XML 227 R56.htm IDEA: XBRL DOCUMENT
v3.23.2

CLOSURE AND POST-CLOSURE LIABILITIES - Changes in Post-Closure Liabilities (Details) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2023 USD ($)
Changes to post-closure liabilities |
Beginning balance | $ 118,801
Liabilities assumed in acquisitions | 584
Measurement period adjustments from prior period acquisitions | 3,015
New asset retirement obligations | 1,348
Accretion | 4,737
Changes in estimates recorded to consolidated statement of operations | 135
Changes in estimates recorded to consolidated balance sheet | 1,271
Expenditures | (9,501)
Currency translation and other | 318
Ending balance | 120,708
Landfill Retirement Liability |
Changes to post-closure liabilities |
Beginning balance | 62,251
Liabilities assumed in acquisitions | 0
Measurement period adjustments from prior period acquisitions | 0
New asset retirement obligations | 1,348
Accretion | 2,555
Changes in estimates recorded to consolidated statement of operations | 0
Changes in estimates recorded to consolidated balance sheet | (260)
Expenditures | (5,408)
Currency translation and other | 169
Ending balance | 60,655
Non-Landfill Retirement Liability |
Changes to post-closure liabilities |
Beginning balance | 56,550
Liabilities assumed in acquisitions | 584
Measurement period adjustments from prior period acquisitions | 3,015
New asset retirement obligations | 0
Accretion | 2,182
Changes in estimates recorded to consolidated statement of operations | 135
Changes in estimates recorded to consolidated balance sheet | 1,531
Expenditures | (4,093)
Currency translation and other | 149
Ending balance | $ 60,053

X
- Definition Asset Retirement Obligation Changes Recorded in 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, 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 Asset Retirement Obligation, Payments + References No definition available. + Details
Name: | clh_AssetRetirementObligationPayments
Namespace Prefix: | clh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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 -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 25 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481999/410-20-25-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481850/410-20-50-1 + Details
Name: | us-gaap_AssetRetirementObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481879/410-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481850/410-20-50-1 + Details
Name: | us-gaap_AssetRetirementObligationAccretionExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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 -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481850/410-20-50-1 + 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 -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481850/410-20-50-1 + Details
Name: | us-gaap_AssetRetirementObligationLiabilitiesIncurred
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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: |