SIGNIFICANT ACCOUNTING POLICIES REMEDIAL LIABILITIES (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 sites	Dec. 31, 2012	Dec. 31, 2011
Regulatory Liabilities [Line Items]
Accrual for Environmental Loss Contingencies	$ 172,498	$ 183,346	$ 135,320
Period of Time In Years Over Which Business Acquisitions Have Been Acquired	12 years
Superfund sites owned by third parties	35
Superfund sites	123
Minimum
Regulatory Liabilities [Line Items]
Remedial Liabilities at Acquisition	1.01%
Remedial Liabilities Discounted Risk Free Interest Rate	2.88%
Maximum
Regulatory Liabilities [Line Items]
Remedial Liabilities at Acquisition	2.44%
Remedial Liabilities Discounted Risk Free Interest Rate	4.90%