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Share-Based Compensation Plans - Restricted Stock Unit Activity (Details) - $ / shares
shares in Thousands
12 Months Ended
Feb. 28, 2023
Feb. 28, 2022
Feb. 28, 2021
Weighted Average Grant Date Fair Value (per share)      
Target achievement as a percentage     150.00%
Restricted Stock Awards and Restricted Stock Units      
Number of Service Condition Awards      
Forfeited (in shares) (27)    
Weighted Average Grant Date Fair Value (per share)      
Forfeited (in dollars per share) $ 202.57    
Performance Shares      
Number of Service Condition Awards      
Outstanding at the beginning of the period (in shares) 451    
Granted (in shares) 87    
Vested (in shares) (184)    
Forfeited (in shares) (60)    
Outstanding at the end of the period (in shares) 294 451  
Weighted Average Grant Date Fair Value (per share)      
Outstanding at the beginning of the period (in dollars per share) $ 148.66    
Granted (in dollars per share) 204.20 $ 216.20 $ 170.27
Vested (in dollars per share) 112.17    
Forfeited (in dollars per share) 142.61    
Outstanding at the end of the period (in dollars per share) $ 189.21 $ 148.66  
Market Condition Awards      
Number of Service Condition Awards      
Outstanding at the beginning of the period (in shares) 68    
Granted (in shares) 87    
Forfeited (in shares) (13)    
Outstanding at the end of the period (in shares) 142 68  
Weighted Average Grant Date Fair Value (per share)      
Outstanding at the beginning of the period (in dollars per share) $ 156.08    
Granted (in dollars per share) 152.91 $ 156.08  
Forfeited (in dollars per share) 154.13    
Outstanding at the end of the period (in dollars per share) $ 154.32 $ 156.08  
Target achievement as a percentage 100.00%    
Market Condition Awards | Maximum      
Weighted Average Grant Date Fair Value (per share)      
Target achievement as a percentage 200.00%    
2020 Performance Awards      
Number of Service Condition Awards      
Forfeited (in shares) (37)    
2020 Performance Awards | Maximum      
Weighted Average Grant Date Fair Value (per share)      
Target percentage for performance stock awards 200.00%    
2008 Stock Incentive Plan | Restricted Stock Awards and Restricted Stock Units      
Number of Service Condition Awards      
Outstanding at the beginning of the period (in shares) 138    
Granted (in shares) 52    
Vested (in shares) (52)    
Outstanding at the end of the period (in shares) 111 138  
Weighted Average Grant Date Fair Value (per share)      
Outstanding at the beginning of the period (in dollars per share) $ 188.11    
Granted (in dollars per share) 195.90    
Vested (in dollars per share) 164.84    
Outstanding at the end of the period (in dollars per share) $ 199.29 $ 188.11  
2008 Stock Incentive Plan | Market Condition Awards      
Number of Service Condition Awards      
Vested (in shares) 0    
Weighted Average Grant Date Fair Value (per share)      
Vested (in dollars per share) $ 0