COMMITMENTS AND CONTINGENCIES (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			0 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Mar. 04, 2013 New York State Department Of Taxation And Finance	Aug. 15, 2010 New Jersey Division Of Taxation	Dec. 31, 2013 Income Tax Related Contingency [Member]	Dec. 31, 2013 Supply Commitment for Telecommunication Services
Commitments and Contingencies Disclosure [Abstract]
Future minimum lease payments related to restructuring efforts	$ 0.3
Rent expense under operating leases	11.9	11.1	11.4
Contractual obligations previously expensed through restructuring	0.5	1.2	1.6
Increase in asset retirement obligation as a result of increased remediation costs	0
Asset retirement liability	1.2	1.2
Supply Commitment [Line Items]
Future minimum purchase agreement 2014							9.1
Future minimum purchase agreement 2015							1.3
Future minimum purchase agreement 2016							0.7
Minimum purchase requirement for prior year	7.4	28.5	51.0
Income Tax Contingency [Line Items]
Tax assessed				4.3	6.2
Contingent taxes owed				1.9	2.4
Contingent interest and penalties owed				2.4	3.8
Loss Contingency Accrual						$ 3.9