Shareholders' Equity - Schedule of Changes in Accumulated Other Comprehensive Income and Changes in Equity (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2014		Dec. 31, 2013
Schedule Of Shareholders Equity [Line Items]
Beginning Balance					$ 1,792,578
Beginning Balance, Non Controlling Interest					443
Net income	116,164		71,629		199,098		118,081
Other comprehensive income, net of tax	(7,654)	[1]	(5,180)	[1]	(6,189)	[1]	13,514	[1]
Treasury stock repurchases							(84,448)
Exercise of stock options					10,406		25,875
Repurchases related to share-based compensation arrangements					(21,924)		(12,311)
Share-based compensation, net					18,770		15,269
Excess tax benefit from share-based compensation					3,401		1,404
Dividends					(45,649)		(41,326)
Ending Balance	1,950,601				1,950,601
Ending Balance, Non Controlling Interest	333				333
Beginning Balance					1,793,021		1,644,871
Ending Balance	1,950,934		1,680,929		1,950,934		1,680,929
Preferred Stock [Member]
Schedule Of Shareholders Equity [Line Items]
Beginning Balance					0		0
Net income					0		0
Treasury stock repurchases							0
Exercise of stock options					0		0
Repurchases related to share-based compensation arrangements					0		0
Share-based compensation, net					0		0
Excess tax benefit from share-based compensation					0		0
Dividends					0		0
Ending Balance	0		0		0		0
Common Stock [Member]
Schedule Of Shareholders Equity [Line Items]
Beginning Balance					984		970
Net income					0		0
Treasury stock repurchases							0
Exercise of stock options					5		10
Repurchases related to share-based compensation arrangements					0		0
Share-based compensation, net					0		0
Excess tax benefit from share-based compensation					0		0
Dividends					0		0
Ending Balance	989		980		989		980
Additional Paid-in Capital [Member]
Schedule Of Shareholders Equity [Line Items]
Beginning Balance					1,040,254		971,748
Net income					0		0
Treasury stock repurchases							0
Exercise of stock options					10,401		25,865
Repurchases related to share-based compensation arrangements					(21,924)		(12,311)
Share-based compensation, net					18,770		15,269
Excess tax benefit from share-based compensation					3,401		1,404
Dividends					0		0
Ending Balance	1,050,902		1,001,975		1,050,902		1,001,975
AOCI [Member]
Schedule Of Shareholders Equity [Line Items]
Beginning Balance					39,799		21,800
Net income					0		0
Other comprehensive income, net of tax					(6,189)		13,514
Treasury stock repurchases							0
Exercise of stock options					0		0
Repurchases related to share-based compensation arrangements					0		0
Share-based compensation, net					0		0
Excess tax benefit from share-based compensation					0		0
Dividends					0		0
Ending Balance	33,610		35,314		33,610		35,314
Retained Earnings [Member]
Schedule Of Shareholders Equity [Line Items]
Beginning Balance					1,979,234		1,827,267
Net income					199,208		118,081
Treasury stock repurchases							0
Exercise of stock options					0		0
Repurchases related to share-based compensation arrangements					0		0
Share-based compensation, net					0		0
Excess tax benefit from share-based compensation					0		0
Dividends					45,649		41,326
Ending Balance	2,132,793		1,904,022		2,132,793		1,904,022
Treasury Stock [Member]
Schedule Of Shareholders Equity [Line Items]
Beginning Balance					(1,267,693)		(1,176,914)
Net income					0		0
Treasury stock repurchases							(84,448)
Exercise of stock options					0		0
Repurchases related to share-based compensation arrangements					0		0
Share-based compensation, net					0		0
Excess tax benefit from share-based compensation					0		0
Dividends					0		0
Ending Balance	(1,267,693)		(1,261,362)		(1,267,693)		(1,261,362)
Total Harman International Industries, Incorporated Shareholders' Equity [Member]
Schedule Of Shareholders Equity [Line Items]
Beginning Balance					1,792,578		1,644,871
Net income					199,208		118,081
Other comprehensive income, net of tax					(6,189)		13,514
Treasury stock repurchases							(84,448)
Exercise of stock options					10,406		25,875
Repurchases related to share-based compensation arrangements					(21,924)		(12,311)
Share-based compensation, net					18,770		15,269
Excess tax benefit from share-based compensation					3,401		1,404
Dividends					45,649		41,326
Ending Balance	1,950,601		1,680,929		1,950,601		1,680,929
Non Controlling Interest [Member]
Schedule Of Shareholders Equity [Line Items]
Beginning Balance, Non Controlling Interest					443		0
Net income					(110)		0
Other comprehensive income, net of tax					0
Treasury stock repurchases							0
Exercise of stock options					0		0
Repurchases related to share-based compensation arrangements					0		0
Share-based compensation, net					0		0
Excess tax benefit from share-based compensation					0		0
Dividends					0		0
Ending Balance, Non Controlling Interest	$ 333		$ 0		$ 333		$ 0

[1] Refer to Note 15 - Other Comprehensive Income (Loss) for more information.