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STOCK-BASED COMPENSATION (Tables)
 6 Months Ended
Jun. 30, 2024
Share-Based Payment Arrangement, Noncash Expense [Abstract]  
Stock-Based Compensation Cost and Associated Tax Benefit
Presented below is a summary of the stock-based compensation cost and associated tax benefit included in the accompanying consolidated statements of operations:
Three Months Ended June 30,
Six Months Ended June 30,
2024202320242023
Stock-based compensation cost$56 $50 $109 $97 
Tax benefit$12 $12 $24 $22 
Weighted Average Assumptions used in Determining Fair Value for Options Granted
The following weighted average assumptions were used in determining the fair value using the Black-Scholes option-pricing model for options granted in 2024:
Expected dividend yield0.91 %
Expected stock volatility28 %
Risk-free interest rate4.34 %
Expected holding period5.9 years
Stock Option Exercises and Restricted Stock Vesting
The following table summarizes information relating to stock option exercises and restricted stock vesting:
Six Months Ended
June 30,
2024
2023
Exercise of stock options:
Proceeds from stock option exercises$34 $21 
Aggregate intrinsic value$43 $44 
Tax benefit realized upon exercise$7 $10 
Number of shares exercised
0.2 0.2 
Vesting of restricted stock:
Fair value of shares vested$176 $147 
Tax benefit realized upon vesting$43 $34 
Number of shares vested0.5 0.5 
Vesting of performance-based restricted stock:
Fair value of shares vested$40 $24 
Tax benefit realized upon vesting$9 $3 
Number of shares vested0.1 0.1