NET INCOME PER SHARE - Anti-Dilutive Effect of Shares Not Included in Computation of Diluted Net Income Per Share (Details) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	May 31, 2014	May 31, 2013	May 31, 2014	May 31, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings (in shares)	14,178	14,183	14,132	14,803
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings (in shares)	1,502	1,762	1,487	1,815
Stock awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings (in shares)	811	556	780	1,123
Convertible senior notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings (in shares)	11,865	11,865	11,865	11,865