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SHARE-BASED COMPENSATION PLANS (Details) - USD ($)
 1 Months Ended 12 Months Ended
Jun. 30, 2016
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Share Options        
Assumptions used for estimating the fair value of share options        
Risk-free interest rate (as a percent)   1.50% 0.60% 1.90%
Expected dividend yield (as a percent)   3.70% 3.80% 3.90%
Volatility (as a percent)   25.00% 25.00% 20.00%
Weighted average expected life of the options   6 years 6 years 6 years
Weighted average grant date fair value of options granted per share (in dollars per share)   $ 8.83 $ 4.62 $ 3.66
Term   10 years 10 years 10 years
Share options, additional general disclosures        
Compensation expense recognized (in dollars)   $ 2,500,000 $ 2,300,000 $ 2,000,000.0
Vesting period   3 years    
Unrecognized compensation cost   $ 2,800,000    
Unrecognized compensation cost recorded, period   1 year 8 months 12 days    
Number of Shares Under Option        
Balance at the beginning of the period (in shares)   2,263,804    
Options granted (in shares)   324,840    
Options exercised (in shares)   (51,606)    
Balance at the end of the period (in shares)   2,537,038 2,263,804  
Vested or expected to vest at the end of the period (in shares)   2,537,038    
Exercisable at the end of the period (in shares)   1,636,544    
Weighted Average Exercise Price        
Balance at the beginning of the period (in dollars per share)   $ 29.63    
Options granted (in dollars per share)   56.91    
Options exercised (in dollars per share)   30.80    
Balance at the end of the period (in dollars per share)   33.10 $ 29.63  
Vested or expected to vest at the end of the period (in dollars per share)   33.10    
Exercisable at the end of the period (in dollars per share)   $ 28.42    
Weighted Average Remaining Contractual Term        
Balance at the end of the period   6 years 2 months 15 days 6 years 9 months 25 days  
Options granted   9 years 3 days    
Options exercised   7 years 3 months 14 days    
Vested or expected to vest at the end of the period   6 years 2 months 15 days    
Exercisable at the end of the period   5 years 1 month 20 days    
Aggregate intrinsic value        
Options, exercisable (in dollars)   $ 19,400,000    
Options, vested or expected to vest and exercisable (in dollars)   23,600,000    
Options exercised (in dollars)   $ 1,000,000.0 $ 10,600,000 $ 900,000
Restricted Shares | Minimum        
Share options, additional general disclosures        
Vesting period   3 years    
Restricted Shares | Maximum        
Share options, additional general disclosures        
Vesting period   5 years    
Performance Shares        
Assumptions used for estimating the fair value of share options        
Term   3 years    
Restricted Stock and Performance Shares        
Assumptions used for estimating the fair value of share options        
Risk-free interest rate (as a percent)   1.00% 0.20% 1.70%
Volatility (as a percent)   28.00% 28.00% 19.00%
Share options, additional general disclosures        
Compensation expense recognized (in dollars)   $ 6,500,000 $ 5,800,000 $ 5,200,000
Unrecognized compensation cost   $ 7,600,000    
Unrecognized compensation cost recorded, period   2 years    
Number of Non-Vested Restricted Shares        
Non-vested at the beginning of the period (in shares)   387,701    
Granted (in shares)   126,304    
Vested (in shares)   (164,228)    
Forfeited (in shares)   (8,825)    
Non-vested at the end of the period (in shares)   340,952 387,701  
Restricted Shares & Performance Units        
Weighted average fair value of restricted shares and performance units granted   $ 61.41 $ 39.37 $ 32.39
Total fair value of restricted shares and performance units vested   $ 5.6 $ 4.8 $ 6.0
Plan        
SHARE-BASED COMPENSATION PLANS        
Additional shares authorized 4,500,000      
Shares reserved for future issuance 991,117      
Shares available for future awards   1,941,786    
Percentage of shares that may not be subject to specific limitations   5.00%    
Maximum term of options   10 years    
Plan | Minimum        
Share options, additional general disclosures        
Vesting period   1 year    
Plan | Share Options        
Number of Shares Under Option        
Balance at the end of the period (in shares)   2,537,038    
Plan | Restricted Shares        
Number of Non-Vested Restricted Shares        
Non-vested at the end of the period (in shares)   340,952