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RETIREMENT PLANS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Other Postretirement Benefits Plan
Defined Contribution Plan Disclosure [Line Items]
Contributions	$ 10.5	$ 1.9	$ 14.1	$ 5.4
Expected contributions	17.8		17.8		$ 8.3
Pension Plan
Defined Contribution Plan Disclosure [Line Items]
Contributions	$ 11.0	$ 10.5	$ 33.4	$ 28.0