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STOCK-BASED COMPENSATION (Tables)
 12 Months Ended
Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]  
Schedule of Components of Stock-Based Compensation Expenses The following costs related to the Company’s stock compensation plans were included in the consolidated statements of income:
For the Years Ended December 31,
202220212020
Cost of revenues (exclusive of depreciation and amortization)$47,470 $51,580 $32,785 
Selling, general and administrative expenses
52,439 60,075 42,453 
Total$99,909 $111,655 $75,238 
Schedule of Stock Option Activity Stock option activity under the Company’s long-term incentive plans is set forth below:
 Number of
Options		Weighted Average
Exercise Price 		Aggregate
Intrinsic Value 		Weighted Average
Remaining Contractual Term (in years)
Options outstanding as of January 1, 20203,323 $50.85 $536,015 
Options granted158 $187.76 
Options exercised(700)$37.79 
Options forfeited(9)$119.30 
Options outstanding as of December 31, 20202,772 $61.71 $822,152 
Options granted94 $410.03 
Options exercised(536)$49.13 
Options forfeited(12)$248.74 
Options outstanding as of December 31, 20212,318 $77.79 $1,369,132 
Options granted133 $277.85 
Options exercised(514)$44.02 
Options forfeited(11)$350.19 
Options expired(3)$128.11 
Options outstanding as of December 31, 20221,923 $98.92 $447,503 3.4
Options vested and exercisable as of December 31, 20221,627 $67.51 $425,184 2.6
Options expected to vest as of December 31, 2022279 $270.39 $21,357 8.2
Schedule of Black-Scholes Option Valuation Model Assumptions The fair value of each option award is estimated on the date of grant using the Black-Scholes option valuation model. The model incorporated the following weighted average assumptions:
For the Years Ended December 31,
202220212020
Expected volatility46.7 %35.3 %36.9 %
Expected term (in years)6.246.246.25
Risk-free interest rate2.6 %1.2 %0.5 %
Expected dividends— %— %— %
Schedule of Service-Based Awards Activity The table below summarizes activity related to the Company’s equity-classified and liability-classified service-based awards for the years ended December 31, 2022, 2021 and 2020:
Equity-Classified
Restricted Stock
Equity-Classified
Equity-Settled
Restricted Stock Units
Liability-Classified
Cash-Settled
Restricted Stock Units
 Number of
Shares
Weighted Average Grant Date
Fair Value Per Share 		Number of
Shares
Weighted Average Grant Date
Fair Value Per Share 		Number of
Shares
Weighted Average Grant Date
Fair Value Per Share 
Unvested service-based awards outstanding as of January 1, 202010 $162.96 759 $122.48 242 $105.40 
Awards granted— $— 294 $204.57 60 $181.77 
Awards modified— $— (1)$122.55 — $— 
Awards vested(1)$63.10 (317)$108.87 (122)$91.39 
Awards forfeited— $— (49)$148.11 (5)$113.94 
Unvested service-based awards outstanding as of December 31, 20209 $167.18 686 $162.15 175 $141.16 
Awards granted— $— 238 $429.41 27 $394.24 
Awards modified— $— — $— — $— 
Awards vested— $— (308)$139.83 (86)$118.05 
Awards forfeited— $— (40)$264.48 (4)$210.26 
Unvested service-based awards outstanding as of December 31, 20219 $167.18 576 $277.38 112 $217.28 
Awards granted— $— 655 $287.13 51 $269.60 
Awards modified— $— (3)$387.74 3 $220.00 
Awards vested(9)$167.18 (244)$235.96 (56)$184.96 
Awards forfeited— $— (68)$328.81 (11)$260.59 
Unvested service-based awards outstanding as of December 31, 2022— $— 916 $291.19 99 $257.74 
Schedule of Fair Value of Service-Based Awards Vested
The fair value of vested service-based awards (measured at the vesting date) for the years ended December 31, 2022, 2021 and 2020 was as follows:
 For the Years Ended December 31,
 202220212020
Equity-classified equity-settled
Restricted stock$3,990 $— $101 
Restricted stock units69,510 129,527 60,042 
Liability-classified cash-settled
Restricted stock units16,238 33,947 22,014 
Total fair value of vested service-based awards$89,738 $163,474 $82,157 
Schedule of Performance-Based Awards Activity The table below summarizes activity related to the Company’s performance-based awards for the years ended December 31, 2022, 2021 and 2020:
Equity-Classified
Equity-Settled
Restricted Stock
Equity-Classified
Equity-Settled
Restricted Stock Units
 Number of
Shares
Weighted Average Grant Date
Fair Value Per Share 		Number of
Shares
Weighted Average Grant Date
Fair Value Per Share 
Unvested performance-based awards outstanding as of January 1, 20209 $165.87 — $— 
Awards granted— $— 31 $210.44 
Awards vested— $— (10)$177.81 
Unvested performance-based awards outstanding as of December 31, 20209 $165.87 21 $227.16 
Awards granted— $— 8 $574.98 
Awards vested— $— (4)$177.81 
Awards forfeited— $— (2)$334.78 
Unvested performance-based awards outstanding as of December 31, 20219 $165.87 23 $339.69 
Awards granted— $— 6 $418.26 
Awards vested— $— (9)$238.96 
Awards forfeited— $— (5)$377.87 
Unvested performance-based awards outstanding as of December 31, 20229 $165.87 15 $412.60 
Schedule of Fair Value of Performance-Based Awards Vested The fair value of vested performance-based awards (measured at the vesting date) for the years ended December 31, 2022, 2021 and 2020 was as follows:
 For the Years Ended December 31,
 202220212020
Equity-classified equity-settled
Restricted stock units$2,914 $2,215 $3,282 
Total fair value of vested performance-based awards$2,914 $2,215 $3,282 
Schedule of Assumptions Used The Black-Scholes model relies on a number of key assumptions to calculate estimated fair values. The model incorporated the following weighted average assumptions for the years ended December 31, 2022 and 2021:
For the Years Ended December 31,
20222021
Expected volatility86.8 %23.1 %
Expected term (in years)0.500.50
Risk-free interest rate3.0 %0.1 %
Expected dividends— %— %