PENSION, HEALTH CARE AND OTHER POSTRETIREMENT BENEFITS - Summary of the Components of the Net Pension Costs and Cumulative Other Comprehensive Loss Related to the Defined Benefit Pension Plans (Details) - Defined Benefit Pension - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Domestic
Net periodic pension (credit) cost:
Service cost	$ 2.4	$ 2.9	$ 3.0
Interest cost	5.2	4.9	4.6
Expected return on plan assets	(9.5)	(8.3)	(7.3)
Amortization of prior service cost (credit)	2.2	1.9	1.3
Amortization of actuarial gains	(2.1)	(0.5)	0.0
Ongoing periodic pension (credit) cost	(1.8)	0.9	1.6
Settlement credits	0.0	0.0	0.0
Curtailment cost	0.0	0.0	0.0
Net periodic pension (credit) cost	(1.8)	0.9	1.6
Other changes in plan assets and projected benefit obligation recognized in AOCI (before taxes):
Net actuarial (gains) losses arising during the year	(11.0)	(20.9)	(8.6)
Prior service cost arising during the year	1.3	1.0	3.0
Amortization of actuarial gains	2.1	0.5	0.0
Amortization of prior service (cost) credit	(2.2)	(1.9)	(1.3)
Loss recognized for settlement	0.0	0.0	0.0
Effect of foreign exchange	0.0	0.0	0.0
Total recognized in AOCI	(9.8)	(21.3)	(6.9)
Total recognized in net periodic pension (credit) cost and AOCI	(11.6)	(20.4)	(5.3)
Foreign
Net periodic pension (credit) cost:
Service cost	4.6	4.6	4.4
Interest cost	13.3	11.8	11.8
Expected return on plan assets	(10.8)	(11.1)	(12.3)
Amortization of prior service cost (credit)	(0.2)	(0.1)	(0.2)
Amortization of actuarial gains	(1.2)	(1.3)	(1.5)
Ongoing periodic pension (credit) cost	5.7	3.9	2.2
Settlement credits	0.0	0.0	(1.1)
Curtailment cost	0.0	7.1	0.0
Net periodic pension (credit) cost	5.7	11.0	1.1
Other changes in plan assets and projected benefit obligation recognized in AOCI (before taxes):
Net actuarial (gains) losses arising during the year	(1.1)	(8.0)	5.8
Prior service cost arising during the year	0.0	6.9	1.1
Amortization of actuarial gains	1.2	1.3	1.5
Amortization of prior service (cost) credit	0.2	(7.0)	0.2
Loss recognized for settlement	0.0	0.0	1.1
Effect of foreign exchange	(2.9)	1.6	(1.5)
Total recognized in AOCI	(2.6)	(5.2)	8.2
Total recognized in net periodic pension (credit) cost and AOCI	$ 3.1	$ 5.8	$ 9.3