PENSION AND POSTRETIREMENT PLANS Defined Contribution Plans (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Defined Benefit Plan Disclosure [Line Items]
Non Elective Contribution	3.00%
Discretionary Contribution Percentage Minimum	1.00%
Defined Contribution Plan Total Expense	$ 14.0	$ 16.7	$ 41.4	$ 48.9
Discretionary Contribution Percentage Maximum	3.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	4.50%
Covance [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Cost	$ 21.0	$ 18.2	$ 64.8	$ 56.0