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STOCK-BASED COMPENSATION - Narrative (Details)
12 Months Ended
Dec. 31, 2021
USD ($)
plan
installment
$ / shares
shares
Dec. 31, 2020
USD ($)
$ / shares
shares
Dec. 31, 2019
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award      
Number of active stock-based compensation plans | plan 1    
Shares available for grant (in shares) | shares 8,100,000    
Stated term (in years) 10 years    
Unrecognized compensation cost, net of estimated forfeitures $ 107,700,000    
Weighted average period over which cost is expected to be recognized (in years) 2 years 10 months 24 days    
Tax benefit recognized related to stock-based compensation $ 16,900,000 $ 24,300,000 $ 28,800,000
Tax benefit realized from exercises 10,800,000 11,400,000 27,900,000
Intrinsic value of exercises 103,800,000 120,900,000 107,500,000
Incremental compensation cost from modification recognized in year of modification 900,000 21,100,000 29,000,000
Proceeds from the exercise of stock options 0 0 573,000
Cash remitted in stock issuance assuming conversion $ (10,331,000) (2,914,000) (12,768,000)
Assumed withholding rate (as a percent) 50.00%    
Stock-based compensation expense $ 28,702,000 $ 83,649,000 $ 68,255,000
Stock Options and Stock Appreciation Rights      
Share-based Compensation Arrangement by Share-based Payment Award      
Vesting period (in years) 4 years    
Stock options and stock appreciation rights granted in period (shares) | shares 0 0 0
Stock Appreciation Rights (SARs)      
Share-based Compensation Arrangement by Share-based Payment Award      
Stock issued assuming conversion (shares) | shares 300,000    
Cash remitted in stock issuance assuming conversion $ 2,900,000    
RSUs & Subsidiary Denominated Equity Instruments      
Share-based Compensation Arrangement by Share-based Payment Award      
Stock issued assuming conversion (shares) | shares 9,100,000    
Cash remitted in stock issuance assuming conversion $ 83,500,000    
RSUs      
Share-based Compensation Arrangement by Share-based Payment Award      
Number of installments | installment 1    
Weighted average grant date fair value (USD per share) | $ / shares $ 12.73 $ 7.37 $ 13.16
Equity units granted (shares) | shares 11,670,000    
Fair value of RSU's that vested during the period $ 35,200,000 $ 23,400,000 $ 16,100,000
Equity units vested (shares) | shares 2,424,000    
Subsidiary Denominated Equity Instruments      
Share-based Compensation Arrangement by Share-based Payment Award      
Vesting period (in years) 4 years    
MSUs      
Share-based Compensation Arrangement by Share-based Payment Award      
Vesting period (in years) 2 years    
Number of installments | installment 5    
Stock-based compensation expense $ 10,400,000    
Weighted average grant date fair value (USD per share) | $ / shares $ 14.39   $ 3.67
Equity units granted (shares) | shares 3,328,000 0  
Fair value of RSU's that vested during the period $ 2,100,000 $ 5,200,000 $ 3,200,000
Equity units vested (shares) | shares 153,000    
PSUs      
Share-based Compensation Arrangement by Share-based Payment Award      
Weighted average grant date fair value (USD per share) | $ / shares $ 13.51 $ 6.92 $ 15.93
Equity units granted (shares) | shares 696,000    
Fair value of RSU's that vested during the period $ 3,600,000    
Equity units vested (shares) | shares 369,000 0 0
Minimum | RSUs      
Share-based Compensation Arrangement by Share-based Payment Award      
Vesting period (in years) 3 years    
Minimum | PSUs      
Share-based Compensation Arrangement by Share-based Payment Award      
Vesting period (in years) 2 years    
Maximum | RSUs      
Share-based Compensation Arrangement by Share-based Payment Award      
Vesting period (in years) 4 years    
Maximum | PSUs      
Share-based Compensation Arrangement by Share-based Payment Award      
Vesting period (in years) 5 years