Summary Of Significant Accounting Policies (Narrative) (Detail) (USD $) Share data in Millions, unless otherwise specified	1 Months Ended	12 Months Ended
	Oct. 26, 2011	Jun. 30, 2012 Year Month	Jun. 30, 2011	Jun. 30, 2010
Accounting Policies [Line Items]
Uncollectible accounts receivable		$ 6,000,000	$ 7,000,000
Product warranty periods, minimum (months)		6
Product warranty periods, maximum (years)		6
Research and development, net		331,900,000	304,600,000	322,700,000
Restricted Cash on hand		7,200,000	8,000,000
Minimum percentage of likelihood for the determination of more-likely-than-not threshold for goodwill impairment		50.00%
Impairment of long-lived assets held-for-sale		600,000		1,200,000
Unbilled costs related to pre-production costs		54,800,000	40,500,000
Unbilled costs reimbursable in the next 12 months totaled		26,000,000	13,500,000
Unbilled costs reimbursable in subsequent years		28,800,000	27,000,000
Purchase and own pursuant to long-term supply arrangements for molds, dies and other tools		17,300,000	18,000,000
Income tax (benefit)		(68,388,000)	24,304,000	8,610,000
Repurchase of common stock	200,000,000	4,800,000
Repurchase of common stock, shares		3.2
Total purchase price		123,900,000
Income Taxes [Member]
Accounting Policies [Line Items]
Income tax (benefit)		$ (124,200,000)	$ 200,000	$ 4,800,000
Maximum [Member]
Accounting Policies [Line Items]
Amortization period, maximum, in years		10 months
Minimum [Member]
Accounting Policies [Line Items]
Amortization period, maximum, in years		17 years