Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified		3 Months Ended
Feb. 28, 2014	Feb. 28, 2014 Foreign Tax Authority [Member]	Feb. 28, 2013 Domestic Tax Authority [Member]
Income Tax Examination [Line Items]
Decrease resulting from prior period tax positions		$ 5.8
Change related to prior year adjustments		2.2
Change in enacted tax rate		3.7
Change in deferred tax assets valuation allowance		0.6
Recognition of research tax credit			1.2
Deposits Assets	$ 18.8

Carrying value of amounts transferred to third parties for security purposes that are expected to be returned or applied towards payment in the future.

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-Name Accounting Standards Codification

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates.

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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