RETIREMENT PLANS AND OTHER BENEFITS - Information Regarding Company's Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Employee Benefits and Share-based Compensation	$ 22.3	$ 19.9	$ 17.3
Other Benefits
Change in benefit obligation:
Benefit obligation at beginning of year	1.4	2.1
Service cost	0.0	0.0	0.0
Interest cost	0.1	0.1	0.1
Plan amendments	0.0	0.0
Actuarial loss (gain)	(0.1)	(0.6)
Benefits paid	(0.1)	(0.2)
Foreign exchange effect	0.0	0.0
Benefit obligation at end of year	1.3	1.4	2.1
Change in plan assets:
Fair value of plan assets at beginning of year	0.0	0.0
Actual return on plan assets	0.0	0.0
Employer contribution	0.1	0.2
Employee contribution	0.0	0.0
Benefits paid	(0.1)	(0.2)
Foreign exchange effect	0.0	0.0
Fair value of plan assets at end of year	0.0	0.0	$ 0.0
Funded status	(1.3)	(1.4)
Amounts recognized in the statement of financial position are included in:
Other assets	0.0	0.0
Other current liabilities	0.2	0.2
Other non-current liabilities	1.1	1.2
Total liabilities	1.3	1.4
Amounts recognized in accumulated other comprehensive loss consist of:
Actuarial net (gain) loss	(0.5)	(0.5)
Prior service cost	0.0	0.0
Total amounts recognized in accumulated other comprehensive loss	$ (0.5)	$ (0.5)
Weighted-average assumptions as of December 31:
Discount rate	5.38%	5.33%	2.58%
Components of net periodic cost:
Service cost	$ 0.0	$ 0.0	$ 0.0
Interest cost	0.1	0.1	0.1
Expected return on plan assets	0.0	0.0	0.0
Recognition of prior service cost	0.0	0.0	0.0
Amortization of actuarial loss	(0.1)	0.0	0.0
Other	0.0	0.0	0.0
Net periodic cost	$ 0.0	0.1	0.1
U.S. Plan | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Basis of Serp Benefit Compensation Earned Years of Employment	5 years
Accumulated benefit obligation at end of year	$ 32.2	32.7
Change in benefit obligation:
Benefit obligation at beginning of year	32.7	43.6
Service cost	0.0	0.0	0.0
Interest cost	1.7	1.2	1.1
Plan amendments	0.0	0.0
Actuarial loss (gain)	0.3	(9.7)
Benefits paid	(2.5)	(2.4)
Foreign exchange effect	0.0	0.0
Benefit obligation at end of year	32.2	32.7	43.6
Change in plan assets:
Fair value of plan assets at beginning of year	0.0	0.0
Actual return on plan assets	0.0	0.0
Employer contribution	2.5	2.4
Employee contribution	0.0	0.0
Benefits paid	(2.5)	(2.4)
Foreign exchange effect	0.0	0.0
Fair value of plan assets at end of year	0.0	0.0	$ 0.0
Funded status	(32.2)	(32.7)
Amounts recognized in the statement of financial position are included in:
Other assets	0.0	0.0
Other current liabilities	2.5	2.4
Other non-current liabilities	29.7	30.3
Total liabilities	32.2	32.7
Amounts recognized in accumulated other comprehensive loss consist of:
Actuarial net (gain) loss	(4.0)	(4.3)
Prior service cost	0.0	0.0
Total amounts recognized in accumulated other comprehensive loss	$ (4.0)	$ (4.3)
Weighted-average assumptions as of December 31:
Discount rate	5.34%	5.43%	2.80%
Components of net periodic cost:
Service cost	$ 0.0	$ 0.0	$ 0.0
Interest cost	1.7	1.2	1.1
Expected return on plan assets	0.0	0.0	0.0
Recognition of prior service cost	0.0	0.0	0.0
Amortization of actuarial loss	(0.2)	0.2	0.3
Other	0.0	0.0	0.0
Net periodic cost	1.5	1.4	1.4
Foreign Plan | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation at end of year	103.7	95.0
Change in benefit obligation:
Benefit obligation at beginning of year	96.5	151.3
Service cost	1.2	1.1	1.1
Interest cost	4.6	2.6	2.3
Plan amendments	0.1	0.5
Actuarial loss (gain)	3.5	(36.0)
Benefits paid	(5.7)	(7.6)
Foreign exchange effect	5.5	(15.4)
Benefit obligation at end of year	105.7	96.5	151.3
Change in plan assets:
Fair value of plan assets at beginning of year	81.2	145.2
Actual return on plan assets	2.7	(47.7)
Employer contribution	7.2	6.3
Employee contribution	0.3	0.3
Benefits paid	(5.7)	(7.6)
Foreign exchange effect	4.9	(15.3)
Fair value of plan assets at end of year	90.6	81.2	$ 145.2
Funded status	(15.1)	(15.3)
Amounts recognized in the statement of financial position are included in:
Other assets	0.0	0.0
Other current liabilities	0.7	0.7
Other non-current liabilities	14.4	14.6
Total liabilities	15.1	15.3
Amounts recognized in accumulated other comprehensive loss consist of:
Actuarial net (gain) loss	54.8	50.0
Prior service cost	2.8	2.7
Total amounts recognized in accumulated other comprehensive loss	$ 57.6	$ 52.7
Weighted-average assumptions as of December 31:
Discount rate	4.35%	4.68%	1.93%
Expected return on plan assets	3.93%	3.94%	3.93%
Rate of compensation increase	0.31%	0.26%	0.18%
Components of net periodic cost:
Service cost	$ 1.2	$ 1.1	$ 1.1
Interest cost	4.6	2.6	2.3
Expected return on plan assets	(3.4)	(5.1)	(5.3)
Recognition of prior service cost	0.2	0.1	0.1
Amortization of actuarial loss	2.3	1.1	2.1
Other	(0.3)	(0.3)	(0.2)
Net periodic cost	$ 4.6	$ (0.5)	$ 0.1