Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Jun. 30, 2016
Income Tax Contingency [Line Items]
Effective income tax rate	26.30%	17.10%
U.S. statutory rate	35.00%
Unrecognized tax benefits that would impact effective tax rate	$ 6.6		$ 5.6
Interest and penalties accrued	0.2		$ 0.1
Liability for uncertain tax positions that would impact the effective tax rate if recognized	$ 0.5
United States Internal Revenue Service | Earliest Tax Year
Income Tax Contingency [Line Items]
Tax year remain open to examination	2014
United States Internal Revenue Service | Latest Tax Year
Income Tax Contingency [Line Items]
Tax year remain open to examination	2017
State Jurisdictions | Earliest Tax Year
Income Tax Contingency [Line Items]
Tax year remain open to examination	2012
State Jurisdictions | Latest Tax Year
Income Tax Contingency [Line Items]
Tax year remain open to examination	2017
Foreign Taxing Jurisdictions | Earliest Tax Year
Income Tax Contingency [Line Items]
Tax year remain open to examination	2006
Foreign Taxing Jurisdictions | Latest Tax Year
Income Tax Contingency [Line Items]
Tax year remain open to examination	2017