Earnings Per Share - Schedule of Calculation of Basic and Diluted Earnings per Share of Common Stock Outstanding (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
Earnings Per Share Basic And Diluted [Line Items]
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
Weighted average shares outstanding													69,073	68,990	71,297
Weighted average shares outstanding													69,073	68,990	71,297
Total weighted average shares outstanding													69,073	68,990	71,297
Total weighted average shares outstanding													69,889	69,736	72,083
Earnings per share													$ 3.40	$ 2.06	$ 4.62
Earnings per share													$ 3.36	$ 2.04	$ 4.57
Basic [Member]
Earnings Per Share Basic And Diluted [Line Items]
Net income													234,579	142,407	329,541
Net loss attributable to noncontrolling interest													(113)	0	0
Net income attributable to Harman International Industries, Incorporated													234,692	142,407	329,541
Weighted average shares outstanding													69,073	68,990	71,297
Weighted average shares outstanding													69,073	68,990	71,297
Employee stock options													0	0	0
Employee stock options													0	0	0
Total weighted average shares outstanding													69,073	68,990	71,297
Earnings per share													$ 3.40	$ 2.06	$ 4.62
Diluted [Member]
Earnings Per Share Basic And Diluted [Line Items]
Net income													234,579	142,407	329,541
Net loss attributable to noncontrolling interest													(113)	0	0
Net income attributable to Harman International Industries, Incorporated													$ 234,692	$ 142,407	$ 329,541
Weighted average shares outstanding													69,073	68,990	71,297
Weighted average shares outstanding													69,073	68,990	71,297
Employee stock options													816	746	786
Employee stock options													816	746	786
Total weighted average shares outstanding													69,073	68,990	71,297
Total weighted average shares outstanding													69,889	69,736	72,083
Earnings per share													$ 3.36	$ 2.04	$ 4.57