Financial Instruments-Additional Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
	Aug. 31, 2013	Aug. 31, 2013	Aug. 31, 2012
Derivative [Line Items]
Notes Payable, Noncurrent	$ 250	$ 250
Maximum time frame for foreign exchange contracts, months	15 months
Amount of accumulated other comprehensive income expected to be reclassified as an increase to earnings in next 12 months	0.8	0.8
Debt Instrument, Interest Rate, Stated Percentage	3.50%	3.50%
Long-term debt borrowings	246.2	246.2	0
Debt, Weighted Average Interest Rate	3.30%	3.30%
Interest Rate Swap [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	175.0	175.0
Unrealized Gain (Loss) on Price Risk Cash Flow Derivatives, before Tax	9
Interest Rate Swap [Member] | Treasury Lock [Member]
Derivative [Line Items]
Interest rate contracts, Notional Amount	$ 175	$ 175