XML 52 R43.htm IDEA: XBRL DOCUMENT
v3.22.1

REVENUES - Additional Information (Details) | 3 Months Ended
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Mar. 31, 2022
Revenue from Contract with Customer [Abstract] |
Deferred contract cost, recognition period | 3 months

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- Definition Deferred Contract Cost, Recognition Period + References No definition available. + Details
Name: | clh_DeferredContractCostRecognitionPeriod
Namespace Prefix: | clh_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_RevenueFromContractWithCustomerAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration