Other Comprehensive Income (Loss) - Schedule of Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income Loss [Line Items]
Foreign currency translation losses, Pre-Tax		$ (46,751)	$ (19,924)	$ (43,360)	$ (53,247)
Changes in hedging derivatives:
Gains recognized in AOCI (effective portion), Pre-Tax		55,613	41,467	53,944	51,448
Other gains, Pre-Tax		669	87	675	23
Change in hedging derivatives, Pre-Tax		38,269	20,493	15,887	8,158
Pension liability adjustment:
Pension liability adjustment, Pre-Tax		4,229	3,008	4,934	1,902
Unrealized (losses) gains on available-for-sale securities, Pre-Tax		(735)	53	857	(81)
Other comprehensive (loss) income, Pre-Tax		(4,988)	3,630	(21,682)	(43,268)
Other comprehensive (loss) income attributable to Harman International Industries, Incorporated, Pre-Tax		(4,988)	3,630	(21,682)	(43,268)
Foreign currency translation losses, Net of Tax	[1]	(46,751)	(19,924)	(43,360)	(53,247)
Changes in hedging derivatives:
Reclassifications from AOCI into income (effective portion), Net of Tax		18,013	21,061	38,732	43,313
Gains recognized in AOCI (effective portion), Net of Tax		48,606	32,984	53,138	42,367
Other gains, Net of Tax		585	69	665	19
Change in hedging derivatives, Net of Tax	[1]	33,447	16,301	15,648	6,718
Pension liability adjustment:
Pension liability adjustment, Net of Tax	[1]	3,010	2,018	3,475	1,335
Unrealized (losses) gains on available-for-sale securities, Net of Tax	[1]	(468)	34	548	(51)
Other comprehensive (loss) income, Net of Tax		(10,762)	(1,571)	(23,689)	(45,245)
Other comprehensive (loss) income attributable to Harman International Industries, Incorporated, Net of Tax	[1]	(10,762)	(1,571)	(23,689)	(45,245)
Cost of Sales [Member]
Changes in hedging derivatives:
Reclassifications from AOCI into income (effective portion), Pre-Tax		(22,065)	(21,042)	(42,158)	(43,299)
Changes in hedging derivatives:
Reclassifications from AOCI into income (effective portion), Net of Tax		(19,285)	(16,737)	(41,528)	(35,656)
Selling, General and Administrative Expense [Member]
Changes in hedging derivatives:
Reclassifications from AOCI into income (effective portion), Pre-Tax		93	(24)	80	(24)
Pension liability adjustment:
Amortization of prior service cost, Pre-Tax		214	247	428	494
Amortization of net loss, Pre-Tax		1,029	1,309	2,081	2,624
Expected return on plan assets, Pre-Tax		(27)	(31)	(55)	(62)
Changes in hedging derivatives:
Reclassifications from AOCI into income (effective portion), Net of Tax		81	(19)	79	(20)
Pension liability adjustment:
Amortization of prior service cost, Net of Tax		152	166	301	347
Amortization of net loss, Net of Tax		732	878	1,464	1,842
Expected return on plan assets, Net of Tax		(19)	(21)	(39)	(44)
Interest Expense, Net [Member]
Changes in hedging derivatives:
Reclassifications from AOCI into income (effective portion), Pre-Tax		6	5	11	10
Changes in hedging derivatives:
Reclassifications from AOCI into income (effective portion), Net of Tax		5	4	9	8
Foreign Exchange Losses (Gains), Net [Member]
Changes in hedging derivatives:
Reclassifications from AOCI into income (effective portion), Pre-Tax		3,953		3,335
Pension liability adjustment:
Other gains (losses), Pre-Tax		3,013	1,483	2,480	(1,154)
Changes in hedging derivatives:
Reclassifications from AOCI into income (effective portion), Net of Tax		3,455		3,285
Pension liability adjustment:
Other gains (losses), Net of Tax		$ 2,145	$ 995	$ 1,749	$ (810)

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