RESTRUCTURING AND OTHER SPECIAL CHARGES	3 Months Ended
RESTRUCTURING AND OTHER SPECIAL CHARGES	Mar. 31, 2012
Restructuring and Related Activities [Abstract]
Restructuring and Other Special Charges	RESTRUCTURING AND OTHER SPECIAL CHARGES During the first three months of 2013, the Company recorded net restructuring charges of $7.5. The charges were comprised of $7.6 in severance and other personnel costs along with $1.8 in costs associated with facility closures and general integration initiatives. These charges were offset by the reversal of previously established reserves of $0.6 in unused severance and $1.3 in unused facility-related costs. During the first three months of 2012, the Company recorded a net credit of $3.6 in restructuring and other special charges. The Company reversed previously established reserves of $3.8 in unused severance and $2.4 in unused facility related costs. This net credit also includes charges of $1.7 related to severance and other personnel costs, and $0.9 primarily related to facility-related costs primarily related to ongoing integration activities for Orchid Cellmark Inc. ("Orchid") and the Integrated Genetics Division (formerly Genzyme Genetics). Genzyme Genetics and its logo are trademarks of Genzyme Corporation and used by Esoterix Genetic Laboratories, LLC, a wholly-owned subsidiary of LabCorp, under license. Esoterix Genetic Laboratories and LabCorp are operated independently from Genzyme Corporation.

Tabular disclosure of restructuring and related costs by type of restructuring including the description of the restructuring costs, such as the expected cost; the costs incurred during the period; the cumulative costs incurred as of the balance sheet date; the income statement caption within which the restructuring charges recognized for the period are included; and changes to an entity's restructuring reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost.

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