Shareholders' Equity - Schedule of Changes in Accumulated Other Comprehensive Income and Changes in Equity (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Schedule Of Shareholders Equity [Line Items]
Beginning Balance			$ 2,452,473
Beginning Balance				$ 2,392,826
Net income	$ 99,449	$ 113,187	202,566	200,703
Other comprehensive income, net of tax	(10,762)	(1,571)	(23,689)	(45,245)
Exercise of stock options			7,489	5,531
Repurchases related to share-based compensation arrangements			(14,930)	(11,861)
Share-based compensation, net			30,058	20,941
Excess tax benefit from share-based compensation			27,309	1,958
Treasury stock repurchases			(55,168)	(50,009)
Dividends			(49,649)	(50,382)
Non-controlling interest				(4)
Ending Balance	2,576,459		2,576,459
Ending Balance		2,464,458		2,464,458
Common Stock [Member]
Schedule Of Shareholders Equity [Line Items]
Beginning Balance			1,012	1,007
Exercise of stock options			5	4
Ending Balance	1,017	1,011	1,017	1,011
Additional Paid-in Capital [Member]
Schedule Of Shareholders Equity [Line Items]
Beginning Balance			1,410,765	1,365,257
Exercise of stock options			7,484	5,527
Repurchases related to share-based compensation arrangements			(14,930)	(11,861)
Share-based compensation, net			30,058	20,941
Excess tax benefit from share-based compensation			27,309	1,958
Ending Balance	1,460,686	1,381,822	1,460,686	1,381,822
AOCI [Member]
Schedule Of Shareholders Equity [Line Items]
Beginning Balance			(77,241)	11,434
Other comprehensive income, net of tax			(23,689)	(45,245)
Ending Balance	(100,930)	(33,811)	(100,930)	(33,811)
Retained Earnings [Member]
Schedule Of Shareholders Equity [Line Items]
Beginning Balance			2,490,570	2,229,517
Net income			202,566	199,996
Dividends			(49,649)	(50,382)
Ending Balance	2,643,487	2,379,131	2,643,487	2,379,131
Treasury Stock [Member]
Schedule Of Shareholders Equity [Line Items]
Beginning Balance			(1,372,633)	(1,232,602)
Treasury stock repurchases			(55,168)	(50,009)
Ending Balance	$ (1,427,801)	(1,282,611)	$ (1,427,801)	(1,282,611)
Total Harman International Industries, Incorporated Shareholders' Equity [Member]
Schedule Of Shareholders Equity [Line Items]
Beginning Balance				2,374,613
Net income				199,996
Other comprehensive income, net of tax				(45,245)
Exercise of stock options				5,531
Repurchases related to share-based compensation arrangements				(11,861)
Share-based compensation, net				20,941
Excess tax benefit from share-based compensation				1,958
Treasury stock repurchases				(50,009)
Dividends				(50,382)
Ending Balance		2,445,542		2,445,542
Non Controlling Interest [Member]
Schedule Of Shareholders Equity [Line Items]
Beginning Balance, Non Controlling Interest				18,213
Net income				707
Non-controlling interest				(4)
Ending Balance, Non Controlling Interest		$ 18,916		$ 18,916