Restructuring - Restructuring Expenses by Reporting Business Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 14,509	$ 42,972	$ 77,244
Asset impairments	10,350	8,966	6,959
Total	24,859	51,938	84,203
Connected Car [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	(3,188)	(540)	47,147
Lifestyle Audio [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	3,665	32,691	23,645
Professional Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	13,287	10,889	6,335
Connected Services [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	752
Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ (7)	$ (68)	$ 117