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Stock Benefit Plans and Stock-Based Compensation (Narrative) (Details) (USD $)
12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 36 Months Ended 12 Months Ended
Nov. 30, 2013
Nov. 30, 2012
Nov. 30, 2011
Nov. 30, 2013
2008 Equity Incentive Plan
Nov. 30, 2013
1996 Stock Option Plan
Nov. 30, 2013
1998 Plan Prior To December 1, 2005
Nov. 30, 2013
1998 Plan On Or After December 1, 2005
Nov. 30, 2013
1998 Director Option Plan
Nov. 30, 2013
2008 Employee Stock Purchase Plan
Nov. 30, 2013
2009 Deferred Compensation Plan
Nov. 30, 2013
Service Based Stock Awards
Minimum
Nov. 30, 2013
Service Based Stock Awards
Maximum
Nov. 30, 2013
Performance Based Restricted Stock Units
Nov. 30, 2013
Performance Based Restricted Stock Units
Nov. 30, 2012
Performance Based Restricted Stock Units
Nov. 30, 2013
Performance Based Restricted Stock Units
Condition For Fiscal Year 2012
Nov. 30, 2013
Inducement Award
2013 Inducement Award Plan
Apr. 09, 2013
Inducement Award
2013 Inducement Award Plan
Nov. 30, 2013
Restricted Inducement Awards
2013 Inducement Award Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Number of shares available for grant or issuance       2,700,000           980,000                  
Number of shares underlying stock options outstanding 8,326,000 12,199,000   8,600,000 5,100,000     700,000                      
Award vesting period         4 years                            
Contractual term from date of grant           10 years 7 years                        
Number of shares underlying stock awards 7,829,000 9,420,000                     2,783,000 2,783,000 4,770,000       500,000
Non-GAAP earnings per share minimum                               $ 1.00      
Cumulative Non-GAAP earnings per share, minimum                               $ 2.40      
Share based compensation performance period                               3 years      
Shares granted 3,192,000                       382,000 1,400,000          
Shares reserved for future issuance                 8,300,000               500,000    
Shares issued during period                 300,000                    
Minimum rate paid on fair market value of common stock                 85.00%                    
Maximum contribution paid by participants                 $ 2,500                    
Total intrinsic value of stock options exercised 18,900,000 73,700,000 136,800,000                                
Fair value of stock options vested and expensed 38,200,000 40,700,000 32,200,000                                
Total tax benefits realized from exercise of stock options and vesting of stock awards 14,300,000 24,600,000 8,600,000                                
Excess tax benefits from stock-based compensation 18,539,000 30,311,000 41,950,000                                
Total fair value of shares vested pursuant to stock awards 52,500,000 24,300,000 18,900,000                                
Stock-based compensation 53,635,000 61,146,000 48,867,000                                
Deferred tax benefit on stock-based compensation expenses 15,400,000 20,500,000 16,500,000                                
Unamortized stock-based compensation 86,900,000                                    
Weighted average remaining recognition period 1 year 7 months 30 days                                    
Estimated vesting or requisite service period (in years) of the share awards                     3 years 4 years              
Stock based compensation expense reversal                         $ 3,100,000            
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized                                   1,000,000