EMPLOYEE BENEFIT PLANS - Schedule of Components of Net Period Benefit Cost (Income) Recognized (Details) - Pension Benefits - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Components of net periodic benefit cost (income):
Service cost	$ 2.8	$ 2.7	$ 3.1
Interest cost	18.4	18.2	19.6
Expected return on plan assets	(21.9)	(24.1)	(25.5)
Amortization of prior service cost	(0.1)	(0.1)	(0.1)
Mark-to-market actuarial net gains	(8.7)	(2.9)	(2.8)
Net periodic income	$ (9.5)	$ (6.2)	$ (5.7)