Earnings Per Share [Abstract] 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 Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Denominator: Denominator for Basic and Diluted Earnings Per Share [Abstract] -- None. No documentation exists for this element. -- Basic shares outstanding Weighted Average Number of Shares Outstanding, Basic Dilutive effect of equity-based compensation awards Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Dilutive shares outstanding Weighted Average Number of Shares Outstanding, Diluted Basic earnings per share: Earnings Per Share, Basic [Abstract] Basic earnings per share (in dollars per share) Income (Loss) from Continuing Operations, Per Basic Share Diluted earnings per share: Earnings Per Share, Diluted [Abstract] Diluted earnings per share (in dollars per share) Income (Loss) from Continuing Operations, Per Diluted Share Quarterly Financial Information Disclosure [Abstract] QUARTERLY DATA (UNAUDITED) Quarterly Financial Information [Text Block] Guarantor and Non-Guarantor Subsidiaries Financial Information [Abstract] -- None. No documentation exists for this element. -- GUARANTOR AND NON-GUARANTOR SUBSIDIARIES 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. Payables and Accruals [Abstract] Accrued expenses Schedule of Accrued Liabilities [Table Text Block] Statement of Financial Position [Abstract] Account Receivable, allowances aggregating Allowance for Doubtful Accounts Receivable, Current Closure and post-closure liabilities, current portion Accrued Capping, Closure, Post-closure and Environmental Costs Remedial liabilities, current portion Accrued Environmental Loss Contingencies, Current Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, authorized shares Common Stock, Shares Authorized Common stock, issued shares Common Stock, Shares, Issued Common stock, outstanding shares Common Stock, Shares, Outstanding Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Operating segments Operating Segments [Member] Intersegment Intersegment Eliminations [Member] Corporate Items (non-segment) Corporate, Non-Segment [Member] Segments [Axis] Segments [Axis] Segment [Domain] Segments [Domain] Technical Services Technical Services [Member] This element represents the Technical Services segment of the entity. Oil Refining and Recycling Oil Refining and Recycling Segment [Member] Oil Refining and Recycling Segment [Member] Environmental Services Environmental Services [Member] This element represents the Environmental Services segment of the entity. Industrial and Field Services Industrial and Field Services [Member] This element represents the Industrial and Field Services segment of the entity. Oil and Gas Field Services Oil and Gas Field Services [Member] This element represents the Oil and Gas Field Services segment of the entity. Corporate Items Segment Reconciling Items [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Yellowstone River Yellowstone River [Member] Yellowstone River [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] 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. Total revenues Revenues 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. Reconciliation to Consolidated Statements of Income: Reconciliation of Net Income to Adjusted EBITDA [Abstract] -- None. No documentation exists for this element. -- Pre-tax, non-cash acquisition accounting inventory adjustment Noncash Acquisition Accounting Adjustments, Before Tax Noncash Acquisition Accounting Adjustments, Before Tax 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) Loss on early extinguishment of debt Gains (Losses) on Extinguishment of Debt Interest expense, net of interest income Interest Expense, Net This element represents the amount of interest expense, net of investment interest income. Income before provision (benefit) for income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Stock Repurchase Program, Authorized Amount Stock Repurchase Program, Authorized Amount Income Tax Disclosure [Abstract] Income Tax Contingency [Table] Income Tax Contingency [Table] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Previously Reported Scenario, Previously Reported [Member] Income Tax Contingency [Line Items] Income Tax Contingency [Line Items] Undistributed Earnings of Foreign Subsidiaries Undistributed Earnings of Foreign Subsidiaries Valuation allowance Deferred Tax Assets, Valuation Allowance Valuation Allowance, Amount Foreign Tax Credits Valuation Allowance, Amount Foreign Tax Credits Valuation Allowance, Amount Foreign Tax Credits Valuation Allowance, Amount State Net Operating Loss Valuation Allowance, Amount State Net Operating Loss Valuation Allowance, Amount State Net Operating Loss Valuation Allowance, Amount Foreign Net Operating Loss Valuation Allowance, Amount Foreign Net Operating Loss Valuation Allowance, Amount Foreign Net Operating Loss Valuation Allowance, Amount, Deferred Tax Assets of Subsidiary Valuation Allowance, Amount, Deferred Tax Assets of Subsidiary Valuation Allowance, Amount, Deferred Tax Assets of Subsidiary Unrecognized tax benefits and related reserves including interest and penalties Unrecognized Tax Benefits Including Interest and Penalties The amount of unrecognized tax benefits including interest and penalties pertaining to uncertain tax positions taken in tax returns as of the balance sheet date. Unrecognized tax benefits, interest Unrecognized Tax Benefits, Interest on Income Taxes Accrued Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense Document and Entity Information [Abstract] Document and Entity Information [Abstract] 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 Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Current Reporting Status Entity Current Reporting Status Entity Public Float Entity Public Float Accounting Policies [Abstract] Bank Disbursement Account Balance Cash and Cash Equivalents, Bank Disbursement Account, Minimum Balance Allowed Cash and Cash Equivalents, Bank Disbursement Account, Minimum Balance Allowed 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] Pre-tax, non-cash acquisition accounting inventory adjustments 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) Other (income) expense 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). Stock-based compensation Share-based Compensation Excess tax benefit of stock-based compensation Excess Tax Benefit from Share-based Compensation, Operating Activities Income tax benefit related to stock option exercises Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation Write-off of deferred financing costs and debt (premium) discount Write-off Deferred Financing Costs and Debt Discount Write-off Deferred Financing Costs and Debt Discount Environmental expenditures Payments for Environmental Liabilities Changes in assets and liabilities: 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 Proceeds from sales of marketable securities Proceeds from Sale and Maturity of Available-for-sale Securities Proceeds from sale of long-term investments Proceeds from Sale of Long-term Investments Other Payments for (Proceeds from) Other Investing Activities 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 for Repurchase of Common Stock Excess tax benefit of stock-based compensation Excess Tax Benefit from Share-based Compensation, Financing Activities Deferred financing costs paid Payments of Financing Costs Proceeds from employee stock purchase plan Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Excluding Stock Options 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. Proceeds from issuance of common stock, net Proceeds from Issuance of Common Stock Principal payments on debt Repayments of Long-term Debt 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. Issuance of senior unsecured notes, at par Issuance of senior unsecured notes, at par Issuance of senior unsecured notes, at par Issuance of senior secured notes, including premium Proceeds from Issuance of Secured Debt Issuance costs related to issuances of common stock Payments of Stock Issuance Costs 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 Increase (decrease) in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents, beginning of year Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents, end of year 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 (received) 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 Accrued working capital adjustments Accrued Working Capital Adjustment Accrued Working Capital Adjustment Assets acquired through capital lease Capital Lease Obligations Incurred Property, Plant and Equipment [Abstract] Interest Capitalization Accumulated Capitalized Interest Costs Depreciation and Amortization Depreciation, Depletion and Amortization, Nonproduction Inventory Disclosure [Abstract] INVENTORIES AND SUPPLIES Inventory Disclosure [Text Block] Equity [Abstract] 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 Adjustments Accumulated Translation Adjustment [Member] Unrealized Gains (Losses) on Available-for-Sale Securities Accumulated Net Unrealized Investment Gain (Loss) [Member] Unfunded Pension Liability Accumulated Defined Benefit Plans Adjustment [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Increase (Decrease) in Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning Balance Accumulated Other Comprehensive Income (Loss), Net of Tax Other comprehensive (loss) income before reclassifications Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Amounts reclassified out of accumulated other comprehensive income Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Tax effects Other Comprehensive Income (Loss), Tax Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Ending Balance Organization, Consolidation and Presentation of Financial Statements [Abstract] Operations Operations [Table] Operations [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Safety-Kleen Safety-Kleen [Member] Safety-Kleen [Member] Operations Operations [Line Items] [Line Items] for Operations [Table] Outstanding common shares acquired (as a percent) Business Acquisition, Percentage of Voting Interests Acquired Disclosure of Compensation Related Costs, Share-based Payments [Abstract] 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] Equity Award [Domain] Performance Stock Awards Performance Stock Awards [Member] The element describes the details that pertain to performance stock awards that are granted by the entity, during the reporting period. Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Recordable Workplace Injury Rate (workers per year) Recordable Workplace Injury Rate Recordable Workplace Injury Rate Expected Forfeiture Rate Employees Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Forfeiture Rate Employees Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Forfeiture Rate Employees Expected Forfeiture Rate, Executives and Directors Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Forfeiture Rate Executives and Directors Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Forfeiture Rate Executives and Directors Performance Evaluation Stock-Based Compensation Performance Evaluation Stock-Based Compensation Performance Evaluation Stock-Based Compensation Number of Performance Criteria Number of Performance Criteria Number of Performance Criteria Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Number of Shares, Unvested at beginning of period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Number of Shares, Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Number of Shares, Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Number of Shares, Unvested at end of period Shares, Unvested, Weighted Average Grant Date Fair Value, beginning of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Shares Granted, 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 Shares Vested, Weighted Average Grant Date Fair Value (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Shares Forfeited, Weighted Average Exercise Price (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Shares, Unvested, Weighted Average Grant Date Fair Value, end of period (in dollars per share) Total Unrecognized Compensation Cost Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Expected to be Recognized over a Weighted Average Period Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Total Fair Value, Vested in period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Commitments and Contingencies Disclosure [Abstract] Lease Terms Range Minimum Lease Terms Range Minimum Lease Terms Range Minimum Lease Terms Range Maximum Lease Terms Range Maximum Lease Terms Range Maximum 2014 Total Capital Leases Capital Leases, Future Minimum Payments Due, Next Twelve Months 2015 Total Capital Leases Capital Leases, Future Minimum Payments Due in Two Years 2016 Total Capital Leases Capital Leases, Future Minimum Payments Due in Three Years 2017 Total Capital Leases Capital Leases, Future Minimum Payments Due in Four Years 2018 Total Capital Leases Capital Leases, Future Minimum Payments Due in Five Years Thereafter Total Capital Leases Capital Leases, Future Minimum Payments Due Thereafter Total minimum lease payments Total Capital Leases Capital Leases, Future Minimum Payments Due Less: imputed interest at interest rates ranging from 4.0% to 16.0% Imputed Interest Rate Imputed Interest Rate Present value of future minimum lease payments Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments Less: current portion of capital lease obligations Capital Lease Obligations, Current Long-term capital lease obligations Capital Lease Obligations, Noncurrent 2014 Total Operating Leases Operating Leases, Future Minimum Payments Due, Next Twelve Months 2015 Total Operating Leases Operating Leases, Future Minimum Payments, Due in Two Years 2016 Total Operating Leases Operating Leases, Future Minimum Payments, Due in Three Years 2017 Total Operating Leases Operating Leases, Future Minimum Payments, Due in Four Years 2018 Total Operating Leases Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Total Operating Leases Operating Leases, Future Minimum Payments, Due Thereafter Total minimum lease payments Total Operating Leases Operating Leases, Future Minimum Payments Due Imputed Interest Minimum Imputed Interest Minimum Imputed Interest Minimum Imputed Interest Rate Maximum Imputed Interest Rate Maximum Imputed Interest Rate Maximum Operating Leases, Rent Expense, Net Operating Leases, Rent Expense, Net Advertising Expense Advertising Expense Unrealized holding gains on available-for-sale investments Other income (expense) Environmental Remediation Obligations [Abstract] Site Contingency [Table] Site Contingency [Table] Environmental Remediation Site [Axis] Environmental Remediation Site [Axis] Environmental Remediation Site [Domain] Environmental Remediation Site [Domain] Benefit Change In Estimates Benefit Change In Estimates [Member] Benefit Change In Estimates [Member] 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. 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. Baton Rouge La Baton Rouge La [Member] Baton Rouge La [Member] Bridgeport, NJ Bridgeport NJ [Member] Bridgeport NJ [Member] Mercier Quebec Mercier Quebec [Member] Mercier Quebec [Member] Various Various [Member] Various [Member] Environmental Exit Cost by Property [Axis] Environmental Exit Cost by Property [Axis] Environmental Exit Costs, Name of Property [Domain] Environmental Exit Costs, Name of Property [Domain] Active Landfill Facilities Active Landfill Facilities [Member] Active Landfill Facilities [Member] Inactive Landfill Facilities Inactive Landfill Facilities [Member] Inactive Landfill Facilities [Member] Superfund Landfill Sites Owned By Third Parties Superfund Landfill Sites Owned By Third Parties [Member] Superfund Landfill Sites Owned By Third Parties [Member] Closed incinerator and landfill Closed Incinerator And Landfill [Member] Closed Incinerator And Landfill [Member] Closed incinerator Closed Incinerator [Member] Closed Incinerator [Member] Idled incinerator and legal proceedings Idled Incinerator And Legal Proceedings [Member] Idled Incinerator And Legal Proceedings [Member] All other incinerators, landfills, wastewater treatment facilities and service centers (104 facilities) All Other Incinerators Landfills Wastwater Threatment Facilities And Service Centers [Member] All Other Incinerators Landfills Wastwater Threatment Facilities And Service Centers [Member] Remedial liabilities Site Contingency [Line Items] Changes to remedial liabilities Accrual for Environmental Loss Contingencies [Roll Forward] Balance at the beginning of the period Accrual for Environmental Loss Contingencies Liabilities assumed in Evergreen acquisition 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 Number of Sites Number of Sites Number of Sites Accrual for Environmental Loss Contingencies, Net [Abstract] Accrual for Environmental Loss Contingencies, Gross, Fiscal Year Maturity [Abstract] 2014 Accrual for Environmental Loss Contingencies, Undiscounted, Due in Next Twelve Months 2015 Accrual for Environmental Loss Contingencies, Undiscounted, Due in Second Year 2016 Accrual for Environmental Loss Contingencies, Undiscounted, Due in Third Year 2017 Accrual for Environmental Loss Contingencies, Undiscounted, Due in Fourth Year 2018 Accrual for Environmental Loss Contingencies, Undiscounted, Due in Fifth Year Thereafter Accrual for Environmental Loss Contingencies, Undiscounted, Due after Fifth Year Undiscounted remedial liabilities Accrual for Environmental Loss Contingencies, Gross Less: Discount Accrual for Environmental Loss Contingencies, Discount Total remedial liabilities Possible Increase in Total Remedial Liabilities Possible Increase in Total Remedial Liabilities Possible Increase in Total Remedial Liabilities Accrual for Environmental Loss Contingencies, Threshold For Disclosure Accrual for Environmental Loss Contingencies, Threshold For Disclosure Accrual for Environmental Loss Contingencies, Threshold For Disclosure % of Total Accrual for Environmental Loss Contingencies, Percent of Total Accrual for Environmental Loss Contingencies, Percent of Total Reasonably Possible Additional Liabilities(1) Environmental Exit Costs, Reasonably Possible Additional Losses, High Estimate Number Of Facility By Type Number Of Facility By Type Number Of Facility By Type Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Unsecured Senior Notes 2020 Unsecured Senior Notes 2020 [Member] Unsecured Senior Notes 2020 [Member] Unsecured Senior Notes 2021 Unsecured Senior Notes 2021 [Member] Unsecured Senior Notes 2021 [Member] Financing arrangements Debt Instrument [Line Items] Summary of the entity's financial arrangements Schedule of Long-term Debt Instruments [Table Text Block] Schedule of redemption prices expressed as percentages of the principal amount Schedule of Debt Instrument Redemption Price [Table Text Block] Tabular disclosure containing future redemption prices of a debt instrument expressed as a percentage of the principal amount. FINANCING ARRANGEMENTS Debt Disclosure [Text Block] Subsequent Events Subsequent Events [Text Block] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2000 Equity Incentive Plan 2000 Equity Incentive Plan [Member] 2000 equity Incentive Plan [Member] 2010 Equity Incentive Plan 2010 Equity Incentive Plan [Member] 2010 Equity Incentive Plan [Member] Restricted Stock Restricted Stock [Member] Options outstanding, number (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Share-based Compensation Arrangement by share-bases Payment Award, Award vesting Period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Allocated Share-based Compensation Expense Allocated Share-based Compensation Expense Total income tax benefit from compensation cost Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Statement [Table] Statement [Table] 2005 Employee Stock Purchase Plan Employee Stock Purchase Plan 2005 [Member] 2005 Employee Stock Purchase Plan [Member] Last Day of the quarterly Offering Last Day of the quarterly Offering [Member] Last Day of the quarterly Offering [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Fair Value, Inputs, Level 1 Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 2 Fair Value, Inputs, Level 2 [Member] Defined Contribution Plan [Axis] Defined Contribution Plan [Axis] Defined Contribution Plan [Axis] Defined Contribution Plan [Domain] Defined Contribution Plan [Domain] Defined Contribution Plan [Domain] United States Defined Contribution Plan United States Defined Contribution Plan [Member] United States Defined Contribution Plan [Member] Canadian Defined Contribution Plan Canadian Defined Contribution Plan [Member] Canadian Defined Contribution Plan [Member] Employee Stock Purchase Plan, Number of Shares Authorized Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Quarterly Offerings of Shares Quarterly Offerings of Shares Quarterly Offerings of Shares Share Based Compensation Arrangement By Share Based Payment Award, Additional Shares Authorized Share Based Compensation Arrangement By Share Based Payment Award, Additional Shares Authorized Share Based Compensation Arrangement ByShare Based Payment Award, Additional Shares Authorized Common Stock, Capital Shares Reserved for Future Issuance Common Stock, Capital Shares Reserved for Future Issuance Maximum Employee Subscription Rate Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate Payroll Deduction to Purchase Common Stock Payroll Deduction to Purchase Common Stock Payroll Deduction to Purchase Common Stock Discount from Market Price at Offering Date Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date Weighted Average per Share Fair Values of the Purchase Rights (in dollars per share) Weighted Average per Share Fair Values of the Purchase Rights Weighted Average per Share Fair Values of the Purchase Rights Number of active non-supervisory Canadian employees Number of active non-supervisory Canadian employees Number of active non-supervisory Canadian employees Defined Benefit Plan, Net Periodic Benefit Cost Defined Benefit Plan, Net Periodic Benefit Cost Pension assets measured at fair value Defined Benefit Plan, Fair Value of Plan Assets Defined Benefit Plan, Benefit Obligation Defined Benefit Plan, Benefit Obligation Defined Contribution Plan, Cost Recognized Defined Contribution Plan, Cost Recognized ACCRUED EXPENSES Accrued Expenses Disclosure [Text Block] The entire disclosure for accrued expenses at the end of the reporting period. Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Senior unsecured notes Unsecured Debt [Member] Senior secured notes Senior Notes [Member] Revolving credit facility Line of Credit [Member] Letters of credit Letter of Credit [Member] Previous revolving credit facility Prior Line Of Credit [Member] Details pertaining to the prior line of credit facility which was replaced with a new facility. Secured Senior Notes 2016 Secured Senior Notes 2016 [Member] Secured Senior Notes 2016 [Member] Debt Instrument, Variable Rate Base [Axis] Debt Instrument, Variable Rate Base [Axis] The alternative reference rates that may be used to calculate the variable interest rate of the debt instrument. Debt Instrument, Variable Rate Base [Domain] Debt Instrument, Variable Rate Base [Domain] Identification of the reference rate that is used to calculate the variable interest rate of the debt instrument. LIBOR loans Debt Instrument Variable Rate Base On LIBOR Loans Member The base rate used to calculate the variable interest rate on the LIBOR loans. Base rate loans Debt Instrument Variable Rate Base On Base Rate Loans [Member] The base rate used to calculate the variable interest rate on the base rate loans. Redeemable Debt Redemption [Axis] Redeemable Debt Redemption [Axis] Redeemable Debt Redemption [Axis] Redeemable Debt Redemption [Domain] Redeemable Debt Redemption [Domain] Redeemable Debt Redemption [Domain] Redeemable Debt Redemption Rate of 107.625 Percent Redeemable Debt Redemption Rate of 107.625 Percent [Member] Redeemable Debt Redemption Rate of 107.625 Percent [Member] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Clean Harbors, Inc. Parent Company [Member] Canadian subsidiaries Subsidiaries [Member] Long-term Debt, Gross Long-term Debt, Gross Long-term obligations Long-term Debt, Excluding Current Maturities Senior secured notes, interest rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Long-term Debt, Fair Value Long-term Debt, Fair Value 2016 Long-term Debt Redemption, Price During Twelve Month Period, Year 1, as Percentage of Principal Amount Represents the redemption price as a percentage of the principal amount at which the debt instrument may be redeemed during the 12-month period commencing on August 15, 2012. 2017 Long-term Debt Redemption Price, During Twelve Month Period, Year 2, as Percentage of Principal Amount Represents the redemption price as a percentage of the principal amount at which the debt instrument may be redeemed during the 12-month period commencing on August 15, 2013. 2018 and thereafter Long-term Debt Redemption Price During Twelves, Year 3 and thereafter, as Percentage of Principal Amount Represents the redemption price as a percentage of the principal amount at which the debt instrument may be redeemed during the 12-month period commencing on August 15, 2014 and thereafter. Long-term Debt Redemption With Net Proceeds from Equity offerings as Percentage of Principal Amount Long-term Debt Redemption With Net Proceeds from Equity offerings as Percentage of Principal Amount Represents the maximum percentage of the aggregate principal amount of debt instruments that may be redeemed with net proceeds of certain equity offerings prior to August 15, 2012. Percentage of redemption price to principle amount (as a percent) Long-term Debt Redemption Price with Net Proceeds from Equity offerings as Percentage of Principal Amount Represents the redemption price as a percentage of the principal amount at which the debt instruments may be redeemed with net proceeds of certain equity offerings prior to August 15, 2012. Percentage Of Aggregate Principle Of Debt Percentage Of Aggregate Principle Of Debt Percentage Of Aggregate Principle Of Debt Long-term Debt Redemption, Price as Percentage of Principal Amount Long-term Debt Redemption, Price as Percentage of Principal Amount Represents the redemption price as a percentage of the principal amount, at which the entity may redeem some or all of the debt instruments prior to August 15, 2012. Revolving credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Variable interest rate, basis Debt Instrument, Description of Variable Rate Basis Debt Instrument Basis Spread on Variable Rate Low End of Range Debt Instrument Basis Spread on Variable Rate Low End of Range Minimum percentage points added to the reference rate to compute the variable rate on the debt instrument. Applicable margin on variable interest rate basis, high end of range (as a percent) Debt Instrument Basis Spread on Variable Rate High End of Range Maximum percentage points added to the reference rate to compute the variable rate on the debt instrument. Credit Available, Subject to Percentage of Accounts Receivable Credit Available, Subject to Percentage of Accounts Receivable Credit Available, Subject to Percentage of Accounts Receivable Credit Available, Subject to Percentage of Cash Deposited Credit Available, Subject to Percentage of Cash Deposited Credit Available, Subject to Percentage of Cash Deposited Line Of Credit Facility Borrowing Capacity Line Of Credit Facility Borrowing Capacity Line Of Credit Facility Borrowing Capacity Letters of Credit Outstanding, Amount Letters of Credit Outstanding, Amount Principles of Consolidation Consolidation, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Reclassifications Comparability of Prior Year Financial Data, Policy [Policy Text Block] Fair Value Valuation Hierarchy Fair Value Measurement, Policy [Policy Text Block] Cash, Cash Equivalents and Uncashed Checks Cash and Cash Equivalents, Policy [Policy Text Block] Marketable Securities Marketable Securities, Policy [Policy Text Block] Allowances for Doubtful Accounts Allowances For Doubtful Accounts [Policy Text Block] Disclosure of accounting policy for doubtful accounts Credit Concentration Credit Concentration [Policy Text Block] The policy for concentration of credit risks in accounts receivable Unbilled Receivables Trade and Other Accounts Receivable, Unbilled Receivables, Policy [Policy Text Block] Deferred Costs Relating to Deferred Revenue Revenue Recognition, Deferred Revenue [Policy Text Block] Inventories and Supplies Inventory Supplies, Policy [Policy Text Block] Prepaid Expenses and Other Current Assets Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] Property, Plant and Equipment (excluding landfill assets) Property, Plant and Equipment, Policy [Policy Text Block] Goodwill and Intangible Assets Goodwill and Intangible Assets, Policy [Policy Text Block] Leases Lease, Policy [Policy Text Block] Landfill Accounting Land Fill accounting [Policy Text Block] Describes an entity's accounting policy for landfill accounting, including determination of the cost basis of the landfill and related asset retirement costs. Non-Landfill Closure and Post-Closure Liabilities Non-landfill Closure and Post-Closure Liabilities [Policy Text Block] Non-landfill Closure and Post-Closure Liabilities [Policy Text Block] Remedial Liabilities Regulatory Environmental Costs, Policy [Policy Text Block] Derivative Financial Instruments Derivatives, Policy [Policy Text Block] Letters of Credit Letters of Credit [Policy Text Block] Letters of Credit [Policy Text Block] Foreign Currency Foreign Currency Transactions and Translations Policy [Policy Text Block] Revenue Recognition and Deferred Revenue Revenue Recognition, Policy [Policy Text Block] Advertising Expense Advertising Cost, Policy, Expensed Advertising Cost [Policy Text Block] Stock-Based Compensation Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Earnings Per Share (EPS) Earnings Per Share, Policy [Policy Text Block] Business Combinations Business Combinations Policy [Policy Text Block] Recent Accounting Pronouncements Revenue Recognition, Multiple-deliverable Arrangements, Description [Policy Text Block] 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 Prepaid Supplies Award Vesting Period (in years) Expected Forfeiture Rate Employees Number of Shares, Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Shares Forfeited, Weighted Average Grant Date Fair Value (in dollars per share) Business Combinations [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Peak Energy Services Ltd.'s ('Peak') Peak Energy Services Ltd.'s (Peak) [Member] Details pertaining to acquisition of Peak Energy Services Ltd.'s (Peak). 2011 Acquisitions Third Quarter 2011 Acquisitions [Member] Third Quarter 2011 Acquisitions [Member] Technical Services Industrial Services Business Acquisition [Line Items] Business Acquisition [Line Items] Percentage of outstanding common shares of acquiree already owned by company (as a percent) Business Acquisition, Percentage Ownership Of Acquiree Prior to Acquisition Represents the percentage of outstanding common shares of the acquiree already owned by the company. Total purchase price Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Exchange rate translation Foreign Currency Exchange Rate, Translation Purchase price, cash assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Assumed debt Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt Fair value of common shares in acquiree Business Acquisition Purchase Price Allocation Current Assets Cash and Cash Equivalents Assumed for Debt Repayment Represents the amount of cash and cash equivalents assumed in a business combination for repaying debt of acquired entity. Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value Gain loss recognized in other income previously held as common shares Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain (Loss), Net Summary of recognized assets acquired and liabilities assumed Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract] Current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets Property, plant and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Customer relationships and other intangibles Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Other assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets Current liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities Asset retirement obligations Business Acquisition Purchase Price Allocation Asset Retirement Obligations and Remedial Liabilities Business Acquisition Purchase Price Allocation Asset Retirement Obligations and Remedial Liabilities Other liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other 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 Goodwill Total Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net Business Combination, Acquired Receivables, Fair Value Business Combination, Acquired Receivables, Fair Value Customer receivables, gross amount due Business Acquisition, Purchase Price Allocation Current Assets, Customer Receivables Gross Amount Due Represents the gross amount due of customer receivables acquired. Post-closing adjustments Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Contingent Liability Acquisition related costs Business Combination, Acquisition Related Costs STOCK-BASED COMPENSATION AND EMPLOYEE BENEFIT PLANS Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Schedule of Inventory Schedule of Inventory, Current [Table Text Block] Schedule of Condensed Financial Statements [Table] Condensed Financial Statements [Table] U.S. Guarantor Subsidiaries Guarantor Subsidiaries [Member] Foreign Non-Guarantor Subsidiaries Non-Guarantor Subsidiaries [Member] Consolidating Adjustments Consolidation, Eliminations [Member] Consolidating statement of income Condensed Consolidating Statements of Operations [Line Items] -- None. No documentation exists for this element. -- Service revenues Sales Revenue, Services, Net Product revenues Sales Revenue, Goods, Net Total revenues 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 Other income (expense) Loss on early extinguishment of debt Interest (expense) income, net 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 Income Tax Expense (Benefit) Net income Other comprehensive income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent BUSINESS COMBINATIONS Business Combination Disclosure [Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Expected amortization Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] 2014 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2015 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2016 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2017 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2018 Finite-Lived Intangible Assets, Amortization Expense, Year Five Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Total Finite-Lived Intangible Assets, Net 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. Product Liability Contingency [Table] Product Liability Contingency [Table] Product Liability Contingency [Line Items] Product Liability Contingency [Line Items] Deductible Health Insurance Policy Deductible Health Insurance Policy Deductible Health Insurance Policy Deductible per Occurrence for Workers Compensation Deductible per Occurrence for Workers Compensation Deductible per Occurrence for Workers Compensation Deductible per Occurrence for General Liability Deductible per Occurrence for General Liability Deductible per Occurrence for General Liability Deductible per Occurrence for Vehicle Liability Deductible per Occurrence for Vehicle Liability Deductible per Occurrence for Vehicle Liability Retention for Environmental Impairment Retention for Environmental Impairment Retention for Environmental Impairment Self-Insurance Liabilities Self-Insurance Liabilities Self-Insurance Liabilities Weighted average risk free discount rate for self insurance liabilities Financial Guarantee Insurance Contracts, Claim Liability, Weighted Average Risk Free Discount Rate 2014 Anticipated Self-Insurance Payments Year One Anticipated Self-Insurance Payments Year One 2015 Anticipated Self-Insurance Payments Year Two Anticipated Self-Insurance Payments Year Two 2016 Anticipated Self-Insurance Payments Year Three Anticipated Self-Insurance Payments Year Three 2017 Anticipated Self-Insurance Payments Year Four Anticipated Self-Insurance Payments Year Four 2018 Anticipated Self-Insurance Payments Year Five Anticipated Self-Insurance Payments Year Five Thereafter Anticipated Self-Insurance Payments Thereafter Anticipated Self-Insurance Payments Thereafter Undiscounted self-insurance liabilities Undiscounted Self-Insurance Liabilities Undiscounted Self-Insurance Liabilities Less: Discount Self-Insurance Discount Rate Self-Insurance Discount Rate Total self-insurance liabilities (included in accrued expenses) Self Insurance Reserve GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill and Intangible Assets Disclosure [Text Block] Statement of Stockholders' Equity [Abstract] Common Stock Common Stock [Member] Treasury Stock Treasury 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 (loss) Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Earnings Retained Earnings [Member] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity Balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Balance (in shares) Shares, Issued Elimination of treasury stock Treasury Stock, Retired, Cost Method, Amount Other comprehensive income (loss) 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 Shares held under employee participation plan Shares Held under Employee Participation Plan. Value of 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. Issuance of common stock, net of issuance costs Stock Issued During Period, Value, New Issues Issuance of common stock, net of issuance costs (in shares) Stock Issued During Period, Shares, New Issues Issuance costs related to issuances 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 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) Schedule of Finite-Lived Intangible Assets by Major Class [Table] Schedule of Finite-Lived Intangible Assets [Table] 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 and supplier relationships Customer Relationships [Member] Other intangible assets Other Intangible Assets [Member] Total amortizable permits and other intangible assets Finite Lived Total [Member] Finite Lived Total [Member] Indefinite-lived Intangible Assets by Major Class [Axis] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Trademarks and trade names Trademarks [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 Net Intangible Assets, Net (Excluding Goodwill) Acquired Indefinite-lived Intangible Asset, Amount Indefinite-lived Intangible Assets Acquired Finite and Indefinite Lived Intangibles Gross Finite and Indefinite Lived Intangibles Gross Finite and Indefinite Lived Intangibles Gross Weighted Average Amortization Period (in years) Acquired Finite-lived Intangible Assets, Weighted Average Useful Life STOCKHOLDERS' EQUITY Stockholders' Equity Note Disclosure [Text Block] Other 2012 Acquisitions Other 2012 Acquisitions [Member] Other 2012 Acquisitions [Member] Preliminary Allocations Measurement Period Adjustments Scenario, Adjustment [Member] Cash paid for Peak common shares Payments to Acquire Businesses, Gross Issuance of acquisition-related common stock, net Stock Issued During Period, Value, Acquisitions Stock Issued During Period, Shares, Acquisitions Stock Issued During Period, Shares, Acquisitions Proceeds from Issuance of Private Placement Proceeds from Issuance of Private Placement Business Acquisition, Cost of Acquired Entity, Transaction Costs Business Acquisition, Transaction Costs Summary of recognized assets acquired and liabilities assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract] Inventories and supplies Business Acquisition, Purchase Price Allocation, Inventory and Supplies BusinessAcquisitionPurchasePriceAllocationInventoryandSupplies Other current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other Permits and other intangibles Closure and post-closure liabilities Business Acquisition, Purchase Price Allocation, Post Closure Liabilities BusinessAcquisitionPurchasePriceAllocationPostClosureLiabilities Remedial liabilities, less current portion Other long-term liabilities Business Acquisition, Pro Forma Information 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) Number of Businesses Acquired Number of Businesses Acquired Assumed debt Insurance Accrued Insurance, Current Interest Interest Payable, Current 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 Accrued Liabilities, Current Schedule of Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Weighted Average Weighted Average [Member] Property, Plant and Equipment by Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Buildings and building improvements Building and Building Improvements [Member] Buildings Building [Member] Leasehold and building improvements Land, Buildings and 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] Capitalized software and computer equipment Computer Equipment [Member] Solar equipment Solar Equipment [Member] Represents the long-lived, depreciable asset which consists of a solar array that is used to provide electric power for a continuously operating groundwater decontamination pump and treatment system at a closed and capped landfill. Containers and railcars Railroad Transportation Equipment [Member] All other equipment All Other Equipment [member] Represents the long-lived, depreciable assets used to produce goods and services. Furniture and fixtures Furniture and Fixtures [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Estimated useful life (in years) Property, Plant and Equipment, Useful Life Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Foreign Country Foreign Tax Authority [Member] Change in Tax Benefits Change in Tax Benefits [Member] Change in Tax Benefits [Member] Nature of Uncertainty [Axis] Nature of Uncertainty [Axis] Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Nature of Uncertainty [Domain] Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Nature of Uncertainty [Domain] Expiring Of Statutes of Limitations [Member] Expiring Of Statutes of Limitations [Member] Expiring Of Statutes of Limitations [Member] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Unrecognized Tax Benefits as of January 1 Unrecognized Tax Benefits Gross adjustments in tax positions Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions Gross increases due to current year acquisitions Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Settlements Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Expiration of statute of limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Foreign currency translation Foreign Currency Transaction Gain (Loss), Unrealized Unrecognized Tax Benefits as of December 31 Unrecognized Tax Benefits, Period Increase (Decrease) Unrecognized Tax Benefits, Period Increase (Decrease) Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Expiring Statute of Limitations Related to Historical Canadian Business Combination Expiring Statute of Limitations Related to Historical Canadian Business Combination Expiring Statute of Limitations Related to Historical Canadian Business Combination Expiration of Various State Statute of Limitation Expiration of Various State Statute of Limitation Expiration of Various State Statute of Limitation Long-Lived Assets, by Name [Axis] Long-Lived Assets, by Name [Axis] Long-Lived Assets, by Name [Axis] Long-Lived Assets, by Name [Domain] Long-Lived Assets, by Name [Domain] Long-Lived Assets, by Name [Domain] Altair Altair [Member] Altair [Member] Buttonwillow Buttonwillow [Member] Buttonwillow [Member] Deer Park Deer Park [Member] Deer Park [Member] Deer Trail Deer Trail [Member] Deer Trail [Member] Grassy Mountain Grassy Mountain [Member] Grassy Mountain [Member] Kimball Kimball [Member] Kimball [Member] Lambton Lambton [Member] Lambton [Member] Lone Mountain Lone Mountain [Member] Lone Mountain [Member] Ryley Ryley [Member] Ryley [Member] Sawyer Sawyer [Member] Sawyer [Member] Westmorland Westmorland [Member] Westmorland [Member] Texas TEXAS California CALIFORNIA Colorado COLORADO Utah UTAH Nebraska NEBRASKA Ontario ONTARIO Oklahoma OKLAHOMA Alberta ALBERTA North Dakota NORTH DAKOTA Permitted Permitted [Member] Permitted [Member] Unpermitted Unpermitted [Member] Unpermitted [Member] Landfill assets Landfill [Member] Non-commercial landfills non-commercial landfills [Member] Non-Commercial Landfills [Member] Property, Plant and Equipment [Line Items] Amortization Amortization Application Approvals Approvals to Accept Waste, Maximum Approvals to Accept Waste, Maximum Number of Expansions Number of Expansions Number of Expansions Number of Service Locations Number of Service Locations With Unpermitted Expansion Number of Service Locations With Unpermitted Expansion Percentage of Airspace Remaining Percentage of Airspace Remaining Percentage of Airspace Remaining Landfill Sites Landfill Sites Landfill Sites Remaining Lives (Years) Finite-Lived Intangible Assets, Remaining Amortization Period Remaining Highly Probable Airspace Remaining Highly Probable Airspace Remaining Highly Probable Airspace in cubic yards Permitted, But Not Highly Probable Airspace Permitted, But Not Highly Probable Airspace Permitted, But Not Highly Probable Airspace Remaining Airspace Capacity [Roll Forward] Remaining Airspace Capacity [Roll Forward] Remaining Airspace Capacity [Roll Forward] Remaining capacity, beginning of period Probable Airspace Remaining Highly Probable Airspace Addition of highly probable airspace, net Addition Of Highly Probable Airspace Addition Of Highly Probable Airspace Consumed Consumed Airspace Consumed Airspace Remaining capacity, end of period Landfill Final Closure and Post-Closure Liabilities Landfill Final Closure and Post-Closure Liabilities Landfill Final Closure and Post-Closure Liabilities Regulatory Post-Closure Period for Landfill Regulatory Post-Closure Period for Landfill Regulatory Post-Closure Period for Landfill Inflation rate (as a percent) Inflation Rate The inflation rate that is applied to the amount of new asset retirement obligations, which are expected to arrive at the present value and that are recorded as of the balance sheet date. Non-landfill Closure and Post-Closure Liabilities (in years) Non Landfill Closure And Post Closure Term In Years Non Landfill Closure And Post Closure Term In Years Non-landfill Closure and Post-Closure Liabilities Non-landfill Closure and Post-Closure Liabilities Non-landfill Closure and Post-Closure Liabilities Schedule of asset classification and estimated useful life Property, Plant and Equipment [Table Text Block] Schedule of Property, Plant and Equipment, Landfill Assets Schedule of Property, Plant and Equipment, Landfill Assets [Table Text Block] Schedule of Property, Plant and Equipment, Landfill Assets [Table Text Block] Remaining Highly Probable Airspace Remaining Highly Probable Airspace [Table Text Block] Remaining Highly Probable Airspace [Table Text Block] Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions Parent Parent [Member] Condensed consolidating balance sheet Condensed Consolidating Balance Sheet [Line Items] -- None. No documentation exists for this element. -- Assets: Assets [Abstract] Cash and cash equivalents Intercompany receivables Receivables from Affiliates Subsidiaries and Holding Companies This element represents receivables from affiliates, subsidiaries and the holding company. Accounts receivable, net Accounts Receivable, Net, Current 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. Permits and other intangibles, net 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. Capital lease obligations, net 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 Total liabilities and stockholders' equity Liabilities and Equity Income Statement [Abstract] Revenues: Revenues [Abstract] Cost of revenues: (exclusive of items shown separately below) Cost of Revenue [Abstract] Interest expense, net of interest income of $507, $846, and $798, respectively Earnings per share: Basic (in dollars per share) Earnings Per Share, Basic Diluted (in dollars per share) Earnings Per Share, Diluted Shares used to compute earnings per share — Basic Shares used to compute earnings per share — Diluted QUARTERY DATA (UNAUDITED) [Table] Quarterly Data Unaudited [Table] QUARTERLY DATA (UNAUDITED) [Table] Senior Notes Quarterly [Line Items] Quarterly [Line Items] Quarterly [Line Items] Revenues Cost of revenues Gross profit Gross Profit Income from operations Basic income per share (in dollars per share) Diluted income per share (in dollars per share) Long-term Debt, Gross Marketable securities Marketable Securities, Current Investment Income, Interest Interest Income, Operating Asset Retirement Obligation Disclosure [Abstract] CLOSURE AND POST-CLOSURE LIABILITIES Asset Retirement Obligation Disclosure [Text Block] Condensed consolidating statement of cash flows Condensed Consolidating Statements of Cash Flows [Line Items] -- None. No documentation exists for this element. -- Net cash from operating activities Other Investment in subsidiaries Payments to Acquire Interest in Subsidiaries and Affiliates Issuance of senior secured notes, including premium Interest (payments) / received Dividends (paid) / received Dividends (paid) / received Interest (payments) / received Payments for Proceeds from Interest The interest paid or received on loans and other debt instruments during the current period. Intercompany debt Proceeds from Intercompany Debt This element represents the proceeds from intercompany debt. Schedule of Future Minimum Lease Payments for Capital Leases and Operating Leases Schedule of Future Minimum Lease Payments for Capital Leases and Operating Leases [Table Text Block] Schedule of Future Minimum Lease Payments for Capital Leases and Operating Leases [Table Text Block] Self-Insurance Liabilities Anticipated Payments Self-Insurance Liabilities Anticipated Payments [Table Text Block] Self-Insurance Liabilities Anticipated Payments [Table Text Block] Schedule of changes to goodwill Schedule of Goodwill [Table Text Block] Schedule of Finite-Lived Intangible Assets by Major Class Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of finite-lived intangible assets related to acquisition 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 Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Products and Services [Axis] Products and Services [Axis] Products and Services [Domain] Products and Services [Domain] Parts Cleaning Services Parts Cleaning Services [Member] Parts Cleaning Services [Member] Service period Deferred Revenue, Recognition, Service Period Deferred Revenue, Recognition, Service Period Property, Plant and Equipment INCOME TAXES Income Tax Disclosure [Text Block] QUARTERLY DATA (UNAUDITED) Quarterly Data Unaudited [Table Text Block] QUARTERLY DATA (UNAUDITED) [Table Text Block] COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Changes to remedial liabilities Schedule of Environmental Loss Contingencies by Site [Table Text Block] Remedial Liabilities Anticipated Payments for Each of the Next Five Years Remedial Liabilities Anticipated Payments for Each of the Next Five Years [Table Text Block] Remedial Liabilities Anticipated Payments for Each of the Next Five Years [Table Text Block] Environmental Exit Costs by Cost Environmental Exit Costs by Cost [Table Text Block] Schedule of Comprehensive Income (Loss) Comprehensive Income (Loss) [Table Text Block] Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Valuation and Qualifying Accounts [Abstract] Valuation and Qualifying Accounts Disclosure [Table] Valuation and Qualifying Accounts Disclosure [Table] Valuation Allowances and Reserves Type [Axis] Valuation Allowances and Reserves Type [Axis] Valuation Allowances and Reserves [Domain] Valuation Allowances and Reserves [Domain] Allowance for Doubtful Accounts Allowance for Doubtful Accounts [Member] Allowance for Sales Returns Allowance for Sales Returns [Member] Valuation Allowance on Deferred Tax Assets Valuation Allowance of Deferred Tax Assets [Member] Valuation and Qualifying Accounts Disclosure [Line Items] Valuation and Qualifying Accounts Disclosure [Line Items] Movement in Valuation Allowances and Reserves [Roll Forward] Movement in Valuation Allowances and Reserves [Roll Forward] Balance Beginning of Period Valuation Allowances and Reserves, Balance Additions (deductions) charged Valuation Allowances and Reserves, Charged to Cost and Expense Changes to Reserves Valuation Allowances and Reserves, Deductions Balance End of Period Valuation Allowance, Deferred Tax Asset, Change in Amount Valuation Allowance, Deferred Tax Asset, Change in Amount REMEDIAL LIABILITIES Environmental Loss Contingency Disclosure [Text Block] 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. Unsecured Senior Notes 2020 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 Liabilities assumed in Safety-Kleen acquisition Asset Retirement Obligations, Liabilities Assumed in Acquisitions Asset Retirement Obligations, Liabilities Assumed in 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. 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. Asset Retirement Obligations Discount Rate (as a percent) Asset Retirement Obligations Discount Rate Asset Retirement Obligations Discount Rate Environmental Property Sale, Disposal or Abandonment Costs Environmental Property Sale, Disposal or Abandonment Costs [Abstract] 2014 Anticipated Payment for Asset Retirement Obligations year One Anticipated Payment for Asset Retirement Obligations year One 2015 Anticipated Payment for Asset Retirement Obligations year Two Anticipated Payment for Asset Retirement Obligations year Two 2016 Anticipated Payment for Asset Retirement Obligations year Three Anticipated Payment for Asset Retirement Obligations year Three 2017 Anticipated Payment for Asset Retirement Obligations year Four Anticipated Payment for Asset Retirement Obligations year Four 2018 Anticipated Payment for Asset Retirement Obligations year Five Anticipated Payment for Asset Retirement Obligations year Five Thereafter Anticipated Payment for Asset Retirement Obligations, After Year Five Anticipated Payment for Asset Retirement Obligations, After Year Five Undiscounted closure and post-closure liabilities Undiscounted Closure and Post-Closure Liabilities Undiscounted Closure and Post-Closure Liabilities Less: Discount at credit-adjusted risk-free rate Discount Reserves Discount Reserves Less: Undiscounted estimated closure and post-closure liabilities relating to airspace not yet consumed Reserves to be Provided Over Remaining Site Lives Reserves to be Provided Over Remaining Site Lives Present value of closure and post-closure liabilities Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table] Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table] Evergreen Oil, Inc. Evergreen Oil, Inc [Member] Evergreen Oil, Inc [Member] Supplier relationships Acquired Finite-Lived Intangible Assets [Line Items] Acquired Finite-Lived Intangible Assets [Line Items] Cost Finite-lived Intangible Assets Acquired Weighted Average Amortization Period (in years) EARNINGS PER SHARE Earnings Per Share [Text Block] Schedule of Restricted Cash and Cash Equivalents [Table] Schedule of Restricted Cash and Cash Equivalents [Table] Concentration Risk by Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Accounts Receivable Accounts Receivable [Member] Sales Sales [Member] Restricted Cash and Cash Equivalents Items [Line Items] Restricted Cash and Cash Equivalents Items [Line Items] Concentration Risk Major Customers Over Benchmark Concentration Risk Major Customers Over Benchmark Concentration Risk Major Customers Over Benchmark Summary of recognized amounts of identifiable assets acquired and liabilities assumed Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Unaudited pro forma combined summary data 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. Percentage of all assets and liabilities of all business combinations Statement of Comprehensive Income [Abstract] Unrealized gains on available-for-sale securities, taxes Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax Reclassification adjustment for gains on available-for-sale securities included in net income, taxes Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Unfunded pension liability, taxes Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax Changes to goodwill Goodwill [Roll Forward] Goodwill, beginning of period Acquired from acquisitions Goodwill, Acquired During Period Increase from adjustments related to the acquisitions during the measurement period Goodwill, Purchase Accounting Adjustments Foreign currency translation Goodwill, Translation Adjustments Goodwill, end of period Schedule of Share-based Compensation, Stock Options, Activity Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] Schedule of Nonvested Performance-based Units Activity Schedule of Nonvested Performance-based Units Activity [Table Text Block] Schedule of Valuation and Qualifying Accounts Disclosure Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] Schedule of Income before Income Tax, Domestic and Foreign Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] Schedule of Components of Income Tax Expense (Benefit) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of Effective Income Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Summary of Income Tax Contingencies Summary of Income Tax Contingencies [Table Text Block] 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. SEGMENT REPORTING Segment Reporting Disclosure [Text Block] PROPERTY, PLANT, AND EQUIPMENT Property, Plant and Equipment Disclosure [Text Block] Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest [Abstract] Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest [Abstract] Domestic Income (Loss) from Continuing Operations before Income Taxes, Domestic Foreign Income (Loss) from Continuing Operations before Income Taxes, Foreign Components of Income Tax Expense (Benefit), Continuing Operations [Abstract] Components of Income Tax Expense (Benefit), Continuing Operations [Abstract] Current: Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal (i) Current Federal Tax Expense (Benefit) State Current State and Local Tax Expense (Benefit) Foreign Current Foreign Tax Expense (Benefit) Current Income Tax Expense (Benefit) Current Income Tax Expense (Benefit) Deferred Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal Deferred Federal Income Tax Expense (Benefit) State Deferred State and Local Income Tax Expense (Benefit) Foreign Deferred Foreign Income Tax Expense (Benefit) Deferred income taxes Deferred Income Tax Expense Benefit Net of Discontinued Operations Deferred Income Tax Expense Benefit Net of Discontinued Operations Net provision (benefit) for income taxes The Company's effective tax rate (including taxes on income from discontinued operations) (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. Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract] Effective Income Tax Rate Reconciliation, Amount [Abstract] Tax expense at US statutory rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount State income taxes, net of federal benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Foreign rate differential Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount Non-deductible transaction costs Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount Uncertain tax position releases Uncertain tax position releases, net of benefit Uncertain tax position releases, net of benefit Uncertain tax position interest and penalties Uncertain tax position interest and penalties, net of benefit Uncertain tax position interest and penalties, net of benefit Other Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Schedule of closure and post-closure liabilities Schedule of Change in Asset Retirement Obligation [Table Text Block] Schedule of Expected Payments Related to Asset Retirement Obligations Schedule of Expected Payments Related to Asset Retirement Obligations [Table Text Block] Schedule of Expected Payments Related to Asset Retirement Obligations [Table Text Block] Current assets: Assets, Current [Abstract] Cash and cash equivalents Accounts receivable, net of allowances aggregating $18,106 and $11,125, respectively 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 Inventories and supplies Prepaid expenses and other current assets Prepaid Expenses and Other Assets, Current This element represents current portion of prepaid expenses and other assets. 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 [Abstract] Deferred financing costs Deferred Finance Costs, Noncurrent, Net Other Other Assets, Noncurrent Total other assets Current liabilities: Liabilities, Current [Abstract] Current portion of capital lease obligations Accounts payable Accounts Payable, Current Deferred revenue Deferred Revenue and Credits, Current Accrued expenses 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 Liabilites [Abstract] Other Liabilites [Abstract] Closure and post-closure liabilities, less current portion of $5,884 and $8,791, respectively Accrued Capping, Closure, Post-closure and Environmental Costs, Noncurrent Remedial liabilities, less current portion of $23,587 and $19,545, 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 Commitments and contingent liabilities Commitments and Contingencies Stockholders' equity: Stockholders' Equity Attributable to Parent [Abstract] Authorized 80,000,000 shares; issued and outstanding 60,672,180 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 (loss) income Accumulated earnings Retained Earnings (Accumulated Deficit) Total stockholders' equity Land Land [Member] Asset retirement costs (non-landfill) Asset Retirement Obligation Costs [Member] Buildings and improvements Camp equipment Vehicles Equipment Furniture and fixtures Construction in progress Construction in Progress [Member] 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 Technical Services, Field Services, Industrial Services and Lodging Reporting Units Technical Services, Field Services, Industrial Services and Lodging Segments [Member] Technical Services, Field Services, Industrial Services and Lodging Segments [Member] Finite-Lived Intangible Assets [Line Items] Number of Reporting Units Number of Reporting Units Number of Reporting Units Percentage Fair Value Exceeded Carrying Value Percentage Fair Value Exceeded Carrying Value Percentage Fair Value Exceeded Carrying Value Finite-Lived Intangible Asset, Useful Life Finite-Lived Intangible Asset, Useful Life Finite-Lived Intangible Assets, Amortization Expense Amortization of Intangible Assets Prepaid and other current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets Deferred tax assets, less current portion Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets Noncurrent Valuation Allowance [Table] Valuation Allowance [Table] Valuation Allowance [Line Items] Valuation Allowance [Line Items] Components of Deferred Tax Assets and Liabilities [Abstract] Components of Deferred Tax Assets and Liabilities [Abstract] Deferred tax assets: Components of Deferred Tax Assets [Abstract] Workers compensation accrual Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation Provision for doubtful accounts Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts Closure, post-closure and remedial liabilities Deferred Tax Assets, Closure Post-Closure and Remedial Liabilities Deferred Tax Assets, Closure Post-Closure and Remedial Liabilities Accrued expenses Deferred Tax Assets, Accrued Expenses Deferred Tax Assets, Accrued Expenses Accrued compensation Deferred Tax Assets, accrued Compensation Deferred Tax Assets, accrued Compensation Net operating loss carryforwards(1) Deferred Tax Assets, Operating Loss Carryforwards Tax credit carryforwards(2) Deferred Tax Assets, Tax Credit Carryforwards Uncertain tax positions accrued interest and federal benefit Deferred Tax Assets, Uncertain Tax Positions Accrued Interest and Federal Benefit Deferred Tax Assets, Uncertain Tax Positions Accrued Interest and Federal Benefit Stock-based compensation Deferred Tax Assets, Stock-Based Compensation Deferred Tax Assets, Stock-Based Compensation Other Deferred Tax Assets, Other Total deferred tax assets Deferred Tax Assets, Net of Valuation Allowance Deferred tax liabilities: Components of Deferred Tax Liabilities [Abstract] Property, plant and equipment Deferred Tax Liabilities, Property, Plant and Equipment Permits and other intangible assets Deferred Tax Liabilities Permits and Customer Database Deferred Tax Liabilities,Permits and Customer Database Total deferred tax liabilities Deferred Tax Liabilities, Gross Deferred Tax Liabilities, Gross Total net deferred tax liability before valuation allowance Deferred Tax Assets, Net Less valuation allowance Net deferred tax liabilities Deferred Tax Liabilities, Net, Current State and local operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards, State and Local Domestic operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards, Domestic Operating loss carryforwards Operating Loss Carryforwards Foreign tax credit carryforwards Deferred Tax Assets, Tax Credit Carryforwards, Foreign Increase (decrease) tax benefit from stock options exercised Increase (Decrease) Tax Benefit From Stock Options Exercised Increase (Decrease) Tax Benefit From Stock Options Exercised Income tax benefit related to stock option exercises Deferred Tax Expense from Stock Options Exercised ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME Comprehensive Income (Loss) Note [Text Block] Other comprehensive (loss) income: Other Comprehensive Income (Loss), Net of Tax [Abstract] Unrealized gains on available-for-sale securities (net of taxes of $208, $177 and $174, respectively) Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Reclassification adjustment for gains on available-for-sale securities included in net income (net of taxes of $379) Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Unfunded pension liability (net of taxes of $123, $231 and $58, respectively) Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax, Portion Attributable to Parent Other comprehensive (loss) income Reconciliation of basic and diluted earnings per share computations Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Regulatory Liabilities [Table] Schedule of Regulatory Liabilities [Table] Regulatory Liabilities [Line Items] Regulatory Liabilities [Line Items] Accrual for Environmental Loss Contingencies Period of Time In Years Over Which Business Acquisitions Have Been Acquired Period of Time In Years Over Which Business Acquisitions Have Been Acquired Period of Time In Years Over Which Business Acquisitions Have Been Acquired Superfund sites owned by third parties 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. Superfund sites 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. Remedial Liabilities at Acquisition Remedial Liabilities, Inflation Rate at Acquisition Remedial Liabilities, Inflation Rate at Acquisition Remedial Liabilities Discounted Risk Free Interest Rate Remedial Liabilities Discounted Risk Free Interest Rate Remedial Liabilities Discounted Risk Free Interest Rate Operations Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] United States and Puerto Rico United States and Puerto Rico [Member] United States and Puerto Rico [Member] United States UNITED STATES Canada CANADA Other International Locations Other International Locations [Member] Other International Locations [Member] Statement [Line Items] Segment reporting information revenue percent Segment Reporting Information Revenue Percent Segment Reporting Information Revenue Percent Property Plant And Equipment Net Percent Property Plant And Equipment Net Percent Property Plant And Equipment Net Percent Intangible Assets Net Excluding Goodwill Percent Intangible Assets Net Excluding Goodwill Percent Intangible Assets Net Excluding Goodwill Percent Total intangible assets and goodwill Intangible Assets, Net (Including Goodwill) Total assets Stock Options Employee Stock Option [Member] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Number of Stock Options Outstanding, beginning of period (in shares) Stock Options, Shares Exercised Number of Stock Options Outstanding and Vested, end of period (in shares) Stock Options, Weighted Average Exercise Price, Outstanding beginning of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Stock Options, Weighted Average Exercise Price, Forfeited (in dollars per share) Stock Options, Weighted Average Exercise Price, Exercised (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Stock Options, Weighted Average Exercise Price, Outstanding and Vested end of period (in dollars per share) Stock Options, Outstanding, Weighted Average Remaining Contractual Term (in years), beginning of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Stock Options, Outstanding, Weighted Average Remaining Contractual Term (in years), end of period Stock Options, Outstanding, Aggregate Intrinsic Value, beginning of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Stock Options, Outstanding, Aggregate Intrinsic Value, end of period Stock Options, Total Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value 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] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 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. Stock Issued During Period, Value, Other Stock Issued During Period, Value, Other Stock Issued During Period, Per Share Value, New Issues (in dollars per share) Stock Issued During Period, Per Share Value, New Issues Stock Issued During Period, Per Share Value, New Issues 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. Ville Mercier Ville Mercier [Member] Represents the details that pertain to the Ville Mercier. Superfund Proceedings Superfund Proceedings [Member] Represents the indemnification obligations under federal or state Superfund laws. Wichita Property Wichita Property [Member] Represents the details that pertain to Wichita Property. Certain Other Third Party Sites Certain Other Third Party Sites [member] Represents the details that pertain to Certain Other Third Party Sites. Federal and State Enforcement Actions Federal and State Enforcement Actions [Member] The regulatory proceedings that are relating primarily to waste treatment, storage or disposal facilities. Contingencies Contingencies [Line Items] -- None. No documentation exists for this element. -- Legal and Administrative Proceedings Legal and Administrative Proceedings [Abstract] -- None. No documentation exists for this element. -- Loss Contingency Accrual, at Carrying Value Loss Contingency Accrual 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. Reserves relating to legal and administrative proceedings Loss Contingency, Range of Loss The estimated minimum amount of possible loss from the federal and state enforcement actions. 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. General Damages Sought Loss Contingency, General Damages Sought, Value Loss Contingency, General Damages Sought, Value Punitive Damages Sought Loss Contingency, Punitive Damages Sought, Value Loss Contingency, Punitive Damages Sought, Value Accrued remedial liabilities Loss Contingency, Claims Settled and Dismissed, Number Loss Contingency, Claims Settled and Dismissed, Number Number of proceedings Loss Contingency, Pending Claims, Number Number of customers filing a complaint Loss Contingency, Number of Customers Filing Complaint Loss Contingency, Number of Customers Filing Complaint. Superfund Proceedings Superfund Proceedings [Abstract] -- None. No documentation exists for this element. -- Number of sites subject to proceedings under federal or state superfund laws 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 Number of sites owned by third parties subject to proceedings under federal or state Superfund laws 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. 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 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. Number of sites for which environmental remediation expense is not required 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 which potential liability could exceed $100,000 Number of Sites, Potential Liability Exceeds Substantial Quota Number of Sites, Potential Liability Exceeds Substantial Quota 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. 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, Notice Received Number of Sites Owned by Third Party The number of notices received from owners of third party sites related to the CSD assets seeking indemnification from the company. Federal and State Enforcement Actions Federal and State Enforcement Actions [Abstract] -- None. No documentation exists for this element. -- Sanctions relating to waste treatment Loss Contingency, Range of Possible Loss, Minimum