Employee Benefit Plans Employee Benefit Plans (Schedule of Assumptions Used - Health Care Plans) (Details) - Other Postretirement Benefit Plans, Defined Benefit [Member]	12 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Discount rate used for liability determination	4.00%	4.15%	3.85%
Discount rate used for expense determination	4.15%	3.85%	4.39%
Current trend rate for health care costs	8.00%	8.50%	7.40%
Ultimate trend rate for health care costs	4.50%	4.50%	4.50%
Defined Benefit Plan, Year that Rate Reaches Ultimate Trend Rate	2037	2037	2028