XML 115 R102.htm IDEA: XBRL DOCUMENT
v3.22.0.1

COMMITMENTS AND CONTINGENCIES - Legal and Administrative Proceedings (Details) $ in Millions, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 USD ($) proceeding claim | Dec. 31, 2012 CAD ($) | Dec. 31, 1999 municipality | Dec. 31, 1968 permit | Dec. 31, 2020 USD ($)
Legal and Administrative Proceedings |  |  |  |  |
Loss contingency accrual | $ 36.1 |  |  |  | $ 29.8
Product Liability Cases |  |  |  |  |
Legal and Administrative Proceedings |  |  |  |  |
Number of proceedings | proceeding | 61 |  |  |  |
Loss contingency, claims settled and dismissed, claims | claim | 21 |  |  |  |
Legal and Administrative Proceedings |  |  |  |  |
Legal and Administrative Proceedings |  |  |  |  |
Loss contingency accrual | $ 24.1 |  |  |  | 24.0
Federal, State, and Provincial Enforcement Actions |  |  |  |  |
Legal and Administrative Proceedings |  |  |  |  |
Loss contingency accrual | $ 12.0 |  |  |  | $ 5.8
Number of proceedings | proceeding | 2 |  |  |  |
Ville Mercier |  |  |  |  |
Legal and Administrative Proceedings |  |  |  |  |
Number of permits issued by government, for dumping organic liquid | permit |  |  |  | 2 |
Number of neighboring municipalities filing separate legal proceedings against the Mercier subsidiary and the government of Quebec | municipality |  |  | 3 |  |
General damages sought |  | $ 2.9 |  |  |
Punitive damages sought |  | $ 10.0 |  |  |

X
- Definition -- None. No documentation exists for this element. -- + References No definition available. + Details
Name: | clh_LegalAndAdministrativeProceedingsAbstract
Namespace Prefix: | clh_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loss Contingency, General Damages Sought, Value + References No definition available. + Details
Name: | clh_LossContingencyGeneralDamagesSoughtValue
Namespace Prefix: | clh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Loss Contingency, Punitive Damages Sought, Value + References No definition available. + Details
Name: | clh_LossContingencyPunitiveDamagesSoughtValue
Namespace Prefix: | clh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition This element represents the number of municipalities other than Ville Mercier that filed legal proceedings against the Mercier Subsidiary. + References No definition available. + Details
Name: | clh_NumberOfNeighboringMunicipalitiesFilingSeparateLegalProceedings
Namespace Prefix: | clh_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of permits that are granted by the government in relation to environmental liabilities. + References No definition available. + Details
Name: | clh_NumberOfPermitsIssuedByGovernmentToDumpOrganicLiquid
Namespace Prefix: | clh_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of loss contingency liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349 + Details
Name: | us-gaap_LossContingencyAccrualAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The number of claims settled and dismissed during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349 + Details
Name: | us-gaap_LossContingencyClaimsSettledAndDismissedNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of pending claims pertaining to a loss contingency. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349 + Details
Name: | us-gaap_LossContingencyPendingClaimsNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_LitigationCaseAxis=clh_ProductLiabilityCasesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | clh_ContingenciesByNatureOfContingencyAxis=clh_LegalAndAdministrativeProceedingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | clh_ContingenciesByNatureOfContingencyAxis=clh_FederalAndStateEnforcementActionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | clh_ContingenciesByNatureOfContingencyAxis=clh_VilleMercierMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |