CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues	$ 3,896,100,000	$ 2,928,500,000	$ 9,488,700,000	$ 8,601,400,000
Cost of Revenue	2,336,700,000	2,111,200,000	6,440,800,000	6,169,600,000
Gross Profit	1,559,400,000	817,300,000	3,047,900,000	2,431,800,000
Selling, general and administrative expenses	419,500,000	401,500,000	1,211,300,000	1,210,600,000
Amortization of intangibles and other assets	62,200,000	61,700,000	184,600,000	179,000,000.0
Asset Impairment Charges	23,500,000	0	460,900,000	0
Net restructuring and other special charges	7,100,000	14,200,000
Operating Income (Loss)	1,047,100,000	339,900,000	1,152,200,000	993,800,000
Other income (expenses):
Interest expense	(51,400,000)	(60,500,000)	(159,100,000)	(176,300,000)
Equity method income, net	3,000,000.0	2,400,000	(1,800,000)	7,900,000
Investment income	2,600,000	2,900,000	7,700,000	4,800,000
Other, net	(54,200,000)	2,700,000	(22,600,000)	(18,200,000)
Earnings before income taxes	947,100,000	287,400,000	976,400,000	812,000,000.0
Provision for income taxes	243,400,000	66,400,000	358,000,000.0	214,400,000
Net earnings	703,700,000	221,000,000.0	618,400,000	597,600,000
Less: Net earnings attributable to the noncontrolling interest	(300,000)	(300,000)	(600,000)	(900,000)
Net earnings attributable to Laboratory Corporation of America Holdings	$ 703,400,000	$ 220,700,000	$ 617,800,000	$ 596,700,000
Basic earnings per common share (in dollars per share)	$ 7.22	$ 2.26	$ 6.35	$ 6.08
Diluted earnings per common share (in dollars per share)	$ 7.17	$ 2.25	$ 6.31	$ 6.04