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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Jun. 30, 2018
Income Tax Contingency [Line Items]
U.S. statutory rate	21.00%
Effective income tax rate	18.20%	45.90%
Unrecognized tax benefits that would impact effective tax rate	$ 14.0		$ 9.9
Interest and penalties accrued	0.8		$ 0.6
Liability for uncertain tax positions that would impact the effective tax rate if recognized	$ 5.9
United States Internal Revenue Service | Earliest Tax Year
Income Tax Contingency [Line Items]
Tax year remain open to examination	2015
United States Internal Revenue Service | Latest Tax Year
Income Tax Contingency [Line Items]
Tax year remain open to examination	2019
State Jurisdictions | Earliest Tax Year
Income Tax Contingency [Line Items]
Tax year remain open to examination	2014
State Jurisdictions | Latest Tax Year
Income Tax Contingency [Line Items]
Tax year remain open to examination	2019
Foreign Taxing Jurisdictions | Earliest Tax Year
Income Tax Contingency [Line Items]
Tax year remain open to examination	2009
Foreign Taxing Jurisdictions | Latest Tax Year
Income Tax Contingency [Line Items]
Tax year remain open to examination	2019
U.S. Federal
Income Tax Contingency [Line Items]
Income tax examination, year(s) under examination	2016
Subsidiaries in Philippines
Income Tax Contingency [Line Items]
Income tax examination, year(s) under examination	2017
Subsidiary in Germany | Earliest Tax Year
Income Tax Contingency [Line Items]
Income tax examination, year(s) under examination	2012
Subsidiary in Germany | Latest Tax Year
Income Tax Contingency [Line Items]
Income tax examination, year(s) under examination	2015
Subsidiary in New Jersey | Earliest Tax Year
Income Tax Contingency [Line Items]
Income tax examination, year(s) under examination	2014
Subsidiary in New Jersey | Latest Tax Year
Income Tax Contingency [Line Items]
Income tax examination, year(s) under examination	2017

X

- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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