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SHARE-BASED COMPENSATION (Details) - Time Based And Performance Based Shares - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
SHARE-BASED AWARDS |  |  |  |
Shares granted | 7,400 |  | 152,100 |
Weighted average grant date fair value (in dollars per share) | $ 109.64 |  | $ 122.15 |
Total unrecognized compensation cost | $ 34.1 |  | $ 34.1 |
Unrecognized compensation cost over weighted average period to be recognized |  |  | 2 years |
Selling, general and administrative expenses |  |  |  |
SHARE-BASED AWARDS |  |  |  |
Total stock-based compensation cost | $ 6.3 | $ 5.2 | $ 12.0 | $ 9.8

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