PENSION AND POSTRETIREMENT PLANS (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Feb. 19, 2015
Defined Benefit Plan Disclosures [Line Items]
Pension Contributions	$ 0.0		$ 0.0
Minimum non-elective contribution (NEC) % for the 401(K) plan (in hundredths)	3.00%
Discretionary Contribution Percentage Mininum	1.00%
Discretionary Contribution Percentage Maximum	3.00%
Defined contribution retirement plan cost	$ 13.8	$ 13.3	27.2	$ 26.2
Pension Plan [Member]
Defined Benefit Plan and Postretirement Plan Disclosure
Service cost for benefits earned	2.4	1.9	1.2	0.9
Interest cost on benefit obligation	7.8	7.6	3.9	3.8
Expected return on plan assets	(8.4)	(9.2)	(4.2)	(4.6)
Net amortization and deferral	5.6	5.4	2.8	2.7
Defined benefit/postretirement plan costs	7.4	5.7	3.7	2.8
Postretirement Health Coverage [Member]
Defined Benefit Plan Disclosures [Line Items]
Defined Benefit Plan, Benefit Obligation					$ 6.3
Defined Benefit Plan and Postretirement Plan Disclosure
Defined benefit/postretirement plan costs	0.4	0.1	0.8	0.1
Other Pension Plan, Postretirement or Supplemental Plans [Member]
Defined Benefit Plan and Postretirement Plan Disclosure
Service cost for benefits earned	0.8	0.8	1.6	1.1
Interest cost on benefit obligation	2.2	2.3	4.4	3.0
Expected return on plan assets	(3.1)	(3.2)	(6.2)	(4.3)
Defined benefit/postretirement plan costs	$ (0.1)	$ (0.1)	$ (0.2)	$ (0.2)
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	3.80%	3.60%	3.80%	3.60%
Defined Benefit Plan Expected Rate Of Return On Assets Other Assets	5.60%	5.40%	5.60%	5.40%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase	3.60%	3.50%	3.60%	3.50%
Other Pension Plan [Member]
Defined Benefit Plan and Postretirement Plan Disclosure
Service cost for benefits earned	$ 0.2	$ 0.4	$ 0.5	$ 0.5
Interest cost on benefit obligation	0.2	0.1	0.3	0.1
Net amortization and deferral	(0.1)	0.0	(0.1)	0.0
Defined benefit/postretirement plan costs	$ 0.3	$ 0.5	$ 0.7	$ 0.6
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	2.50%	1.50%	2.50%	1.50%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase	2.00%	2.00%	2.00%	2.00%
Supplemental Employee Retirement Plan [Member]
Defined Benefit Plan Disclosures [Line Items]
Defined Benefit Plan, Benefit Obligation					$ 32.8
Defined Benefit Plan and Postretirement Plan Disclosure
Service cost for benefits earned	$ 0.0	$ 0.1	$ 0.0	$ 0.1
Interest cost on benefit obligation	0.2	0.3	0.4	0.4
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments	0.2	0.4	0.4	0.5
Other Postretirement Benefit Plan [Member]
Defined Benefit Plan and Postretirement Plan Disclosure
Service cost for benefits earned	0.0	0.0	0.0	0.1
Interest cost on benefit obligation	0.1	0.2	0.2	0.5
Net amortization and deferral	(4.2)	(2.2)	(8.0)	(4.6)
Defined benefit/postretirement plan costs	(4.1)	(2.0)	(7.8)	(4.0)
Covance [Member]
Defined Benefit Plan Disclosures [Line Items]
Defined contribution retirement plan cost	$ 12.8	$ 11.1	$ 26.5	$ 15.8