Employee Benefit Plans Employee Benefit Plans (Schedule of Changes in Projected Benefit Obligations - Health Care Plans) (Details) - USD ($) $ in Millions	12 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Curtailments	$ 0.0	$ (0.5)
Change in Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	141.0
Fair Value of Plan Assets at End of Year	136.3	141.0
Other Postretirement Benefit Plans, Defined Benefit [Member]
Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	7.6	7.1
Interest cost	0.2	0.3	$ 0.3
Actuarial loss (gain)	(0.3)	0.8
Benefits paid net of retiree contributions	(0.6)	(0.6)
Benefit Obligation at End of Year	6.9	7.6	$ 7.1
Change in Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	0.0
Employer contributions	0.6	0.6
Benefits paid net of retiree contributions	(0.6)	(0.6)
Fair Value of Plan Assets at End of Year	0.0	0.0
Funded Status at November 30	(6.9)	(7.6)
Amounts Recognized in the Consolidated Balance Sheets
Current liability	(0.6)	(0.7)
Non-current liability	(6.3)	(6.9)
Net Amount Recognized	$ (6.9)	$ (7.6)