PENSION PLANS (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 1.2	$ 1.6
After-tax benefit (charge) to shareholders' equity	11.9	(37.2)
Pretax benefit (charge) to shareholders' equity	16.4	$ (59.9)	$ (245.9)
Basis point increase (decrease) in the plans' discount rate reflected in benefit (charge) to shareholders' equity - domestic		260
Actuarial loss (gain)	62.0	$ (669.8)
Benefit obligation	2,148.2	2,119.5	2,888.3
Projected benefit payments [Abstract]
Par outstanding value of bonds used to determine the discount rate yield curve	$ 250.0
Historic rate of return on plan assets in the last 5 year period	6.70%
Historic rate of return on plan assets in the last 10 year period	6.70%
Historic rate of return on plan assets in the last 15 year period	7.80%
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment	$ (7.5)	0.0
Qualified plans
Projected benefit payments [Abstract]
2023	152.2
2024	143.6
2025	137.8
2026	132.3
2027	126.0
Non-qualified plans
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation	3.7	4.2
Projected benefit payments [Abstract]
2023	0.6
2024	0.4
2025	0.4
2026	0.3
2027	$ 0.2
U.S.
Defined Benefit Plan Disclosure [Line Items]
Basis point increase (decrease) in the plans' discount rate reflected in benefit (charge) to shareholders' equity - domestic	30
U.S. | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 0.2	0.2
Actuarial loss (gain)	47.1	(556.1)
Benefit obligation	$ 1,871.1	$ 1,868.4	$ 2,506.0
Projected benefit payments [Abstract]
Discount rate—periodic benefit cost	5.50%	2.90%	2.40%
Expected return on plans’ assets	6.75%	6.75%	7.25%
Rate of compensation increase	3.00%	3.00%	3.00%
Discount rate—benefit obligation	5.20%	5.50%	2.90%
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment	$ 0.0	$ 0.0
Foreign
Defined Benefit Plan Disclosure [Line Items]
Basis point increase/decrease in the plans' discount rate reflected in charge to shareholders' equity - international	(50)	230
Foreign | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 1.0	$ 1.4
Actuarial loss (gain)	14.9	(113.7)
Benefit obligation	$ 277.1	$ 251.1	$ 382.3
Projected benefit payments [Abstract]
Discount rate—periodic benefit cost	3.70%	1.40%	0.80%
Expected return on plans’ assets	4.40%	3.80%	4.20%
Rate of compensation increase	3.40%	3.00%	3.00%
Discount rate—benefit obligation	3.20%	3.70%	1.40%
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment	$ (7.5)	$ 0.0
Foreign | Qualified plans
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	1.0	$ 1.3	$ 1.1
Foreign | Qualified plans | Maximum
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	$ 5.0