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BUSINESS ACQUISITIONS (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 Laboratories and Related Assets [Member]	Jun. 04, 2012 MEDTOX [Member]	Jul. 31, 2012 Acquisition [Member] MEDTOX [Member]
Business Acquisition [Line Items]
Business acquisition, purchase price (per share)				$ 27.00
Business acquisition, purchase price				$ 241.0
Business Acquisition, Cost of Acquired Entity, Cash Paid					248.2
Cash payments for laboratory-related assets	$ 68.3	$ 75.2	$ 25.2

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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