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STOCK-BASED COMPENSATION (Tables)
 3 Months Ended
Mar. 31, 2024
Share-Based Payment Arrangement [Abstract]  
Activity of Stock Options
The following table summarizes the activity in stock options during the three months ended March 31, 2024:
Employee Stock OptionsNumber of SharesWeighted-average Exercise PriceAggregate
 Intrinsic Value (in millions)		Weighted-average Remaining Contractual Term
(in years)
Balance, December 31, 202325,523 $1,411$55 6.4
Exercised
(4,567)$1,411$9 
Balance, March 31, 202420,956 $1,411$46 6.1
Exercisable at March 31, 202420,956 $1,411$46 6.1
Activity of Restricted Stock Units and Performance Share Units
The following table summarizes the activity in restricted stock units and performance share units for employees and non-employee directors during the three months ended March 31, 2024: 
Restricted Stock UnitsPerformance Share Units
SharesWeighted-average Grant-date Fair ValueSharesWeighted-average Grant-date Fair Value
Unvested at December 31, 2023 (1)
291,404$2,404233,026$2,467
Granted (2)
133,817$3,50034,237$3,664
Vested(124,084)$2,323(75,562)$2,453
Performance shares adjustment (3)
3,740$3,770
Forfeited(3,498)$2,606(368)$2,381
Unvested at March 31, 2024297,639$2,928195,073$2,711
(1)    Excludes 4,399 performance share units awarded during the year ended December 31, 2022 for which the grant date under ASC 718, Compensation - Stock Compensation, was not established as of December 31, 2023. Among other conditions, for the grant date to be established, a mutual understanding is required to be reached between the Company and the employee of the key terms and conditions of the award, including the performance targets. The performance targets for each of the annual performance periods under the award are set at the beginning of the respective year.
(2)    Includes 4,399 performance share units awarded during the year ended December 31, 2022 for which the grant date under ASC 718 was established.
(3)    Probable outcome for performance-based awards is updated based upon changes in actual and forecasted operating results or expected achievement of performance goals, as applicable, and the impact of modifications.