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EQUITY COMPENSATION PLANS - Stock Options (Details) - Employee Stock Option [Member] - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Stock incentive and option plans |  |  |
Stock option expiration period | 10 years |  |
Stock option vesting period | 3 years |  |
SHARES |  |  |
Outstanding, beginning of year (in shares) | 7,031,103 | 6,217,161 | 6,802,415
Granted (in shares) | 861,840 | 1,228,673 | 812,853
Exercised (in shares) | (832,050) | (294,228) | (1,306,998)
Canceled (in shares) | (139,537) | (120,503) | (91,109)
Outstanding, end of year (in shares) | 6,921,356 | 7,031,103 | 6,217,161
Exercisable, end of year (in shares) | 5,107,518 | 5,168,161 | 4,604,922
Vested and expected to vest, end of year (in shares) | 6,862,799 |  |
AVERAGE PRICE PER SHARE |  |  |
Outstanding, beginning of year (in dollars per share) | $ 160.45 | $ 160.91 | $ 144.20
Granted (in dollars per share) | 190.53 | 148.79 | 223.85
Exercised (in dollars per share) | 119.41 | 101.08 | 110.91
Canceled (in dollars per share) | 183.77 | 210.26 | 192.49
Outstanding, end of year (in dollars per share) | 168.65 | 160.45 | 160.91
Exercisable, end of year (in dollars per share) | 165.77 | $ 155.45 | $ 141.21
Vested and expected to vest, end of year (in dollars per shares) | $ 168.60 |  |
Total intrinsic value of options exercised during period | $ 47.7 | $ 21.0 | $ 148.1
Total aggregate intrinsic value of in-the-money options outstanding | $ 244.4 |  |
Weighted-average remaining contractual life of options outstanding | 6 years 3 months 18 days |  |
Total aggregate intrinsic value of in-the-money options exercisable | $ 199.6 |  |
Weighted-average remaining contractual life of options exercisable | 5 years 3 months 18 days |  |
Aggregate intrinsic value of vested and expected to vest options outstanding | $ 242.5 |  |
Weighted-average remaining contractual life of vested and expected to vest options outstanding | 6 years 3 months 18 days |  |

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