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STOCK-BASED COMPENSATION PLANS (Tables) | 12 Months Ended
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Dec. 31, 2023
Share-Based Payment Arrangement [Abstract] |
Summary of Stock Option Activity | The following table summarizes the Company’s stock option activity and related information for the years ended December 31. There were no stock options granted during the years ended December 31, 2023 or 2022.
|  | Options |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life |  | Aggregate Intrinsic value (in millions)
Outstanding at December 31, 2020 |  | 552,669 |  |  | $ | 69.82 |  |  | 6.1 |  | $ | 4 |
Granted |  | 126,794 |  |  | $ | 81.21 |  |  |  |  |
Exercised |  | (113,728) |  |  | $ | 50.38 |  |  |  |  |
Canceled |  | (33,820) |  |  | $ | 73.53 |  |  |  |  |
Outstanding at December 31, 2021 |  | 531,915 |  |  | $ | 75.40 |  |  | 6.5 |  | $ | 9 |
Exercised |  | (116,590) |  |  | $ | 68.57 |  |  |  |  |
Canceled |  | (15,387) |  |  | $ | 77.10 |  |  |  |  |
Outstanding at December 31, 2022 |  | 399,938 |  |  | $ | 77.32 |  |  | 5.9 |  | $ | 11 |
Exercised |  | (87,035) |  |  | $ | 74.49 |  |  |  |  |
Canceled |  | (3,078) |  |  | $ | 79.04 |  |  |  |  |
Outstanding at December 31, 2023 |  | 309,825 |  |  | $ | 78.41 |  |  | 5.3 |  | $ | 15 |
Exercisable at December 31, 2023 |  | 275,198 |  |  | $ | 78.06 |  |  | 5.3 |  | $ | 13 |
Summary of Stock Options Outstanding | Options outstanding at December 31, 2023 were as follows:
Range of Exercise Prices |  | Number of Options Outstanding |  | Weighted Average Exercise Price of Options Outstanding |  | Weighted Average Remaining Contractual Life |  | Number of Options Currently Exercisable |  | Weighted Average Exercise Price of Options Currently Exercisable
50.00 - 65.00 |  | 27,595 |  |  | $ | 61.51 |  |  | 2.9 |  | 27,595 |  |  | $ | 61.51 |
65.00 - 80.00 |  | 131,568 |  |  | $ | 75.03 |  |  | 5.6 |  | 131,568 |  |  | $ | 75.03 |
Over 80.00 |  | 150,662 |  |  | $ | 84.46 |  |  | 5.5 |  | 116,035 |  |  | $ | 85.43 |
|  | 309,825 |  |  | $ | 78.41 |  |  | 5.3 |  | 275,198 |  |  | $ | 78.06 |
Summary of Restricted Stock Activity and Incentive Stock Awards Activity | The following table summarizes the restricted stock and incentive stock units activity and related information for the years ended December 31:
|  | Restricted Stock and Units |  | Incentive Stock Awards |  | Weighted Average Grant Date Fair Value
Outstanding at December 31, 2020 |  | 656,006 |  |  | 270,645 |  |  | $ | 73.80 |
Granted |  | 235,902 |  |  | 241,467 |  |  | $ | 81.64 |
Vested |  | (350,955) |  |  | (37,672) |  |  | $ | 71.82 |
Adjustment for incentive stock awards expected to vest |  | — |  |  | 180,767 |  |  | $ | 76.26 |
Canceled |  | (33,255) |  |  | (48,106) |  |  | $ | 76.24 |
Outstanding at December 31, 2021 |  | 507,698 |  |  | 607,101 |  |  | $ | 78.06 |
Granted |  | 460,841 |  |  | 176,657 |  |  | $ | 91.19 |
Vested |  | (234,597) |  |  | (43,039) |  |  | $ | 75.14 |
Adjustment for incentive stock awards expected to vest |  | — |  |  | 45,301 |  |  | $ | 84.55 |
Canceled |  | (44,522) |  |  | (41,176) |  |  | $ | 76.84 |
Outstanding at December 31, 2022 |  | 689,420 |  |  | 744,844 |  |  | $ | 84.73 |
Granted |  | 368,209 |  |  | 192,751 |  |  | $ | 104.70 |
Vested |  | (262,339) |  |  | (265,678) |  |  | $ | 81.00 |
Adjustment for incentive stock awards expected to vest |  | — |  |  | 31,011 |  |  | $ | 88.02 |
Canceled |  | (34,721) |  |  | (10,196) |  |  | $ | 93.44 |
Outstanding at December 31, 2023 |  | 760,569 |  |  | 692,732 |  |  | $ | 93.65 |

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