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
	Feb. 28, 2014	Feb. 28, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings (in shares)	14,085	15,422
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings (in shares)	1,471	1,868
Stock awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings (in shares)	749	1,689
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