Related Party Transactions - Additional Information (Detail) € in Millions, $ in Millions			1 Months Ended	3 Months Ended	12 Months Ended
	Jun. 30, 2015 USD ($)	Apr. 20, 2010 EUR (€)	Dec. 31, 2009	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2013 USD ($)
Related Party Transaction [Line Items]
Amount of transactions with related party | €		€ 6.0
Other current asset, related party				$ 11.9		$ 11.9
Total expenses for engineering and software development services					$ 21.4	28.6	$ 41.2
Expenses paid for engineering and software development services					27.5	42.5	$ 42.5
Joint Venture investment amount	$ 10.0				10.0
Registered capital of Joint Venture	$ 7.0			$ 1.4	$ 7.0	$ 1.4
Investment ownership percentage in Joint Venture				60.00%	60.00%
Joint venture investment funding percentage				20.00%		20.00%
Joint venture capital portion				$ 0.8
Neusoft [Member]
Related Party Transaction [Line Items]
Related party transactions duration of agreement, years			3 years
Investment ownership percentage in Joint Venture				40.00%	40.00%
Joint venture capital portion				$ 0.6
Neusoft [Member] | Software Asset Amortized [Member]
Related Party Transaction [Line Items]
Related party transactions duration of agreement, years						4 years
Neusoft [Member] | Innovative Systems GmbH [Member]
Related Party Transaction [Line Items]
Related party transactions duration of agreement, years		5 years
Related party transactions, term of extended agreement	1 month