Quarterly Summary of Operations - Schedule of Quarterly Summary of Operations (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended												12 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Quarterly Financial Data [Abstract]
Net sales	$ 1,444,419	$ 1,404,235	$ 1,328,024	$ 1,171,805	$ 1,182,235	$ 1,061,772	$ 1,055,642	$ 998,193	$ 1,090,771	$ 1,095,675	$ 1,127,029	$ 1,050,603	$ 5,348,483	$ 4,297,842	$ 4,364,078
Gross profit	390,795	364,773	379,450	321,649	284,885	269,195	271,793	278,247	298,335	292,630	305,539	287,642	1,456,667	1,104,120	1,184,146
Net income	43,113	73,385	71,629	46,452	5,490	34,873	47,489	54,555	49,263	172,656	59,255	48,367	234,579	142,407	329,541
Net loss attributable to noncontrolling interest	(113)	0	0	0									(113)	0	0
Net income attributable to Harman International Industries Incorporated	$ 43,226	$ 73,385	$ 71,629	$ 46,452									$ 234,692	$ 142,407	$ 329,541
Earnings per share:
Earnings per share, Basic	$ 0.63	$ 1.06	$ 1.04	$ 0.67	$ 0.08	$ 0.50	$ 0.69	$ 0.79	$ 0.69	$ 2.41	$ 0.83	$ 0.68	$ 3.40	$ 2.06	$ 4.62
Earnings per share, Diluted	$ 0.62	$ 1.05	$ 1.03	$ 0.66	$ 0.08	$ 0.50	$ 0.68	$ 0.79	$ 0.69	$ 2.38	$ 0.82	$ 0.67	$ 3.36	$ 2.04	$ 4.57