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STOCK-BASED COMPENSATION - Stock Option, Restricted Stock, and Performance Shares (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Shares |  |  |
Outstanding at the beginning of the period (in shares) | 1,517,876 |  |
Exercised (in shares) | (194,629) |  |
Forfeited (in shares) | (37,074) |  |
Outstanding at the end of the period (in shares) | 1,286,173 | 1,517,876 |
Vested and expected to vest (in shares) | 1,286,173 |  |
Exercisable at the end of the period (in shares) | 1,228,594 |  |
Weighted Average Exercise Price |  |  |
Outstanding at the beginning of the period (in dollars per share) | $ 44.82 |  |
Exercised (in dollars per share) | 16.44 |  |
Forfeited (in dollars per share) | 95.02 |  |
Outstanding at the end of the period (in dollars per share) | 47.67 | $ 44.82 |
Vested and expected to vest (in dollars per share) | 47.67 |  |
Exercisable at the end of the period (in dollars per share) | $ 45.32 |  |
Weighted Average Remaining Contractual Term |  |  |
Outstanding at the end of the period | 3 years 9 months 18 days | 4 years 8 months 12 days |
Vested and expected to vest at end of period | 3 years 9 months 18 days |  |
Exercisable at the end of the period | 3 years 8 months 12 days |  |
Aggregate Intrinsic Value |  |  |
Outstanding at the end of the period | $ 42,878,000 |  |
Vested and expected to vest at the end of the period | 42,878,000 |  |
Exercisable at the end of the period | 42,878,000 |  |
Additional disclosures |  |  |
Total intrinsic value of options exercised | 11,700,000 | $ 36,400,000 | $ 155,800,000
Proceeds from stock option exercises | $ 3,200,000 | $ 6,500,000 | $ 14,400,000
Restricted Shares and RSUs |  |  |
Restricted Shares and Performance Shares |  |  |
Outstanding at the beginning of the period (in shares) | 5,254,709 |  |
Granted (in shares) | 3,510,373 |  |
Released (in shares) | (1,797,915) |  |
Forfeited (in shares) | (694,404) |  |
Outstanding at the end of the period (in shares) | 6,272,763 | 5,254,709 |
Weighted Average Grant Date Fair Value |  |  |
Outstanding at the beginning of the period (in dollars per share) | $ 85.87 |  |
Granted (in dollars per share) | 62.36 | $ 68.18 | $ 129.16
Released (in dollars per share) | 88.28 |  |
Forfeited (in dollars per share) | 73.54 |  |
Outstanding at the end of the period (in dollars per share) | $ 73.39 | $ 85.87 |
Fair value of equity instruments other than options | $ 158,200,000 | $ 117,600,000 | $ 219,400,000
Performance Shares |  |  |
Restricted Shares and Performance Shares |  |  |
Outstanding at the beginning of the period (in shares) | 967,846 |  |
Granted (in shares) | 782,966 |  |
Released (in shares) | (12,284) |  |
Forfeited (in shares) | (140,727) |  |
Outstanding at the end of the period (in shares) | 1,597,801 | 967,846 |
Weighted Average Grant Date Fair Value |  |  |
Outstanding at the beginning of the period (in dollars per share) | $ 102.58 |  |
Granted (in dollars per share) | 80.50 | $ 89.43 | $ 138.09
Released (in dollars per share) | 78.32 |  |
Forfeited (in dollars per share) | 93.73 |  |
Outstanding at the end of the period (in dollars per share) | $ 92.73 | $ 102.58 |
Fair value of equity instruments other than options | $ 1,000,000 | $ 27,200,000 | $ 0
Number of outstanding performance share units (in shares) | 772,906 |  |

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