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STOCK-BASED COMPENSATION - Plan Information and P&L Impact (Details) shares in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2021 USD ($) plan shares | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
STOCK-BASED COMPENSATION |  |  |
Number of active plans | plan | 1 |  |
Income tax benefit related to non-cash compensation | $ 14.1 | $ 11.4 | $ 12.2
Excess tax benefit, including state taxes, in income tax expense | $ 11.7 | $ 2.5 | $ 17.1
Equity Award Plan |  |  |
STOCK-BASED COMPENSATION |  |  |
Number of shares authorized | shares | 6.7 |  |
Term of plan | 10 years |  |

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- Definition Represents the number of active plans under which future awards may be granted. + References No definition available. + Details
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- Definition The period of time, from the grant date until the time at which the share-based [option] award expires. + References No definition available. + Details
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