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SHARE-BASED COMPENSATION AND BENEFIT PLANS (Nonqualified Deferred Compensation Plan) (Narrative) (Details) - Nonqualified Deferred Compensation Plan [Member] - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Share-Based Compensation and Benefit Plans          
Deferred compensation plan obligation $ 54.6   $ 54.6   $ 49.4
Deferred compensation plan, employer discretionary contribution     0.0 $ 0.0  
Deferred compensation plan cost recognized   $ 0.1   $ 0.2  
Maximum [Member]          
Share-Based Compensation and Benefit Plans          
Deferred compensation plan cost recognized $ 0.1   $ 0.1