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STOCK-BASED COMPENSATION (Tables)
 12 Months Ended
Dec. 31, 2021
Share-based Payment Arrangement [Abstract]  
Schedule of Changes in Outstanding Stock Options
Stock options outstanding at December 31, 2021 and changes during the year ended December 31, 2021 are as follows:
 December 31, 2021
 SharesWeighted
Average
Exercise
Price		Weighted
Average
Remaining
Contractual
Term (In Years)		Aggregate
Intrinsic
Value
 (Shares and intrinsic value in thousands)
Outstanding at January 1, 20217,425 $19.48   
Converted sub-equity options3 37.49 
Increase due to acquisition267 30.30   
Exercised(2,926)18.52   
Forfeited(280)23.06   
Expired(21)12.55 
Outstanding at December 31, 20214,468 $20.58 4.9$498,936 
Options exercisable4,193 $19.85 4.7$471,347 
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Schedule of Stock Options Outstanding and Exercisable The following table summarizes the information about stock options outstanding and exercisable at December 31, 2021:
Options OutstandingOptions Exercisable
Range of Exercise PricesOutstanding at December 31, 2021Weighted-
Average
Remaining
Contractual
Life in Years		Weighted-Average
Exercise
Price		Exercisable at December 31, 2021Weighted-
Average
Remaining
Contractual
Life in Years		Weighted-Average
Exercise
Price
(Shares in thousands)
$0.01 to $10.00
671 4.6$7.92 631 4.3$8.38 
$10.01 to $20.00
1,545 4.414.78 1,544 4.414.78 
$20.01 to $30.00
1,794 4.924.62 1,698 4.924.37 
$30.01 to $40.00
152 6.135.58 147 6.135.76 
$40.01 to $50.00
306 7.646.49 173 6.249.12 
4,468 4.9$20.58 4,193 4.7$19.85 
Schedule of Restricted Stock Units and Performance Stock Units
Unvested RSUs, PSUs, and market-based awards outstanding at December 31, 2021 and changes during the year ended December 31, 2021 are as follows:
 RSUsPSUsMarket-based awards
 Number of sharesWeighted Average Grant Date Fair Value
Number of shares(a)
Weighted Average Grant Date Fair Value
Number of shares(a)
Weighted Average Grant Date Fair Value
 (Shares in thousands)
Unvested at January 1, 20213,299 $63.02 550 $74.59 714 $19.34 
Granted1,452 157.61 212 159.23 803 159.67 
Vested(1,195)56.46 — — (559)19.81 
Forfeited(436)93.27 (221)97.42 (146)148.66 
Expired— — — — (30)20.84 
Unvested at December 31, 20213,120 $105.33 541 $98.41 782 $138.95 
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(a)Represents the maximum shares issuable.