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Compensation Plans (Details) - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Aug. 31, 2020
Aug. 31, 2019
Aug. 31, 2020
Aug. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation $ 8,900 $ 12,200 $ 29,554 $ 37,036
Tax benefit for issuance of share-based awards 2,300 $ 3,000 7,500 $ 9,300
Total unrecognized compensation costs related to nonvested share-based compensation plans $ 52,400   $ 52,400  
Total unrecognized compensation costs related to nonvested share-based compensation plans, period for recognition     2 years  
Other shares issuable (in shares) 1,105   1,105  
Potential maximum increase to common shares outstanding from restricted stock and other shares (in shares) 23,737   23,737  
Restricted cash awards, cost expected to be recognized $ 606,200   $ 606,200  
Restricted cash awards, cost expected to be recognized, period     3 years  
Sign-on and retention awards        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period for award granted     4 years  
Award amortization period     4 years  
Restricted stock with future service required        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Non-option equity instruments, outstanding (in shares) 1,749   1,749  
Restricted stock units with future service required        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Non-option equity instruments, outstanding (in shares) 4,183   4,183  
Restricted stock units with no future service required        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Non-option equity instruments, outstanding (in shares) 18,449   18,449