Income Taxes - Additional Information Regarding Examinations (Detail) |
12 Months Ended | |||
|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2016 |
Jun. 30, 2011 |
|
| Earliest Tax Year | Foreign Country | ||||
| Income Tax Examination [Line Items] | ||||
| Tax years subject to examination | 1996 | |||
| Latest Tax Year | Foreign Country | ||||
| Income Tax Examination [Line Items] | ||||
| Tax years subject to examination | 2018 | |||
| Internal Revenue Service (IRS) | Earliest Tax Year | ||||
| Income Tax Examination [Line Items] | ||||
| Tax years under audit | 2010 | 2007 | 2004 | |
| Tax years subject to examination | 2004 | |||
| Tax years expected to be subject to examination | 2014 | |||
| Internal Revenue Service (IRS) | Latest Tax Year | ||||
| Income Tax Examination [Line Items] | ||||
| Tax years under audit | 2013 | 2009 | 2006 | |
| Tax years subject to examination | 2013 | |||
| Tax years expected to be subject to examination | 2017 | |||