CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Net restructuring and other special charges	$ 5.0	$ 7.5
Operating Income (Loss)	321.3	329.8
Interest Expense	46.9	50.7
Equity method income, net	0.1	(2.1)
Investment income	2.9	2.2
Other, net	20.0	(6.9)
Earnings before income taxes	297.4	272.3
Provision for income taxes	69.1	63.9
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	228.3	208.4
Net earnings	228.3	213.3
Net Income (Loss) Attributable to Noncontrolling Interest	0.3	0.4
Net Income (Loss) Attributable to Parent	$ 228.0	$ 212.9
Income (Loss) from Continuing Operations, Per Basic Share	$ 2.71	$ 2.35
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share	0	0.06
Basic earnings per common share (in dollars per share)	2.71	2.41
Diluted earnings per common share (in dollars per share)	$ 2.69	$ 2.39
Revenues	$ 3,176.6	$ 3,037.8
Cost of Revenue	2,279.3	2,187.7
Gross Profit	897.3	850.1
Selling, general and administrative expenses	508.4	457.2
Amortization of intangibles and other assets	60.1	53.4
Asset Impairment Charges	2.5	2.2
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ 0.0	$ 4.9
Income (Loss) from Continuing Operations, Per Diluted Share	$ 2.69	$ 2.34
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share	$ 0	$ 0.05
Revenues	$ 3,176.6	$ 3,037.8
Cost of Revenue	2,279.3	2,187.7
Gross Profit	897.3	850.1
Selling, general and administrative expenses	508.4	457.2
Amortization of intangibles and other assets	60.1	53.4
Asset Impairment Charges	2.5	2.2
Net restructuring and other special charges	5.0	7.5
Operating Income (Loss)	321.3	329.8
Earnings before income taxes	297.4	272.3
Provision for income taxes	69.1	63.9
Net earnings	228.3	213.3
Less: Net earnings attributable to the noncontrolling interest	(0.3)	(0.4)
Net earnings attributable to Laboratory Corporation of America Holdings	$ 228.0	$ 212.9
Basic earnings per common share (in dollars per share)	$ 2.71	$ 2.41
Diluted earnings per common share (in dollars per share)	$ 2.69	$ 2.39