Accrued Warranties - Schedule of Accrued Warranties (Detail) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]
Accrued warranties, beginning of year	$ 163,331	$ 155,472
Warranty expense	17,066	23,423
Warranty payments (cash or in-kind)	(11,648)	(8,397)
Other	802	(10,471)
Accrued warranties, end of year	$ 169,551	$ 160,027