Loss Per Share of Common Stock - Reconciliation of Numerator and Denominator Used to Calculate Basic and Diluted (Loss) Per Share (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Feb. 28, 2014	Feb. 28, 2013
Numerator for Basic and Diluted EPS:
Loss from continuing operations	$ (2.1)	$ (14.1)
Income from discontinued operations, net of income taxes		0.1
Net income (loss)	$ (2.1)	$ (14.0)
Denominator:
Basic and Diluted weighted average shares	59.9	59.3
Basic and diluted:
Loss per share from continuing operations	$ (0.03)	$ (0.24)
Income per share from discontinued operations, net of income taxes
Net loss per share	$ (0.03)	$ (0.24)