XML 93 R80.htm IDEA: XBRL DOCUMENT
v3.22.4

CLOSURE AND POST-CLOSURE LIABILITIES - Changes in Post-Closure Liabilities (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) landfill_site | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) landfill_site
Changes to post-closure liabilities |  |  |
Balance at the beginning of the period | $ 99,103 | $ 87,926 |
Liabilities assumed in acquisitions | 55 | 1,446 |
Measurement period adjustments from prior period acquisitions | 1,148 |  |
New asset retirement obligations | 3,743 | 2,443 |
Accretion | 8,752 | 7,357 |
Changes in estimates recorded to consolidated statement of operations | 6,775 | 2,683 |
Changes in estimates recorded to consolidated balance sheet | 4,961 | 3,712 |
Expenditures | (5,151) | (6,602) |
Currency translation and other | (585) | 138 |
Balance at the end of the period | 118,801 | 99,103 | $ 87,926
Number of landfill sites closed during period | landfill_site |  |  | 2
Changes in estimates recorded to the consolidated statement of operations, related to facility closure | $ 600 | 2,300 |
Number of non-landfill site closure expected | landfill_site | 2 |  |
Landfill Retirement Liability |  |  |
Changes to post-closure liabilities |  |  |
Balance at the beginning of the period | $ 53,425 | 48,412 |
Liabilities assumed in acquisitions | 0 | 0 |
Measurement period adjustments from prior period acquisitions | 0 |  |
New asset retirement obligations | 3,743 | 2,443 |
Accretion | 4,605 | 3,655 |
Changes in estimates recorded to consolidated statement of operations | 1,063 | 2,287 |
Changes in estimates recorded to consolidated balance sheet | 3,219 | 2,297 |
Expenditures | (3,373) | (5,818) |
Currency translation and other | (431) | 149 |
Balance at the end of the period | 62,251 | 53,425 | $ 48,412
Non-Landfill Retirement Liability |  |  |
Changes to post-closure liabilities |  |  |
Balance at the beginning of the period | 45,678 | 39,514 |
Liabilities assumed in acquisitions | 55 | 1,446 |
Measurement period adjustments from prior period acquisitions | 1,148 |  |
New asset retirement obligations | 0 | 0 |
Accretion | 4,147 | 3,702 |
Changes in estimates recorded to consolidated statement of operations | 5,712 | 396 |
Changes in estimates recorded to consolidated balance sheet | 1,742 | 1,415 |
Expenditures | (1,778) | (784) |
Currency translation and other | (154) | (11) |
Balance at the end of the period | $ 56,550 | $ 45,678 | $ 39,514

X
- Definition Asset Retirement Obligation, Adjustment Related to Disposition of Business + References No definition available. + Details
Name: | clh_AssetRetirementObligationAdjustmentRelatedtoDispositionofBusiness
Namespace Prefix: | clh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the amount of change in the asset retirement obligation, during the current period for other changes in estimates recorded in the balance sheet. + References No definition available. + Details
Name: | clh_AssetRetirementObligationChangesRecordedInBalanceSheet
Namespace Prefix: | clh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of change in the asset retirement obligation, during the current period, for changes in estimates recorded in the statement of income. + References No definition available. + Details
Name: | clh_AssetRetirementObligationChangesRecordedInStatementOfIncome
Namespace Prefix: | clh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Asset Retirement Obligation, Changes Recorded In Statement Of Income, Related To Facility Closure + References No definition available. + Details
Name: | clh_AssetRetirementObligationChangesRecordedInStatementOfIncomeRelatedToFacilityClosure
Namespace Prefix: | clh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Asset Retirement Obligation, Liabilities Assumed in Acquisition + References No definition available. + Details
Name: | clh_AssetRetirementObligationLiabilitiesAssumedinAcquisition
Namespace Prefix: | clh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Asset Retirement Obligation, Measurement Period Adjustments From Prior Period Acquisitions + References No definition available. + Details
Name: | clh_AssetRetirementObligationMeasurementPeriodAdjustmentsFromPriorPeriodAcquisitions
Namespace Prefix: | clh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number Of Commercial Landfill Sites Closed During Period + References No definition available. + Details
Name: | clh_NumberOfCommercialLandfillSitesClosedDuringPeriod
Namespace Prefix: | clh_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Non-Landfill Site Closure Expected + References No definition available. + Details
Name: | clh_NumberOfNonLandfillSiteClosureExpected
Namespace Prefix: | clh_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 25 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=116646717&loc=d3e6290-110844 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
Name: | us-gaap_AssetRetirementObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of foreign currency translation gain (loss) which decreases (increases) asset retirement obligations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
Name: | us-gaap_AssetRetirementObligationForeignCurrencyTranslationGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of asset retirement obligations incurred during the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
Name: | us-gaap_AssetRetirementObligationLiabilitiesIncurred
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of asset retirement obligations settled, or otherwise disposed of, during the period. This may include asset retirement obligations transferred to third parties associated with the sale of a long-lived asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(2) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
Name: | us-gaap_AssetRetirementObligationLiabilitiesSettled
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | clh_ClosureAndPostClosureLiabilitiesAxis=clh_LandfillRetirementLiabilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | clh_ClosureAndPostClosureLiabilitiesAxis=clh_NonLandfillRetirementLiabilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |