Income Taxes - Effective income tax rate reconciliation to statutory federal rate (Details)	12 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Income Tax Disclosure [Abstract]
Statutory Federal income tax rate	35.00%	35.00%	35.00%
State and local income taxes	1.70%	0.60%	1.10%
Tax related to international activities	(5.50%)	(5.20%)	(4.50%)
Cash surrender value of life insurance - tax exempt income	(0.90%)		(0.10%)
Cash surrender value of life insurance - nondeductible expense		0.20%
Federal manufacturing deduction	(0.90%)	(1.00%)	(1.60%)
Research tax credit	(0.80%)	(1.90%)	(0.80%)
Share-based compensation	(2.70%)	0.00%	0.00%
Other	0.10%	(0.10%)	0.20%
Effective income tax rate	26.00%	27.60%	29.30%

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
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-Name Accounting Standards Codification
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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for qualified production activity.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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