EMPLOYEE BENEFIT PLANS (Net Periodic Benefit Cost) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 53.4	$ 48.1	$ 55.6
Interest cost	20.3	17.7	7.9
Expected return on plan assets	(24.4)	(19.2)	(17.5)
Amortization of prior service cost and actuarial loss	0.3	0.0	0.1
Net periodic benefit cost	49.6	46.6	46.1
Post-Retirement Medical Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.9	0.5	0.8
Interest cost	0.9	0.7	0.3
Expected return on plan assets	0.0	0.0	0.0
Amortization of prior service cost and actuarial loss	0.5	0.1	0.4
Net periodic benefit cost	$ 2.3	$ 1.3	$ 1.5