Assets Held for Sale - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Nov. 30, 2013	Nov. 30, 2012
Assets And Liabilities Disposed On Sale Of Business [Line Items]
Expense recorded as a part of unusual items
Estimated Costs to Divest [Member]
Assets And Liabilities Disposed On Sale Of Business [Line Items]
Expense recorded as a part of unusual items		3.6
Recorded benefit as part of unusual items	$ 3.6