Employee Benefit and Retirement Plans - Components of Other Postretirement Benefit Expenses (Details) - Other Postretirement Benefit Plan - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	May 31, 2019	May 31, 2018	May 31, 2019	May 31, 2018
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 0.5	$ 0.6	$ 1.0	$ 1.2
Interest costs	0.6	0.6	1.3	1.2
Amortization of prior service costs	(2.1)	(2.1)	(4.3)	(4.3)
Defined Benefit Plan, Amortization of Gain (Loss)	0.2	0.0	0.4	0.0
Total other postretirement expense	$ (1.2)	$ (0.9)	$ (2.4)	$ (1.9)