DISCONTINUED OPERATIONS (Details) $ in Millions	12 Months Ended
Dec. 31, 2023 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	$ 1,506.6
Cost of revenues	1,244.5
Gross profit	262.1
Selling, general, and administrative expenses	184.1
Amortization of intangibles and other assets	31.9
Restructuring and other charges	3.0
Operating income	43.1
Interest expense	(0.5)
Investment expense	(1.2)
Other, net	4.2
Earnings before income taxes	45.6
Provision for income taxes	6.8
Net earnings attributable to Labcorp Holdings Inc.	$ 38.8

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