ENVIRONMENTAL (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Environmental Remediation Obligations [Abstract]
Reserves for future environmental expenditures-total	$ 144.5	$ 154.0	$ 144.5	$ 154.0	$ 146.5
Reserves for environmental expenditures-noncurrent	123.5	123.0	123.5	123.0	125.5
Environment provisions charged (credited) to income [Abstract]
Charges to income	2.4	0.3	4.2	3.2
Recoveries From Third Parties Of Costs Incurred And Expensed In Prior Periods	0	0	0	(0.1)
Total environmental expense	$ 2.4	$ 0.3	$ 4.2	$ 3.1