Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Provision for income taxes	$ 161.4	$ 151.8	$ 132.5
Effective income tax rate	34.40%	34.60%	33.50%
Decrease in effective tax rate due to related to Federal research and development credits	0.34%		0.50%
Decrease in effective tax rate due to cumulative discrete tax benefit	0.02%
Decrease in effective tax rate due to gross tax benefit	0.36%		0.85%
Increase in effective tax rate due to additional US federal tax expense	0.16%
Foreign earnings as a percent of total company earnings	17.00%	17.00%	22.00%
Accumulated earnings attributable to foreign subsidiaries	$ 79.7	$ 73.5	$ 87.4
Deferred tax asset valuation allowances	9.8	9.2
Unrecognized tax benefits	18.2	24.4	26.6	$ 30.0
Expected unrecognized tax benefit decrease	0.5
Reserve for unrecognized tad positions	12.9	12.7	14.5
Gross decrease for prior period tax positions	9.4	5.1	6.1
Accrued interest and penalties related to uncertain tax positions	(0.3)	0.1	0.9
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	3.4	$ 5.0	$ 3.2
Foreign [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Accumulated earnings attributable to foreign subsidiaries	366.5
Net operating loss carryforwards	13.7
Foreign net operating loss carryforwards subject to expiration	1.2
Foreign net operating loss carryforwards not subject to expiration	12.5
U.S. federal [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Net operating loss carryforwards	$ 31.4
Earliest Tax Year [Member] | Foreign [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Expiration year of operating loss carryforwards	Dec. 31, 2017
Earliest Tax Year [Member] | U.S. federal [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Expiration year of operating loss carryforwards	Dec. 31, 2015
Latest Tax Year [Member] | Foreign [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Expiration year of operating loss carryforwards	Dec. 31, 2027
Latest Tax Year [Member] | U.S. federal [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Expiration year of operating loss carryforwards	Dec. 31, 2030