PENSION AND POSTRETIREMENT PLANS (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Defined Benefit Plan Disclosures [Line Items]
Pension Contributions	$ 0
Minimum non-elective contribution (NEC) % for the 401(K) plan (in hundredths)	3.00%
Discretionary contribution % for the 401(K) plan, range mininum	1.00%
Discretionary contribution % for the 401(K) plan, range maximum	3.00%
Defined contribution retirement plan cost	13.4	12.9
Defined Benefit Plans [Member]
Defined Benefit Plan and Postretirement Plan Disclosure
Service cost for benefits earned	0.9	0.6
Interest cost on benefit obligation	3.9	3.7
Expected return on plan assets	(4.4)	(4.3)
Net amortization and deferral	1.8	3.0
Defined benefit/postretirement plan costs	2.2	3.0
Post-Retirement Medical Plan [Member]
Defined Benefit Plan and Postretirement Plan Disclosure
Service cost for benefits earned	0.1	0.1
Interest cost on benefit obligation	0.4	0.6
Net amortization and deferral	(1.9)	0.2
Defined benefit/postretirement plan costs	$ (1.4)	$ 0.9