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SHARE-BASED COMPENSATION AND BENEFIT PLANS (Summary of Restricted Stock) (Details) - Restricted stock [Member] - $ / shares
shares in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share-Based Compensation and Benefit Plans      
Restricted stock granted during period, weighted-average grant date fair value $ 509.24 $ 412.67 $ 355.91
Employee [Member]      
Share-Based Compensation and Benefit Plans      
Non-vested restricted stock at beginning of the year, weighted-average grant date fair value 358.58    
Restricted stock granted during period, weighted-average grant date fair value 451.84    
Restricted stock vested during the period, weighted-average grant date fair value 430.04    
Restricted stock forfeited during the period, weighted-average grant date fair value 0    
Non-vested restricted stock at the end of the year, weighted-average grant date fair value $ 419.47 $ 358.58  
Employee [Member] | Performance shares [Member]      
Share-Based Compensation and Benefit Plans      
Non-vested restricted stock beginning balance, shares 4    
Restricted stock granted during the period, shares 1    
Restricted stock vested during the period, shares (2)    
Restricted stock forfeited during the period, shares 0    
Non-vested restricted stock ending balance, shares 3 4  
Shares withheld to cover employees' taxes upon vesting 1    
Director [Member]      
Share-Based Compensation and Benefit Plans      
Non-vested restricted stock at beginning of the year, weighted-average grant date fair value $ 371.46    
Restricted stock granted during period, weighted-average grant date fair value 559.53    
Restricted stock vested during the period, weighted-average grant date fair value 556.74    
Restricted stock forfeited during the period, weighted-average grant date fair value 0    
Non-vested restricted stock at the end of the year, weighted-average grant date fair value $ 508.45 $ 371.46  
Director [Member] | Performance shares [Member]      
Share-Based Compensation and Benefit Plans      
Non-vested restricted stock beginning balance, shares 4    
Restricted stock granted during the period, shares 1    
Restricted stock vested during the period, shares (3)    
Restricted stock forfeited during the period, shares 0    
Non-vested restricted stock ending balance, shares 2 4