Discontinued Operations - Summarized Financial Information for Discontinued Operations (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2011
Discontinued Operations And Disposal Groups [Abstract]
Net sales
(Loss) income before income taxes	(0.9)	2.6
Income tax benefit	1.1	0.5
Income from discontinued operations	$ 0.2	$ 3.1

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.

+ References+ Details

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.

+ References+ Details

- 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.

+ References+ Details