Goodwill and Intangible Assets, Net - Additional Information (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2017 |
|
| Goodwill [Line Items] | |||
| Goodwill additions | $ 247,700,000 | $ 88,200,000 | |
| Reduction in goodwill | (7,400,000) | 0 | |
| Goodwill impairment | $ 0 | 0 | $ 0 |
| Change in estimates of projected future variables that has no impact on reported value of goodwill, percentage | 10.00% | ||
| Reduction in accumulated amortization | $ 200,000 | 36,700,000 | |
| Reduction in intangible assets | 200,000 | 36,700,000 | |
| Summit | |||
| Goodwill [Line Items] | |||
| Goodwill additions | 28,900,000 | ||
| ActivePath | |||
| Goodwill [Line Items] | |||
| Goodwill additions | 191,500,000 | ||
| FundAssist | |||
| Goodwill [Line Items] | |||
| Goodwill additions | $ 27,300,000 | ||
| NACC | |||
| Goodwill [Line Items] | |||
| Goodwill additions | 18,500,000 | ||
| M&O | |||
| Goodwill [Line Items] | |||
| Goodwill additions | 28,700,000 | ||
| MAL | |||
| Goodwill [Line Items] | |||
| Goodwill additions | $ 29,200,000 | ||