Exit Costs - Restructuring and Impairment Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2016	Nov. 30, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs	$ 1,854	$ 73,094
Compensation and Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs	320	38,249
Technology and Communications [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs	1,234	30,992
Professional Services [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs	0	2,508
Other Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs	300	1,345
Severance Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs	279	30,327
Accelerated Amortization of Restricted Stock and Restricted Cash Awards [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs	41	7,922
Accelerated Amortization of Capitalized Software [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs	0	19,745
Contract Termination Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs	1,234	11,247
Other Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs	$ 300	$ 3,853