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| <link:definition> 9954489 - Disclosure - Other Commitments and Contingencies Other Commitments and Contingencies (Tables) </link:definition> |
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| <link:definition> 9954491 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail) </link:definition> |
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| <link:definition> 9954492 - Disclosure - Summary of Significant Accounting Policies - Average Depreciation Rates (Detail) </link:definition> |
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| <link:definition> 9954493 - Disclosure - Summary of Significant Accounting Policies - Estimated Useful Lives of Assets (Detail) </link:definition> |
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| <link:definition> 9954494 - Disclosure - Summary of Significant Accounting Policies Effects of New Accounting Pronouncements (Details) </link:definition> |
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| <link:definition> 9954495 - Disclosure - Earnings Per Share - Calculations of Basic and Diluted Earnings Per Share (Detail) </link:definition> |
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| | | <link:roleType id="AcquisitionsAdditionalInformationDetail" roleURI="http://www.chpk.com/role/AcquisitionsAdditionalInformationDetail"> |
| <link:definition> 9954496 - Disclosure - Acquisitions - Additional Information (Detail) </link:definition> |
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| <link:definition> 9954497 - Disclosure - Acquisitions - Summary of Purchase Price Allocation (Details) </link:definition> |
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| <link:definition> 9954499 - Disclosure - Revenue Recognition Contract Balances (Details) </link:definition> |
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| | | <link:roleType id="RevenueRecognitionDisaggregationofRevenueDetails" roleURI="http://www.chpk.com/role/RevenueRecognitionDisaggregationofRevenueDetails"> |
| <link:definition> 9954500 - Disclosure - Revenue Recognition Disaggregation of Revenue (Details) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| <link:definition> 9954501 - Disclosure - Revenue Recognition Remaining performance obligations (Details) </link:definition> |
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| <link:definition> 9954501 - Disclosure - Revenue Recognition Remaining performance obligations (Details) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="SegmentInformationScheduleofSegmentReportingInformationbySegmentDetail" roleURI="http://www.chpk.com/role/SegmentInformationScheduleofSegmentReportingInformationbySegmentDetail"> |
| <link:definition> 9954502 - Disclosure - Segment Information - Schedule of Segment Reporting Information by Segment (Detail) </link:definition> |
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| <link:definition> 9954512 - Disclosure - Fair Value of Financial Instruments - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) </link:definition> |
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| <link:definition> 9954513 - Disclosure - Fair Value of Financial Instruments Fair Value of Financial Instruments - Summary of Changes in Fair Value of Instruments (Details) </link:definition> |
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| <link:definition> 9954514 - Disclosure - Goodwill and Other Intangible Assets - Additional Information (Detail) </link:definition> |
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| <link:definition> 9954515 - Disclosure - Goodwill and Other Intangible Assets - Schedule of Carrying Value of Goodwill (Detail) </link:definition> |
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| | | <link:roleType id="StockholdersEquityAdditionalDetailsDetails" roleURI="http://www.chpk.com/role/StockholdersEquityAdditionalDetailsDetails"> |
| <link:definition> 9954536 - Disclosure - Stockholders' Equity Additional Details (Details) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="StockholdersEquityAccumulatedOthercomprehensiveIncomeLossChangesinAccumulatedOtherComprehensiveLossDetails" roleURI="http://www.chpk.com/role/StockholdersEquityAccumulatedOthercomprehensiveIncomeLossChangesinAccumulatedOtherComprehensiveLossDetails"> |
| <link:definition> 9954537 - Disclosure - Stockholders' Equity Accumulated Other comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Loss (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="StockholdersEquityAccumulatedOtherComprehensiveIncomelossReclassificationsofAccumulatedOtherComprehensiveLossDetails" roleURI="http://www.chpk.com/role/StockholdersEquityAccumulatedOtherComprehensiveIncomelossReclassificationsofAccumulatedOtherComprehensiveLossDetails"> |
| <link:definition> 9954538 - Disclosure - Stockholders' Equity Accumulated Other Comprehensive Income (loss) - Reclassifications of Accumulated Other Comprehensive Loss (Details) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="EmployeeBenefitPlansAdditionalInformationDetail" roleURI="http://www.chpk.com/role/EmployeeBenefitPlansAdditionalInformationDetail"> |
| <link:definition> 9954539 - Disclosure - Employee Benefit Plans - Additional Information (Detail) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="EmployeeBenefitPlansScheduleofFundedStatusofBenefitObligationandPlanAssetsDetail" roleURI="http://www.chpk.com/role/EmployeeBenefitPlansScheduleofFundedStatusofBenefitObligationandPlanAssetsDetail"> |
| <link:definition> 9954540 - Disclosure - Employee Benefit Plans - Schedule of Funded Status of Benefit Obligation and Plan Assets (Detail) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="EmployeeBenefitPlansScheduleofAmountsNotYetReflectedinNetPeriodicBenefitCostandIncludedinAccumulatedOtherComprehensiveIncomeLossorRegulatoryAssetsDetail" roleURI="http://www.chpk.com/role/EmployeeBenefitPlansScheduleofAmountsNotYetReflectedinNetPeriodicBenefitCostandIncludedinAccumulatedOtherComprehensiveIncomeLossorRegulatoryAssetsDetail"> |
| <link:definition> 9954541 - Disclosure - Employee Benefit Plans - Schedule of Amounts Not Yet Reflected in Net Periodic Benefit Cost and Included in Accumulated Other Comprehensive Income Loss or Regulatory Assets (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="EmployeeBenefitPlansScheduleofAmountsNotYetReflectedinNetPeriodicBenefitCostandIncludedinAccumulatedOtherComprehensiveIncomeLossorRegulatoryAssetsPhantomsDetail" roleURI="http://www.chpk.com/role/EmployeeBenefitPlansScheduleofAmountsNotYetReflectedinNetPeriodicBenefitCostandIncludedinAccumulatedOtherComprehensiveIncomeLossorRegulatoryAssetsPhantomsDetail"> |
| <link:definition> 9954542 - Disclosure - Employee Benefit Plans - Schedule of Amounts Not Yet Reflected in Net Periodic Benefit Cost and Included in Accumulated Other Comprehensive Income Loss or Regulatory Assets (Phantoms) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
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| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="EmployeeBenefitPlansScheduleofAssetsbyInvestmentTypeDetail" roleURI="http://www.chpk.com/role/EmployeeBenefitPlansScheduleofAssetsbyInvestmentTypeDetail"> |
| <link:definition> 9954543 - Disclosure - Employee Benefit Plans - Schedule of Assets by Investment Type (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="EmployeeBenefitPlansScheduleofAssetAllocationStrategyDetail" roleURI="http://www.chpk.com/role/EmployeeBenefitPlansScheduleofAssetAllocationStrategyDetail"> |
| <link:definition> 9954544 - Disclosure - Employee Benefit Plans - Schedule of Asset Allocation Strategy (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="EmployeeBenefitPlansSummaryofPensionPlanAssetsDetail" roleURI="http://www.chpk.com/role/EmployeeBenefitPlansSummaryofPensionPlanAssetsDetail"> |
| <link:definition> 9954545 - Disclosure - Employee Benefit Plans - Summary of Pension Plan Assets (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="EmployeeBenefitPlansSummaryofChangesinFairValueofLevel3InvestmentsDetail" roleURI="http://www.chpk.com/role/EmployeeBenefitPlansSummaryofChangesinFairValueofLevel3InvestmentsDetail"> |
| <link:definition> 9954546 - Disclosure - Employee Benefit Plans - Summary of Changes in Fair Value of Level 3 Investments (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="EmployeeBenefitPlansComponentofNetPeriodicPensionCostBenefitDetail" roleURI="http://www.chpk.com/role/EmployeeBenefitPlansComponentofNetPeriodicPensionCostBenefitDetail"> |
| <link:definition> 9954547 - Disclosure - Employee Benefit Plans - Component of Net Periodic Pension Cost (Benefit) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="EmployeeBenefitPlansAmountsinAccumulatedOtherComprehensiveIncomeLossandRegulatoryAssetDetail" roleURI="http://www.chpk.com/role/EmployeeBenefitPlansAmountsinAccumulatedOtherComprehensiveIncomeLossandRegulatoryAssetDetail"> |
| <link:definition> 9954548 - Disclosure - Employee Benefit Plans - Amounts in Accumulated Other Comprehensive Income/Loss and Regulatory Asset (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="EmployeeBenefitPlansScheduleofEstimatedFutureBenefitPaymentsDetail" roleURI="http://www.chpk.com/role/EmployeeBenefitPlansScheduleofEstimatedFutureBenefitPaymentsDetail"> |
| <link:definition> 9954549 - Disclosure - Employee Benefit Plans - Schedule of Estimated Future Benefit Payments (Detail) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="EmployeeBenefitPlansEmployeebenefitplansphantomsDetails" roleURI="http://www.chpk.com/role/EmployeeBenefitPlansEmployeebenefitplansphantomsDetails"> |
| <link:definition> 9954550 - Disclosure - Employee Benefit Plans Employee benefit plans phantoms (Details) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="ShareBasedCompensationAdditionalInformationDetail" roleURI="http://www.chpk.com/role/ShareBasedCompensationAdditionalInformationDetail"> |
| <link:definition> 9954551 - Disclosure - Share-Based Compensation - Additional Information (Detail) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="ShareBasedCompensationPlansShareBasedCompensationAmountsIncludedinNetIncomeDetail" roleURI="http://www.chpk.com/role/ShareBasedCompensationPlansShareBasedCompensationAmountsIncludedinNetIncomeDetail"> |
| <link:definition> 9954552 - Disclosure - Share-Based Compensation Plans - Share-Based Compensation Amounts Included in Net Income (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="ShareBasedCompensationPlansSummaryofStockActivityNonemployeedirectorsDetail" roleURI="http://www.chpk.com/role/ShareBasedCompensationPlansSummaryofStockActivityNonemployeedirectorsDetail"> |
| <link:definition> 9954553 - Disclosure - Share-Based Compensation Plans - Summary of Stock Activity Non-employee directors (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="ShareBasedCompensationPlansSummaryofStockActivityunderSICPKeyemployeesDetail" roleURI="http://www.chpk.com/role/ShareBasedCompensationPlansSummaryofStockActivityunderSICPKeyemployeesDetail"> |
| <link:definition> 9954554 - Disclosure - Share-Based Compensation Plans - Summary of Stock Activity under SICP - Key employees (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
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| | | <link:roleType id="ShareBasedCompensationPlansSharesWithheldandTaxBenefitsAssociatedWithShareBasedPaymentsDetails" roleURI="http://www.chpk.com/role/ShareBasedCompensationPlansSharesWithheldandTaxBenefitsAssociatedWithShareBasedPaymentsDetails"> |
| <link:definition> 9954555 - Disclosure - Share-Based Compensation Plans Shares Withheld and Tax Benefits Associated With Share-Based Payments (Details) </link:definition> |
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| | | <link:roleType id="RatesandOtherRegulatoryActivitiesAdditionalInformationDetail" roleURI="http://www.chpk.com/role/RatesandOtherRegulatoryActivitiesAdditionalInformationDetail"> |
| <link:definition> 9954556 - Disclosure - Rates and Other Regulatory Activities - Additional Information (Detail) </link:definition> |
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| | | <link:roleType id="RatesandOtherRegulatoryActivitiesRegulatoryAssetsandLiabilitiesDetails" roleURI="http://www.chpk.com/role/RatesandOtherRegulatoryActivitiesRegulatoryAssetsandLiabilitiesDetails"> |
| <link:definition> 9954557 - Disclosure - Rates and Other Regulatory Activities Regulatory Assets and Liabilities (Details) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="RatesandOtherRegulatoryActivitiesFederalTaxReformImpactforRegulatedBusinessesDetails" roleURI="http://www.chpk.com/role/RatesandOtherRegulatoryActivitiesFederalTaxReformImpactforRegulatedBusinessesDetails"> |
| <link:definition> 9954558 - Disclosure - Rates and Other Regulatory Activities Federal Tax Reform Impact for Regulated Businesses (Details) </link:definition> |
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| | | <link:roleType id="EnvironmentalCommitmentsandContingenciesAdditionalInformationDetail" roleURI="http://www.chpk.com/role/EnvironmentalCommitmentsandContingenciesAdditionalInformationDetail"> |
| <link:definition> 9954559 - Disclosure - Environmental Commitments and Contingencies - Additional Information (Detail) </link:definition> |
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| <link:definition> 9954560 - Disclosure - Other Commitments and Contingencies - Additional Information (Detail) </link:definition> |
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| <link:definition> 9954561 - Disclosure - Other Commitments and Contingencies Purchase Obligations (Details) </link:definition> |
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| <link:definition> 9954562 - Disclosure - Schedule II - Valuation and Qualifying Accounts (Detail) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| <xs:element id="cpk_EquipmentSecurityNoteMember" abstract="true" name="EquipmentSecurityNoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_PropertyPlantAndEquipmentAxis" abstract="true" name="PropertyPlantAndEquipmentAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_NumberOfUnsecuredBankCreditFacilities" abstract="false" name="NumberOfUnsecuredBankCreditFacilities" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/> |
| <xs:element id="cpk_AnnualDepreciationRatesTableTableTextBlock" abstract="false" name="AnnualDepreciationRatesTableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/> |
| <xs:element id="cpk_StandbyLettersOfCredit" abstract="false" name="StandbyLettersOfCredit" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_DisclosureShareBasedCompensationPlansShareBasedCompensationAmountsIncludedInNetIncomeAbstract" abstract="true" name="DisclosureShareBasedCompensationPlansShareBasedCompensationAmountsIncludedInNetIncomeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_LongtermDebtandCapitalLeaseObligationsNetofCurrentMaturities" abstract="false" name="LongtermDebtandCapitalLeaseObligationsNetofCurrentMaturities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_FloridaCityGasPurchasPriceAllocationTableTextBlock" abstract="false" name="FloridaCityGasPurchasPriceAllocationTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/> |
| <xs:element id="cpk_TonsOfPoultryLitter" abstract="false" name="TonsOfPoultryLitter" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/> |
| <xs:element id="cpk_DisclosureEmployeeBenefitPlansScheduleOfEstimatedFutureBenefitPaymentsAbstract" abstract="true" name="DisclosureEmployeeBenefitPlansScheduleOfEstimatedFutureBenefitPaymentsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_PropaneOperationsMember" abstract="true" name="PropaneOperationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DisclosureShareBasedCompensationPlansSummaryOfStockActivityNonemployeedirectorsAbstract" abstract="true" name="DisclosureShareBasedCompensationPlansSummaryOfStockActivityNonemployeedirectorsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_CommittedLineofCreditFacilityOneMember" abstract="true" name="CommittedLineofCreditFacilityOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DelmarvaMember" abstract="true" name="DelmarvaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_SummaryofEffectsofFederalTaxReformonRegulatedBusinessesAbstract" abstract="true" name="SummaryofEffectsofFederalTaxReformonRegulatedBusinessesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_FloridaPublicUtilitiesCompanyMember" abstract="true" name="FloridaPublicUtilitiesCompanyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_IntersegmentRevenuesAbstract" abstract="true" name="IntersegmentRevenuesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNoteDueMarch152042Member" abstract="true" name="UncollateralizedSeniorNoteDueMarch152042Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_BusinessAcquisitionPremiumPaid" abstract="false" name="BusinessAcquisitionPremiumPaid" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_DeferredIncomeTaxLiabilityStormReserve" abstract="false" name="DeferredIncomeTaxLiabilityStormReserve" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_OtherRegulatoryAssetMember" abstract="true" name="OtherRegulatoryAssetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DisclosureEmployeeBenefitPlansScheduleOfFundedStatusOfBenefitObligationAndPlanAssetsAbstract" abstract="true" name="DisclosureEmployeeBenefitPlansScheduleOfFundedStatusOfBenefitObligationAndPlanAssetsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_BeachsideExpansionMember" abstract="true" name="BeachsideExpansionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsRegulatoryAssetsNoncurrent" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsRegulatoryAssetsNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_RatesandOtherRegulatoryActivitiesLineItems" abstract="true" name="RatesandOtherRegulatoryActivitiesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_TermNoteDueJanuaryTwoThousandTwentyMember" abstract="true" name="TermNoteDueJanuaryTwoThousandTwentyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DisclosureFairValueOfFinancialInstrumentsFinancialAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisAbstract" abstract="true" name="DisclosureFairValueOfFinancialInstrumentsFinancialAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNoteDueMayTwoThousandThirtyEightMember" abstract="true" name="UncollateralizedSeniorNoteDueMayTwoThousandThirtyEightMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_FloridaCityGasMember" abstract="true" name="FloridaCityGasMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="cpk_ConstructionWorkInProgress" abstract="false" name="ConstructionWorkInProgress" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_DisclosureGoodwillAndOtherIntangibleAssetsScheduleOfCarryingValueAndAccumulatedAmortizationOfIntangibleAssetsAbstract" abstract="true" name="DisclosureGoodwillAndOtherIntangibleAssetsScheduleOfCarryingValueAndAccumulatedAmortizationOfIntangibleAssetsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_UnderrecoveredGRIPRevenueMember" abstract="true" name="UnderrecoveredGRIPRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_VariousMember" abstract="true" name="VariousMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DiscontinuedOperationGainLossonDisposalofDiscontinuedOperationNetofLossfromDiscontinuedOperationsNetofTax" abstract="false" name="DiscontinuedOperationGainLossonDisposalofDiscontinuedOperationNetofLossfromDiscontinuedOperationsNetofTax" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_RateCaseMember" abstract="true" name="RateCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_MetLifeMember" abstract="true" name="MetLifeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_LeasesCashFlowsAbstract" abstract="true" name="LeasesCashFlowsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_OperatingRevenuesUnaffiliatedCustomersAbstract" abstract="true" name="OperatingRevenuesUnaffiliatedCustomersAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_AccumulatedOtherComprehensiveIncomeLossTaxEffect" abstract="false" name="AccumulatedOtherComprehensiveIncomeLossTaxEffect" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_GuaranteeTypeDomain" abstract="true" name="GuaranteeTypeDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_StockIssuedValueDuringThePeriodSharesRetirementSavingsPlanAndDividendReinvestmentPlan" abstract="false" name="StockIssuedValueDuringThePeriodSharesRetirementSavingsPlanAndDividendReinvestmentPlan" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_UnrestrictedPayment" abstract="false" name="UnrestrictedPayment" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_AmountsSpenttoRestoreService" abstract="false" name="AmountsSpenttoRestoreService" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_UnregulatedEnergyPropertyPlantAndEquipment" abstract="false" name="UnregulatedEnergyPropertyPlantAndEquipment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_MobileCNGUtilityandPipelineSolutionsMember" abstract="true" name="MobileCNGUtilityandPipelineSolutionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_TotalOperatingandFinanceLeaseLiabilities" abstract="false" name="TotalOperatingandFinanceLeaseLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_PermanentRateRelief" abstract="false" name="PermanentRateRelief" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_NaturalgasprocessingequipmentMember" abstract="true" name="NaturalgasprocessingequipmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_MarylandNaturalGasDistributionBusinessesMember" abstract="true" name="MarylandNaturalGasDistributionBusinessesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="cpk_RegulatoryAssetsRelatedToEnvironmentalCosts" abstract="false" name="RegulatoryAssetsRelatedToEnvironmentalCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_IntangibleAssetsAmortizationPeriod" abstract="false" name="IntangibleAssetsAmortizationPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/> |
| <xs:element id="cpk_WestPalmBeachFloridaMember" abstract="true" name="WestPalmBeachFloridaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DefinedBenefitPlanFairValueofPlanAssetsExcludingNetAssetValueInvestments" abstract="false" name="DefinedBenefitPlanFairValueofPlanAssetsExcludingNetAssetValueInvestments" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_FortMeadeandIndiantownDivisionsMember" abstract="true" name="FortMeadeandIndiantownDivisionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_NYLUnsecuredDebtMember" abstract="true" name="NYLUnsecuredDebtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_SandpiperMember" abstract="true" name="SandpiperMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_NumberofPlans" abstract="false" name="NumberofPlans" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/> |
| <xs:element id="cpk_DelMarPathwayProjectMember" abstract="true" name="DelMarPathwayProjectMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_NonCashPerformanceIncentivePlanRetirement" abstract="false" name="NonCashPerformanceIncentivePlanRetirement" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_RequiredFixedChargeCoverageRatio" abstract="false" name="RequiredFixedChargeCoverageRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/> |
| <xs:element id="cpk_OverrecoveredGasAndFuelCostsMember" abstract="true" name="OverrecoveredGasAndFuelCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_MidAtlanticandFloridaMember" abstract="true" name="MidAtlanticandFloridaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_FloridaPublicUtilitiesCompanyMedicalPlanMember" abstract="true" name="FloridaPublicUtilitiesCompanyMedicalPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_BouldenMember" abstract="true" name="BouldenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_CommonStockSharesIssuedAtTheMarket" abstract="false" name="CommonStockSharesIssuedAtTheMarket" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/> |
| <xs:element id="cpk_DivisionorBusinessUnitAxis" abstract="true" name="DivisionorBusinessUnitAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_InterestRateSwapRateHighRangeMember" abstract="true" name="InterestRateSwapRateHighRangeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_RegulatoryLiabilitiesRelatedtotheFederalTaxReformImpactLineItems" abstract="true" name="RegulatoryLiabilitiesRelatedtotheFederalTaxReformImpactLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_LeaseCashFlowTableTextBlock" abstract="false" name="LeaseCashFlowTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/> |
| <xs:element id="cpk_FirstMortgageBondDueOnTwoThousandTwentyTwoMember" abstract="true" name="FirstMortgageBondDueOnTwoThousandTwentyTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_Firmnaturalgastransportationdeliverability" abstract="false" name="Firmnaturalgastransportationdeliverability" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/> |
| <xs:element id="cpk_DisclosureSupplementalCashFlowDisclosuresCashPaidForInterestAndIncomeTaxesAbstract" abstract="true" name="DisclosureSupplementalCashFlowDisclosuresCashPaidForInterestAndIncomeTaxesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_RatesandOtherRegulatoryActivitiesTable" abstract="true" name="RatesandOtherRegulatoryActivitiesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_RabbiTrustAssociatedWithDeferredCompensationMember" abstract="true" name="RabbiTrustAssociatedWithDeferredCompensationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_OtherMember" abstract="true" name="OtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_CommittedLineofCreditFacilityThreeMember" abstract="true" name="CommittedLineofCreditFacilityThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DebtServiceCoverageRatio" abstract="false" name="DebtServiceCoverageRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/> |
| <xs:element id="cpk_NetOperatingLossesAndTaxCarryforwardsRecovered" abstract="false" name="NetOperatingLossesAndTaxCarryforwardsRecovered" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_DisclosureEmployeeBenefitPlansScheduleOfAssetAllocationStrategyAbstract" abstract="true" name="DisclosureEmployeeBenefitPlansScheduleOfAssetAllocationStrategyAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_OtherUnregulatedEnergyMember" abstract="true" name="OtherUnregulatedEnergyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DelmarvaandFloridaMember" abstract="true" name="DelmarvaandFloridaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_ProceedsFromIssuanceOfCommonStockAtTheMarket" abstract="false" name="ProceedsFromIssuanceOfCommonStockAtTheMarket" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNoteDueOnMay2TwoThousandTwentyEightMember" abstract="true" name="UncollateralizedSeniorNoteDueOnMay2TwoThousandTwentyEightMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantificationPrincipleEffectOfAdoptionQuantification" abstract="false" name="NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantificationPrincipleEffectOfAdoptionQuantification" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_EightFlagsMember" abstract="true" name="EightFlagsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_AggregatedUnfundedCommitmentsMember" abstract="true" name="AggregatedUnfundedCommitmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_SwapSalesMember" abstract="true" name="SwapSalesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNoteTwoDueonDecemberTwoThousandTwentyEightMember" abstract="true" name="UncollateralizedSeniorNoteTwoDueonDecemberTwoThousandTwentyEightMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_EnergyTransmissionMember" abstract="true" name="EnergyTransmissionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DisclosureFairValueOfFinancialInstrumentsAdditionalInformationAbstract" abstract="true" name="DisclosureFairValueOfFinancialInstrumentsAdditionalInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_DiameterAxis" abstract="true" name="DiameterAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_DeferredIncomeTaxOnAcquisitionAdjustment" abstract="false" name="DeferredIncomeTaxOnAcquisitionAdjustment" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNoteDueNovemberTwoThousandThirtyFourMember" abstract="true" name="UncollateralizedSeniorNoteDueNovemberTwoThousandThirtyFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_COVID19RegulatoryAsset" abstract="false" name="COVID19RegulatoryAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_OverRecoveredGRIPRevenueMember" abstract="true" name="OverRecoveredGRIPRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="cpk_IncomeTaxReformAbstract" abstract="true" name="IncomeTaxReformAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_NewberryExpansionMember" abstract="true" name="NewberryExpansionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="cpk_DeferredTaxAssetsOperatingLossCarryforwardsTotal" abstract="false" name="DeferredTaxAssetsOperatingLossCarryforwardsTotal" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_BusinessCombinationWorkingCapital" abstract="false" name="BusinessCombinationWorkingCapital" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_DefinedBenefitPlanAccruedPensionCostsAccruedExpensesEmploymentBenefits" abstract="false" name="DefinedBenefitPlanAccruedPensionCostsAccruedExpensesEmploymentBenefits" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_StormReserveMember" abstract="true" name="StormReserveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNoteOneDueOnTwoThousandSeventeenMember" abstract="true" name="UncollateralizedSeniorNoteOneDueOnTwoThousandSeventeenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_NaturalGasSwapsMember" abstract="true" name="NaturalGasSwapsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNoteDueOnTwoThousandTwentySixMember" abstract="true" name="UncollateralizedSeniorNoteDueOnTwoThousandTwentySixMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_HighYieldAssetBackedSecuritiesMember" abstract="true" name="HighYieldAssetBackedSecuritiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_FixedSwapRate" abstract="false" name="FixedSwapRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/> |
| <xs:element id="cpk_NewYorkLifeMember" abstract="true" name="NewYorkLifeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_UnrealizedGainLossOnCashFlowHedgingInstrumentsTax" abstract="false" name="UnrealizedGainLossOnCashFlowHedgingInstrumentsTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_MarylandNaturalGasMember" abstract="true" name="MarylandNaturalGasMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DeferredCompensationEmployerMatchingContributionRate" abstract="false" name="DeferredCompensationEmployerMatchingContributionRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/> |
| <xs:element id="cpk_NumberofMonthstoEstablishROUAssetandLiability" abstract="false" name="NumberofMonthstoEstablishROUAssetandLiability" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/> |
| <xs:element id="cpk_FloridaPublicUtilitiesCompanyPensionPlanMember" abstract="true" name="FloridaPublicUtilitiesCompanyPensionPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_AlternativeInvestmentMember" abstract="true" name="AlternativeInvestmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_MarkToMarketEnergyAssetsMember" abstract="true" name="MarkToMarketEnergyAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_AwardstononemployeedirectorMember" abstract="true" name="AwardstononemployeedirectorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DisclosureIncomeTaxesScheduleOfAccumulatedDeferredIncomeTaxAssetsAndLiabilitiesAbstract" abstract="true" name="DisclosureIncomeTaxesScheduleOfAccumulatedDeferredIncomeTaxAssetsAndLiabilitiesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_RegulatoryLiabilitiesRelatedtotheFederalTaxReformImpactTable" abstract="true" name="RegulatoryLiabilitiesRelatedtotheFederalTaxReformImpactTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_DeferredConversionAndDevelopmentCostsMember" abstract="true" name="DeferredConversionAndDevelopmentCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNoteDueDecember2026Member" abstract="true" name="UncollateralizedSeniorNoteDueDecember2026Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="cpk_EnvironmentalCommitmentsAndContingenciesLineItems" abstract="true" name="EnvironmentalCommitmentsAndContingenciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_DisclosureEmployeeBenefitPlansAdditionalInformationAbstract" abstract="true" name="DisclosureEmployeeBenefitPlansAdditionalInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_NetOperatingLossesAndTaxCarrybackTotal" abstract="false" name="NetOperatingLossesAndTaxCarrybackTotal" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_TotalBaseRateIncrease" abstract="false" name="TotalBaseRateIncrease" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_MarlinGasServicesMember" abstract="true" name="MarlinGasServicesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_NaturalgaspipelinesMember" abstract="true" name="NaturalgaspipelinesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_EnergyServicesMember" abstract="true" name="EnergyServicesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DeferredChargesAndOtherAssets" abstract="false" name="DeferredChargesAndOtherAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_InterestRateCreditAdjustment" abstract="false" name="InterestRateCreditAdjustment" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/> |
| <xs:element id="cpk_ComponentsOfIncomeTaxExpenseBenefitLineItems" abstract="true" name="ComponentsOfIncomeTaxExpenseBenefitLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_CommittedLineofCreditFacilityTwoMember" abstract="true" name="CommittedLineofCreditFacilityTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_RegulatedEnergyMember" abstract="true" name="RegulatedEnergyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_IncrementalRevenueStormCostRecovery" abstract="false" name="IncrementalRevenueStormCostRecovery" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_UnitedStatesEquitySmallCapMember" abstract="true" name="UnitedStatesEquitySmallCapMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_CentralFloridaGasDivisionMember" abstract="true" name="CentralFloridaGasDivisionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_RegulatoryLiabilityAmortizationPeriodRevised" abstract="false" name="RegulatoryLiabilityAmortizationPeriodRevised" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/> |
| <xs:element id="cpk_WesternNaturalGasMember" abstract="true" name="WesternNaturalGasMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_NumberofMainlinePipelineMiles" abstract="false" name="NumberofMainlinePipelineMiles" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:lengthItemType"/> |
| <xs:element id="cpk_MinimumInterestCoverageRatioUnderAgreementTwo" abstract="false" name="MinimumInterestCoverageRatioUnderAgreementTwo" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/> |
| <xs:element id="cpk_OtherPropertyPlantAndEquipmentMember" abstract="true" name="OtherPropertyPlantAndEquipmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_RetirementMedicalBenefitsPlansMember" abstract="true" name="RetirementMedicalBenefitsPlansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_OwnershipInterest" abstract="false" name="OwnershipInterest" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/> |
| <xs:element id="cpk_PaymentsForEnvironmentalExpenditures" abstract="false" name="PaymentsForEnvironmentalExpenditures" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_SharesHeldInTrustForDeferredCompensationPlan" abstract="false" name="SharesHeldInTrustForDeferredCompensationPlan" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/> |
| <xs:element id="cpk_DisclosureRatesAndOtherRegulatoryActivitiesAdditionalInformationAbstract" abstract="true" name="DisclosureRatesAndOtherRegulatoryActivitiesAdditionalInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_UsMidCapEquitySecuritiesMember" abstract="true" name="UsMidCapEquitySecuritiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_SpecificPurposeMember" abstract="true" name="SpecificPurposeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_OtherRegulatoryLiabilityMember" abstract="true" name="OtherRegulatoryLiabilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_PrudentialMember" abstract="true" name="PrudentialMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_TermNoteDueFebruaryTwoThousandTwentyMember" abstract="true" name="TermNoteDueFebruaryTwoThousandTwentyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_InterimRates" abstract="false" name="InterimRates" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_NumberofSubPlans" abstract="false" name="NumberofSubPlans" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/> |
| <xs:element id="cpk_AggregateShelfAgreementsMember" abstract="true" name="AggregateShelfAgreementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_CHPPlantMember" abstract="true" name="CHPPlantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNoteDueJanuaryTwoThousandThirtySevenMember" abstract="true" name="UncollateralizedSeniorNoteDueJanuaryTwoThousandThirtySevenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DeferredChargesAndOtherAssetsAbstract" abstract="true" name="DeferredChargesAndOtherAssetsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_J.T.LeeAndSonsMember" abstract="true" name="J.T.LeeAndSonsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="cpk_TCJAImpactDomain" abstract="true" name="TCJAImpactDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_TotalforSegmentsMember" abstract="true" name="TotalforSegmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DelayofRevenueRecognitionDueToImplementationofNewStandard" abstract="false" name="DelayofRevenueRecognitionDueToImplementationofNewStandard" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/> |
| <xs:element id="cpk_EnvironmentalRegulatoryAssetsAndExpendituresMember" abstract="true" name="EnvironmentalRegulatoryAssetsAndExpendituresMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DeferredIncomeTaxLiabilityNaturalGasConversionCosts" abstract="false" name="DeferredIncomeTaxLiabilityNaturalGasConversionCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRegulatoryAssetsCurrent" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRegulatoryAssetsCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_AcceleratedVestedSharesMember" abstract="true" name="AcceleratedVestedSharesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DavenportEnergyMember" abstract="true" name="DavenportEnergyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_MarylandNaturalGasDistributionBusinessesDomain" abstract="true" name="MarylandNaturalGasDistributionBusinessesDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="cpk_DeferralsRatesAfterDeferralPeriodEndsMinimum" abstract="false" name="DeferralsRatesAfterDeferralPeriodEndsMinimum" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/> |
| <xs:element id="cpk_DeferredPostRetirementBenefitsMember" abstract="true" name="DeferredPostRetirementBenefitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_GuaranteedIncomeFundMember" abstract="true" name="GuaranteedIncomeFundMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_SelfInsuredLiabilitiesMember" abstract="true" name="SelfInsuredLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_PeninsulaPipelineMember" abstract="true" name="PeninsulaPipelineMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_PropaneSwapAgreementMember" abstract="true" name="PropaneSwapAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DisclosureEmployeeBenefitPlansScheduleOfAmountsNotYetReflectedInNetPeriodicBenefitCostAndIncludedInAccumulatedOtherComprehensiveIncomeLossOrRegulatoryAssetsAbstract" abstract="true" name="DisclosureEmployeeBenefitPlansScheduleOfAmountsNotYetReflectedInNetPeriodicBenefitCostAndIncludedInAccumulatedOtherComprehensiveIncomeLossOrRegulatoryAssetsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_EmployeeDeferralRate" abstract="false" name="EmployeeDeferralRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/> |
| <xs:element id="cpk_DisclosureEmployeeBenefitPlansComponentOfNetPeriodicPensionCostBenefitAbstract" abstract="true" name="DisclosureEmployeeBenefitPlansComponentOfNetPeriodicPensionCostBenefitAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNoteDueDecemberTwoThousandThirtyFourMember" abstract="true" name="UncollateralizedSeniorNoteDueDecemberTwoThousandThirtyFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DivisionOrBusinessUnit1Domain" abstract="true" name="DivisionOrBusinessUnit1Domain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DisclosureEarningsPerShareCalculationsOfBasicAndDilutedEarningsPerShareAbstract" abstract="true" name="DisclosureEarningsPerShareCalculationsOfBasicAndDilutedEarningsPerShareAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_PlanetFoundMember" abstract="true" name="PlanetFoundMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeLossafterTaxRollForward" abstract="true" name="DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeLossafterTaxRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_AmortizationOfPreMergerRegulatoryAsset" abstract="false" name="AmortizationOfPreMergerRegulatoryAsset" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_NumberOfMilesOfDistributionMains" abstract="false" name="NumberOfMilesOfDistributionMains" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNoteDueMarch142038Abstract" abstract="true" name="UncollateralizedSeniorNoteDueMarch142038Abstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_ScheduleOfSegmentReportingInformationBySegmentTableTextBlock" abstract="false" name="ScheduleOfSegmentReportingInformationBySegmentTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/> |
| <xs:element id="cpk_RestrictedPayment" abstract="false" name="RestrictedPayment" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_LiquefiedPetroleumGasEquipmentMember" abstract="true" name="LiquefiedPetroleumGasEquipmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_PeriodForAmortizationOfShareBasedExpenses" abstract="false" name="PeriodForAmortizationOfShareBasedExpenses" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/> |
| <xs:element id="cpk_AccumulatedGainLossfromCommodityContractsCashFlowsHedgesMember" abstract="true" name="AccumulatedGainLossfromCommodityContractsCashFlowsHedgesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DefinedBenefitPlanReconciliationOfFundedStatusAbstract" abstract="true" name="DefinedBenefitPlanReconciliationOfFundedStatusAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_COVID19DeferredCostsMember" abstract="true" name="COVID19DeferredCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_ElectricLimitedProceedingsMember" abstract="true" name="ElectricLimitedProceedingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_OtherComprehensiveIncomeLossUnrealizedGainLossOnInterestRateSwapsDuringPeriodTax" abstract="false" name="OtherComprehensiveIncomeLossUnrealizedGainLossOnInterestRateSwapsDuringPeriodTax" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_EstimatedUsefulLifeOfAssetsTableTableTextBlock" abstract="false" name="EstimatedUsefulLifeOfAssetsTableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/> |
| <xs:element id="cpk_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpiredInPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpiredInPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/> |
| <xs:element id="cpk_CostRecoveryStormProtectionPlan" abstract="false" name="CostRecoveryStormProtectionPlan" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_NonCashPerformanceIncentivePlanExpenses" abstract="false" name="NonCashPerformanceIncentivePlanExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_MeasuringAndRegulatingStationEquipmentMember" abstract="true" name="MeasuringAndRegulatingStationEquipmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_ComponentsOfIncomeTaxExpenseBenefitTable" abstract="true" name="ComponentsOfIncomeTaxExpenseBenefitTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_SummaryOfAccountingPoliciesLineItems" abstract="true" name="SummaryOfAccountingPoliciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_Numberofcustomers" abstract="false" name="Numberofcustomers" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/> |
| <xs:element id="cpk_DisclosureScheduleiiValuationAndQualifyingAccountsAbstract" abstract="true" name="DisclosureScheduleiiValuationAndQualifyingAccountsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_DiversifiedInstrumentsMember" abstract="true" name="DiversifiedInstrumentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DisclosureEmployeeBenefitPlansScheduleOfAssetsByInvestmentTypeAbstract" abstract="true" name="DisclosureEmployeeBenefitPlansScheduleOfAssetsByInvestmentTypeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_EastCoastReinforcementProjectsBoyntonBeachMember" abstract="true" name="EastCoastReinforcementProjectsBoyntonBeachMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="cpk_StockIssuedDuringThePeriodValueRetirementSavingsPlanAndDividendReinvestmentPlan" abstract="false" name="StockIssuedDuringThePeriodValueRetirementSavingsPlanAndDividendReinvestmentPlan" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_MarylandDivisionMember" abstract="true" name="MarylandDivisionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_Operations" abstract="false" name="Operations" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_GallonsAcquiredThroughAcquisition" abstract="false" name="GallonsAcquiredThroughAcquisition" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/> |
| <xs:element id="cpk_DisclosureGoodwillAndOtherIntangibleAssetsScheduleOfCarryingValueOfGoodwillAbstract" abstract="true" name="DisclosureGoodwillAndOtherIntangibleAssetsScheduleOfCarryingValueOfGoodwillAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_EnergyMarketingContractLiabilitiesTotal" abstract="false" name="EnergyMarketingContractLiabilitiesTotal" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_AwardstononemployeedirectorsMember" abstract="true" name="AwardstononemployeedirectorsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_ReceivablesAndOtherDeferredCharges" abstract="false" name="ReceivablesAndOtherDeferredCharges" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_DisclosureShareBasedCompensationAdditionalInformationAbstract" abstract="true" name="DisclosureShareBasedCompensationAdditionalInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_AssetAllocationRangeTableTableTextBlock" abstract="false" name="AssetAllocationRangeTableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/> |
| <xs:element id="cpk_DelawarenaturalgasdivisionMember" abstract="true" name="DelawarenaturalgasdivisionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_BaseRateIncreaseBaseSAFEInvestmentsTransferToBaseRates" abstract="false" name="BaseRateIncreaseBaseSAFEInvestmentsTransferToBaseRates" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_PropertyPlantAndEquipmentDomain" abstract="true" name="PropertyPlantAndEquipmentDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_NaturalGasTransmissionMember" abstract="true" name="NaturalGasTransmissionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DisclosureGoodwillAndOtherIntangibleAssetsAdditionalInformationAbstract" abstract="true" name="DisclosureGoodwillAndOtherIntangibleAssetsAdditionalInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNoteDueNovemberTwoThousandThirtyNineMember" abstract="true" name="UncollateralizedSeniorNoteDueNovemberTwoThousandThirtyNineMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNoteDueAugustTwoThousandThirtyFiveMember" abstract="true" name="UncollateralizedSeniorNoteDueAugustTwoThousandThirtyFiveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DisclosureDerivativeInstrumentsEffectsOfGainsAndLossesFromDerivativeInstrumentsAbstract" abstract="true" name="DisclosureDerivativeInstrumentsEffectsOfGainsAndLossesFromDerivativeInstrumentsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_DisclosureLongTermDebtOutstandingLongTermDebtAbstract" abstract="true" name="DisclosureLongTermDebtOutstandingLongTermDebtAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_DeferredPensionSettlementExpense" abstract="false" name="DeferredPensionSettlementExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_CumulativeConsolidatedNetIncome" abstract="false" name="CumulativeConsolidatedNetIncome" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_DeferredTaxAssetsEnvironmental" abstract="false" name="DeferredTaxAssetsEnvironmental" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_AccruedRevenue" abstract="false" name="AccruedRevenue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_OperationsAndMaintenanceExpensePolicyTextBlock" abstract="false" name="OperationsAndMaintenanceExpensePolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/> |
| <xs:element id="cpk_CommittedLineofCreditFacilityFourMember" abstract="true" name="CommittedLineofCreditFacilityFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DisclosureShareBasedCompensationPlansSummaryofStockActivityunderSICPKeyemployeesAbstract" abstract="true" name="DisclosureShareBasedCompensationPlansSummaryofStockActivityunderSICPKeyemployeesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_LongTermDebtTotal" abstract="false" name="LongTermDebtTotal" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_NaturalGasOperationsMember" abstract="true" name="NaturalGasOperationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTaxIncremental" abstract="false" name="DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTaxIncremental" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_PermanentRates" abstract="false" name="PermanentRates" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_PropaneDeliveryMember" abstract="true" name="PropaneDeliveryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DisclosureSupplementalCashFlowDisclosuresNoncashInvestingAndFinancingActivitiesAbstract" abstract="true" name="DisclosureSupplementalCashFlowDisclosuresNoncashInvestingAndFinancingActivitiesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_LineOfCreditFacilityInterestRateDescription1" abstract="false" name="LineOfCreditFacilityInterestRateDescription1" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_NetPeriodicCostBenefit" abstract="false" name="NetPeriodicCostBenefit" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_AOCIChangesForDefinedBenefitPensionAndPostretirementPlansMember" abstract="true" name="AOCIChangesForDefinedBenefitPensionAndPostretirementPlansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DomesticEquitiesMember" abstract="true" name="DomesticEquitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_MaturityPeriodToBeConsideredCashEquivalents" abstract="false" name="MaturityPeriodToBeConsideredCashEquivalents" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/> |
| <xs:element id="cpk_DefinedBenefitPlanPercentageOfPlanAssetsByInvestmentType" abstract="false" name="DefinedBenefitPlanPercentageOfPlanAssetsByInvestmentType" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/> |
| <xs:element id="cpk_NewAccountingPronouncementOfChangeInAccountingPrincipleEffectOfAdoption" abstract="false" name="NewAccountingPronouncementOfChangeInAccountingPrincipleEffectOfAdoption" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_DisclosureEmployeeBenefitPlansSummaryOfChangesInFairValueOfLevel3InvestmentsAbstract" abstract="true" name="DisclosureEmployeeBenefitPlansSummaryOfChangesInFairValueOfLevel3InvestmentsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_DeferredStormCostsMember" abstract="true" name="DeferredStormCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_IndiantownGasCompanyMember" abstract="true" name="IndiantownGasCompanyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_ProceedsFromDivestitureOfBusinessesIncremental" abstract="false" name="ProceedsFromDivestitureOfBusinessesIncremental" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_SharesIssuedPricePerShareAtTheMarket" abstract="false" name="SharesIssuedPricePerShareAtTheMarket" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/> |
| <xs:element id="cpk_CompanysExposureInNumberOfFormerManufacturedGasPlantSites" abstract="false" name="CompanysExposureInNumberOfFormerManufacturedGasPlantSites" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/> |
| <xs:element id="cpk_DiameterDomain" abstract="true" name="DiameterDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_CostRecoveryCapital" abstract="false" name="CostRecoveryCapital" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_DiscontinuedOperationsSupplementalCashFlowsScheduleTableTextBlock" abstract="false" name="DiscontinuedOperationsSupplementalCashFlowsScheduleTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/> |
| <xs:element id="cpk_CorporateAndEliminationsMember" abstract="true" name="CorporateAndEliminationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNoteDueJulyTwoThousandThirtyFiveMember" abstract="true" name="UncollateralizedSeniorNoteDueJulyTwoThousandThirtyFiveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_RevolvingLineOfCreditShortTermMember" abstract="true" name="RevolvingLineOfCreditShortTermMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_StructuresAndImprovementsMember" abstract="true" name="StructuresAndImprovementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DisclosureDerivativeInstrumentsAdditionalInformationAbstract" abstract="true" name="DisclosureDerivativeInstrumentsAdditionalInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_BaseRateIncreaseLiquefiedNaturalGasFacility" abstract="false" name="BaseRateIncreaseLiquefiedNaturalGasFacility" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNoteDueDecember2033Member" abstract="true" name="UncollateralizedSeniorNoteDueDecember2033Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="cpk_AggregateInvestmentMaximum" abstract="false" name="AggregateInvestmentMaximum" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_DefinedBenefitPlanExpectedFutureBenefitPaymentsMaturityTable" abstract="true" name="DefinedBenefitPlanExpectedFutureBenefitPaymentsMaturityTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_UsLargeCapEquitySecuritiesMember" abstract="true" name="UsLargeCapEquitySecuritiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_LakeWalesPipelineAcquisitionMember" abstract="true" name="LakeWalesPipelineAcquisitionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DisclosureOtherCommitmentsAndContingenciesAdditionalInformationAbstract" abstract="true" name="DisclosureOtherCommitmentsAndContingenciesAdditionalInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_BaseRateIncrease" abstract="false" name="BaseRateIncrease" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_Ratiobasedonaveragenumberofpriorquarters" abstract="false" name="Ratiobasedonaveragenumberofpriorquarters" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/> |
| <xs:element id="cpk_ManufacturedGasPlantMember" abstract="true" name="ManufacturedGasPlantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_NotePurchaseAgreementMember" abstract="true" name="NotePurchaseAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_MaximumDebtToNetCapitalRatioUnderAgreementTwo" abstract="false" name="MaximumDebtToNetCapitalRatioUnderAgreementTwo" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/> |
| <xs:element id="cpk_DisclosureEmployeeBenefitPlansSummaryOfPensionPlanAssetsAbstract" abstract="true" name="DisclosureEmployeeBenefitPlansSummaryOfPensionPlanAssetsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_ReconciliationOfDenominatorAbstract" abstract="true" name="ReconciliationOfDenominatorAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_MaximumDaysToMakeDefaultGood" abstract="false" name="MaximumDaysToMakeDefaultGood" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/> |
| <xs:element id="cpk_WinterHavenExpansionMember" abstract="true" name="WinterHavenExpansionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_FloridaNaturalGasDistributionMember" abstract="true" name="FloridaNaturalGasDistributionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_EnergyMarketingContractsAssetsTotal" abstract="false" name="EnergyMarketingContractsAssetsTotal" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_DebtInstrumentRestrictiveCovenantsRequiredNetBookValueofRegulatedBusinessAssetsPercentageofConsolidatedTotalAssets" abstract="false" name="DebtInstrumentRestrictiveCovenantsRequiredNetBookValueofRegulatedBusinessAssetsPercentageofConsolidatedTotalAssets" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/> |
| <xs:element id="cpk_TwinLakesExpansionMember" abstract="true" name="TwinLakesExpansionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DisclosureDerivativeInstrumentsFairValuesOfDerivativeContractsRecordedInConsolidatedBalanceSheetsAbstract" abstract="true" name="DisclosureDerivativeInstrumentsFairValuesOfDerivativeContractsRecordedInConsolidatedBalanceSheetsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_DeferredCostsMember" abstract="true" name="DeferredCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_NetOperatingLossCarryforwardsMember" abstract="true" name="NetOperatingLossCarryforwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNoteDueDecember2038Member" abstract="true" name="UncollateralizedSeniorNoteDueDecember2038Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="cpk_LongtermDebtDebtCovenantsMaximumAllowableAmountofRestrictedPayments" abstract="false" name="LongtermDebtDebtCovenantsMaximumAllowableAmountofRestrictedPayments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_ExtentofCustomersLosingService" abstract="false" name="ExtentofCustomersLosingService" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/> |
| <xs:element id="cpk_UnderrecoveredGasAndFuelCostsMember" abstract="true" name="UnderrecoveredGasAndFuelCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_BulkPlantStorageAcquiredThroughAcquisition" abstract="false" name="BulkPlantStorageAcquiredThroughAcquisition" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/> |
| <xs:element id="cpk_Covid19EffectsTextBlock" abstract="false" name="Covid19EffectsTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/> |
| <xs:element id="cpk_SharesIssuedUnderPerformanceIncentivePlanWithheldForEmployeeTaxes" abstract="false" name="SharesIssuedUnderPerformanceIncentivePlanWithheldForEmployeeTaxes" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/> |
| <xs:element id="cpk_MetersAndMeterInstallationsMember" abstract="true" name="MetersAndMeterInstallationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_AnnualRateCaseRecovery" abstract="false" name="AnnualRateCaseRecovery" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNoteDueDecember2030Member" abstract="true" name="UncollateralizedSeniorNoteDueDecember2030Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="cpk_DeferredTaxLiabilitiesLossOnReacquiredDebt" abstract="false" name="DeferredTaxLiabilitiesLossOnReacquiredDebt" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_SurchargeStormCostRecovery" abstract="false" name="SurchargeStormCostRecovery" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_ChesapeakePensionSerpMember" abstract="true" name="ChesapeakePensionSerpMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNoteDueMarch142038Member" abstract="true" name="UncollateralizedSeniorNoteDueMarch142038Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_PESCOMember" abstract="true" name="PESCOMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DefinedBenefitPlanExpectedFutureBenefitPaymentsMaturityLineItems" abstract="true" name="DefinedBenefitPlanExpectedFutureBenefitPaymentsMaturityLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_AcquisitionresultsTableTextBlock" abstract="false" name="AcquisitionresultsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/> |
| <xs:element id="cpk_RevolvingLineOfCreditLongTermMember" abstract="true" name="RevolvingLineOfCreditLongTermMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DelmarvaPeninsulaPennsylvaniaandFloridaMember" abstract="true" name="DelmarvaPeninsulaPennsylvaniaandFloridaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_RegulatoryAssetStormCostRecovery" abstract="false" name="RegulatoryAssetStormCostRecovery" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_ProceedsFromPaymentForIssuanceOfCommonStockDividendReinvestmentPlan" abstract="false" name="ProceedsFromPaymentForIssuanceOfCommonStockDividendReinvestmentPlan" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_NumberofYearsforAssetManagementAgreement" abstract="false" name="NumberofYearsforAssetManagementAgreement" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/> |
| <xs:element id="cpk_TreasuryStockActivityAndDeferredCompensationPlanActivityDuringPeriodValue" abstract="false" name="TreasuryStockActivityAndDeferredCompensationPlanActivityDuringPeriodValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_TCJAImpactAxis" abstract="true" name="TCJAImpactAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNoteDueNovemberTwoThousandThirtyEightMember" abstract="true" name="UncollateralizedSeniorNoteDueNovemberTwoThousandThirtyEightMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_AcquisitionsFloridaCityGasProFormaTableTextBlock" abstract="false" name="AcquisitionsFloridaCityGasProFormaTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/> |
| <xs:element id="cpk_AdditionalFirmNaturalGasTransportationDeliverability" abstract="false" name="AdditionalFirmNaturalGasTransportationDeliverability" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/> |
| <xs:element id="cpk_JointlyOwnedPipelineMember" abstract="true" name="JointlyOwnedPipelineMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_NaturalGasFuturesMember" abstract="true" name="NaturalGasFuturesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_AccountsReceivableAllowanceForCreditLossesCurrentDisclosure" abstract="false" name="AccountsReceivableAllowanceForCreditLossesCurrentDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_ForeignEquitiesMember" abstract="true" name="ForeignEquitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_CommittedLineofCreditFacilityFiveMember" abstract="true" name="CommittedLineofCreditFacilityFiveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DisclosureEnvironmentalCommitmentsAndContingenciesAdditionalInformationAbstract" abstract="true" name="DisclosureEnvironmentalCommitmentsAndContingenciesAdditionalInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_CommodityContractCashFlowHedgesAbstract" abstract="true" name="CommodityContractCashFlowHedgesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_RSAM" abstract="false" name="RSAM" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_Numberofcustomersacquiredthroughacquisition" abstract="false" name="Numberofcustomersacquiredthroughacquisition" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/> |
| <xs:element id="cpk_NumberOfYearstoCollectBenefits" abstract="false" name="NumberOfYearstoCollectBenefits" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/> |
| <xs:element id="cpk_FloridaPropaneMember" abstract="true" name="FloridaPropaneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_GuaranteeTypeAxis" abstract="true" name="GuaranteeTypeAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_ChesapeakePensionPlanMember" abstract="true" name="ChesapeakePensionPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_MaximumAmountOfEnvironmentalCostsThatCanBeRecoveredFromInsuranceAndCustomers" abstract="false" name="MaximumAmountOfEnvironmentalCostsThatCanBeRecoveredFromInsuranceAndCustomers" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_ScheduleofLeasesReportedonConsolidatedStatementofFinancialPositionTableTextBlock" abstract="false" name="ScheduleofLeasesReportedonConsolidatedStatementofFinancialPositionTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/> |
| <xs:element id="cpk_AspireMember" abstract="true" name="AspireMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_PeriodofRemainingPerformanceObligationsAxis" abstract="true" name="PeriodofRemainingPerformanceObligationsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_UnderrecoveredGasFuelCosts" abstract="false" name="UnderrecoveredGasFuelCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_EnergyDistributionMember" abstract="true" name="EnergyDistributionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_MilesOfNaturalGasPipeline" abstract="false" name="MilesOfNaturalGasPipeline" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:lengthItemType"/> |
| <xs:element id="cpk_DisclosureSegmentInformationScheduleOfSegmentReportingInformationBySegmentAbstract" abstract="true" name="DisclosureSegmentInformationScheduleOfSegmentReportingInformationBySegmentAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_PropaneDistributionMainsMember" abstract="true" name="PropaneDistributionMainsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_AcquisitionAdjustmentMember" abstract="true" name="AcquisitionAdjustmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DisclosureEmployeeBenefitPlansAmountsInAccumulatedOtherComprehensiveIncomeLossAndRegulatoryAssetAbstract" abstract="true" name="DisclosureEmployeeBenefitPlansAmountsInAccumulatedOtherComprehensiveIncomeLossAndRegulatoryAssetAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_AccumulatedGainLossFromInterestRateSwapCashFlowsHedgesMember" abstract="true" name="AccumulatedGainLossFromInterestRateSwapCashFlowsHedgesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_SummaryofEffectsofFederalTaxReformonRegulatedBusinessesTableTextBlock" abstract="false" name="SummaryofEffectsofFederalTaxReformonRegulatedBusinessesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/> |
| <xs:element id="cpk_LesseeFutureOperatingLeaseOptionPayments" abstract="false" name="LesseeFutureOperatingLeaseOptionPayments" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_DepreciationAndAccretionIncludedInOtherCosts" abstract="false" name="DepreciationAndAccretionIncludedInOtherCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_PrudentialUnfundedCommitmentsMember" abstract="true" name="PrudentialUnfundedCommitmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNoteDueOnTwoThousandTwentyMember" abstract="true" name="UncollateralizedSeniorNoteDueOnTwoThousandTwentyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_OtherOperatingRevenue" abstract="false" name="OtherOperatingRevenue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_CapitalExpenditureAbstract" abstract="true" name="CapitalExpenditureAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_DeferredTaxAssetSelfInsuranceAccruals" abstract="false" name="DeferredTaxAssetSelfInsuranceAccruals" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_EmployeeMinimumAgeToParticipateUnderDefinedContributionPlan" abstract="false" name="EmployeeMinimumAgeToParticipateUnderDefinedContributionPlan" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/> |
| <xs:element id="cpk_OtherSegmentsAndIntersegmentsEliminationsMember" abstract="true" name="OtherSegmentsAndIntersegmentsEliminationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_ScheduleOfAssetAllocationByAssetCategoryTableTableTextBlock" abstract="false" name="ScheduleOfAssetAllocationByAssetCategoryTableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/> |
| <xs:element id="cpk_FPUMedicalPlanandChesapeakeOPRBMember" abstract="true" name="FPUMedicalPlanandChesapeakeOPRBMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_SharpEnergyIncMember" abstract="true" name="SharpEnergyIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNotesDueOnTwoThousandTwentyNineMember" abstract="true" name="UncollateralizedSeniorNotesDueOnTwoThousandTwentyNineMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_Lengthoftimeuntildeferredamountsrecoveredorrefunded" abstract="false" name="Lengthoftimeuntildeferredamountsrecoveredorrefunded" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/> |
| <xs:element id="cpk_FPUelectricdivisionMember" abstract="true" name="FPUelectricdivisionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_EastCoastReinforcementProjectsNewSmyrnaBeachMember" abstract="true" name="EastCoastReinforcementProjectsNewSmyrnaBeachMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="cpk_NaturalgasdistributionoperationsMember" abstract="true" name="NaturalgasdistributionoperationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_ScheduleOfMaturitiesOfLTDTableTextBlock" abstract="false" name="ScheduleOfMaturitiesOfLTDTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/> |
| <xs:element id="cpk_PropaneBulkPlantsAndTanksMember" abstract="true" name="PropaneBulkPlantsAndTanksMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_EnvironmentalCommitmentsAndContingenciesTable" abstract="true" name="EnvironmentalCommitmentsAndContingenciesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_NetOperatingLossesAndTaxCarryforwards" abstract="false" name="NetOperatingLossesAndTaxCarryforwards" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_TotalFutureRepayments" abstract="false" name="TotalFutureRepayments" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_LongTermDebtAnnualMaturitiesAbstract" abstract="true" name="LongTermDebtAnnualMaturitiesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_TotalMember" abstract="true" name="TotalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DisclosureShortTermBorrowingAdditionalInformationAbstract" abstract="true" name="DisclosureShortTermBorrowingAdditionalInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_LineOfCreditFacilityInterestRateDescription2" abstract="false" name="LineOfCreditFacilityInterestRateDescription2" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_DiversifiedEnergyMember" abstract="true" name="DiversifiedEnergyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DisclosureIncomeTaxesAdditionalInformationAbstract" abstract="true" name="DisclosureIncomeTaxesAdditionalInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_NumberOfShortTermLinesOfCreditRateSwap" abstract="false" name="NumberOfShortTermLinesOfCreditRateSwap" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/> |
| <xs:element id="cpk_MarkToMarketEnergyAssetsIncludingPutOptionMember" abstract="true" name="MarkToMarketEnergyAssetsIncludingPutOptionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRegulatoryLiabilitiesNoncurrent" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRegulatoryLiabilitiesNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_CommonStockEquityToTotalCapitalization" abstract="false" name="CommonStockEquityToTotalCapitalization" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/> |
| <xs:element id="cpk_DefinedBenefitPlanAlternativeInvestmentsFairValueofPlanAssets" abstract="false" name="DefinedBenefitPlanAlternativeInvestmentsFairValueofPlanAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_DisclosureIncomeTaxesSummaryOfReconciliationOfStatutoryFederalTaxAndEffectiveIncomeTaxRatesAbstract" abstract="true" name="DisclosureIncomeTaxesSummaryOfReconciliationOfStatutoryFederalTaxAndEffectiveIncomeTaxRatesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_UnderRecoveredGRIPRevenuesMember" abstract="true" name="UnderRecoveredGRIPRevenuesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_NetOperatingLossesAndTaxCarryback" abstract="false" name="NetOperatingLossesAndTaxCarryback" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_FeesOnEquityIssuanceAtTheMarket" abstract="false" name="FeesOnEquityIssuanceAtTheMarket" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_DisclosureIncomeTaxesScheduleOfIncomeTaxExpenseAbstract" abstract="true" name="DisclosureIncomeTaxesScheduleOfIncomeTaxExpenseAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_DefinedBenefitPlanPostMergerRegulatoryAssets" abstract="false" name="DefinedBenefitPlanPostMergerRegulatoryAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_SummaryOfAccountingPoliciesTable" abstract="true" name="SummaryOfAccountingPoliciesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNoteDueDecember2028Member" abstract="true" name="UncollateralizedSeniorNoteDueDecember2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="cpk_PeninsulaPipelineCompanyMember" abstract="true" name="PeninsulaPipelineCompanyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_NumberOfBusinessDays" abstract="false" name="NumberOfBusinessDays" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/> |
| <xs:element id="cpk_SeafordMember" abstract="true" name="SeafordMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_RabbiTrustAssociatedWithDeferredCompensationPlanMember" abstract="true" name="RabbiTrustAssociatedWithDeferredCompensationPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_AuditorInformationAbstract" abstract="true" name="AuditorInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/> |
| <xs:element id="cpk_AwardtokeyemployeesMember" abstract="true" name="AwardtokeyemployeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_DefinedContributionPlanEligibilityThresholdRequisiteServicePeriod" abstract="false" name="DefinedContributionPlanEligibilityThresholdRequisiteServicePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/> |
| <xs:element id="cpk_AccruedAssetRemovalCostMember" abstract="true" name="AccruedAssetRemovalCostMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_UncollateralizedSeniorNoteDueOnTwoThousandTwentyThreeMember" abstract="true" name="UncollateralizedSeniorNoteDueOnTwoThousandTwentyThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_OceanCityMarylandReinforcementMember" abstract="true" name="OceanCityMarylandReinforcementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="cpk_InterestRateSwapRateLowRangeMember" abstract="true" name="InterestRateSwapRateLowRangeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_NaturalGasDistributionMember" abstract="true" name="NaturalGasDistributionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_PensionSettlementExpense" abstract="false" name="PensionSettlementExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="cpk_PensionAndOtherPostretirementBenefitsMember" abstract="true" name="PensionAndOtherPostretirementBenefitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="cpk_StockIssuedDuringThePeriodSharesRetirementSavingsPlanAndDividendReinvestmentPlan" abstract="false" name="StockIssuedDuringThePeriodSharesRetirementSavingsPlanAndDividendReinvestmentPlan" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/> |
| <xs:element id="cpk_EasternShoreGasCompanyMember" abstract="true" name="EasternShoreGasCompanyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| </xs:schema> |