Earnings Per Share - Schedule of Calculation of Basic and Diluted Earnings per Share of Common Stock Outstanding (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended												12 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share [Abstract]
Net income	$ 72,928	$ 88,819	$ 113,187	$ 87,517	$ 73,642	$ 70,249	$ 116,164	$ 82,934	$ 43,113	$ 73,385	$ 71,629	$ 46,452	$ 362,451	$ 342,989	$ 234,579
Net income (loss) attributable to non-controlling interest	15	(5)	289	418	465	(46)	(71)	(39)	(113)	0	0	0	717	309	(113)
Net income attributable to Harman International Industries, Incorporated	$ 72,913	$ 88,824	$ 112,898	$ 87,099	$ 73,177	$ 70,295	$ 116,235	$ 82,973	$ 43,226	$ 73,385	$ 71,629	$ 46,452	$ 361,734	$ 342,680	$ 234,692
Weighted average shares outstanding													71,866	70,147	69,073
Employee stock options													666	723	816
Total weighted average shares outstanding													72,532	70,870	69,889
Earnings per share, Basic	$ 1.02	$ 1.23	$ 1.57	$ 1.21	$ 1.02	$ 1.00	$ 1.67	$ 1.20	$ 0.63	$ 1.06	$ 1.04	$ 0.67	$ 5.03	$ 4.89	$ 3.40
Earnings per share, Diluted	$ 1.01	$ 1.22	$ 1.55	$ 1.20	$ 1.01	$ 0.99	$ 1.65	$ 1.18	$ 0.62	$ 1.05	$ 1.03	$ 0.66	$ 4.99	$ 4.84	$ 3.36