PENSION PLANS AND RETIREMENT BENEFITS (Details 1) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 2.8	$ 2.8	$ 8.6	$ 8.5
Interest cost	12.8	18.8	38.4	56.3
Expected return on plans’ assets	(35.6)	(35.5)	(106.7)	(106.7)
Amortization of prior service cost	(0.1)	0.0	(0.4)	0.0
Recognized actuarial loss	13.2	11.2	39.5	33.5
Net periodic benefit (income) cost	(6.9)	(2.7)	(20.6)	(8.4)
Other Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	0.3	0.2	1.0	0.9
Interest cost	0.2	0.3	0.8	1.0
Expected return on plans’ assets	0.0	0.0	0.0	0.0
Amortization of prior service cost	0.0	0.0	0.1	0.0
Recognized actuarial loss	0.3	0.3	1.6	1.5
Net periodic benefit (income) cost	$ 0.8	$ 0.8	3.5	3.4
Foreign Plan | Qualified Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Contributions by Employer			$ 1.0	$ 1.3