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Derivative Instruments (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2011
Forward Contracts [Member]
Derivative [Line Items]
Maximum maturity period, foreign currency derivative	90 days
Gains (losses) on foreign currency option contracts	$ 1.1	$ (0.2)	$ (1.2)
Options Held [Member]
Derivative [Line Items]
Maximum maturity period, foreign currency derivative	1 year		1 year
Gains (losses) on foreign currency option contracts			$ (0.5)

The amount of net gains and losses recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments.

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