CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Provision for income taxes	$ 68.4	$ 180.4	$ 333.9	$ 614.7
Net earnings	353.2	587.8	1,204.2	1,825.9
Other Comprehensive Earnings, Net of Tax
Foreign currency translation adjustments	(256.5)	(91.6)	(572.2)	(114.6)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax	1.3	2.6	4.2	7.7
Other comprehensive earnings (loss) before tax	(255.2)	(89.0)	(568.0)	(106.9)
Tax effect of adjustments	(0.3)	(0.7)	(1.1)	(2.1)
Other comprehensive earnings (loss), net of tax	(255.5)	(89.7)	(569.1)	(109.0)
Comprehensive earnings	97.7	498.1	635.1	1,716.9
Less: Net earnings attributable to the noncontrolling interest	(0.4)	(0.5)	(1.2)	(1.6)
Comprehensive earnings attributable to Laboratory Corporation of America Holdings	$ 97.3	$ 497.6	$ 633.9	$ 1,715.3