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Summary Of Significant Accounting Policies (Schedule Of Nonvested Shares Activity) (Details) - Nonvested shares - $ / shares
12 Months Ended
Nov. 30, 2022
Nov. 30, 2021
Nov. 30, 2020
Shares      
Beginning balance (in shares) 3,163,790    
Grants (in shares) 1,697,986    
Vested (in shares) (1,581,744) (1,800,000) (1,400,000)
Forfeited (in shares) (127,886)    
Ending balance (in shares) 3,152,146 3,163,790  
Weighted Average Grant Date Fair Value      
Beginning balance (in USD per share) $ 66.07    
Grants (in USD per share) 88.92 $ 80.95 $ 60.10
Vested (in USD per share) 61.39    
Forfeited (in USD per share) 74.38    
Ending balance (in USD per share) $ 80.39 $ 66.07