SEGMENT INFORMATION - Summary of Revenue by Geographic Region (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	$ 255,602	$ 270,859	$ 760,779	$ 754,495
Total Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	152,617	157,972	440,910	428,017
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	141,628	147,170	399,204	395,274
Other Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	10,989	10,802	41,706	32,743
Total EMEA
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	77,105	86,968	246,795	249,916
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	18,666	26,973	55,614	67,056
Other EMEA
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	58,439	59,995	191,181	182,860
APJ
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	$ 25,880	$ 25,919	$ 73,074	$ 76,562