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		9 Months Ended
	Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2019	Aug. 31, 2018
Interest Expense | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Interest income (expense)	$ 0.0	$ (0.1)	$ (0.3)	$ 0.1
Other Income | Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Foreign Currency Transaction Gain (Loss), Realized	(5.3)	0.5	(2.6)	(2.1)
Other Income | Loans Payable
Derivative Instruments, Gain (Loss) [Line Items]
Foreign Currency Transaction Gain (Loss), Realized	$ 5.2	$ (1.1)	$ 2.0	$ 1.1