PENSION PLANS AND RETIREMENT BENEFITS (Details 2) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Pension Benefits
Service cost	$ 2.0	$ 2.8	$ 6.5	$ 8.6
Interest cost	15.1	12.8	46.0	38.4
Expected return on plans’ assets	(34.3)	(35.6)	(102.8)	(106.7)
Amortization of prior service cost	0.0	(0.1)	(0.4)	(0.4)
Recognized actuarial loss	9.0	13.2	26.2	39.5
Net periodic benefit (income) cost	(8.2)	(6.9)	(24.5)	(20.6)
Other Postretirement Benefits
Service cost	0.2	0.3	0.8	1.0
Interest cost	0.2	0.2	0.8	0.8
Expected return on plans’ assets	0.0	0.0	0.0	0.0
Amortization of prior service cost	0.0	0.0	0.1	0.1
Recognized actuarial loss	0.1	0.3	1.1	1.6
Net periodic benefit (income) cost	$ 0.5	$ 0.8	$ 2.8	$ 3.5