Employee Benefit and Stock Plans (Details 1) (USD $)	12 Months Ended
	Nov. 30, 2013	Nov. 30, 2012
$ 6.32 to $10.54
Stock options outstanding and stock options exercisable
Range of Exercise Price in dollars per share, Minimum	$ 6.32
Range of Exercise Price in dollars per share, Maximum	$ 10.54
Options Outstanding, Options	1,693,165
Options Outstanding, Weighted Average Exercise Price in dollars per share	$ 6.43
Options Outstanding, Weighted Average Remaining Contractual Life	7 years 8 months 31 days
Options Exercisable, Options	1,126,162
Options Exercisable, Weighted Average Exercise Price in dollars per share	$ 6.42
$10.55 to $14.96
Stock options outstanding and stock options exercisable
Range of Exercise Price in dollars per share, Minimum	$ 10.55
Range of Exercise Price in dollars per share, Maximum	$ 14.96
Options Outstanding, Options	1,968,424
Options Outstanding, Weighted Average Exercise Price in dollars per share	$ 12.09
Options Outstanding, Weighted Average Remaining Contractual Life	5 years 6 months 31 days
Options Exercisable, Options	1,968,424
Options Exercisable, Weighted Average Exercise Price in dollars per share	$ 12.09
$14.97 to $20.08
Stock options outstanding and stock options exercisable
Range of Exercise Price in dollars per share, Minimum	$ 14.97
Range of Exercise Price in dollars per share, Maximum	$ 20.08
Options Outstanding, Options	2,717,523
Options Outstanding, Weighted Average Exercise Price in dollars per share	$ 17.47
Options Outstanding, Weighted Average Remaining Contractual Life	6 years 2 months 1 day
Options Exercisable, Options	2,167,523
Options Exercisable, Weighted Average Exercise Price in dollars per share	$ 17.68
$20.09 to $33.92
Stock options outstanding and stock options exercisable
Range of Exercise Price in dollars per share, Minimum	$ 20.09
Range of Exercise Price in dollars per share, Maximum	$ 33.92
Options Outstanding, Options	2,019,721
Options Outstanding, Weighted Average Exercise Price in dollars per share	$ 27.36
Options Outstanding, Weighted Average Remaining Contractual Life	4 years 1 month 1 day
Options Exercisable, Options	2,019,721
Options Exercisable, Weighted Average Exercise Price in dollars per share	$ 27.36
$33.93 to $69.63
Stock options outstanding and stock options exercisable
Range of Exercise Price in dollars per share, Minimum	$ 33.93
Range of Exercise Price in dollars per share, Maximum	$ 69.63
Options Outstanding, Options	2,133,105
Options Outstanding, Weighted Average Exercise Price in dollars per share	$ 39.81
Options Outstanding, Weighted Average Remaining Contractual Life	4 years 4 months 31 days
Options Exercisable, Options	2,133,105
Options Exercisable, Weighted Average Exercise Price in dollars per share	$ 39.81
$ 6.32 to $69.63
Stock options outstanding and stock options exercisable
Range of Exercise Price in dollars per share, Minimum	$ 6.32
Range of Exercise Price in dollars per share, Maximum	$ 69.63
Options Outstanding, Options	10,531,938.000
Options Outstanding, Weighted Average Exercise Price in dollars per share	$ 21.11
Options Outstanding, Weighted Average Remaining Contractual Life	5 years 6 months 31 days
Options Exercisable, Options	9,414,935.000
Options Exercisable, Weighted Average Exercise Price in dollars per share	$ 22.26
Options Exercisable, Weighted Average Remaining Contractual Life		5 years 2 months 1 day