Credit Available Subject to Percentage of Accounts Receivable

No definition available.

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Balance Type:	na
Period Type:	duration

- Definition

Credit Available Subject to Percentage of Cash Deposited

+ References

No definition available.

+ Details

Name:	clh_CreditAvailableSubjecttoPercentageofCashDeposited
Namespace Prefix:	clh_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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.

+ References

No definition available.

+ Details

Name:	clh_LongTermDebtRedemptionPriceAsPercentageOfPrincipalAmount
Namespace Prefix:	clh_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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.

+ References

No definition available.

+ Details

Name:	clh_LongTermDebtRedemptionPriceDuringTwelveMonthPeriodYear1AsPercentageOfPrincipalAmount
Namespace Prefix:	clh_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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.

+ References

No definition available.

+ Details

Name:	clh_LongTermDebtRedemptionPriceDuringTwelveMonthPeriodYear2AsPercentageOfPrincipalAmount
Namespace Prefix:	clh_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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.

+ References

No definition available.

+ Details

Name:	clh_LongTermDebtRedemptionPriceDuringTwelvesYear3AndThereafterAsPercentageOfPrincipalAmount
Namespace Prefix:	clh_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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.

+ References

No definition available.

+ Details

Name:	clh_LongTermDebtRedemptionPriceWithNetProceedsFromEquityOfferingsAsPercentageOfPrincipalAmount
Namespace Prefix:	clh_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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.

+ References

No definition available.

+ Details

Name:	clh_LongTermDebtRedemptionWithNetProceedsFromEquityOfferingsAsPercentageOfPrincipalAmount
Namespace Prefix:	clh_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage Of Aggregate Principle Of Debt

+ References

No definition available.

+ Details

Name:	clh_PercentageOfAggregatePrincipleOfDebt
Namespace Prefix:	clh_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentDescriptionOfVariableRateBasis
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentRepurchaseAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermDebtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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- Details

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- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_BaseRateMember
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- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
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FINANCING ARRANGEMENTS (Details) (USD $)	0 Months Ended	12 Months Ended	0 Months Ended
FINANCING ARRANGEMENTS (Details) (USD $)	Jan. 17, 2012	Dec. 31, 2014	Jan. 17, 2013	Dec. 31, 2013	Jul. 30, 2012	Dec. 07, 2012	Dec. 28, 2012
Financing arrangements
Long-term obligations		$ 1,395,000,000us-gaap_LongTermDebtNoncurrent		$ 1,400,000,000us-gaap_LongTermDebtNoncurrent
Line of credit facility, remaining borrowing capacity		238,400,000		259,700,000
Letters of credit outstanding, amount		134,500,000		140,300,000
LIBOR loans
Financing arrangements
Variable interest rate, basis	LIBOR
Base rate loans
Financing arrangements
Variable interest rate, basis	BofA's base rate
Clean Harbors, Inc.
Financing arrangements
Long-term obligations		1,395,000,000		1,400,000,000
Credit available, subject to percentage of accounts receivable		85.00%
Credit available, subject to percentage of cash deposited		100.00%
Canadian subsidiaries
Financing arrangements
Credit available, subject to percentage of accounts receivable		85.00%
Credit available, subject to percentage of cash deposited		100.00%
Senior notes \| Unsecured senior sotes 2020
Financing arrangements
Long-term obligations		800,000,000		800,000,000
Long-term debt, gross					800,000,000
Senior secured notes, interest rate (as a percent)					5.25%
Long-term debt, fair value		804,000,000		822,000,000
2016		102.625%
2017		101.313%
2018 and thereafter		100.00%
Percentage of aggregate principle of debt		65.00%
Senior notes \| Unsecured senior sotes 2020 \| Redeemable debt redemption rate percentage
Financing arrangements
Percentage of redemption price to principle amount (as a percent)		105.25%
Senior notes \| Unsecured senior notes 2021
Financing arrangements
Long-term obligations		595,000,000		600,000,000
Long-term debt, gross						600,000,000.0
Repurchased amount		5,000,000
Long-term debt, fair value		595,000,000		604,200,000
2016		102.563%
2017		101.281%
2018 and thereafter		100.00%
Long-term debt redemption with net proceeds from equity offerings as percentage of principal amount		35.00%
Percentage of redemption price to principle amount (as a percent)		105.125%
Percentage of aggregate principle of debt		65.00%
Long-term debt redemption, price as percentage of principal amount		100.00%
Senior notes \| Unsecured senior notes 2021 \| Safety-Kleen
Financing arrangements
Senior secured notes, interest rate (as a percent)						5.125%	5.125%
Revolving credit facility
Financing arrangements
Revolving credit facility, maximum borrowing capacity			400,000,000
Revolving credit facility \| Clean Harbors, Inc.
Financing arrangements
Revolving credit facility, maximum borrowing capacity			300,000,000
Revolving credit facility \| Canadian subsidiaries
Financing arrangements
Revolving credit facility, maximum borrowing capacity			100,000,000
Revolving credit facility \| Minimum \| LIBOR loans
Financing arrangements
Debt instrument, basis spread on variable rate			1.50%
Revolving credit facility \| Minimum \| Base rate loans
Financing arrangements
Debt instrument, basis spread on variable rate			0.50%
Revolving credit facility \| Maximum \| LIBOR loans
Financing arrangements
Debt instrument, basis spread on variable rate			2.00%
Revolving credit facility \| Maximum \| Base rate loans
Financing arrangements
Debt instrument, basis spread on variable rate			1.00%
Letters of credit
Financing arrangements
Revolving credit facility, maximum borrowing capacity			325,000,000
Letters of credit \| Clean Harbors, Inc.
Financing arrangements
Revolving credit facility, maximum borrowing capacity			250,000,000
Letters of credit \| Canadian subsidiaries
Financing arrangements
Revolving credit facility, maximum borrowing capacity			75,000,000