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STOCK-BASED COMPENSATION (Tables)
3 Months Ended
Mar. 31, 2024
Share-Based Payment Arrangement [Abstract]  
Weighted-Average Assumptions and Fair Values Used of Performance Units Granted
The weighted-average assumptions used and the weighted-average fair values of the LTIP awards granted in 2024 and 2023 are as follows:
20242023
Risk-free interest rate4.45 %3.81 %
Expected volatility27.00 %30.30 %
Weighted-average fair value of units granted
$158.16 $200.01 
Share payout102.20 %107.80 %
Fair Value of Employee Stock Options Granted and Determined by Black-Scholes Valuation Model Assumptions
The fair value of each option granted is estimated using a Black-Scholes option pricing model. The weighted-average assumptions used and the weighted-average fair values of options granted in 2024 and 2023 are as follows:
20242023
Expected dividend yield3.96 %3.54 %
Risk-free interest rate4.25 %3.70 %
Expected life (in years)6.135.93
Expected volatility28.94 %28.31 %
Weighted-average fair value of options granted
$34.76 $41.08