CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Provision for income taxes	$ 49.8	$ 92.1	$ 113.7	$ 222.6
Net earnings	189.1	358.9	402.4	851.0
Other Comprehensive Earnings, Net of Tax
Foreign currency translation adjustments	51.7	(241.1)	99.8	(315.7)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax	1.1	0.7	2.3	2.9
Other comprehensive earnings (loss) before tax	52.8	(240.4)	102.1	(312.8)
Tax effect of adjustments	(0.3)	(0.2)	(0.6)	(0.8)
Other comprehensive earnings (loss), net of tax	52.5	(240.6)	101.5	(313.6)
Comprehensive earnings	241.6	118.3	503.9	537.4
Less: Net earnings attributable to the noncontrolling interest	(0.2)	(0.3)	(0.6)	(0.8)
Comprehensive earnings attributable to Laboratory Corporation of America Holdings	$ 241.4	$ 118.0	$ 503.3	$ 536.6