BUSINESS ACQUISITIONS Business Acquisitions in the Aggregate (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jun. 03, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Gain (Loss) on Disposition of Assets				$ (11.9)	$ 209.4
Finite-Lived Intangible Asset, Useful Life				15 years
Revenues	$ 2,928.5		$ 2,831.3	$ 8,601.4	8,545.9
Payments to Acquire Businesses, Net of Cash Acquired				852.9	$ 79.1
Goodwill, Acquired During Period				540.0
Goodwill	7,815.3			7,815.3			$ 7,360.3
Envigo [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	$ 414.2			414.2		$ 432.2
Revenues		$ 52.0		68.5
Payments to Acquire Businesses, Net of Cash Acquired				601.0
Other acquirees [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired				263.1
Goodwill, Acquired During Period				98.1
Finite-lived Intangible Assets Acquired				$ 179.6