Employee Benefit Plans Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	May 31, 2019	May 31, 2018	May 31, 2019	May 31, 2018
Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service costs	$ 0.7	$ 0.7	$ 1.4	$ 1.3
Interest costs	2.6	2.2	5.1	4.5
Expected return on plan assets	(3.9)	(3.9)	(7.8)	(7.8)
Amortization of net actuarial (gain) loss	1.2	1.3	2.3	2.7
Net periodic cost (benefit)	0.6	0.3	1.0	0.7
Postretirement Health Coverage [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service costs	0.0	0.0	0.0	0.0
Interest costs	0.0	0.0	0.1	0.1
Expected return on plan assets	0.0	0.0	0.0	0.0
Amortization of net actuarial (gain) loss	(0.3)	(0.2)	(0.6)	(0.5)
Net periodic cost (benefit)	$ (0.3)	$ (0.2)	$ (0.5)	$ (0.4)