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Nominal or face amount used to calculate payment on derivative.

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DERIVATIVE INSTRUMENTS - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross long-term debt	$ 5,391.1	$ 3,941.5
Cash flow hedges	(17.7)	(19.4)		$ (21.0)
Interest rate swaps
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount of interest rate swap agreements			$ 550.0
Interest rate swaps \| Cash Flow Hedges \| Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Estimated amount of pretax loss in AOCI reclassified to earnings for the next 12-month period	2.4
Notes
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross long-term debt	5,391.1
5.80% notes due 2026 \| Notes
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross long-term debt	$ 0.0	$ 550.0	$ 550.0
Interest rate (as percent)		5.80%	5.80%