CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Provision for income taxes	$ 41.0	$ 55.1	$ 172.2	$ 168.8
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	169.6	183.6	603.5	547.2
Foreign currency translation adjustments	78.3	(56.0)	(53.2)	43.8
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax	1.6	1.1	(0.1)	3.4
Other comprehensive earnings (loss) before tax	79.9	(54.9)	(53.3)	47.2
Tax effect of adjustments	(1.1)	(0.2)	(0.6)	(0.8)
Other comprehensive earnings (loss), net of tax	78.8	(55.1)	(53.9)	46.4
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	0.0	0.0	0.0	38.8
Net earnings	169.6	183.6	603.5	586.0
Net Income (Loss) Attributable to Noncontrolling Interest	0.3	0.3	0.9	0.9
Net Income (Loss) Attributable to Parent	169.3	183.3	602.6	585.1
Net earnings	169.6	183.6	603.5	586.0
Comprehensive earnings	248.4	128.5	549.6	632.4
Less: Net earnings attributable to the noncontrolling interest	(0.3)	(0.3)	(0.9)	(0.9)
Comprehensive earnings attributable to Laboratory Corporation of America Holdings	$ 248.1	$ 128.2	$ 548.7	$ 631.5