SEGMENT INFORMATION - Summary of Revenue by Geographic Region (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Feb. 28, 2014	Feb. 28, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	$ 252,879	$ 237,790
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	127,572	117,654
Other Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	16,726	9,761
Total Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	144,298	127,415
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	19,933	21,988
Other EMEA
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	65,932	63,435
Total EMEA
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	85,865	85,423
APJ
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	$ 22,716	$ 24,952