DEBT - Schedule of Outstanding Letters of Credit and the Unused Portion of Senior Credit Facility (Details) - Senior credit facility - Line of credit - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Outstanding letters of credit under Credit Facility	$ 56.5	$ 59.0
Unused portion of the Credit Facility	$ 432.7	$ 1,110.0