COMMITMENTS, CONTINGENCIES AND OFF-BALANCE-SHEET ARRANGEMENTS (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Commitments and Contingencies Disclosure [Line Items]
Operating lease, future minimum lease payments	$ 203.7
Rent expense	29.7	30.2	35.6
Executive Officer One
Commitments and Contingencies Disclosure [Line Items]
Terms of employment and compensation agreement with a key officer	An agreement for one of the officers provides for the officer to earn a minimum of $0.9 per year through a three-year period ending from any date after which it is measured, adjusted annually as determined by the Company's Compensation Committee of the Board of Directors, as well as a retirement compensation payment equal to 100% of the base salary.
Retirement compensation payment factor of base salary	100.0
Executive Officer One | Minimum
Commitments and Contingencies Disclosure [Line Items]
Annual earning of a key officer	0.9
Executive Officer Two
Commitments and Contingencies Disclosure [Line Items]
Terms of employment and compensation agreement with a key officer	One other agreement provides for an officer to receive annual minimum compensation of $1.0 per year through a three-year period ending from any date after which it is measured, adjusted annually as determined by the Company's Compensation Committee of the Board of Directors, and to receive a retirement compensation payment equal to 27.5% of the officer's average three years' annual salary (as defined).
Retirement compensation payment, percentage of the three years' annual salary	27.50%
Real Estate
Commitments and Contingencies Disclosure [Line Items]
Operating lease, future minimum lease payments	$ 171.9