CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest expense	$ (240.7)	$ (244.2)	$ (235.1)
Operating income	1,330.2	1,325.7	1,305.2
Revenues	11,554.8	11,333.4	10,308.0
Cost of Revenue	8,302.3	8,157.0	7,216.2
Gross profit	3,252.5	3,176.4	3,091.8
Selling, general and administrative expenses	1,624.5	1,570.9	1,499.2
Amortization of intangibles and other assets	243.2	231.7	216.5
Restructuring and other special charges	54.6	48.1	70.9
Equity method income, net	9.8	11.6	11.3
Investment income	8.8	7.5	2.1
Other, net	(3.2)	167.7	(6.0)
Earnings before income taxes	1,104.9	1,268.3	1,077.5
Net earnings	824.9	883.9	1,232.9
Less: Net earnings attributable to the noncontrolling interest	1.1	0.2	5.8
Net earnings attributable to Laboratory Corporation of America Holdings	823.8	883.7	1,227.1
Income Tax Expense (Benefit)	$ 280.0	$ 384.4	$ (155.4)