SUPPLEMENTAL CASH FLOW INFORMATION - Supplemental Information Referable to Condensed Consolidated Statements of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Cash Payments
Interest (exclusive of amount capitalized)	$ 38.8	$ 23.9
Income taxes	2.6	(0.7)
Noncash Investing and Financing Activities
Accruals for purchases of property, plant & equipment	18.9	28.0
Operating lease right-of-use assets	13.8	11.5
Finance lease right-of-use assets	$ 0.9	$ 0.6

Future cash outflow to pay for purchases of fixed assets that have occurred.

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