SEGMENT INFORMATION - Summary of Revenue by Geographic Region (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Aug. 31, 2013	Aug. 31, 2012	Aug. 31, 2013	Aug. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	$ 270,859	$ 255,021	$ 754,495	$ 728,086
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	147,170	129,001	395,274	358,193
Other Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	10,802	17,177	32,743	36,563
Total Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	157,972	146,178	428,017	394,756
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	26,973	19,640	67,056	65,974
Other EMEA
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	59,995	63,037	182,860	190,098
Total EMEA
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	86,968	82,677	249,916	256,072
APJ
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	$ 25,919	$ 26,166	$ 76,562	$ 77,258