Schedule of Swiss Plan's Asset Allocation (Detail)	Jun. 30, 2015	Jun. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets	100.00%	100.00%
Fixed Income Investments
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets	22.00%	22.00%
Equity Investments
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets	52.00%	54.00%
Real Estate
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets	16.00%	14.00%
Cash
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets	8.00%	8.00%
Alternative Investments
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets	2.00%	2.00%