Business Segment Data (Schedule Of Reports For Net Sales, Operating Income (Loss), Assets, Goodwill, Capital Expenditures And Depreciation And Amortization By Each Reporting Segment From Continuing Operations) (Detail) (USD $)	3 Months Ended												12 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2009	Sep. 30, 2009	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Segment Reporting Information [Line Items]
Net sales	$ 1,090,771,000	$ 1,095,675,000	$ 1,127,029,000	$ 1,050,603,000	$ 1,031,122,000	$ 948,196,000	$ 956,081,000	$ 836,946,000	$ 850,716,000	$ 837,011,000	$ 928,273,000	$ 748,428,000	$ 4,364,078,000	$ 3,772,345,000	$ 3,364,428,000
Operating income (loss)													300,246,000	190,051,000	85,555,000
Discontinued operations													0	0	9,483,000
Total													300,246,000	190,051,000	95,038,000
Total assets	3,169,464,000				3,058,495,000								3,169,464,000	3,058,495,000
Goodwill	180,811,000				119,357,000				105,922,000				180,811,000	119,357,000	105,922,000
Capital expenditures													112,536,000	108,357,000	60,033,000
Discontinued operations													0	0	167,000
Total													112,536,000	108,357,000	60,200,000
Depreciation and amortization													122,225,000	123,264,000	139,946,000
Discontinued operations													0	0	911,000
Total													122,225,000	123,264,000	140,857,000
Infotainment [Member]
Segment Reporting Information [Line Items]
Net sales													2,401,562,000	2,088,599,000	1,836,194,000
Operating income (loss)													180,529,000	77,384,000	(4,885,000)
Total assets	962,332,000				1,149,494,000								962,332,000	1,149,494,000
Goodwill	5,856,000				8,069,000								5,856,000	8,069,000
Capital expenditures													66,050,000	61,712,000	40,985,000
Depreciation and amortization													66,130,000	70,796,000	78,245,000
Lifestyle [Member]
Segment Reporting Information [Line Items]
Net sales													1,330,798,000	1,087,270,000	1,023,532,000
Operating income (loss)													141,899,000	101,883,000	92,567,000
Total assets	1,071,491,000				992,796,000								1,071,491,000	992,796,000
Goodwill	109,945,000				39,167,000								109,945,000	39,167,000
Capital expenditures													23,743,000	18,084,000	2,724,000
Depreciation and amortization													32,890,000	30,773,000	40,640,000
Professional [Member]
Segment Reporting Information [Line Items]
Net sales													630,731,000	595,687,000	504,029,000
Operating income (loss)													82,588,000	90,668,000	70,584,000
Total assets	432,104,000				407,412,000								432,104,000	407,412,000
Goodwill	65,010,000				72,121,000								65,010,000	72,121,000
Capital expenditures													10,910,000	14,645,000	11,060,000
Depreciation and amortization													14,149,000	16,432,000	17,828,000
Other [Member]
Segment Reporting Information [Line Items]
Net sales													987,000	789,000	673,000
Operating income (loss)													(104,770,000)	(79,884,000)	(72,711,000)
Total assets	703,537,000				508,793,000								703,537,000	508,793,000
Goodwill	0				0								0	0
Capital expenditures													11,833,000	13,916,000	5,264,000
Depreciation and amortization													$ 9,056,000	$ 5,263,000	$ 3,233,000