Employee Benefit Plans - Other Post-employment Benefit Obligations (Details) - The Gratuity Plan - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2017 |
|
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | |||
| Benefit expense | $ 1.3 | $ 1.0 | $ 1.3 |
| Benefit obligation | $ 5.8 | $ 5.0 | $ 4.1 |