RETIREMENT PLANS AND OTHER BENEFITS - Information Regarding Company's Plans (Details) $ in Millions		1 Months Ended	11 Months Ended	12 Months Ended
	Nov. 05, 2018 USD ($)	Dec. 31, 2018 USD ($)	Nov. 30, 2018 USD ($)	Dec. 31, 2018 USD ($) pensionplans	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Oct. 31, 2018 Participant
Amounts recognized in the statement of financial position consist of:
Non-current liabilities		$ 140.8		$ 140.8	$ 151.3
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Employee Benefits and Share-based Compensation				22.9	16.9	$ 19.3
Other Benefits
Change in benefit obligation:
Benefit obligation at beginning of year			$ 3.4	3.4	4.2
Service cost				0.0	0.0	0.0
Interest cost				0.1	0.1	0.2
Acquisitions and divestitures				0.0	0.0
Settlements				0.0	0.0
Plan amendments				0.0	0.0
Actuarial loss (gain)				(0.2)	(0.4)
Benefits paid				(0.3)	(0.5)
Foreign Exchange effect				0.0	0.0
Benefit obligation at end of year		3.0		3.0	3.4	4.2
Change in plan assets:
Fair value of plan assets at beginning of year			0.0	0.0	0.0
Actual return on plan assets				0.0	0.0
Settlements				0.0	0.0
Employer contribution				0.3	0.5
Employee contribution				0.0	0.0
Benefits paid				(0.3)	(0.5)
Foreign exchange effect				0.0	0.0
Fair value of plan assets at end of year		0.0		0.0	0.0	$ 0.0
Funded status		(3.0)		(3.0)	(3.4)
Amounts recognized in the statement of financial position consist of:
Current liabilities		0.4		0.4	0.4
Non-current liabilities		2.6		2.6	3.0
Total liabilities		3.0		3.0	3.4
Amounts recognized in accumulated other comprehensive income consist of:
Actuarial net loss		0.5		0.5	0.9
Prior service cost		0.0		0.0	0.0
Total amounts recognized in accumulated other comprehensive income		$ 0.5		$ 0.5	$ 0.9
Weighted-average assumptions as of December 31:
Discount rate		4.14%		4.14%	3.58%	3.81%
Components of net periodic cost:
Service cost				$ 0.0	$ 0.0	$ 0.0
Interest cost				0.1	0.1	0.2
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	(1.2)	0.0
Settlements				0.0	0.0	0.0
Other				0.0	0.0	0.0
Net periodic cost				$ 0.2	(1.1)	0.2
U.S. Plan | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Basis of Serp Benefit Compensation Earned Years of Employment				5 years
Number of qualified pension plans maintained by entity | pensionplans				1
Minimum Contribution Requirement		$ 0.0		$ 0.0
Accumulated benefit obligation at end of year		35.1		35.1	153.3
Change in benefit obligation:
Benefit obligation at beginning of year			160.4	160.4	167.6
Service cost				0.4	0.6	0.6
Interest cost				5.4	6.4	7.1
Acquisitions and divestitures				0.0	0.0
Settlements				(108.5)	0.0
Plan amendments				0.0	0.0
Actuarial loss (gain)				(8.5)	0.1
Benefits paid				(10.1)	(14.3)
Foreign Exchange effect				0.0	0.0
Benefit obligation at end of year		39.1		39.1	160.4	167.6
Change in plan assets:
Fair value of plan assets at beginning of year			$ 118.5	118.5	117.1
Actual return on plan assets				(6.0)	14.5
Settlements	$ (4.8)			(108.5)	0.0
Employer contribution				6.1	1.2
Employee contribution				0.0	0.0
Benefits paid				(10.1)	(14.3)
Foreign exchange effect				0.0	0.0
Fair value of plan assets at end of year		0.0		0.0	118.5	$ 117.1
Funded status		(39.1)		(39.1)	(41.9)
Amounts recognized in the statement of financial position consist of:
Current liabilities		1.3		1.3	1.2
Non-current liabilities		37.8		37.8	40.7
Total liabilities		39.1		39.1	41.9
Amounts recognized in accumulated other comprehensive income consist of:
Actuarial net loss		(0.9)		(0.9)	64.8
Prior service cost		0.0		0.0	0.1
Total amounts recognized in accumulated other comprehensive income		$ (0.9)		$ (0.9)	$ 64.9
Weighted-average assumptions as of December 31:
Discount rate		4.41%		4.41%	3.78%	4.03%
Expected return on plan assets		0.00%	7.00%		7.00%	7.00%
Rate of compensation increase		3.75%		3.75%	3.75%	3.75%
Components of net periodic cost:
Service cost				$ 0.4	$ 0.6	$ 0.6
Interest cost				5.4	6.4	7.1
Expected return on plan assets				(7.3)	(7.8)	(8.3)
Recognition of prior service cost				0.1	0.1	0.2
Amortization of actuarial loss				3.4	4.1	4.2
Settlements				67.0	0.0	0.0
Other				0.0	0.0	0.0
Net periodic cost				69.0	3.4	3.8
Number of plan participants | Participant							2,600
Settlement loss (after tax)				42.6
Non-U.S. Plans | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation at end of year		$ 208.5		208.5	229.4
Change in benefit obligation:
Benefit obligation at beginning of year			$ 231.6	231.6	211.5
Service cost				3.1	3.2	3.1
Interest cost				4.6	5.0	6.5
Acquisitions and divestitures				0.0	(0.1)
Settlements				(2.7)	(5.0)
Plan amendments				2.6	0.0
Actuarial loss (gain)				(8.1)	1.1
Benefits paid				(8.6)	(7.1)
Foreign Exchange effect				(11.9)	23.0
Benefit obligation at end of year		210.6		210.6	231.6	211.5
Change in plan assets:
Fair value of plan assets at beginning of year			$ 121.2	121.2	108.3
Actual return on plan assets				(4.1)	6.9
Settlements				(2.7)	(5.0)
Employer contribution				7.9	7.5
Employee contribution				0.5	0.4
Benefits paid				(8.6)	(7.1)
Foreign exchange effect				(6.7)	10.2
Fair value of plan assets at end of year		107.5		107.5	121.2	$ 108.3
Funded status		(103.1)		(103.1)	(110.4)
Amounts recognized in the statement of financial position consist of:
Current liabilities		2.7		2.7	2.8
Non-current liabilities		100.4		100.4	107.6
Total liabilities		103.1		103.1	110.4
Amounts recognized in accumulated other comprehensive income consist of:
Actuarial net loss		61.3		61.3	68.2
Prior service cost		2.7		2.7	0.1
Total amounts recognized in accumulated other comprehensive income		$ 64.0		$ 64.0	$ 68.3
Weighted-average assumptions as of December 31:
Discount rate		2.39%		2.39%	2.15%	2.27%
Expected return on plan assets				4.40%	4.43%	5.90%
Rate of compensation increase		0.98%		0.98%	0.93%	0.89%
Components of net periodic cost:
Service cost				$ 3.1	$ 3.2	$ 3.1
Interest cost				4.6	5.0	6.5
Expected return on plan assets				(5.0)	(5.0)	(6.0)
Recognition of prior service cost				0.0	0.0	0.0
Amortization of actuarial loss				3.2	3.5	2.5
Settlements				0.8	1.5	0.0
Other				(1.0)	(0.4)	(0.4)
Net periodic cost				$ 5.7	$ 7.8	$ 5.7