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SHARE-BASED COMPENSATION PLANS - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions |  |  |  |  |  | 12 Months Ended | 156 Months Ended |
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Nov. 07, 2024 | Sep. 12, 2024 | Mar. 15, 2024 | Feb. 29, 2024 | Feb. 28, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2024 | Jun. 30, 2020
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Share-based compensation expense |  |  |  |  |  | $ 63.0 | $ 49.0 | $ 45.0 |  |
Income tax benefit recorded |  |  |  |  |  | 8.0 | 7.0 | 4.0 |  |
Additional paid-in capital due to tax benefit from dividends on restricted shares |  |  |  |  |  | $ 0.6 | $ 0.5 | 0.6 |  |
Options outstanding |  |  |  |  |  | 0 | 0 |  | 0 |
Unrecognized compensation cost |  |  |  |  |  | $ 113.0 |  |  |  |
Unrecognized compensation cost expected to be recognized over a weighted-average period, years |  |  |  |  |  | 2 years 4 months 24 days |  |  |  |
Fair value of shares vested |  |  |  |  |  | $ 43.0 | $ 41.0 | 40.0 |  |
Tax benefit from stock options vested |  |  |  |  |  | $ 9.0 | $ 11.0 | $ 9.0 |  |
2020 Employee Plan |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Shares authorized |  |  |  |  |  |  |  |  |  | 1,400,000
Remaining shares |  |  |  |  |  | 554,882 |  |  |  |
2009 Director Plan |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Shares authorized |  |  |  |  |  | 37,439 |  |  | 37,439 |
Remaining shares |  |  |  |  |  | 34,617 |  |  |  |
2003 Director Plan |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Shares authorized |  |  |  |  |  | 500,000 |  |  | 500,000 |
Remaining shares |  |  |  |  |  | 264,704 |  |  |  |
Non-Employee Directors |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Common shares, issued (in shares) |  |  |  |  |  | 324 | 447 | 774 | 324 |
Aggregate value of issuances |  |  |  |  |  | $ 0.1 | $ 0.2 | $ 0.2 |  |
Options and Restricted Shares | 2020 Employee Plan |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting period, years |  |  |  |  |  | 3 years | 5 years |  |  |
Options and Restricted Shares | 2020 Employee Plan | Share-Based Payment Arrangement, Tranche One |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting percentage |  |  |  |  |  | 33.30% | 20.00% |  |  |
Options and Restricted Shares | 2020 Employee Plan | Share-Based Payment Arrangement, Tranche Two |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting percentage |  |  |  |  |  | 33.30% | 20.00% |  |  |
Options and Restricted Shares | 2020 Employee Plan | Share-Based Payment Arrangement, Tranche Three |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting percentage |  |  |  |  |  | 33.30% | 20.00% |  |  |
Options and Restricted Shares | 2020 Employee Plan | Share-Based Payment Arrangement, Tranche Four |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting percentage |  |  |  |  |  |  | 20.00% |  |  |
Options and Restricted Shares | 2020 Employee Plan | Share-Based Payment Arrangement, Tranche Five |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting percentage |  |  |  |  |  |  | 20.00% |  |  |
Options and Restricted Shares | 2009 Director Plan |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Expiration period, in years |  |  |  |  |  | 10 years |  |  |  |
Options and Restricted Shares | 2003 Director Plan |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting period, years |  |  |  |  |  | 3 years |  |  |  |
Options and Restricted Shares | 2003 Director Plan | Share-Based Payment Arrangement, Tranche One |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting percentage |  |  |  |  |  | 33.00% |  |  |  |
Options and Restricted Shares | 2003 Director Plan | Share-Based Payment Arrangement, Tranche Two |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting percentage |  |  |  |  |  | 33.00% |  |  |  |
Options and Restricted Shares | 2003 Director Plan | Share-Based Payment Arrangement, Tranche Three |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting percentage |  |  |  |  |  | 33.00% |  |  |  |
Options and Restricted Shares | Non-Employee Directors |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Common stock acquired for net-share settlement (in shares) |  |  |  |  |  | 54,537 | 56,832 | 69,833 |  |
Common stock values of shares acquired for net-share settlement |  |  |  |  |  | $ 20.0 | $ 22.0 | $ 21.0 |  |
Performance Shares |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Granted (in shares) |  |  |  |  | 18,713 |  |  |  |  |
Weighted-average grant-date fair value of options granted (in dollars per share) |  |  |  |  | $ 369.52 |  |  |  |  |
Performance Shares | 2020 Employee Plan |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting percentage |  |  |  |  |  | 100.00% |  |  |  |
Vesting period, years |  |  |  |  |  | 3 years |  |  |  |
Performance Shares | 2020 Employee Plan | Minimum |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Shares of stock per unit awarded (in shares) |  |  |  |  |  | 0 |  |  |  |
Performance Shares | 2020 Employee Plan | Maximum |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Shares of stock per unit awarded (in shares) |  |  |  |  |  | 1.75 |  |  |  |
Performance Shares | Non-Employee Directors |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Common stock acquired for net-share settlement (in shares) |  |  |  |  |  | 11,336 | 6,117 | 6,175 |  |
Common stock values of shares acquired for net-share settlement |  |  |  |  |  | $ 4.0 | $ 2.0 | $ 2.0 |  |
Restricted Shares |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Granted (in shares) |  |  |  |  |  | 222,196 |  |  |  |
Weighted-average grant-date fair value of options granted (in dollars per share) | $ 365.61 | $ 376.58 | $ 377.80 | $ 367.04 | $ 369.52 |  |  |  |  |
Stock Option |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Granted (in shares) |  |  |  |  |  | 0 |  |  | 0 |
Aggregate intrinsic value of options exercised |  |  |  |  |  |  |  | 10.0 |  |
Cash received from the exercised share options |  |  |  |  |  |  |  | 4.0 |  |
Tax benefit from options exercised |  |  |  |  |  |  |  | $ 2.0 |  |

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