SUPPLEMENTAL CASH FLOW INFORMATION (Supplemental Information Referable to Condensed Consolidated Statements of Cash Flows) (Details) - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021
SUPPLEMENTAL CASH FLOW INFORMATION [Abstract]
Interest (exclusive of amount capitalized)		$ 72.6	$ 65.2
Income taxes		112.2	87.4
Accrued liabilities for purchases of property, plant & equipment		38.4	27.0
Recognition of new and revised asset retirement obligations	[1]	2.1	1.7
Recognition of new and revised lease obligations for: Operating leases	[1]	23.4	67.6
Recognition of new and revised lease obligations for: Finance leases	[1]	2.8	3.3
Amounts referable to business acquisitions, Other liabilities assumed		15.1	0.0
Amounts referable to business acquisitions, Consideration payable to seller		$ 45.4	$ 0.0

[1] Excludes amounts acquired in business acquisitions