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Compensation Plans - Stock-Based Compensation Expense (Details) - USD ($)
shares in Thousands, $ in Thousands
11 Months Ended 12 Months Ended
Nov. 30, 2019
Nov. 30, 2018
Nov. 30, 2019
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation   $ 48,249 $ 49,848 $ 48,384
Tax benefit for issuance of share-based awards   $ 12,200 12,900 $ 17,300
Total unrecognized compensation costs related to nonvested share-based compensation plans $ 80,400   $ 80,400  
Total unrecognized compensation costs related to nonvested share-based compensation plans, period for recognition 3 years      
Other shares issuable (in shares) 992   992  
Potential maximum increase to common shares outstanding from restricted stock and other shares (in shares) 23,122   23,122  
Restricted Stock with Future Service Required        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Non-option equity instruments, outstanding (in shares) 2,008   2,008  
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) 6,463   6,463  
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) 15,667   15,667