BUSINESS ORGANIZATION AND STATEMENT OF ACCOUNTING POLICIES, STOCK BASED COMPENSATION (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Jun. 30, 2013 Management [Member] Performance Shares [Member]	Mar. 31, 2013 Management [Member] Performance Shares [Member]	Mar. 31, 2013 President and Chief Executive Officer [Member] Restricted Stock [Member]	Jun. 30, 2013 Vice President Information Technology and Chief Information Officer [Member] Restricted Stock [Member]	Jun. 30, 2013 Non-employee director [Member] Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (in shares)					5,860	101,150	2,033	2,177	21,558
Weighted average grant date fair value (in dollars per share)					$ 41.34	$ 38.73	$ 38.73	$ 41.34	$ 40.69
Vesting period							5 years
Vesting rights							equal annual installments over a five year period
Total stock-based compensation expense	$ 1.1	$ 0.2	$ 4.1	$ 3.9