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, 2021	Dec. 31, 2020	Dec. 31, 2019
Amounts recognized in balance sheet
Accrued pension and other post-retirement benefits, net of current portion	$ (113.4)	$ (268.4)
Other Post-retirement Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation, beginning balance	9.4	10.2
Service cost	0.0	0.0	$ 0.0
Interest cost	0.3	0.4	0.5
Actuarial (gain) loss	(0.7)	(0.2)
Settlements	0.0	0.0
Foreign currency exchange rate changes	(0.2)	(0.6)
Plan participants’ contributions	0.0	0.0
Benefits paid	(0.4)	(0.4)
Other	0.0	0.0
Projected benefit obligation, ending balance	8.4	9.4	10.2
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
Plan participants’ contributions	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	(8.4)	(9.4)
Amounts recognized in balance sheet
Current portion of accrued pension and other post-retirement benefits	(0.6)	(0.7)
Accrued pension and other post-retirement benefits, net of current portion	(7.8)	(8.7)
Funded status as of December 31	(8.4)	(9.4)
Pre-tax amounts recognized in accumulated other comprehensive (income) loss
Unrecognized actuarial loss	0.4	1.3
Unrecognized prior service cost	0.0	0.0
Accumulated other comprehensive (income) loss as of December 31	0.4	1.3
Plans with underfunded or non-funded projected benefit obligation
Aggregate projected benefit obligation	8.4	9.4
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	653.6
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation, beginning balance	684.7
Service cost	0.0	0.0	0.0
Interest cost	18.0	22.2	25.6
Actuarial (gain) loss	7.1
Settlements	(22.6)
Foreign currency exchange rate changes	0.0
Plan participants’ contributions	0.0
Benefits paid	(33.6)
Other	0.0
Projected benefit obligation, ending balance	653.6	684.7
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, beginning balance	483.7
Actual return on plan assets	61.1
Company contributions	28.9
Foreign currency exchange rate changes	0.0
Settlements	(22.6)
Plan participants’ contributions	0.0
Benefits paid	(33.6)
Other	0.0
Fair value of plan assets, ending balance	517.5	483.7
Funded status of the plans (liability) as of December 31	(136.1)
Amounts recognized in balance sheet
Current portion of accrued pension and other post-retirement benefits	(2.9)	(4.6)
Accrued pension and other post-retirement benefits, net of current portion	(133.2)	(196.4)
Funded status as of December 31	(136.1)	(201.0)
Pre-tax amounts recognized in accumulated other comprehensive (income) loss
Unrecognized actuarial loss	156.6	198.4
Unrecognized prior service cost	0.0	0.0
Accumulated other comprehensive (income) loss as of December 31	156.6	198.4
International | Pensions
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Accumulated benefit obligation	589.1	598.1
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation, beginning balance	656.4	585.1
Service cost	10.0	10.4	7.0
Interest cost	9.8	11.3	13.7
Actuarial (gain) loss	(32.5)	30.4
Settlements	0.0	(2.6)
Foreign currency exchange rate changes	(11.9)	23.6
Plan participants’ contributions	0.9	1.1
Benefits paid	(22.0)	(17.8)
Other	(9.1)	14.9
Projected benefit obligation, ending balance	601.6	656.4	585.1
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, beginning balance	591.5	521.2
Actual return on plan assets	46.4	40.1
Company contributions	19.6	27.1
Foreign currency exchange rate changes	(8.9)	20.4
Settlements	0.0	(1.9)
Plan participants’ contributions	0.9	1.1
Benefits paid	(22.0)	(15.8)
Other	0.0	(0.7)
Fair value of plan assets, ending balance	627.5	591.5	521.2
Funded status of the plans (liability) as of December 31	25.9	(64.9)
Amounts recognized in balance sheet
Current portion of accrued pension and other post-retirement benefits	(1.7)	(1.6)
Accrued pension and other post-retirement benefits, net of current portion	27.6	(63.3)
Funded status as of December 31	25.9	(64.9)
Pre-tax amounts recognized in accumulated other comprehensive (income) loss
Unrecognized actuarial loss	15.9	79.1
Unrecognized prior service cost	3.4	3.9
Accumulated other comprehensive (income) loss as of December 31	19.3	83.0
Plans with underfunded or non-funded projected benefit obligation
Aggregate projected benefit obligation	57.9	513.1
Aggregate fair value of plan assets	0.0	442.7
Aggregate accumulated benefit obligation	46.7	50.8
Aggregate fair value of plan assets	0.0	0.0
United States Pension Plan | Pensions
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Accumulated benefit obligation		684.7
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation, beginning balance	684.7	669.7
Service cost		0.0
Interest cost		22.2
Actuarial (gain) loss		53.9
Settlements		(25.6)
Foreign currency exchange rate changes		0.0
Plan participants’ contributions		0.0
Benefits paid		(35.5)
Other		0.0
Projected benefit obligation, ending balance		684.7	669.7
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, beginning balance	483.7	520.0
Actual return on plan assets		14.3
Company contributions		0.0
Foreign currency exchange rate changes		0.0
Settlements		(19.6)
Plan participants’ contributions		0.0
Benefits paid		(31.0)
Other		0.0
Fair value of plan assets, ending balance		483.7	$ 520.0
Funded status of the plans (liability) as of December 31		(201.0)
Plans with underfunded or non-funded projected benefit obligation
Aggregate projected benefit obligation	652.2	684.7
Aggregate fair value of plan assets	516.0	483.7
Aggregate accumulated benefit obligation	652.2	684.7
Aggregate fair value of plan assets	$ 516.0	$ 483.7