Retirement Benefits, (As Restated for fiscal 2014 and 2013) - Summary of Company's Plan Assets, Benefit Obligations, and Funded Status (Footnote) (Details) - USD ($) $ in Thousands		12 Months Ended
		Nov. 30, 2015	Nov. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Pension benefit obligation, non-qualified plan		$ 19,200	$ 20,400
Medicare Part D Subsidy [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefits paid for medical and life benefits			200
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefits paid for medical and life benefits	[1]	136,100	$ 133,700
Pension plan, lump sum present value, less than		$ 25

[1] Benefits paid for medical and life insurance benefits are net of the Medicare Part D Subsidy of $0.2 million received in fiscal 2015 and 2014.