Percent of Revenue Contributed

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- Definition

Repayment received or receivable for expenses incurred on behalf of a client or customer, other than those reimbursements received by landlords from tenants.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 45
-Section 45
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=51671805&loc=d3e60722-111653

+ Details

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

+ Details

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

+ Details

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - NET SALES (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net sales	$ 2,244.8	$ 2,269.9	$ 2,218.7	$ 1,772.3	$ 1,512.7	$ 1,551.8	$ 1,516.4	$ 1,430.7	$ 8,505.7	$ 6,011.6	$ 5,808.3
Revenues									8,680.1	6,011.6	5,808.3
Reimbursement Revenue									$ 174.4	0.0	0.0
LabCorp Diagnostics [Member]
Percent of Revenue Contributed									72.90%
Net sales									$ 6,199.3	5,838.0	5,669.4
Clinical diagnostics laboratory [Member]
Net sales									$ 6,199.3
Routine Testing [Member]
Net sales										5,838.0	5,669.4
Genomic and Esoteric Testing [Member]
Net sales										173.6	138.9
Covance Drug Development [Member]
Percent of Revenue Contributed									27.10%
Net sales									$ 2,306.4	173.6	138.9
Reimbursement Revenue									174.4	$ 0.0	$ 0.0
Other Segments [Member]
Net sales									$ 2,306.4