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Goodwill and Intangible Assets (Tables) | 6 Months Ended
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Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract] |
Changes in Carrying Amount of Goodwill | The following summarizes changes to the goodwill balance for the six months ended December 31, 2018
|  | Carrying amount |
Beginning balance July 1, 2018 |  | $ | 318.6 |
Acquisitions (see Note 3) |  |  | 95.1 |
Translation adjustments |  |  | (0.5 | )
Ending balance December 31, 2018 |  | $ | 413.2 |
Summarized Amounts Reported as Intangible Assets | The following summarizes the amounts reported as intangible assets
|  | Gross |  |  |  |  |  |  |  |  |
|  | Carrying |  |  | Accumulated |  |  |  |  |
|  | Amount |  |  | Amortization |  |  | Net |
At December 31, 2018: |  |  |  |  |  |  |  |  |  |  |  |
Purchased licenses and technologies |  | $ | 817.9 |  |  | $ | (126.4 | ) |  | $ | 691.5 |
Customer relationships |  |  | 4.6 |  |  |  | (3.5 | ) |  |  | 1.1 |
Trademarks |  |  | 3.0 |  |  |  | (1.1 | ) |  |  | 1.9 |
Total amortized intangible assets |  |  | 825.5 |  |  |  | (131.0 | ) |  |  | 694.5 |
In-process research and development |  |  | 23.1 |  |  |  | — |  |  |  | 23.1 |
Total unamortized intangible assets |  |  | 23.1 |  |  |  | — |  |  |  | 23.1 |
Total intangible assets |  | $ | 848.6 |  |  | $ | (131.0 | ) |  | $ | 717.6 |
|  | 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 |  |  | Six months ended |
|  | December 31, |  |  | December 31, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Amortization of intangible assets |  | $ | 15.4 |  |  | $ | 9.3 |  |  | $ | 28.8 |  |  | $ | 18.6 |

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