Employee Benefit and Retirement Plans-Components of Other Postretirement Benefit Expenses (Details) - Other postretirement benefits [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	May 31, 2016	May 31, 2015	May 31, 2016	May 31, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 0.6	$ 0.8	$ 1.4	$ 1.6
Interest costs	1.0	0.9	1.9	1.8
Defined Benefit Plan, Amortization of Gains (Losses)	(0.1)	0.0	0.0	0.0
Total other postretirement expense	$ 1.7	$ 1.7	$ 3.3	$ 3.4