Amount of impairment loss from capitalized computer software costs.

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Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

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Percentage of the total number of positions eliminated as of the balance sheet date since inception of the restructuring plan(s).

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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Reorganization - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Sep. 30, 2015	Sep. 30, 2015	Mar. 31, 2015
Restructuring Cost And Reserve [Line Items]
Percentage of workforce reduction	2.00%			4.00%
Severance costs	$ 1.0		$ 3.2
Subsidiary Liquidation [Member]
Restructuring Cost And Reserve [Line Items]
Reorganization costs			$ 0.3
Products Group Reorganization [Member]
Restructuring Cost And Reserve [Line Items]
Severance costs		$ 0.7
Products Group Reorganization [Member] \| Software Development Project [Member]
Restructuring Cost And Reserve [Line Items]
Expenses to write off		$ 0.2