Financial Instruments - Impact of Fair Value Hedges on Other Comprehensive Income, Accumulated Other Comprehensive Income and Income Statement (Details) - Fair Value Hedging - USD ($) $ in Millions	3 Months Ended
	Feb. 28, 2019	Feb. 28, 2018
Interest Expense | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Interest income (expense)	$ 0.2	$ 0.1
Other Income | Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Foreign Currency Transaction Gain (Loss), Realized	1.7	(2.2)
Other Income | Loans Payable
Derivative Instruments, Gain (Loss) [Line Items]
Foreign Currency Transaction Gain (Loss), Realized	$ (1.8)	$ 2.0