REVENUE RECOGNITION - Performance Obligation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred revenue, period increase (decrease)		$ 0.8
Deferred revenue, revenue recognized	$ 4.8	4.9
Performance Obligation B
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred revenue	12.6	$ 17.4	$ 21.5
Performance Obligation B | One to three years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred revenue	9.6
Performance Obligation B | More than three years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred revenue	$ 3.0