GOODWILL AND OTHER INTANGIBLE ASSETS GOODWILL AND OTHER INTANGIBLE ASSETS (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended		3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Depreciation and amortization	Sep. 30, 2013 Depreciation and amortization
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in the carrying amount of goodwill	$ 0	$ 0
Goodwill impairment loss	0
Contractual service agreements
Contractual service agreements, gross carrying amount	15.6
Contractual service agreements, accumulated amortization	1.2
Contractual service agreements, net carrying amount	14.4
Amortization period	P7Y
Amortization expense			0.6	1.2
Amortization expense for the next five fiscal years
Amortization expense, 2013			1.8	1.8
Amortization expense, 2014			2.2	2.2
Amortization expense, 2015			2.2	2.2
Amortization expense, 2016			2.2	2.2
Amortization expense, 2017			$ 2.2	$ 2.2