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SHARE-BASED AWARDS AND OPTIONS (Tables)
12 Months Ended
Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]  
Schedule of Share-based Compensation Expense
The following table summarizes share-based compensation expense and the related income tax benefit recognized for our share-based awards and stock options:

Years Ended December 31,
202220212020
(in thousands)
Share-based compensation expense$163,261 $180,779 $148,792 
Income tax benefit$38,059 $42,870 $33,530 
Schedule of Changes in Unvested Restricted Stock Awards and Performance Units
The following table summarizes the changes in unvested restricted stock awards and performance units for the years ended December 31, 2022, 2021 and 2020:

SharesWeighted-Average
Grant-Date
Fair Value
(in thousands)
Unvested at December 31, 20191,844 $149.96
Granted607 191.20
Vested(835)128.91
Forfeited(70)168.40
Unvested at December 31, 20201,546 176.71
Granted1,465 192.19
Vested(1,263)154.06
Forfeited(108)181.61
Unvested at December 31, 20211,640 184.90
Granted1,496 137.51
Vested(756)170.79
Forfeited(235)164.06
Unvested at December 31, 20222,145 $159.04
Schedule of Changes in Stock Option Activity
The following table summarizes changes in stock option activity for the years ended December 31, 2022, 2021 and 2020: 

OptionsWeighted-Average Exercise PriceWeighted-Average Remaining Contractual TermAggregate Intrinsic Value
(in thousands)(years)(in millions)
Outstanding at December 31, 20191,755 $74.066.5$190.3
Granted124 200.42
Forfeited(3)112.85
Exercised(623)59.7885.8 
Outstanding at December 31, 20201,253 93.666.3152.6 
Granted112 196.06
Forfeited(1)113.48
Exercised(192)68.4224.1 
Outstanding at December 31, 20211,172 107.445.847.4
Granted154 $136.02
Forfeited(89)$147.65
Exercised(98)$65.695.5
Outstanding at December 31, 20221,139 $111.755.4$17.3
Options vested and exercisable at December 31, 2022907 $98.764.5$17.3
Schedule of Fair Valuation Assumptions Fair value was estimated on the date of grant using the Black-Scholes valuation model with the following weighted-average assumptions:
Years Ended December 31,
202220212020
Risk-free interest rate1.87 %0.59 %1.24 %
Expected volatility40 %40 %30 %
Dividend yield0.56 %0.44 %0.39 %
Expected term (years)555