CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net earnings	$ 824.9	$ 883.9	$ 1,232.9
Foreign currency translation adjustments	104.4	(176.6)	265.1
Net benefit plan adjustments	(17.4)	29.3	20.9
Other comprehensive earnings (loss) before tax	87.0	(147.3)	286.0
Provision (benefit) for income tax related to items of comprehensive earnings	3.7	17.9	(37.8)
Other comprehensive earnings (loss), net of tax	90.7	(129.4)	248.2
Comprehensive earnings	915.6	754.5	1,481.1
Less: Net earnings attributable to the noncontrolling interest	(1.1)	(0.2)	(5.8)
Comprehensive earnings attributable to Laboratory Corporation of America Holdings	$ 914.5	$ 754.3	$ 1,475.3