Employee Benefit Plans Employee Benefit Plans (Schedule of Expected Benefit Payments - 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]
Operating Loss Carryforwards, Expiration Date	2017
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]
Net gain amortized in Accumulated Other Comprehensive Loss	$ (3.2)	$ 12.8	$ (29.5)
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]
2017	0.6
2018	0.6
2019	0.6
2020	0.6
2021	0.6
Thereafter	2.4
Non-cash retiree medical health care income	0.8
Net gain amortized in Accumulated Other Comprehensive Loss	$ 1.0