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Employee Benefit Plans Components of Net Periodic Benefit Cost (Details) - USD ($)
$ in Millions
3 Months Ended
Feb. 28, 2019
Feb. 28, 2018
Pension Plan [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Service costs $ 0.7 $ 0.6
Interest costs 2.5 2.3
Expected return on plan assets (3.9) (3.9)
Amortization of net actuarial (gain) loss 1.1 1.3
Net periodic cost (benefit) 0.4 0.3
Postretirement Health Coverage [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Service costs 0.0 0.0
Interest costs 0.1 0.0
Expected return on plan assets 0.0 0.0
Amortization of net actuarial (gain) loss (0.3) (0.2)
Net periodic cost (benefit) $ (0.2) $ (0.2)