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ACCRUED LIABILITIES - Changes in Reserve for Recoupment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Refunds Payable And Reserve [Roll Forward]
Beginning balance	$ 20.1	$ 19.3
Recoupments paid	(11.3)	(13.8)
Additions to the reserve	11.1	14.6
Ending balance	$ 19.9	$ 20.1

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