XML 57 R46.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Legal Proceedings Gain Contingencies (Details) - Positive Outcome of Litigation - USD ($) $ in Millions | Sep. 10, 2018 | May 22, 2018
--- | --- | ---
Gain Contingencies [Line Items] |  |
Gain Contingency, Unrecorded Amount |  | $ 16.3
Sparta Fraud Claim Gain Contingency |  |
Gain Contingencies [Line Items] |  |
Gain Contingency, Unrecorded Amount | $ 6.3 | $ 4.7
Sparta Professional Negligence Claim Gain Contingency |  |
Gain Contingencies [Line Items] |  |
Gain Contingency, Unrecorded Amount | $ 9.1 |

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_GainContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount or range of possible amounts of gain that could be realized upon the resolution of a contingency. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6397426&loc=d3e17499-108355 + Details
Name: | us-gaap_GainContingencyUnrecordedAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_GainContingenciesByNatureAxis=us-gaap_PositiveOutcomeOfLitigationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cprt_SpartaLitigationAxis=cprt_SpartaFraudClaimGainContingencyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cprt_SpartaLitigationAxis=cprt_SpartaProfessionalNegligenceClaimGainContingencyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |