CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest expense	$ (244.2)	$ (235.1)	$ (219.1)
Operating income	1,325.7	1,305.2	1,270.6
Revenues	11,333.4	10,308.0	9,552.9
Cost of Revenue	8,157.0	7,216.2	6,698.9
Gross profit	3,176.4	3,091.8	2,854.0
Selling, general and administrative expenses	1,570.9	1,499.2	1,345.5
Amortization of intangibles and other assets	231.7	216.5	179.5
Restructuring and other special charges	48.1	70.9	58.4
Equity method income, net	11.6	11.3	7.9
Investment income	7.5	2.1	1.7
Other, net	167.7	(6.0)	12.5
Earnings before income taxes	1,268.3	1,077.5	1,073.6
Net earnings	883.9	1,232.9	712.9
Less: Net earnings attributable to the noncontrolling interest	0.2	5.8	1.1
Net earnings attributable to Laboratory Corporation of America Holdings	883.7	1,227.1	711.8
Income Tax Expense (Benefit)	$ 384.4	$ (155.4)	$ 360.7