Financial Instruments- Impact of Fair Value Hedges on Other Comprehensive Income, Accumulated Other Comprehensive Income and Income Statement (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	May. 31, 2015	May. 31, 2014	May. 31, 2015	May. 31, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Interest expense	$ 13.0	$ 12.5	$ 25.9	$ 24.9
Interest Expense [Member] | Fair Value Hedging [Member] | Interest rate contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest expense	$ 1.3	$ 1.3	$ 2.5	$ 2.5