PENSION PLANS AND RETIREMENT BENEFITS (Details 2) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Pension Benefits
Service cost	$ 1.4	$ 2.3
Interest cost	26.3	15.4
Expected return on plans’ assets	(32.9)	(34.2)
Amortization of prior service cost	(0.1)	(0.2)
Recognized actuarial loss	0.3	8.6
Net periodic benefit (income) cost	(5.0)	(8.1)
Other Postretirement Benefits
Service cost	0.2	0.3
Interest cost	0.5	0.3
Expected return on plans’ assets	0.0	0.0
Amortization of prior service cost	0.0	0.0
Recognized actuarial loss	0.2	0.5
Net periodic benefit (income) cost	$ 0.9	$ 1.1