 673.9 |
Customer relationships |  |  | 4.6 |  |  |  | (3.6 | ) |  |  | 1.0 |
Trademarks |  |  | 3.0 |  |  |  | (1.2 | ) |  |  | 1.8 |
Total amortized intangible assets |  |  | 822.9 |  |  |  | (146.2 | ) |  |  | 676.7 |
In-process research and development |  |  | 22.8 |  |  |  | — |  |  |  | 22.8 |
Total unamortized intangible assets |  |  | 22.8 |  |  |  | — |  |  |  | 22.8 |
Total intangible assets |  | $ | 845.7 |  |  | $ | (146.2 | ) |  | $ | 699.5 |
|  | Gross |  |  |  |  |  |  |  |  |
|  | Carrying |  |  | Accumulated |  |  |  |  |
|  | Amount |  |  | Amortization |  |  | Net |
At June 30, 2018: |  |  |  |  |  |  |  |  |  |  |  |
Purchased licenses and technologies |  | $ | 526.4 |  |  | $ | (98.0 | ) |  | $ | 428.4 |
Customer relationships |  |  | 4.6 |  |  |  | (3.3 | ) |  |  | 1.3 |
Trademarks |  |  | 3.0 |  |  |  | (1.0 | ) |  |  | 2.0 |
Total amortized intangible assets |  |  | 534.0 |  |  |  | (102.3 | ) |  |  | 431.7 |
In-process research and development |  |  | 23.5 |  |  |  | — |  |  |  | 23.5 |
Total unamortized intangible assets |  |  | 23.5 |  |  |  | — |  |  |  | 23.5 |
Total intangible assets |  | $ | 557.5 |  |  | $ | (102.3 | ) |  | $ | 455.2 |
Amortization for Intangible Assets | The Company recorded amortization expense during the respective periods for these intangible assets as follows:
|  | Three months ended |  |  | Nine months ended |
|  | March 31, |  |  | March 31, |
|  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Amortization of intangible assets |  | $ | 15.2 |  |  | $ | 9.3 |  |  | $ | 44.0 |  |  | $ | 28.0 |

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