BUSINESS COMBINATIONS Safety-Kleen (Details) (USD $) Share data in Millions, unless otherwise specified	12 Months Ended				0 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011 Senior secured notes	Dec. 03, 2012 Safety-Kleen [Member]	Dec. 31, 2012 Safety-Kleen [Member]		Dec. 31, 2011 Safety-Kleen [Member]	Dec. 31, 2012 Safety-Kleen [Member]	Dec. 28, 2012 Safety-Kleen [Member]	Dec. 31, 2012 Safety-Kleen [Member] Senior secured notes Unsecured Senior Notes 2021
Business Acquisition [Line Items]
Outstanding common shares acquired (as a percent)										100.00%
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract]
Inventories and supplies						$ 102,339,000
Other current assets (i)						152,245,000	[1]
Property, plant and equipment						514,712,000
Permits and other intangibles						421,400,000
Other assets						4,985,000
Current liabilities						(192,652,000)
Closure and post-closure liabilities, less current portion						(15,774,000)
Remedial liabilities, less current portion						(38,370,000)
Deferred taxes, unrecognized tax benefits and other long-term liabilities						(128,375,000)
Total identifiable net assets						820,510,000
Goodwill (ii)						436,749,000	[2]			436,700,000
Total									1,257,259,000	1,300,000,000
Business Combination, Acquired Receivables, Fair Value										132,900,000
Customer receivables, gross amount due										142,800,000
Consideration purchase price										1,250,000,000
Consideration working capital										7,300,000
Threshold Amount By Which The Estimated Net Working Capital (Excluding Cash) On The Closing Date Is Compared To										50,000,000
Business Acquisition, Cost of Acquired Entity, Transaction Costs										6,300,000
Cash Consideration						300,000,000
Issuance of acquisition-related common stock, net	0	0	1,015,000			369,500,000
Stock Issued During Period, Shares, Acquisitions					6.9	6.9
Proceeds from Issuance of Private Placement						589,000,000
Long-term Debt, Gross											600,000,000
Senior secured notes, interest rate (as a percent)				7.625%							5.125%
Business Acquisition, Pro Forma Revenue						3,529,592,000		3,245,637,000
Pro forma combined net income						$ 125,425,000		$ 129,242,000

[1] The fair value of the assets acquired includes customer receivables with a preliminary aggregate fair value of $132.9 million. Combined gross amounts due were $142.8 million.

[2] Goodwill represents the excess of the fair value of the net assets acquired over the purchase price. Goodwill of $436.7 million will be assigned to specific operating segments and reporting units in the first quarter of the Company's 2013 fiscal year. None of the goodwill related to this acquisition will be deductible for tax purposes.