SIGNIFICANT ACCOUNTING POLICIES GOODWILL AND INTANGIBLE ASSETS (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Amortization Expense	$ 17,200,000	$ 12,400,000	$ 10,900,000
Goodwill	593,771,000	122,392,000	60,252,000
Waste Facilities [Member]
Finite-Lived Intangible Assets [Line Items]
Facilities	1
Minimum | Permits [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Life	5 years
Minimum | Other intangible assets
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Life	3 years
Maximum | Permits [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Life	30 years
Maximum | Other intangible assets
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Life	20 years
Oil and Gas Field Services
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 39,762,000	$ 30,306,000
Percentage Fair Value Exceeded Carrying Value	10.00%