Acquisitions And Divestitures (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended	12 Months Ended
Sep. 30, 2011	Jun. 30, 2011	Jun. 30, 2011 TransDigm Group Inc. [Member]	Dec. 31, 2010 TransDigm Group Inc. [Member]
Business acquisition cost			$ 240
Number of employees			400
Goodwill acquired			213
Purchase price allocation adjustments	(13.0)	(53.0)
Sales generated in last annual period prior to divestiture				61
Amount of goodwill estimated to be deductible for income tax purposes	$ 60.0

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The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

+ References

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The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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