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Restructuring and Other Charges, net (Additional Information) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 31, 2013 Person
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 3.8
Number of personnel eliminated	20
Personnel
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	1.4
Facilities
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 2.4

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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