SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Pretax Compensation Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Income tax benefits	$ 9.1	$ 6.9	$ 4.7
Performance Shares, Restricted Stock Units, And Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	$ 60.6	$ 38.7	$ 32.5