PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS - Changes in projected benefit obligations, fair value of plan assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Pensions
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Company contributions	$ 5.7	$ 11.9
Other Post-retirement Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation, beginning balance	6.7	8.4
Service cost	0.0	0.0	$ 0.0
Interest cost	0.5	0.3	0.3
Actuarial (gain) loss	0.2	(1.5)
Settlements	0.0	0.0
Foreign currency exchange rate changes	0.1	(0.1)
Benefits paid	(0.4)	(0.4)
Other	0.0	0.0
MSB benefit obligations classified as held for sale	0.0	0.0
Projected benefit obligation, ending balance	7.1	6.7	8.4
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, beginning balance	0.0	0.0
Actual return on plan assets	0.0	0.0
Company contributions	0.0	0.0
Foreign currency exchange rate changes	0.0	0.0
Settlements	0.0	0.0
Benefits paid	0.0	0.0
Other	0.0	0.0
Fair value of plan assets, ending balance	0.0	0.0	0.0
Funded status of the plans (liability) as of December 31	(7.1)	(6.7)
Amounts recognized in balance sheet
Current portion of accrued pension and other post-retirement benefits	(0.6)	(0.6)
Accrued pension and other post-retirement benefits, net of current portion	(6.5)	(6.1)
Funded status as of December 31	(7.1)	(6.7)
Pre-tax amounts recognized in accumulated other comprehensive (income) loss
Unrecognized actuarial loss	(0.8)	(1.1)
Unrecognized prior service cost	0.0	0.0
Accumulated other comprehensive (income) loss as of December 31	(0.8)	(1.1)
Plans with underfunded or non-funded projected benefit obligation
Aggregate projected benefit obligation	7.1	6.7
Aggregate fair value of plan assets	0.0	0.0
Aggregate accumulated benefit obligation	0.0	0.0
Aggregate fair value of plan assets	0.0	0.0
U.S. | Pensions
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Accumulated benefit obligation	484.0	465.1
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation, beginning balance	465.1	653.6
Service cost	0.0	0.0	0.0
Interest cost	25.2	18.5	18.0
Actuarial (gain) loss	24.0	(173.3)
Settlements	(0.4)	(1.5)
Foreign currency exchange rate changes	0.0	0.0
Benefits paid	(29.9)	(32.2)
Other	0.0	0.0
MSB benefit obligations classified as held for sale	0.0	0.0
Projected benefit obligation, ending balance	484.0	465.1	653.6
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, beginning balance	377.3	517.5
Actual return on plan assets	23.7	(110.6)
Company contributions	0.8	4.1
Foreign currency exchange rate changes	0.0	0.0
Settlements	(0.4)	(1.5)
Benefits paid	(30.0)	(32.2)
Other	0.0	0.0
Fair value of plan assets, ending balance	371.4	377.3	517.5
Funded status of the plans (liability) as of December 31	(112.6)	(87.8)
Amounts recognized in balance sheet
Current portion of accrued pension and other post-retirement benefits	(0.5)	(0.5)
Accrued pension and other post-retirement benefits, net of current portion	(112.1)	(87.3)
Funded status as of December 31	(112.6)	(87.8)
Pre-tax amounts recognized in accumulated other comprehensive (income) loss
Unrecognized actuarial loss	132.5	116.3
Unrecognized prior service cost	0.0	0.0
Accumulated other comprehensive (income) loss as of December 31	132.5	116.3
Plans with underfunded or non-funded projected benefit obligation
Aggregate projected benefit obligation	483.1	464.3
Aggregate fair value of plan assets	370.2	376.1
Aggregate accumulated benefit obligation	483.1	464.3
Aggregate fair value of plan assets	370.2	376.1
International | Pensions
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Accumulated benefit obligation		330.0
Accumulated benefit obligation, excluding MSB benefit obligations classified as held for sale	365.3
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation, beginning balance	339.7	601.6
Service cost	3.3	4.1	10.0
Interest cost	16.6	10.4	9.8
Actuarial (gain) loss	16.2	(197.8)
Settlements	(0.7)	(1.0)
Foreign currency exchange rate changes	18.9	(55.5)
Benefits paid	(17.7)	(21.6)
Other	1.9	(0.5)
MSB benefit obligations classified as held for sale	(15.1)	0.0
Projected benefit obligation, ending balance	363.1	339.7	601.6
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, beginning balance	372.0	627.5
Actual return on plan assets	10.9	(186.5)
Company contributions	7.9	14.3
Foreign currency exchange rate changes	21.3	(61.6)
Settlements	(0.7)	(1.1)
Benefits paid	(17.7)	(21.6)
Other	0.3	1.0
Fair value of plan assets, ending balance	394.0	372.0	$ 627.5
Funded status of the plans (liability) as of December 31	30.9	32.3
Amounts recognized in balance sheet
Current portion of accrued pension and other post-retirement benefits	(3.3)	(1.4)
Accrued pension and other post-retirement benefits, net of current portion	34.2	33.7
Funded status as of December 31	30.9	32.3
Pre-tax amounts recognized in accumulated other comprehensive (income) loss
Unrecognized actuarial loss	49.0	26.5
Unrecognized prior service cost	2.9	3.0
Accumulated other comprehensive (income) loss as of December 31	51.9	29.5
Plans with underfunded or non-funded projected benefit obligation
Aggregate projected benefit obligation	34.1	42.0
Aggregate fair value of plan assets	0.0	0.0
Aggregate accumulated benefit obligation	39.8	33.9
Aggregate fair value of plan assets	$ 0.0	$ 0.0