Employee Benefit Plans Employee Benefit Plans (Defined Contribution Plans) (Details) - USD ($) shares in Millions	12 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Mortality, Morbidity and Surrender Rate Assumption	1.6	18
Non-cash cost of plan	$ 2,500,000	$ 2,400,000	$ 2,800,000
Number of shares in plan	0.9	1.1
Pension Plan [Member] | Money Market Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Asset Value	$ 1.00