Business Combinations [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Safety-Kleen [Member] Safety-Kleen [Member] Safety-Kleen [Member] Other 2012 Acquisitions [Member] Series of Individually Immaterial Business Acquisitions [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Summary of recognized amounts of identifiable assets acquired and liabilities assumed Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Business Acquisition, Pro Forma Combined Information Business Acquisition, Pro Forma Combined Information [Table Text Block] Tabular disclosure of unaudited pro forma combined summary data presenting information as if the acquiree had been acquired at the beginning of the periods presented. Property, Plant and Equipment [Abstract] PROPERTY, PLANT AND EQUIPMENT Property, Plant and Equipment Disclosure [Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Finite-Lived Intangible Assets by Major Class [Table] Schedule of Finite-Lived Intangible Assets [Table] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Permits Permits [Member] The description that pertains to the permits. Customer relationships Customer Relationships [Member] Other intangible assets Other Intangible Assets [Member] Finite-lived intangible assets Finite-Lived Intangible Assets [Line Items] Cost Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Finite-Lived Intangible Assets, Net Finite-Lived Intangible Assets, Net Weighted Average Amortization Period (in years) Finite-Lived Intangible Asset, Useful Life Intangible Assets, Gross (Excluding Goodwill) Intangible Assets, Gross (Excluding Goodwill) Intangible Assets, Gross (Excluding Goodwill) Indefinite-Lived Intangible Assets (Excluding Goodwill) Indefinite-Lived Intangible Assets (Excluding Goodwill) Total permits and other intangible assets, Net Intangible Assets, Net (Excluding Goodwill) Inventory Disclosure [Abstract] Oil and oil products Energy Related Inventory, Crude Oil, Products and Merchandise Supplies and drums Energy Related Inventory Supplies and Drums Energy Related Inventory Supplies and Drums Solvent and solutions Energy Related Inventory, Chemicals Other Energy Related Inventory Other Energy Related Inventory and Supplies Other Total inventories and supplies Supplies Asset Retirement Obligation Disclosure [Abstract] Closure and Post-closure Liabilities [Table] Closure and Post-closure Liabilities [Table] The schedule that reflects each closure and post-closure liabilities, during the period. Closure and Post-closure Liabilities [Axis] Closure and Post-closure Liabilities [Axis] The information about each closure and post-closure liabilities during the period. Closure and Post-closure Liabilities [Domain] Closure and Post-closure Liabilities [Domain] Closure and Post-closure Liabilities [Domain] Landfill Retirement Liability Landfill Retirement Liability [Member] Represents the asset retirement obligations for landfill liability. Non-Landfill Retirement Liability Non-Landfill Retirement Liability [Member] Represents the asset retirement obligations for non-landfill liability. CLOSURE AND POST-CLOSURE LIABILITIES Closure and Post Closure Liabilities [Line Items] -- None. No documentation exists for this element. -- Changes to post-closure liabilities Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Balance at the beginning of the period Asset Retirement Obligation Adjustments during the measurement period related to acquisitions Asset Retirement Obligation, Adjustments Related to Acquisitions Asset Retirement Obligation, Adjustments Related to Acquisitions New asset retirement obligations Asset Retirement Obligation, Liabilities Incurred Accretion Asset Retirement Obligation, Accretion Expense Changes in estimates recorded to statement of income Asset Retirement Obligation, Changes Recorded in Statement of Income The amount of change in the asset retirement obligation, during the current period, for changes in estimates recorded in the statement of income. Other changes in estimates recorded to balance sheet Asset Retirement Obligation Other Changes Recorded in Balance Sheet Represents the amount of change in the asset retirement obligation, during the current period for other changes in estimates recorded in the balance sheet. Expenditures Asset Retirement Obligation, Liabilities Settled Currency translation and other Asset Retirement Obligation, Foreign Currency Translation and Other The total amount of the increase or decrease in the amount of asset retirement obligations for the period that is associated with foreign currency translation (to the extent that the entity accounts for the foreign currency effects as a separate component of the change in the liability) and other asset retirement obligations. Balance at the end of the period Credit-adjusted risk-free rate (as a percent) Credit Adjusted Risk Free Rate The rate applied to the undiscounted amount of new asset retirement obligations that are expected to arrive at the present value and that are recorded as of the balance sheet date. Guarantor and Non-Guarantor Subsidiaries Financial Information [Abstract] -- None. No documentation exists for this element. -- Schedule of Condensed Financial Statements [Table] Schedule of Condensed Financial Statements [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Clean Harbors, Inc. Parent Company [Member] U.S. Guarantor Subsidiaries Guarantor Subsidiaries [Member] Foreign Non-Guarantor Subsidiaries Non-Guarantor Subsidiaries [Member] Consolidating Adjustments Consolidation, Eliminations [Member] Condensed consolidating balance sheet Condensed Financial Statements, Captions [Line Items] ASSETS Assets [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Intercompany receivables Receivables from Affiliates Subsidiaries and Holding Companies This element represents receivables from affiliates, subsidiaries and the holding company. Other current assets Other Assets, Current Property, plant and equipment, net Property, Plant and Equipment, Net Investments in subsidiaries Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Intercompany debt receivable Debt Receivable from Affiliates Subsidiaries and Holding Companies This element represents debts receivable from the affiliates, subsidiaries and the holding company. Other long-term assets Assets, Noncurrent, Excluding Property, Plant and Equipment Sum of the carrying amounts as of the balance sheet date of all assets (excluding property, plant and equipment) that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer. Total assets Assets LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity [Abstract] Current liabilities Liabilities, Current Intercompany payables Payables to Affiliates Subsidiaries and Holding Companies This element represents payables to affiliates, subsidiaries and the holding company. Closure, post-closure and remedial liabilities, net Closure Post Closure and Remedial Liabilities, Net The net amount of closure, post-closure and remedial liabilities that is required as of the balance sheet date, which will be paid after one year or beyond the normal operating cycle, if longer. Long-term obligations Long-term Debt, Excluding Current Maturities Capital lease obligations, net Capital Lease Obligations, Noncurrent Intercompany debt payable Debt Payable to Affiliates Subsidiaries and Holding Companies This element represents the debts payable to the affiliates, subsidiaries and the holding company. Other long-term liabilities Unrecognized Tax Benefits and Other Long-term Liabilities, Noncurrent The noncurrent portion of the amount that is recognized for the unrecognized tax benefits and other long-term liabilities as of the balance sheet date. Total liabilities Liabilities Stockholders' equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and stockholders’ equity Liabilities and Equity Equity [Abstract] Schedule of Comprehensive Income (Loss) Schedule of Comprehensive Income (Loss) [Table Text Block] Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Statement of Other Comprehensive Income [Abstract] Statement [Table] Statement [Table] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Statement [Line Items] Statement [Line Items] Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Other Comprehensive Income [Abstract] Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax [Abstract] Unrealized (losses) gains on available-for-sale securities (net of taxes of $70 and $41, respectively) Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Other comprehensive (loss) income Other Comprehensive Income (Loss), Net of Tax Comprehensive (loss) income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest CLOSURE AND POST-CLOSURE LIABILITIES Asset Retirement Obligation Disclosure [Text Block] Fair Value Disclosures [Abstract] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Unsecured Debt [Member] Unsecured Debt [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Unsecured Senior Notes 2020 [Member] Unsecured Senior Notes 2020 [Member] Unsecured Senior Notes 2020 [Member] Unsecured Senior Notes 2021 [Member] Unsecured Senior Notes 2021 [Member] Unsecured Senior Notes 2021 [Member] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurements, Recurring [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value, Measurements, Fair Value Hierarchy [Domain] Total Estimate of Fair Value, Fair Value Disclosure [Member] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Significant Other Observable Inputs (Level 2) [Member] Fair Value, Inputs, Level 2 [Member] Significant Unobservable Inputs (Level 3) [Member] Fair Value, Inputs, Level 3 [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Long-term Debt, Fair Value Long-term Debt, Fair Value Auction rate securities Long-term Investments Derivative Assets Derivative Assets Marketable securities Marketable Securities, Current Derivative Liabilities Derivative Liabilities Temporary decline in fair value of securities Available-for-sale Securities, Gross Unrealized Losses Changes in the entity's auction rate securities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Balance at the beginning of the period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Unrealized gain (loss) included in other comprehensive income Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Balance at the end of the period INVENTORIES AND SUPPLIES Inventory Disclosure [Text Block] Schedule of changes to goodwill Schedule of Goodwill [Table Text Block] Summary of amortizable other intangible assets Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Table Text Block] [Table Text Block] for Schedule of Finite-lived and Indefinite-lived Intangible Assets [Table] Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block] Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block] Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block] Schedule of expected amortization for the net carrying amount of finite lived intangible assets Schedule of Expected Amortization Expense [Table Text Block] Statement of Financial Position [Abstract] Current assets: Assets, Current [Abstract] Accounts receivable, net of allowances aggregating $13,531 and $11,125, respectively Accounts Receivable, Net, Current Unbilled accounts receivable Unbilled Accounts Receivable, Current The aggregate amount of unbilled receivables due for services rendered or to be rendered at the financial statement date, which are usually due within one year (or one business cycle). Deferred costs Deferred Finance Costs, Current, Net Prepaid expenses and other current assets Prepaid Expenses and Other Assets, Current This element represents current portion of prepaid expenses and other assets. Inventories and supplies Deferred tax assets Deferred Tax Assets, Net of Valuation Allowance, Current Total current assets Assets, Current Property, plant and equipment, net Other assets: Other Assets, Noncurrent [Abstract] Long-term investments Deferred financing costs Deferred Finance Costs, Noncurrent, Net Goodwill Goodwill Permits and other intangibles, net Other Other Assets, Noncurrent Total other assets Current liabilities: Liabilities, Current [Abstract] Current portion of capital lease obligations Capital Lease Obligations, Current Accounts payable Accounts Payable, Current Deferred revenue Deferred Revenue and Credits, Current Accrued expenses Accrued Liabilities, Current Current portion of closure, post-closure and remedial liabilities Accrued Capping, Closure, Post Closure and Remedial Liabilities, Current The amount of estimated costs accrued as of the balance sheet date to comply with regulatory requirements pertaining to the retirement of a waste management facility (such as a landfill or waste treatment facility) and to remediate one or more sites. Represents the portion that will be paid within one year. Total current liabilities Other liabilities: Other Liabilities, Noncurrent [Abstract] Closure and post-closure liabilities, less current portion of $3,683 and $8,791, respectively Accrued Capping, Closure, Post-closure and Environmental Costs, Noncurrent Remedial liabilities, less current portion of $17,892 and $15,330, respectively Accrued Environmental Loss Contingencies, Noncurrent Capital lease obligations, less current portion Deferred taxes, unrecognized tax benefits and other long-term liabilities Total other liabilities Liabilities, Noncurrent Stockholders' equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Common stock, $.01 par value: Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Authorized 80,000,000; shares issued and outstanding 60,491,452 and 60,385,453 shares, respectively Common Stock, Value, Issued Shares held under employee participation plan Common Stock Issued, Employee Trust, Deferred Additional paid-in capital Additional Paid in Capital, Common Stock Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated earnings Retained Earnings (Accumulated Deficit) Total stockholders’ equity Accrued Expenses [ABSTRACT] -- None. No documentation exists for this element. -- ACCRUED EXPENSES Accrued Expenses Disclosure [Text Block] The entire disclosure for accrued expenses at the end of the reporting period. Schedule of condensed consolidating balance sheet Schedule of Condensed Consolidating Balance Sheet [Table Text Block] Disclosure of the condensed consolidating balance sheet normally using the registrant (parent) as the sole domain member. Schedule of consolidating statement of income Schedule of Condensed Consolidating Statement of Operations [Table Text Block] Disclosure of the condensed statement of operations normally using the registrant (parent) as the sole domain member. Schedule of condensed consolidating statement of cash flows Schedule of Condensed Consolidating Statement of Cash Flows [Table Text Block] Disclosure of the condensed statement of cash flows normally using the registrant (parent) as the sole domain member. Income Tax Disclosure [Abstract] Income Tax Contingency [Table] Income Tax Contingency [Table] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Foreign and State [Member] Foreign and State [Member] Foreign and State [Member] Income Tax Contingency [Line Items] Income Tax Contingency [Line Items] The Company's effective tax rate (as a percent) Effective Income Tax Rate A ratio calculated by dividing the reported amount of income tax expense attributable to continuing and discontinued operations for the period by GAAP-basis pretax income from continuing and discontinued operations. Unrecognized tax benefits Unrecognized Tax Benefits Unrecognized tax benefits, interest Unrecognized Tax Benefits, Interest on Income Taxes Accrued Amount of decrease in unrecognized tax benefits that, if realized, will impact the effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Earnings Per Share [Abstract] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities Excluded from Computation of Earnings Per Share, by Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Outstanding Stock Awards [Member] Outstanding Stock Awards [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Shares excluded from computation of earning per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Income Statement [Abstract] Revenues: Revenues [Abstract] Service revenues Sales Revenue, Services, Net Product revenues Sales Revenue, Goods, Net Total revenues Revenues Cost of revenues (exclusive of items shown separately below) Cost of Revenue [Abstract] Service revenues Cost of Services Product revenues Cost of Goods Sold Total cost of revenues Cost of Revenue Selling, general and administrative expenses Selling, General and Administrative Expense Accretion of environmental liabilities Accretion of Environmental Liabilities This element includes accretion expenditure that pertains to asset retirement obligations and environmental remediation. Depreciation and amortization Depreciation, Depletion and Amortization Income from operations Operating Income (Loss) Other income (expense) Other Nonoperating Income (Expense) Interest expense, net of interest income of $111 and $186, respectively Interest Expense, Net This element represents the amount of interest expense, net of investment interest income. Income before provision for income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Provision for income taxes Income Tax Expense (Benefit) Net income Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest Earnings per share: Basic Earnings Per Share, Basic Diluted Earnings Per Share, Diluted Weighted average common shares outstanding - basic Weighted Average Number of Shares Outstanding, Basic Weighted average common shares outstanding - diluted Weighted Average Number of Shares Outstanding, Diluted Property, Plant and Equipment Property, Plant and Equipment [Table Text Block] BUSINESS COMBINATIONS Business Combination Disclosure [Text Block] Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Business Segments [Axis] Business Segments [Axis] Segment [Domain] Segment [Domain] Reportable Segment [Member] Reportable Segment [Member] Technical Services [Member] Technical Services [Member] This element represents the Technical Services segment of the entity. Oil Re-Refining and Recycling [Member] Field Services [Member] This element represents the Field Services segment of the entity. S K Environmental Services [Member] S K Environmental Services [Member] SK Environmental Services [Member] Industrial and Field Services [Member] Industrial Services [Member] This element represents the Industrial Services segment of the entity. Oil and Gas Field Services [Member] Oil and Gas Field Services [Member] This element represents the Oil and Gas Field Services segment of the entity. Corporate Items [Member] Unallocated Amount to Segment [Member] Statement, Geographical [Axis] Geographical [Axis] Segment, Geographical [Domain] Segment, Geographical [Domain] United States United States [Member] This element represents the United States segment of the entity. Canada Canada [Member] This element represents the Canada segment of the entity. Other foreign Other Foreign [Member] This element represents the other foreign segment of the entity. Segment reporting information Segment Reporting Information [Line Items] Third party revenues Revenue from External Customers Intersegment revenues, net Segment Reporting Information, Intersegment Revenue Corporate Items, net Revenue (Expense) Allocation to Segments, Net Revenue (Expense) Allocation to Segments, Net Adjusted EBITDA, Total Income (Loss) from Continuing Operations before Interest, Tax, Depreciation and Amortization, Net This element represents the income or loss from continuing operations before interest, taxes, depreciation and amortization to the economic entity. Permits and other intangibles, net Total Intangible assets Intangible Assets, Net (Including Goodwill) Total assets Reconciliation to Consolidated Statements of Income: Reconciliation of Net Income to Adjusted EBITDA [Abstract] -- None. No documentation exists for this element. -- Reporting segments number Reporting Segments Number The number of reportable segments of the entity. Number of operations for which the revenues are insignificant Number of Operations Not Managed by Reportable Segments This element represents the number of operations not managed by reportable segments. Pre-tax, non-cash acquisition accounting adjustments Noncash Acquisition Accounting Adjustments, Before Tax Noncash Acquisition Accounting Adjustments, Before Tax Other (income) expense Interest expense, net of interest income Environmental Remediation Obligations [Abstract] Changes to remedial liabilities Schedule of Environmental Loss Contingencies by Site [Table Text Block] Accrued expenses Schedule of Accrued Liabilities [Table Text Block] EARNINGS PER SHARE Earnings Per Share [Text Block] Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Line of Credit [Member] Line of Credit [Member] Letter of Credit [Member] Letter of Credit [Member] Financing arrangements Debt Instrument [Line Items] Senior unsecured notes Long-term Debt, Gross Revolving credit facility due January 17, 2018 Line of Credit Facility, Amount Outstanding Long-term obligations Revolving credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Line of credit facility available borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Letters of credit amount outstanding Letters of Credit Outstanding, Amount Senior unsecured notes principal amount Debt Instrument, Face Amount Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Disclosure of Compensation Related Costs, Share-based Payments [Abstract] STOCK-BASED COMPENSATION Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Commitments and Contingencies Disclosure [Abstract] Environmental Contingencies [Table] Environmental Contingencies [Table] Discloses the specific components (such as the nature, name, and date) of the environmental contingencies and gives the possible estimates, or states that a reasonable estimate cannot be made. Contingencies by Nature of Contingency [Axis] Contingencies by Nature of Contingency [Axis] Quantifies and describes each contingency that exists as of the balance sheet date, by nature of the probable or possible estimates. Contingency Nature [Domain] Contingency Nature [Domain] An existing condition, situation, or a set of circumstances, which involve uncertainty as to the possible outcomes to an enterprise that will ultimately be resolved, when one or more future events occur or fail to occur. Resolution of the uncertainty may confirm the incurrence of a loss or profit or the incurrence of a liability. Legal and Administrative Proceedings Legal and Administrative Proceedings [Member] Represents the actual or potential liabilities that are related to the legal and administrative proceedings. Ville Mercier Ville Mercier [Member] Represents the details that pertain to the Ville Mercier. Product Liability Cases [Member] Product Liability Cases [Member] Product Liability Cases [Member] Fees Class Action Claims [Member] Fees Class Action Claims [Member] Fees Class Action Claims [Member] Superfund Proceedings Superfund Proceedings [Member] Represents the indemnification obligations under federal or state Superfund laws. Wichita Property [Member] Wichita Property [Member] Represents the details that pertain to Wichita Property. Marine Shale Site [Member] Marine Shale Site [Member] Represents the details that pertain to the Marine Shale Site. Certain Other Third Party Sites [Member] Certain Other Third Party Sites [member] Represents the details that pertain to Certain Other Third Party Sites. Federal and State Enforcement Actions [Member] Federal and State Enforcement Actions [Member] The regulatory proceedings that are relating primarily to waste treatment, storage or disposal facilities. The Company [Member] Indemnification Agreement Party [Axis] Indemnification Agreement Party [Axis] Indemnification Agreement Party [Axis] Indemnification Agreement Party [Domain] Indemnification Agreement Party [Domain] [Domain] for Indemnification Agreement Party [Axis] ChemWaste [Member] Chem Waste [Member] ChemWaste [Member] McKesson Corporation [Member] Mc Kesson Corporation [Member] Mc Kesson Corporation [Member] Contingencies [Line Items] Contingencies [Line Items] -- None. No documentation exists for this element. -- Reserves relating to legal and administrative proceedings Loss Contingency Accrual, at Carrying Value Possible increase in legal and administrative proceedings Loss Contingency Accrual at Carrying Value Potential Additional Liability The amount as of the balance sheet date of potential needed increase in the loss contingency reserves. Number of permits issued by government, for dumping organic liquid Number of Permits Issued by Government to Dump Organic Liquid The number of permits that are granted by the government in relation to environmental liabilities. Number of neighboring municipalities filing separate legal proceedings against the Mercier Subsidiary and the Government of Quebec Number of Neighboring Municipalities Filing Separate Legal Proceedings This element represents the number of municipalities other than Ville Mercier that filed legal proceedings against the Mercier Subsidiary. Total number of municipalities filings separate legal proceedings Number of Total Municipalities Filing Separate Legal Proceedings This element represents the total number of municipalities that filed legal proceedings against the Mercier Subsidiary. Damages claimed by municipalities Loss Contingency, Damages Sought, Value Suit against alleged past costs Loss Contingency, Actions Taken by Plaintiff Value This element represents the suit against recovery of alleged past costs. Accrued remedial liabilities Accrual for Environmental Loss Contingencies Number of lawsuits filed Loss Contingency, Number of Plaintiffs Third party sites arising out of acquisition of assets Site Contingency, Cleanup Costs Number of Sites Owned by Third Party The number of sites for which cleanup costs are incurred subject to proceedings under federal or state superfund laws owned by third party. Third party sites requiring expenditure on remediation Site Contingency, Environmental Remediation Expense Number of Sites Owned by Third Party The number of sites for which environmental remediation expense is incurred subject to proceedings under federal or state superfund laws owned by third party. Number of pending personal injury claims allegedly resulting from the used of Safety-Kleen's products Loss Contingency, Pending Claims, Number Number of product liability claims settled or dismissed Loss Contingency, Claims Settled and Dismissed, Number Number of sites owned by third party excluded from cleanup or related liabilities Site Contingency, Number of Sites The number of sites that are subject to proceedings under federal or state superfund laws brought against the company or against third parties for which the company may have certain indemnification obligations. Number of sites owned by the entity subject to proceedings under federal or state superfund laws Site Contingency, Number of Sites Owned by Entity The number of sites that are subject to proceedings under federal or state superfund laws that are owned by the entity. Remaining reserves relating to listed third party sites Site Contingency, Remaining Reserves The remaining reserves relating to listed third party site. Indemnification agreement with third party sites Site Contingency, Indemnification Agreement Number of Sites Owned by Third Party The number of sites for which the company has an indemnification agreement from the third party seller. Notices received from owners of third party sites seeking indemnification from the company Site Contingency, Number of Sites Owned by Third Party The number of sites owned by third parties subject to proceedings under federal or state Superfund laws for which the company or the prior owners shipped wastes. Number of sites where potential liability could exceed the $100,000 threshold Number of Sites Where Potential Liability Could Exceed Threshold Number of Sites Where Potential Liability Could Exceed Threshold Additional cleanup liabilities, maximum Site Contingency, Loss Exposure in Excess of Accrual, Best Estimate Number of sites owned by a third party where Company was notified it is a PRP or potential PRP Site Contingency, Number of Sites Owned by Third Party, Potentially Responsible Party, Notified Site Contingency, Number of Sites Owned by Third Party, Potentially Responsible Party, Notified Number of sites for which environmental remediation expense is settled Site Contingency, Environmental Remediation Expense Settled Number of Sites Owned by Third Party The number of sites owned by the third party for which environmental remediation expense is settled. Site Contingency, Not Requiring Environmental Remediation Expense Number of Sites Owned by Third Party Site Contingency, Not Requiring Environmental Remediation Expense Number of Sites Owned by Third Party The number of sites owned by the third party for which environmental remediation expense is not required. Number of sites owned by third party excluded from cleanup or related liabilities Site Contingency, Number of Sites Owned by Third Party Excluded from Cleanup or Related Liabilities The number of sites owned by third party excluded from cleanup or related liabilities under the terms of the CSD asset acquisition. State-designated superfund site acquired, total acres Site Contingency, Area Acquired by Entity The total acres of the state-designated superfund site acquired by the entity. GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill and Intangible Assets Disclosure [Text Block] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Award Type [Domain] Award Type [Domain] Restricted stock awards Restricted Stock Awards [Member] The element describes the details that pertain to restricted stock awards, which are granted by the entity, during the reporting period. Awards granted Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Weighted-Average Grant-Date Fair Value (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Foreign Currency Translation [Member] Accumulated Translation Adjustment [Member] Unrealized Gain (Loss) on Available-For-Sale Securities [Member] Accumulated Net Unrealized Investment Gain (Loss) [Member] Unfunded Pension Liability [Member] Accumulated Defined Benefit Plans Adjustment [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] [Line Items] for Accumulated Other Comprehensive Income (Loss) [Table] Foreign currency translation - Gross Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax Foreign currency translation, Tax Effect Other Comprehensive Income (Loss), Foreign Currency Translation Gain (Loss) Arising During Period, Tax Foreign currency translation, Net of Tax Unrealized gain (loss) on available-for-sale securities, Gross Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax Unrealized gain (loss) on available-for-sale securities, Tax Effect Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax Unrealized gain (loss) on available-for-sale securities, Net of Tax Other comprehensive (loss) income, Gross Other Comprehensive Income (Loss), before Tax Other comprehensive (loss) income, Tax Effect Other Comprehensive Income (Loss), Tax Components of Other Accumulated Income, Net of Tax [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance Other comprehensive loss Ending balance FAIR VALUE MEASUREMENTS Fair Value Disclosures [Text Block] Goodwill [Roll Forward] Goodwill [Roll Forward] Balance at January 1, 2013 Decrease from adjustments during the measurement period related to acquisitions Goodwill, Purchase Accounting Adjustments Currency translation Goodwill, Translation Adjustments Balance at March 31, 2013 Other Comprehensive Income [Abstract] Other Comprehensive Income (Loss), Available-for-sale Securities, Tax [Abstract] Change in fair value of available for sale securities, tax Statement of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash from operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Allowance for doubtful accounts Provision for Doubtful Accounts Amortization of deferred financing costs and debt discount Amortization of Financing Costs and Discounts Changes in environmental liability estimates Other Increase (Decrease) in Environmental Liabilities Deferred income taxes Deferred Income Tax Expense (Benefit) Stock-based compensation Share-based Compensation Excess tax benefit of stock-based compensation Excess Tax Benefit (Tax Deficiency) from Share-based Compensation, Operating Activities Income tax benefit related to stock option exercises Tax Benefit from Stock Options Exercised Other expense (income) Gain (Loss) on Sale of Fixed Assets and Assets Held for Sale The difference between the sale price or salvage price and the book value of a property, plant, and equipment and assets held for sale, that was sold or retired during the reporting period. This element refers to the gain (loss). Environmental expenditures Payments for Environmental Liabilities Changes in assets and liabilities, net of acquisitions Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Inventories and supplies Increase (Decrease) in Inventories Other current assets Increase (Decrease) in Other Operating Assets Accounts payable Increase (Decrease) in Accounts Payable Other current and long-term liabilities Increase (Decrease) in Other Operating Liabilities Net cash from operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Additions to property, plant and equipment Payments to Acquire Property, Plant, and Equipment Proceeds from sales of fixed assets Proceeds from Sales of Fixed Assets and Assets Held for Sale Cash inflow from sale or disposal of property, plant, and equipment and assets held for sale, during the reporting period. This element refers to proceeds from such sale or disposal. Acquisitions, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Additions to intangible assets, including costs to obtain or renew permits Payments to Acquire Intangible Assets Purchase of marketable securities Payments to Acquire Available-for-sale Securities Other Proceeds from Insurance Settlement Cash received from insurance settlement during the current period. Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Change in uncashed checks Increase (Decrease) in Outstanding Checks, Financing Activities Proceeds from exercise of stock options Proceeds from Stock Options Exercised Remittance of shares, net Payments Related to Tax Withholding for Share-based Compensation Proceeds from employee stock purchase plan Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Excluding Stock Options Deferred financing costs paid Payments of Financing Costs Payments on capital leases Repayment of Capital Lease Obligation The cash outflow for a borrowing that was recorded for a lease meeting the criteria for capitalization (with maturities within one year or more). It includes both short-term and long-term capital lease obligations. Issuance costs related to 2012 issuance of common stock Payments of Stock Issuance Costs Distribution of cash earned on employee participation plan Distributions Earned on Employee Participation Plan The cash outflow that is related to a cash and stock employee incentive award plan. Excess tax benefit of stock-based compensation Excess Tax Benefit (Tax Deficiency) from Share-based Compensation, Financing Activities Net cash from financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate change on cash Effect of Exchange Rate on Cash and Cash Equivalents Decrease in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Supplemental information: Supplemental Cash Flow Information [Abstract] Cash payments for interest and income taxes: Cash Payments for Interest and Income Taxes [Abstract] Description and amounts of long lived assets and liabilities held for sale. Disclosure may include the description of the facts and circumstances leading to the expected disposal, manner and timing of disposal, the carrying value of the assets and liabilities held for sale, the gain or loss recognized in the income statement and the income statement caption that includes that gain or loss. Interest paid Interest Paid, Net Income taxes paid Income Taxes Paid, Net Non-cash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Property, plant and equipment accrued Noncash or Part Noncash Acquisition, Value of Assets Acquired Transfer of inventory to property, plant and equipment Transfer of Inventory to Property, Plant and Equipment Transfer of Inventory to Property, Plant and Equipment FINANCING ARRANGEMENTS Debt Disclosure [Text Block] Interest, Income Investment Income, Interest Schedule of Business Acquisitions, by Acquisition [Table] Scenario, Previously Reported [Member] Scenario, Previously Reported [Member] Business Acquisition [Line Items] Acquisition-related costs Business Combination, Acquisition Related Costs Combined purchase price Business Acquisition, Cost of Acquired Entity, Purchase Price Assumption of long-term debt Business Acquisition, Purchase Price Allocation, Current Liabilities, Long-term Debt Post-closing adjustment to purchase price Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred Purchase Price Allocation Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract] Current assets Business Acquisition, Purchase Price Allocation, Current Assets Property, plant and equipment Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment Customer relationships and other intangibles Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets Other assets Business Acquisition, Purchase Price Allocation, Other Noncurrent Assets Current liabilities Business Acquisition, Purchase Price Allocation, Current Liabilities Deferred taxes, unrecognized tax benefits and other long-term liabilities Business Acquisition, Purchase Price Allocation, Other Noncurrent Liabilities Total identifiable net assets Business Acquisition, Purchase Price Allocation, Identifiable Assets, Net Represents the amount of acquisition cost of a business combination allocated to identifiable net assets, excluding goodwill. Goodwill Business Acquisition, Purchase Price Allocation, Goodwill Amount Total Business Acquisition, Purchase Price Allocation, Assets Acquired (Liabilities Assumed), Net Other current assets, Measurement Period Adjustment Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Assets Property, plant and equipment, Measurement Period Adjustment Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment Permits and other intangibles, Measurement Period Adjustment Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles Other assets, Measurement Period Adjustment Business Combination Provisional Information Initial Accounting Incomplete Adjustment Other Assets This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to other assets acquired in connection with a business combination for which the initial accounting was incomplete. Current liabilities, Measurement Period Adjustment Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Liabilities Other liabilities, Measurement Period Adjustments Business Combination Provisional Information Initial Accounting Incomplete Adjustment Other Liabilities This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period acquired in connection with a business combination for which the initial accounting was incomplete. Total identiiable net assets, Measurement Period Adjustments Business Combination Provisional Information Initial Accounting Incomplete Adjustment Identifiable Net Assets This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period acquired in connection with a business combination for which the initial accounting was incomplete. Goodwill, Measurement Period Adjustments Goodwill, Allocation Adjustment Total, Measurement Period Adjustments Business Acquisition Cost Of Acquired Entity Purchase Price Measurement Adjustment Business Acquisition Cost Of Acquired Entity Purchase Price Measurement Adjustment Preliminary fair value of customer receivables Business Combination, Acquired Receivables, Fair Value Gross amounts of customer receivables Business Acquisition, Purchase Price Allocation Current Assets, Customer Receivables Gross Amount Due Represents the gross amount due of customer receivables acquired. Business Acquisition, Pro Forma Information [Abstract] Business Acquisition, Pro Forma Information [Abstract] Pro forma combined revenues Business Acquisition, Pro Forma Revenue Pro forma combined net income Business Acquisition, Pro Forma Net Income (Loss) SEGMENT REPORTING Segment Reporting Disclosure [Text Block] Reconciliation of third party revenues to direct revenues Schedule of Segment Revenues [Table Text Block] Tabular disclosure of the direct revenues for each reportable segment, including a reconciliation to consolidated third party revenues. Reconciliation to consolidated statements of income to adjusted EBITDA Schedule of Reconciliation of Net Income to Adjusted Earnings before Interest Tax Depreciation and Amortization Consolidated [Table Text Block] This element may be used to capture the complete disclosure of the identification, description, and amounts of all significant reconciling items used in the reconciliation of net income to adjusted earnings before interest, tax, depreciation and amortization of continuing operations. PP&E and intangible assets by segment Schedule of Segment PPE and Intangible Assets [Table Text Block] Tabular disclosure of property, plant and equipment and intangible assets for each reportable segment, including a reconciliation to consolidated amounts. Total assets by segment Schedule of Segment Total Assets [Table Text Block] Tabular disclosure of total assets for each reportable segment, including a reconciliation to consolidated amounts. Total assets by geographical area Schedule of Total Assets by Geographical Area [Table Text Block] Tabular disclosure of total assets by geographical area, including a reconciliation to consolidated amounts. Consolidating statement of income Service cost of revenues Product cost of revenues Interest (expense) income Equity in earnings of subsidiaries Income (Loss) from Affiliates Subsidiaries and Holding Company Represents the income (loss) from affiliates, subsidiaries and the holding company. Intercompany dividend income (expense) Net Dividend Income from Affiliates Subsidiaries and Holding Company Represents the net dividend income from affiliates, subsidiaries and the holding company. Intercompany interest income (expense) Net Interest Income from Affiliates Subsidiaries and Holding Company Represents the net interest income from affiliates, subsidiaries and the holding company. Provision (benefit) for income taxes Net income Other comprehensive income (loss) INCOME TAXES Income Tax Disclosure [Text Block] Business Combinations, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract] Business Combinations, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract] Senior Notes [Member] Senior Notes [Member] Outstanding common shares acquired (as a percent) Business Acquisition, Percentage of Voting Interests Acquired Net working capital adjustment included in purchase price Business Combination, Consideration Transferred, Other Net working capital adjustment threshhold Threshold Amount By Which The Estimated Net Working Capital (Excluding Cash) On The Closing Date Is Compared To Threshold Amount By Which The Estimated Net Working Capital (Excluding Cash) On The Closing Date Is Compared To Existing cash used to finance the acquisition Business Acquisition, Cost of Acquired Entity, Cash Paid Net proceeds from a public offering of shares used to finance the acquisition Stock Issued During Period, Value, Acquisitions Number of shares sold in the public offering Stock Issued During Period, Shares, Acquisitions Net proceeds from a private debt offering used to finance the acquisition Proceeds from Issuance of Private Placement Face amount of long-term debt issued in private offering Business Acquisition, Purchase Price Allocation [Abstract] Business Acquisition, Purchase Price Allocation [Abstract] Inventories and supplies Business Acquisition Purchase Price Allocation, Inventory and Supplies BusinessAcquisitionPurchasePriceAllocationInventoryandSupplies Other current assets Permits and other intangibles Remedial liabilities, less current portion Business Acquisition Purchase Price Allocation Asset Retirement Obligations and Remedial Liabilities Business Acquisition Purchase Price Allocation Asset Retirement Obligations and Remedial Liabilities Closure and post-closure liabilities, less current portion Business Acquisition Purchase Price Allocation Post Closure Liabilities Business Acquisition Purchase Price Allocation Post Closure Liabilities Inventories and supplies, Measurement Period Adjustment Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory Closure and post-closure liabilities, less current portion, Measurement Period Adjustments Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Post Closure Liabilities Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Post Closure Liabilities Remedial liabilities, less current portion, Measurement Period Adjustments Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Asset Retirement Obligations and Remedial Liabilities Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Asset Retirement Obligations and Remedial Liabilities Deferred taxes, unrecognized tax benefits and other long-term liabilities, Measurement Period Adjustments Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deferred Taxes, Unrecognized Tax Benefits and Other Noncurrent Liabilities Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deferred Taxes, Unrecognized Tax Benefits and Other Noncurrent Liabilities COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Changes in auction rate securities measured at fair value on a recurring basis Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Schedule of Derivative Instruments Schedule of Derivative Instruments [Table Text Block] Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] 2013 (nine months) Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2014 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2015 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2016 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2017 Finite-Lived Intangible Assets, Amortization Expense, Year Five Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Summary of the entity's financial arrangements Schedule of Long-term Debt Instruments [Table Text Block] Condensed consolidating statement of cash flows Net cash from operating activities Proceeds from slales of fixed assets Costs to obtain or renew permits Remittance of shares, net Dividends (paid) / received Dividends Paid The cash outflow from the entity's earnings to the shareholders. This includes dividends paid to noncontrolling interests holders. Interest (payments) / received Payments for Proceeds from Interest The interest paid or received on loans and other debt instruments during the current period. GUARANTOR AND NON-GUARANTOR SUBSIDIARIES FINANCIAL INFORMATION Condensed Financial Information for Subsidiary Guarantors and Non Guarantors Disclosure [Text Block] This element represents the disclosure of the condensed financial statements (balance sheet, income statement and statement of cash flows), normally using the registrant (parent) as the sole domain member. If condensed consolidating financial statements are being presented, other domain members (in addition to parent) such as guarantor subsidiaries, non-guarantor subsidiaries, and the consolidation eliminations, will be included in order that the respective monetary amounts for each of the domains will aggregate to the respective amounts on the consolidated financial statements. The line items are the various captions used to compile the condensed financial statements. Using extensions, most, if not all, of the elements representing condensed financial statement captions will be the same as those used for the consolidated financial statements captions. Reconciliation of basic and diluted earnings per share computations Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block] Schedule of closure and post-closure liabilities Schedule of Change in Asset Retirement Obligation [Table Text Block] Document and Entity Information [Abstract] Document and Entity Information [Abstract] Document Information [Table] Document Information [Table] Document Information, Document [Axis] Document Information, Document [Axis] Document [Domain] Document [Domain] Document Information [Line Items] Document Information [Line Items] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Insurance Accrued Insurance, Current Interest Interest Payable, Current Accrued disposal costs Disposal Group, Including Discontinued Operation, Accrued Liabilities Accrued compensation and benefits Employee-related Liabilities, Current Income, real estate, sales and other taxes Taxes Payable, Current Other Other Accrued Liabilities, Current Total accrued expenses Summary of the total number, weighted average grant-date fair value, and types of awards granted Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] Schedule of Finite-lived and Indefinite-lived Intangible Assets [Table] Schedule of Finite-lived and Indefinite-lived Intangible Assets [Table] Schedule of Finite-lived and Indefinite-lived Intangible Assets [Table] Permits [Member] Customer Relationships [Member] Other Intangible Assets [Member] Indefinite-lived Intangible Assets by Major Class [Axis] Indefinite-lived Intangible Assets by Major Class [Axis] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Trademarks [Member] Trademarks [Member] Schedule of Finite-lived and Indefinite-lived Intangible Assets [Line Items] Schedule of Finite-lived and Indefinite-lived Intangible Assets [Line Items] [Line Items] for Schedule of Finite-lived and Indefinite-lived Intangible Assets [Table] Acquired Finite-lived Intangible Assets, Total Amount Assigned Acquired Finite-lived Intangible Asset, Amount Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Acquired Indefinite-lived Intangible Assets, Total Amount Assigned Acquired Indefinite-lived Intangible Asset, Amount Total Amount Assigned Acquired Intangible Asset, Amount Acquired Intangible Asset, Amount Statement of Stockholders' Equity [Abstract] Common Stock Common Stock [Member] Shares Held Under Employee Participation Plan Shares Held Under Employee Participation Plan [Member] Common stock held in a trust that has been set up specifically to accumulate stock for the sole purpose of distribution to participating employees but not yet earned. Additional Paid-in Capital Additional Paid-in Capital [Member] Accumulated Other Comprehensive Income Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Earnings Retained Earnings [Member] Increase (Decrease) in Stockholders' Equity Balance Balance (in shares) Shares, Issued Stock-based compensation Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Stock-based compensation (in shares) Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Issuance of restricted shares, net of shares remitted Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Issuance of restricted shares, net of shares remitted (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Issuance costs related to 2012 issuance of common stock Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Exercise of stock options (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Net tax benefit on exercise of stock-based awards Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation Net tax benefit on exercise of stock options (in shares) Shares Paid for Tax Withholding for Share Based Compensation Employee stock purchase plan Stock Issued During Period, Value, Employee Stock Purchase Plan Employee stock purchase plan (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Balance Balance (in shares) ACCUMULATED OTHER COMPREHENSIVE INCOME Comprehensive Income (Loss) Note [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] BASIS OF PRESENTATION Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Schedule of Property, Plant and Equipment [Table] Schedule of Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Land Land [Member] Asset retirement costs (non-landfill) Asset Retirement Obligation Costs [Member] Landfill assets Landfill [Member] Building and improvements Building and Building Improvements [Member] Camp equipment Camp Equipment [Member] Represents the industrial lodging facilities that are utilized in the entity's Industrial Services segment to provide lodging services to companies in the refinery and petrochemical industries. Vehicles Vehicles [Member] Equipment Equipment [Member] Furniture and fixtures Furniture and Fixtures [Member] Construction in progress Construction in Progress [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property, plant and equipment, gross Property, Plant and Equipment, Gross Less - accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Total property, plant and equipment, net Allowance for Doubtful Accounts Receivable, Current Allowance for Doubtful Accounts Receivable, Current Accrued Capping, Closure, Post-closure and Environmental Costs Accrued Capping, Closure, Post-closure and Environmental Costs Accrued Environmental Loss Contingencies, Current Accrued Environmental Loss Contingencies, Current Common Stock, Par or Stated Value Per Share Common Stock, Par or Stated Value Per Share Common Stock, Shares Authorized Common Stock, Shares Authorized Common Stock, Shares, Issued Common Stock, Shares, Issued Common Stock, Shares, Outstanding Common Stock, Shares, Outstanding Numerator for basic and diluted earnings per share: Numerator for Basic and Diluted Earnings Per Share [Abstract] -- None. No documentation exists for this element. -- Net income Denominator: Denominator for Basic and Diluted Earnings Per Share [Abstract] -- None. No documentation exists for this element. -- Basic shares outstanding Dilutive effect of equity-based compensation awards Incremental Common Shares Attributable to Share-based Payment Arrangements Dilutive shares outstanding Basic earnings per share: Earnings Per Share, Basic [Abstract] Basic earnings per share (in USD per share) Diluted earnings per share: Earnings Per Share, Diluted [Abstract] Diluted earnings per share (in USD per share) Schedule of Inventory Schedule of Inventory, Current [Table Text Block] Derivative [Table] Derivative [Table] Derivative, by Nature [Axis] Derivative, by Nature [Axis] Derivative, Name [Domain] Derivative, Name [Domain] Cashless Collar Contract [Member] Cashless Collar Contract [Member] Cashless Collar Contract [Member] Derivative, by Trade Date [Axis] Derivative, by Trade Date [Axis] Derivative, by Trade Date [Axis] Derivative, by Trade Date [Domain] Derivative, by Trade Date [Domain] [Domain] for Derivative, by Trade Date [Axis] Trade Date, March 5, 2012 [Member] Trade Date, March 5, 2012 [Member] Trade Date, March 5, 2012 [Member] Trade Date, February 7, 2012 [Member] Trade Date, February 7, 2012 [Member] Trade Date, February 7, 2012 [Member] Trade Date, December 28, 2012 [Member] Trade Date, December 28, 2012 [Member] Trade Date, December 28, 2012 [Member] Trade Date, February 7, 2013 [Member] Trade Date, February 7, 2013 [Member] Trade Date, February 7, 2013 [Member] Trade Date, April 10, 2012 [Member] Trade Date, April 10, 2012 [Member] Trade Date, April 10, 2012 [Member] Trade Date September 11, 2012 [Member] Trade Date September 11, 2012 [Member] Trade Date September 11, 2012 [Member] Trade Date December 7, 2012 [Member] Trade Date December 7, 2012 [Member] Trade Date December 7, 2012 [Member] Trade Date March 7, 2012 [Member] Trade Date March 7, 2012 [Member] Trade Date March 7, 2012 [Member] Trade Date May 3, 2012 [Member] Trade Date May 3, 2012 [Member] Trade Date May 3, 2012 [Member] Trade Date August 3, 2012 [Member] Trade Date August 3, 2012 [Member] Trade Date August 3, 2012 [Member] Trade Date October 4, 2012 [Member] Trade Date October 4, 2012 [Member] Trade Date October 4, 2012 [Member] Trade Date November 9, 2012 [Member] Trade Date November 9, 2012 [Member] Trade Date November 9, 2012 [Member] Trade Date January 8, 2013 [Member] Trade Date January 8, 2013 [Member] Trade Date January 8, 2013 [Member] Derivative, by Cap Price [Axis] Derivative, by Cap Price [Axis] Derivative, by Cap Price [Axis] Derivative, by Cap Price [Domain] Derivative, by Cap Price [Domain] [Domain] for Derivative, by Cap Price [Axis] Cap $143.50 [Member] Cap Price One [Member] Cap Price One [Member] Cap $154.00 [Member] Cap Price Two [Member] Cap Price Two [Member] Cap $144.50 [Member] Cap Price Three [Member] Cap Price Three [Member] Cap $153.50 [Member] Cap Price Four [Member] Cap Price Four [Member] Cap $117.80 [Member] Cap Price Five [Member] Cap Price Five [Member] Cap $116.25 [Member] Cap Price Six [Member] Cap Price Six [Member] Derivative [Line Items] Derivative [Line Items] Barrels of oil per Month Derivative, Nonmonetary Notional Amount Floor Derivative, Floor Price Cap Derivative, Cap Price Assets, Fair Value Liabilities, Fair Value Accounting Policies [Abstract] Amount of Safety-Kleen's revenue included in the Company's consolidated financial statements Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual Deferred revenue deferral period Deferred Revenue, Recognition, Deferral Period Deferred Revenue, Recognition, Deferral Period Site Contingency [Table] Site Contingency [Table] Site Contingency by Nature [Axis] Environmental Remediation Site [Axis] Site Contingency, Nature of Contingency [Domain] Site Contingency, Nature of Contingency [Domain] Remedial Liabilities for Landfill Sites Remedial Liabilities for Landfill Sites [Member] This element represents the details that pertain to the remedial liability for landfill sites. Remedial Liabilities for Inactive Sites Remedial Liabilities for Inactive Sites [Member] This element represents the details that pertain to the remedial liabilities for inactive sites. Remedial Liabilities (Including Superfund) for Non-Landfill Operations Remedial Liabilities (Including Superfund) for Non-Landfill Operations [Member] This element represents the details that pertain to the remedial liabilities for non-landfill sites. Remedial liabilities Site Contingency [Line Items] Accrual for Environmental Loss Contingencies [Roll Forward] Accrual for Environmental Loss Contingencies [Roll Forward] Balance at the beginning of the period Adjustments during the measurement period related to acquisitions Accrual for Environmental Loss Contingencies, Increase (Decrease) for Acquisitions and Divestitures Accretion Accrual for Environmental Loss Contingencies, Provision for New Losses Changes in estimates recorded to statement of income Accrual for Environmental Loss Contingencies, Increase (Decrease) for Revision in Estimates Expenditures Accrual for Environmental Loss Contingencies, Payments Currency translation and other Accrual for Environmental Loss Contingencies, Increase (Decrease) for Currency Translation and Other The increase or decrease in the accrual for environmental loss contingencies, during the reporting period that is related to currency translations and other adjustments. Balance at the end of the period SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies and Recent Accounting Pronouncements [Text Block] This element may be used to describe all significant accounting policies of the reporting entity, an entity's explanation that the preparation of financial statements in conformity with generally accepted accounting principles requires the use of management estimates and the impact of recently issued accounting standards. Revenue Recognition and Deferred Revenue Revenue Recognition, Policy [Policy Text Block] Deferred Costs Relating to Deferred Revenue Deferred Charges, Policy [Policy Text Block] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] REMEDIAL LIABILITIES Environmental Loss Contingency Disclosure [Text Block]