INCOME TAXES (Unrecognized Tax Benefits) (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Unrecognized tax benefits
Reserve for unrecognized tax benefits, including interest and penalties, net of federal benefits, that would impact the effective tax rate	$ 21.9	$ 22.4	$ 24.2
Accrual of interest and penalties related to uncertain tax positions	3.9	3.5	3.8
Tax expense related to an increase in liabilities for interest and penalties	2.1	$ 1.5	$ 1.6
Reduction of unrecognized tax benefits due to lapse of statute of limitations and settlements over the next twelve months	$ 7.3
Open tax year	2020