COMMITMENTS AND CONTINGENCIES (Details)			6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended				6 Months Ended	1 Months Ended	6 Months Ended		12 Months Ended	6 Months Ended	12 Months Ended			6 Months Ended
	Jun. 30, 2013 USD ($)	Dec. 31, 2012 USD ($)	Jun. 30, 2013 Legal and Administrative Proceedings USD ($)	Dec. 31, 2012 Legal and Administrative Proceedings USD ($)	Jun. 30, 2013 Ville Mercier CAD Municipalities	Dec. 31, 1999 Ville Mercier Municipalities	Dec. 31, 1968 Ville Mercier Permits	Jun. 30, 2013 Ville Mercier USD ($)	Dec. 31, 2012 Ville Mercier USD ($)	Jun. 30, 2013 Product Liability Cases [Member] Safety-Kleen [Member] claims Lawsuits	Oct. 31, 2010 Fees Class Action Claims [Member] Safety-Kleen [Member] customer	Jun. 30, 2013 Superfund Proceedings USD ($) Sites	Jun. 30, 2013 Superfund Proceedings McKesson Corporation [Member] Sites	Dec. 26, 2012 Superfund Proceedings The Company [Member] Sites	Jun. 30, 2013 Superfund Proceedings Safety-Kleen [Member] Sites	Dec. 31, 2002 Wichita Property [Member] A	Jun. 30, 2013 Marine Shale Site [Member] USD ($)	Dec. 31, 2012 Marine Shale Site [Member] USD ($)	Jun. 30, 2013 Certain Other Third Party Sites [Member] Sites	Jun. 30, 2013 Certain Other Third Party Sites [Member] ChemWaste [Member] Sites	Jun. 30, 2013 Federal and State Enforcement Actions [Member] USD ($) Proceedings	Dec. 31, 2012 Federal and State Enforcement Actions [Member] Proceedings
Contingencies [Line Items]
Reserves relating to legal and administrative proceedings	$ 42,200,000	$ 38,600,000	$ 34,400,000																		$ 7,800,000
Possible increase in legal and administrative proceedings			3,500,000	3,500,000
Number of permits issued by government, for dumping organic liquid							2
Number of neighboring municipalities filing separate legal proceedings against the Mercier Subsidiary and the Government of Quebec						3
Total number of municipalities filings separate legal proceedings					4
Damages claimed by municipalities					1,600,000
Suit against alleged past costs					17,400,000
Accrued remedial liabilities	171,721,000	167,220,000						13,400,000	14,200,000
Number of lawsuits filed											2
Third party sites arising out of acquisition of assets												35
Third party sites requiring expenditure on remediation												6
Number of pending personal injury claims allegedly resulting from the used of Safety-Kleen's products										64											5	5
Number of product liability claims settled or dismissed										19
Number of sites owned by third party excluded from cleanup or related liabilities												121
Number of sites owned by the entity subject to proceedings under federal or state superfund laws												2
Remaining reserves relating to listed third party sites																	4,600,000	4,400,000
Indemnification agreement with third party sites													5						16	11
Notices received from owners of third party sites seeking indemnification from the company												119
Number of sites where potential liability could exceed the $100,000 threshold												12
Additional cleanup liabilities, maximum												$ 100,000									$ 100,000
Number of sites owned by a third party where Company was notified it is a PRP or potential PRP														69	50
Number of sites for which environmental remediation expense is settled												13
Site Contingency, Not Requiring Environmental Remediation Expense Number of Sites Owned by Third Party												16
Number of sites owned by third party excluded from cleanup or related liabilities												1
State-designated superfund site acquired, total acres																1,400