Discontinued Operations - Summarized Financial Information for Discontinued Operations (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
May 31, 2014	May 31, 2013	May 31, 2014	May 31, 2013
Discontinued Operations And Disposal Groups [Abstract]
Net sales	$ 0	$ 0	$ 0	$ 0
Loss before income taxes	(1.4)	0	(1.4)	(0.1)
Income tax benefit (provision)	0.6	(0.1)	0.6	0.1
Net loss from discontinued operations	$ (0.8)	$ (0.1)	$ (0.8)	$ 0

Overall income (loss) from a disposal group that is classified as a component of the entity, before income tax, reported as a separate component of income before extraordinary items. Includes the following (before income tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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- Definition

Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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