Financial Instruments-Impact of Cash Flow Hedges on Other Comprehensive Income, Accumulated Other Comprehensive Income and Income Statement (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Aug. 31, 2012	Aug. 31, 2011	Aug. 31, 2012	Aug. 31, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) recognized in OCI	$ (1.5)	$ 1.0	$ (1.9)	$ (1.7)
Gain or (Loss) reclassified from AOCI	(0.2)	(1.4)	(0.3)	(3.7)
Interest rate contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) recognized in OCI	0	0.7	0	(0.2)
Interest rate contract [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) reclassified from AOCI	(0.3)	(0.3)	(1.0)	(1.0)
Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) recognized in OCI	(1.5)	0.3	(1.9)	(1.5)
Foreign Exchange Contract [Member] | Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) reclassified from AOCI	$ 0.1	$ (1.1)	$ 0.7	$ (2.7)