ACCOUNTING POLICIES (Details 5) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill [Roll Forward]
Goodwill	$ 747.1	$ 747.1	$ 627.4
Goodwill, Acquired During Period	0	119.7
Chlor Alkali Products [Member]
Goodwill [Roll Forward]
Goodwill	627.4	627.4	627.4
Goodwill, Acquired During Period	0	0
Chemical Distribution [Member]
Goodwill [Roll Forward]
Goodwill	119.7	119.7	0
Goodwill, Acquired During Period	$ 0	$ 119.7