Employee Benefit Plans - Schedule of Assumptions Used for OPEB (Details) - Other Postretirement Benefit Plans, Defined Benefit [Member]	12 Months Ended
	Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2017
Defined Benefit Plan Disclosure [Line Items]
Discount rate used for liability determination	3.00%	4.41%	3.62%
Discount rate used for expense determination	4.41%	3.62%	4.00%
Current health care cost trend rate assumed for the next year	6.60%	7.10%	7.60%
Ultimate trend rate for health care costs	4.50%	4.50%	4.50%
Year reached	2037	2037	2037