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		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Earnings Per Share [Abstract]
Net income	$ 99,449	$ 113,187	$ 202,566	$ 200,703
Net income attributable to non-controlling interest		289		707
Net income attributable to Harman International Industries, Incorporated	$ 99,449	$ 112,898	$ 202,566	$ 199,996
Weighted average shares outstanding	70,986	72,079	70,938	72,060
Employee stock options	726	751	572	489
Total weighted average shares outstanding	71,712	72,830	71,510	72,549
Earnings per share, Basic	$ 1.40	$ 1.57	$ 2.86	$ 2.78
Earnings per share, Diluted	$ 1.39	$ 1.55	$ 2.83	$ 2.76