RETIREMENT PLANS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Other Postretirement Benefits Plan
Defined Contribution Plan Disclosure [Line Items]
Contributions	$ 3.0	$ 2.0	$ 5.5	$ 7.1
Expected contributions	18.7		18.7		$ 15.5
Pension Plan
Defined Contribution Plan Disclosure [Line Items]
Contributions	$ 6.4	$ 5.5	$ 19.6	$ 12.8