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STOCKHOLDERS' EQUITY - Assumptions Used in Fair Value Determination (Details)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Stock Options      
Weighted Average Assumptions [Abstract]      
Expected Volatility 24.00% 26.80% 30.10%
Expected Term (in years) 4 years 4 years 4 months 24 days 4 years 7 months 6 days
Risk-Free Interest Rate 2.50% 2.60% 1.80%
Dividend Yield 0.60% 0.60% 0.50%
Vesting period 3 years    
Performance Shares | Employee      
Weighted Average Assumptions [Abstract]      
Expected Volatility 24.00% 27.00% 32.00%
Risk-Free Interest Rate 2.50% 2.40% 1.50%
Dividend Yield 0.50% 0.50% 0.60%
Initial total shareholder return percentage (5.90%) (10.50%) 8.20%
Cliff vesting percentage 100.00%    
Vesting period 3 years    
Minimum | Restricted Stock | Employee      
Weighted Average Assumptions [Abstract]      
Vesting period 3 years    
Minimum | Restricted Stock | Non-employee Director      
Weighted Average Assumptions [Abstract]      
Vesting period 3 years    
Maximum | Restricted Stock | Employee      
Weighted Average Assumptions [Abstract]      
Vesting period 4 years    
Maximum | Restricted Stock | Non-employee Director      
Weighted Average Assumptions [Abstract]      
Vesting period 4 years