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Income Taxes - Additional Information Regarding Examinations (Detail)	1 Months Ended	12 Months Ended
	Apr. 30, 2020	Jun. 30, 2020	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		2019
Internal Revenue Service (IRS) | Earliest Tax Year
Income Tax Examination [Line Items]
Tax years under audit	2014		2010	2007	2004
Tax years subject to examination		2004
Internal Revenue Service (IRS) | Latest Tax Year
Income Tax Examination [Line Items]
Tax years under audit	2017		2013	2009	2006
Tax years subject to examination		2013

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Tax year being audited in the income tax examination, in CCYY format.

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Tax year that remains open to examination under enacted tax laws, in CCYY format.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319

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