Exit Costs - Restructuring Reserve (Details) $ in Thousands	9 Months Ended
	Aug. 31, 2015 USD ($)
Restructuring Reserve [Roll Forward]
Expenses	$ 61,843
Severance Costs [Member]
Restructuring Reserve [Roll Forward]
Balance at February 28, 2015	0
Expenses	26,932
Payments	(13,770)
Liability at August 31, 2015	13,162
Other Costs [Member]
Restructuring Reserve [Roll Forward]
Balance at February 28, 2015	0
Expenses	2,735
Payments	(2,507)
Liability at August 31, 2015	228
Contract Termination Costs [Member]
Restructuring Reserve [Roll Forward]
Balance at February 28, 2015	0
Expenses	11,216
Payments	(11,213)
Liability at August 31, 2015	3
Restructuring Costs [Member]
Restructuring Reserve [Roll Forward]
Balance at February 28, 2015	0
Expenses	40,883
Payments	(27,490)
Liability at August 31, 2015	13,393
Accelerated Amortization of Restricted Stock and Restricted Cash Awards [Member]
Restructuring Reserve [Roll Forward]
Expenses	6,902
Accelerated Amortization of Capitalized Software [Member]
Restructuring Reserve [Roll Forward]
Expenses	12,979
Impairments [Member]
Restructuring Reserve [Roll Forward]
Expenses	$ 1,079