COMMITMENTS AND CONTINGENCIES (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Future minimum operating leases [Abstract]
2014	$ 52.8
2015	44.7
2016	39.0
2017	31.1
2018	25.0
Thereafter	44.4
Total operating leases	237.0
Future minimum purchase commitments [Abstract]
2014	79.5
2015	20.9
2016	2.9
2017	0
2018	0
Thereafter	0
Total purchase commitments	103.3
Total rent expense charged to operations	64.2	60.5	53.8
Length of brine and pipeline purchase agreement with PetroLogistics (in years)	20
Fixed annual payment over the life of the contract for the use of the pipeline	2.0
Amount of the minimum usage requirement for brine over the first five-year period of the contract	8.4
Amount of buy out provision exercisable by Company after first five-year period	12.0
Legal action liabilities	19.3	15.2
Customer contract settlement	11.0
Recovery of legacy legal costs	$ 13.9