FINANCIAL INSTRUMENTS AND RISK MANAGEMENT - Narrative (Details) metricTon in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2026 USD ($) metricTon	Mar. 31, 2025 USD ($)	Dec. 31, 2025 USD ($) metricTon
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Other operating expense (income)	$ (31.8)	$ 0.2
Recognized earnings	29.6	8.3
Mark - to - market gain (loss)	0.8	0.3
Translation adjustments of hedges	(1.1)	0.1
Short-term investments	349.9		$ 99.5
Short term investments, fair value	349.9		99.6
Purge Rite Intermediate, LLC
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Other operating expense (income)	(33.2)
Interest rate swaps
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative, notional amount			1,000.0
Foreign Exchange Contract
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Realized gain (losses)	3.5	(4.7)
Foreign Exchange Contract | Economic hedges
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative, notional amount	309.0		$ 149.8
Foreign Exchange Contract | Economic hedges | Net Investment Hedging
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative, notional amount	$ 42.9	$ 24.1
Economic hedges | Aluminum
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative nonmonetary amounts | metricTon	10,789.0		10,310.0
Economic hedges | Copper
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative nonmonetary amounts | metricTon	17,971.0		8,754.8