BUSINESS ACQUISITIONS (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Jun. 03, 2019	Dec. 31, 2018
Business Combination Purchase Price Allocation [Line Items]
Disposal Group, Including Discontinued Operation, Operating Income (Loss)			$ 3.4			$ 5.4
Revenues	$ 2,881.7		2,866.3		$ 5,672.9	5,714.6
Operating Income (Loss)	335.7		369.2		653.9	674.6
Other Significant Noncash Transaction, Value of Consideration Given	9.2	$ 24.7
Net Income (Loss) Attributable to Parent	190.4	$ 185.6	$ 233.8	$ 173.2	376.0	407.0
Goodwill, Acquired During Period					490.5
Goodwill	7,843.7				7,843.7			$ 7,360.3
Cash payments for laboratory-related assets					179.4	159.7
Payments to Acquire Businesses, Net of Cash Acquired					703.7	79.1
Notes Receivable, Fair Value Disclosure	110.0				110.0			$ 0.0
Total acquisition consideration (cash, stock, notes, etc.)							$ 711.0
Gain (Loss) on Disposition of Assets					(8.8)	$ 0.0
Envigo [Member]
Business Combination Purchase Price Allocation [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents							15.1
Revenues					16.5
Operating Income (Loss)					0.7
Payments to Acquire Businesses, Net of Cash Acquired					601.0
Notes Receivable, Fair Value Disclosure	$ 110.0				$ 110.0
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life					11 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables							16.5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other							26.5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory							4.5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets							3.5
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets							25.5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment							99.1
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net							432.2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles							125.8
Indefinite-Lived Trade Names							0.6
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets							9.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets							759.2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable							15.4
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other							11.6
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deferred Revenue							49.9
Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Lease Obligation							15.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities							66.3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities							158.2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net							$ 601.0