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COMMITMENTS AND CONTINGENCIES (Details) CAD in Millions | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2017 USD ($) site proceeding claim | Dec. 31, 2012 CAD | Dec. 31, 1999 municipality | Dec. 31, 1968 permit | Dec. 31, 2016 USD ($)
Contingencies [Line Items] |  |  |  |  |
Recorded reserves for actual or probable liabilities | $ | $ 20,800,000 |  |  |  | $ 22,000,000
Number of pending personal injury claims allegedly resulting from the use of Safety-Kleen's products | proceeding | 62 |  |  |  |
Number of product liability claims settled or dismissed | claim | 17 |  |  |  |
Legal and Administrative Proceedings |  |  |  |  |
Contingencies [Line Items] |  |  |  |  |
Recorded reserves for actual or probable liabilities | $ | $ 17,700,000 |  |  |  | 18,200,000
Possible increase in legal and administrative proceedings | $ | $ 1,800,000 |  |  |  | 1,900,000
Ville Mercier |  |  |  |  |
Contingencies [Line Items] |  |  |  |  |
Number of permits issued by government, for dumping organic liquid | permit |  |  |  | 2 |
Number of neighboring municipalities filing separate legal proceedings against the Mercier Subsidiary and the Government of Quebec | municipality |  |  | 3 |  |
General damages sought | CAD |  | CAD 2.9 |  |  |
Punitive damages sought | CAD |  | CAD 10.0 |  |  |
Superfund Proceedings |  |  |  |  |
Contingencies [Line Items] |  |  |  |  |
Number of sites owned by third party excluded from cleanup or related liabilities | 129 |  |  |  |
Number of sites owned by the entity subject to proceedings under federal or state superfund laws | 3 |  |  |  |
Notices received from owners of third party sites seeking indemnification from the company | 126 |  |  |  |
Number of sites for which environmental remediation expense is settled | 33 |  |  |  |
Third party sites requiring expenditure on remediation | 16 |  |  |  |
Number of sites not currently requiring expenditures on remediation | 77 |  |  |  |
Number of sites which potential liability could exceed $100,000 | 11 |  |  |  |
Notices received from owners of third party sites seeking indemnification from the company | 17 |  |  |  |
Superfund Proceedings | Minimum |  |  |  |  |
Contingencies [Line Items] |  |  |  |  |
Minimum potential liability | $ | $ 100,000 |  |  |  |
ChemWaste |  |  |  |  |
Contingencies [Line Items] |  |  |  |  |
Indemnification agreement with third party sites | 11 |  |  |  |
Safety-Kleen |  |  |  |  |
Contingencies [Line Items] |  |  |  |  |
Notices received from owners of third party sites seeking indemnification from the company | 6 |  |  |  |
Federal and State Enforcement Actions |  |  |  |  |
Contingencies [Line Items] |  |  |  |  |
Recorded reserves for actual or probable liabilities | $ | $ 3,100,000 |  |  |  | $ 3,800,000
Number of pending personal injury claims allegedly resulting from the use of Safety-Kleen's products | proceeding | 5 |  |  |  |
Federal and State Enforcement Actions | Minimum |  |  |  |  |
Contingencies [Line Items] |  |  |  |  |
Minimum potential liability | $ | $ 100,000 |  |  |  |

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