10-Q Filing

CALIFORNIA WATER SERVICE GROUP CIK: 1035201 Q1 2025

Filing Information

Form Type	10-Q
Accession Number	`0001035201-25-000006`
Period End Date	20250331
Filing Date	20250501
Fiscal Year	2025
Fiscal Period	Q1
XBRL Instance	cwt-20250331_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 180 Income Statement 104 Cash Flow Statement 136 Comprehensive Income 36

Balance Sheet 180 line items

Line Item	Tag	Value	Unit	Period
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	136.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	136.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	136.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	136.00M	shares	Point-in-time
Utility plant	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$5.40B	USD	Point-in-time
Utility plant	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$5.40B	USD	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	59.57M	shares	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	59.57M	shares	Point-in-time
Utility plant	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$5.50B	USD	Point-in-time
Utility plant	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$5.50B	USD	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	59.48M	shares	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	59.48M	shares	Point-in-time
Less accumulated depreciation and amortization	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$1.27B	USD	Point-in-time
Less accumulated depreciation and amortization	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$1.27B	USD	Point-in-time
Less accumulated depreciation and amortization	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$1.24B	USD	Point-in-time
Less accumulated depreciation and amortization	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$1.24B	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$4.16B	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$4.16B	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$4.23B	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$4.23B	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$44.46M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$44.46M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$50.12M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$50.12M	USD	Point-in-time
Restricted cash	`RestrictedCashCurrent`	$45.57M	USD	Point-in-time
Restricted cash	`RestrictedCashCurrent`	$45.57M	USD	Point-in-time
Restricted cash	`RestrictedCashCurrent`	$45.67M	USD	Point-in-time
Restricted cash	`RestrictedCashCurrent`	$45.67M	USD	Point-in-time
Customers, net	`AccountsReceivableNetCurrent`	$53.89M	USD	Point-in-time
Customers, net	`AccountsReceivableNetCurrent`	$53.89M	USD	Point-in-time
Customers, net	`AccountsReceivableNetCurrent`	$58.59M	USD	Point-in-time
Customers, net	`AccountsReceivableNetCurrent`	$58.59M	USD	Point-in-time
Regulatory balancing accounts	`RegulatoryAssetsCurrent`	$55.92M	USD	Point-in-time
Regulatory balancing accounts	`RegulatoryAssetsCurrent`	$55.92M	USD	Point-in-time
Regulatory balancing accounts	`RegulatoryAssetsCurrent`	$62.29M	USD	Point-in-time
Regulatory balancing accounts	`RegulatoryAssetsCurrent`	$62.29M	USD	Point-in-time
Other, net	`NontradeReceivablesCurrent`	$33.98M	USD	Point-in-time
Other, net	`NontradeReceivablesCurrent`	$33.98M	USD	Point-in-time
Other, net	`NontradeReceivablesCurrent`	$32.82M	USD	Point-in-time
Other, net	`NontradeReceivablesCurrent`	$32.82M	USD	Point-in-time
Accrued and unbilled revenue, net	`ReceivablesLongTermContractsOrPrograms`	$34.97M	USD	Point-in-time
Accrued and unbilled revenue, net	`ReceivablesLongTermContractsOrPrograms`	$34.97M	USD	Point-in-time
Accrued and unbilled revenue, net	`ReceivablesLongTermContractsOrPrograms`	$39.72M	USD	Point-in-time
Accrued and unbilled revenue, net	`ReceivablesLongTermContractsOrPrograms`	$39.72M	USD	Point-in-time
Materials and supplies	`PublicUtilitiesInventory`	$20.51M	USD	Point-in-time
Materials and supplies	`PublicUtilitiesInventory`	$20.51M	USD	Point-in-time
Materials and supplies	`PublicUtilitiesInventory`	$20.28M	USD	Point-in-time
Materials and supplies	`PublicUtilitiesInventory`	$20.28M	USD	Point-in-time
Taxes, prepaid expenses, and other assets	`TaxesPrepaidExpensesAndOtherAssetsCurrent`	$19.74M	USD	Point-in-time
Taxes, prepaid expenses, and other assets	`TaxesPrepaidExpensesAndOtherAssetsCurrent`	$19.74M	USD	Point-in-time
Taxes, prepaid expenses, and other assets	`TaxesPrepaidExpensesAndOtherAssetsCurrent`	$24.84M	USD	Point-in-time
Taxes, prepaid expenses, and other assets	`TaxesPrepaidExpensesAndOtherAssetsCurrent`	$24.84M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$319.22M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$319.22M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$324.14M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$324.14M	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsNoncurrent`	$357.41M	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsNoncurrent`	$357.41M	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsNoncurrent`	$367.23M	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsNoncurrent`	$367.23M	USD	Point-in-time
Goodwill	`Goodwill`	$37.06M	USD	Point-in-time
Goodwill	`Goodwill`	$37.06M	USD	Point-in-time
Goodwill	`Goodwill`	$37.06M	USD	Point-in-time
Goodwill	`Goodwill`	$37.06M	USD	Point-in-time
Other	`OtherAssetsNoncurrent`	$304.02M	USD	Point-in-time
Other	`OtherAssetsNoncurrent`	$304.02M	USD	Point-in-time
Other	`OtherAssetsNoncurrent`	$302.97M	USD	Point-in-time
Other	`OtherAssetsNoncurrent`	$302.97M	USD	Point-in-time
Total other assets	`TotalOtherAssets`	$697.44M	USD	Point-in-time
Total other assets	`TotalOtherAssets`	$697.44M	USD	Point-in-time
Total other assets	`TotalOtherAssets`	$708.31M	USD	Point-in-time
Total other assets	`TotalOtherAssets`	$708.31M	USD	Point-in-time
TOTAL ASSETS	`Assets`	$5.18B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$5.18B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$5.26B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$5.26B	USD	Point-in-time
Common stock, $0.01 par value; 136,000 shares authorized, 59,570 and 59,484 outstanding on March 31, 2025 and December 31, 2024, respectively	`CommonStockValue`	$595.00K	USD	Point-in-time
Common stock, $0.01 par value; 136,000 shares authorized, 59,570 and 59,484 outstanding on March 31, 2025 and December 31, 2024, respectively	`CommonStockValue`	$595.00K	USD	Point-in-time
Common stock, $0.01 par value; 136,000 shares authorized, 59,570 and 59,484 outstanding on March 31, 2025 and December 31, 2024, respectively	`CommonStockValue`	$596.00K	USD	Point-in-time
Common stock, $0.01 par value; 136,000 shares authorized, 59,570 and 59,484 outstanding on March 31, 2025 and December 31, 2024, respectively	`CommonStockValue`	$596.00K	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$966.98M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$966.98M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$967.69M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$967.69M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$674.92M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$674.92M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$668.02M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$668.02M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-7.22M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-7.22M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-7.06M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-7.06M	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$3.02M	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$3.02M	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$2.74M	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$2.74M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.47B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.47B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.64B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.64B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.43B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.43B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.63B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.63B	USD	Point-in-time
Long-term debt, net	`LongTermDebtAndCapitalLeaseObligations`	$1.10B	USD	Point-in-time
Long-term debt, net	`LongTermDebtAndCapitalLeaseObligations`	$1.10B	USD	Point-in-time
Long-term debt, net	`LongTermDebtAndCapitalLeaseObligations`	$1.10B	USD	Point-in-time
Long-term debt, net	`LongTermDebtAndCapitalLeaseObligations`	$1.10B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$2.74B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$2.74B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$2.74B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$2.74B	USD	Point-in-time
Current maturities of long-term debt, net	`LongTermDebtCurrent`	$72.42M	USD	Point-in-time
Current maturities of long-term debt, net	`LongTermDebtCurrent`	$72.42M	USD	Point-in-time
Current maturities of long-term debt, net	`LongTermDebtCurrent`	$72.44M	USD	Point-in-time
Current maturities of long-term debt, net	`LongTermDebtCurrent`	$72.44M	USD	Point-in-time
Short-term borrowings	`ShortTermBorrowings`	$285.00M	USD	Point-in-time
Short-term borrowings	`ShortTermBorrowings`	$285.00M	USD	Point-in-time
Short-term borrowings	`ShortTermBorrowings`	$205.00M	USD	Point-in-time
Short-term borrowings	`ShortTermBorrowings`	$205.00M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$167.53M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$167.53M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$141.29M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$141.29M	USD	Point-in-time
Regulatory balancing accounts	`RegulatoryLiabilityCurrent`	$19.11M	USD	Point-in-time
Regulatory balancing accounts	`RegulatoryLiabilityCurrent`	$19.11M	USD	Point-in-time
Regulatory balancing accounts	`RegulatoryLiabilityCurrent`	$22.65M	USD	Point-in-time
Regulatory balancing accounts	`RegulatoryLiabilityCurrent`	$22.65M	USD	Point-in-time
Accrued other taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$6.08M	USD	Point-in-time
Accrued other taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$6.08M	USD	Point-in-time
Accrued other taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$6.71M	USD	Point-in-time
Accrued other taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$6.71M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$19.83M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$19.83M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$8.41M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$8.41M	USD	Point-in-time
Other accrued liabilities	`AccruedLiabilitiesAndOtherLiabilities`	$59.70M	USD	Point-in-time
Other accrued liabilities	`AccruedLiabilitiesAndOtherLiabilities`	$59.70M	USD	Point-in-time
Other accrued liabilities	`AccruedLiabilitiesAndOtherLiabilities`	$56.27M	USD	Point-in-time
Other accrued liabilities	`AccruedLiabilitiesAndOtherLiabilities`	$56.27M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$538.36M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$538.36M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$604.08M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$604.08M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$411.08M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$411.08M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$416.23M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$416.23M	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityNoncurrent`	$814.55M	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityNoncurrent`	$814.55M	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityNoncurrent`	$826.60M	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityNoncurrent`	$826.60M	USD	Point-in-time
Pension	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$81.67M	USD	Point-in-time
Pension	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$81.67M	USD	Point-in-time
Pension	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$82.01M	USD	Point-in-time
Pension	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$82.01M	USD	Point-in-time
Advances for construction	`ContractWithCustomerRefundLiabilityNoncurrent`	$202.42M	USD	Point-in-time
Advances for construction	`ContractWithCustomerRefundLiabilityNoncurrent`	$202.42M	USD	Point-in-time
Advances for construction	`ContractWithCustomerRefundLiabilityNoncurrent`	$202.61M	USD	Point-in-time
Advances for construction	`ContractWithCustomerRefundLiabilityNoncurrent`	$202.61M	USD	Point-in-time
Contributions in aid of construction	`ContributionsInAidOfConstruction`	$294.97M	USD	Point-in-time
Contributions in aid of construction	`ContributionsInAidOfConstruction`	$294.97M	USD	Point-in-time
Contributions in aid of construction	`ContributionsInAidOfConstruction`	$293.96M	USD	Point-in-time
Contributions in aid of construction	`ContributionsInAidOfConstruction`	$293.96M	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$96.09M	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$96.09M	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$94.18M	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$94.18M	USD	Point-in-time
Commitments and contingencies (Note 9)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies (Note 9)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies (Note 9)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies (Note 9)	`CommitmentsAndContingencies`	-	USD	Point-in-time
TOTAL CAPITALIZATION AND LIABILITIES	`LiabilitiesAndStockholdersEquity`	$5.26B	USD	Point-in-time
TOTAL CAPITALIZATION AND LIABILITIES	`LiabilitiesAndStockholdersEquity`	$5.26B	USD	Point-in-time
TOTAL CAPITALIZATION AND LIABILITIES	`LiabilitiesAndStockholdersEquity`	$5.18B	USD	Point-in-time
TOTAL CAPITALIZATION AND LIABILITIES	`LiabilitiesAndStockholdersEquity`	$5.18B	USD	Point-in-time

Income Statement 104 line items

Line Item	Tag	Value	Unit	Period
Operating revenue	`RegulatedOperatingRevenueWater`	$270.75M	USD	1 Quarter
Operating revenue	`RegulatedOperatingRevenueWater`	$270.75M	USD	1 Quarter
Operating revenue	`RegulatedOperatingRevenueWater`	$203.97M	USD	1 Quarter
Operating revenue	`RegulatedOperatingRevenueWater`	$203.97M	USD	1 Quarter
Water production costs	`UtilitiesOperatingExpenseProductsAndServices`	$62.99M	USD	1 Quarter
Water production costs	`UtilitiesOperatingExpenseProductsAndServices`	$62.99M	USD	1 Quarter
Water production costs	`UtilitiesOperatingExpenseProductsAndServices`	$64.19M	USD	1 Quarter
Water production costs	`UtilitiesOperatingExpenseProductsAndServices`	$64.19M	USD	1 Quarter
Administrative and general	`GeneralAndAdministrativeExpense`	$34.17M	USD	1 Quarter
Administrative and general	`GeneralAndAdministrativeExpense`	$34.17M	USD	1 Quarter
Administrative and general	`GeneralAndAdministrativeExpense`	$35.60M	USD	1 Quarter
Administrative and general	`GeneralAndAdministrativeExpense`	$35.60M	USD	1 Quarter
Other operations	`UtilitiesOperatingExpenseOther`	$26.93M	USD	1 Quarter
Other operations	`UtilitiesOperatingExpenseOther`	$26.93M	USD	1 Quarter
Other operations	`UtilitiesOperatingExpenseOther`	$28.84M	USD	1 Quarter
Other operations	`UtilitiesOperatingExpenseOther`	$28.84M	USD	1 Quarter
Maintenance	`UtilitiesOperatingExpenseMaintenance`	$8.01M	USD	1 Quarter
Maintenance	`UtilitiesOperatingExpenseMaintenance`	$8.01M	USD	1 Quarter
Maintenance	`UtilitiesOperatingExpenseMaintenance`	$7.67M	USD	1 Quarter
Maintenance	`UtilitiesOperatingExpenseMaintenance`	$7.67M	USD	1 Quarter
Depreciation and amortization	`UtilitiesOperatingExpenseDepreciationAndAmortization`	$32.84M	USD	1 Quarter
Depreciation and amortization	`UtilitiesOperatingExpenseDepreciationAndAmortization`	$32.84M	USD	1 Quarter
Depreciation and amortization	`UtilitiesOperatingExpenseDepreciationAndAmortization`	$35.96M	USD	1 Quarter
Depreciation and amortization	`UtilitiesOperatingExpenseDepreciationAndAmortization`	$35.96M	USD	1 Quarter
Income taxes	`UtilitiesOperatingExpenseIncomeTaxExpenseBenefit`	$15.54M	USD	1 Quarter
Income taxes	`UtilitiesOperatingExpenseIncomeTaxExpenseBenefit`	$15.54M	USD	1 Quarter
Income taxes	`UtilitiesOperatingExpenseIncomeTaxExpenseBenefit`	$1.03M	USD	1 Quarter
Income taxes	`UtilitiesOperatingExpenseIncomeTaxExpenseBenefit`	$1.03M	USD	1 Quarter
Property and other taxes	`UtilitiesOperatingExpenseTaxes`	$9.76M	USD	1 Quarter
Property and other taxes	`UtilitiesOperatingExpenseTaxes`	$9.76M	USD	1 Quarter
Property and other taxes	`UtilitiesOperatingExpenseTaxes`	$10.97M	USD	1 Quarter
Property and other taxes	`UtilitiesOperatingExpenseTaxes`	$10.97M	USD	1 Quarter
Total operating expenses	`UtilitiesOperatingExpense`	$181.63M	USD	1 Quarter
Total operating expenses	`UtilitiesOperatingExpense`	$181.63M	USD	1 Quarter
Total operating expenses	`UtilitiesOperatingExpense`	$192.85M	USD	1 Quarter
Total operating expenses	`UtilitiesOperatingExpense`	$192.85M	USD	1 Quarter
Net operating income	`OperatingIncomeLoss`	$22.34M	USD	1 Quarter
Net operating income	`OperatingIncomeLoss`	$22.34M	USD	1 Quarter
Net operating income	`OperatingIncomeLoss`	$77.89M	USD	1 Quarter
Net operating income	`OperatingIncomeLoss`	$77.89M	USD	1 Quarter
Non-regulated revenue	`UnregulatedOperatingRevenue`	$5.08M	USD	1 Quarter
Non-regulated revenue	`UnregulatedOperatingRevenue`	$5.08M	USD	1 Quarter
Non-regulated revenue	`UnregulatedOperatingRevenue`	$5.10M	USD	1 Quarter
Non-regulated revenue	`UnregulatedOperatingRevenue`	$5.10M	USD	1 Quarter
Non-regulated expenses	`OtherNonoperatingExpense`	$3.47M	USD	1 Quarter
Non-regulated expenses	`OtherNonoperatingExpense`	$3.47M	USD	1 Quarter
Non-regulated expenses	`OtherNonoperatingExpense`	$1.95M	USD	1 Quarter
Non-regulated expenses	`OtherNonoperatingExpense`	$1.95M	USD	1 Quarter
Other components of net periodic benefit credit	`DefinedBenefitPlanOtherCosts`	$-4.80M	USD	1 Quarter
Other components of net periodic benefit credit	`DefinedBenefitPlanOtherCosts`	$-4.80M	USD	1 Quarter
Other components of net periodic benefit credit	`DefinedBenefitPlanOtherCosts`	$-3.27M	USD	1 Quarter
Other components of net periodic benefit credit	`DefinedBenefitPlanOtherCosts`	$-3.27M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$1.74M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$1.74M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$1.80M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$1.80M	USD	1 Quarter
Income taxes on other income and expenses	`UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit`	$1.32M	USD	1 Quarter
Income taxes on other income and expenses	`UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit`	$1.32M	USD	1 Quarter
Income taxes on other income and expenses	`UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit`	$1.70M	USD	1 Quarter
Income taxes on other income and expenses	`UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit`	$1.70M	USD	1 Quarter
Net other income	`OtherNonoperatingIncomeExpense`	$6.84M	USD	1 Quarter
Net other income	`OtherNonoperatingIncomeExpense`	$6.84M	USD	1 Quarter
Net other income	`OtherNonoperatingIncomeExpense`	$6.51M	USD	1 Quarter
Net other income	`OtherNonoperatingIncomeExpense`	$6.51M	USD	1 Quarter
Interest expense	`InterestExpenseNonoperating`	$15.80M	USD	1 Quarter
Interest expense	`InterestExpenseNonoperating`	$15.80M	USD	1 Quarter
Interest expense	`InterestExpenseNonoperating`	$16.51M	USD	1 Quarter
Interest expense	`InterestExpenseNonoperating`	$16.51M	USD	1 Quarter
Allowance for borrowed funds used during construction	`InterestCostsCapitalizedAdjustment`	$857.00K	USD	1 Quarter
Allowance for borrowed funds used during construction	`InterestCostsCapitalizedAdjustment`	$857.00K	USD	1 Quarter
Allowance for borrowed funds used during construction	`InterestCostsCapitalizedAdjustment`	$758.00K	USD	1 Quarter
Allowance for borrowed funds used during construction	`InterestCostsCapitalizedAdjustment`	$758.00K	USD	1 Quarter
Net interest expense	`InterestCostsIncurred`	$15.04M	USD	1 Quarter
Net interest expense	`InterestCostsIncurred`	$15.04M	USD	1 Quarter
Net interest expense	`InterestCostsIncurred`	$15.65M	USD	1 Quarter
Net interest expense	`InterestCostsIncurred`	$15.65M	USD	1 Quarter
Net income	`ProfitLoss`	$69.69M	USD	1 Quarter
Net income	`ProfitLoss`	$69.69M	USD	1 Quarter
Net income	`ProfitLoss`	$13.20M	USD	1 Quarter
Net income	`ProfitLoss`	$13.20M	USD	1 Quarter
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-227.00K	USD	1 Quarter
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-227.00K	USD	1 Quarter
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-129.00K	USD	1 Quarter
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-129.00K	USD	1 Quarter
Net income attributable to California Water Service Group	`NetIncomeLoss`	$69.92M	USD	1 Quarter
Net income attributable to California Water Service Group	`NetIncomeLoss`	$69.92M	USD	1 Quarter
Net income attributable to California Water Service Group	`NetIncomeLoss`	$13.33M	USD	1 Quarter
Net income attributable to California Water Service Group	`NetIncomeLoss`	$13.33M	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$1.21	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$1.21	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.22	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.22	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$1.21	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$1.21	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.22	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.22	USD	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	57.73M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	57.73M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	59.51M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	59.51M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	59.57M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	59.57M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	57.77M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	57.77M	shares	1 Quarter

Cash Flow Statement 136 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$69.69M	USD	1 Quarter
Net income	`ProfitLoss`	$69.69M	USD	1 Quarter
Net income	`ProfitLoss`	$13.20M	USD	1 Quarter
Net income	`ProfitLoss`	$13.20M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$36.49M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$36.49M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$33.40M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$33.40M	USD	1 Quarter
Change in value of life insurance contracts	`LifeInsuranceCorporateOrBankOwnedChangeInValue`	$356.00K	USD	1 Quarter
Change in value of life insurance contracts	`LifeInsuranceCorporateOrBankOwnedChangeInValue`	$356.00K	USD	1 Quarter
Change in value of life insurance contracts	`LifeInsuranceCorporateOrBankOwnedChangeInValue`	$1.67M	USD	1 Quarter
Change in value of life insurance contracts	`LifeInsuranceCorporateOrBankOwnedChangeInValue`	$1.67M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$1.74M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$1.74M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$1.80M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$1.80M	USD	1 Quarter
Receivables and accrued and unbilled revenue	`IncreaseDecreaseInReceivables`	$-21.52M	USD	1 Quarter
Receivables and accrued and unbilled revenue	`IncreaseDecreaseInReceivables`	$-21.52M	USD	1 Quarter
Receivables and accrued and unbilled revenue	`IncreaseDecreaseInReceivables`	$2.54M	USD	1 Quarter
Receivables and accrued and unbilled revenue	`IncreaseDecreaseInReceivables`	$2.54M	USD	1 Quarter
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-21.04M	USD	1 Quarter
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-21.04M	USD	1 Quarter
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-20.04M	USD	1 Quarter
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-20.04M	USD	1 Quarter
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$6.03M	USD	1 Quarter
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$6.03M	USD	1 Quarter
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$4.79M	USD	1 Quarter
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$4.79M	USD	1 Quarter
Other current liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$14.26M	USD	1 Quarter
Other current liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$14.26M	USD	1 Quarter
Other current liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$17.41M	USD	1 Quarter
Other current liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$17.41M	USD	1 Quarter
Other changes in noncurrent assets and liabilities	`IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet`	$86.03M	USD	1 Quarter
Other changes in noncurrent assets and liabilities	`IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet`	$86.03M	USD	1 Quarter
Other changes in noncurrent assets and liabilities	`IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet`	$-4.99M	USD	1 Quarter
Other changes in noncurrent assets and liabilities	`IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet`	$-4.99M	USD	1 Quarter
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$38.42M	USD	1 Quarter
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$38.42M	USD	1 Quarter
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$26.52M	USD	1 Quarter
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$26.52M	USD	1 Quarter
Utility plant expenditures	`PaymentsToAcquireWaterAndWasteWaterSystems`	$110.10M	USD	1 Quarter
Utility plant expenditures	`PaymentsToAcquireWaterAndWasteWaterSystems`	$110.10M	USD	1 Quarter
Utility plant expenditures	`PaymentsToAcquireWaterAndWasteWaterSystems`	$109.81M	USD	1 Quarter
Utility plant expenditures	`PaymentsToAcquireWaterAndWasteWaterSystems`	$109.81M	USD	1 Quarter
Life insurance proceeds	`ProceedsFromLifeInsurancePolicies`	$1.43M	USD	1 Quarter
Life insurance proceeds	`ProceedsFromLifeInsurancePolicies`	$1.43M	USD	1 Quarter
Life insurance proceeds	`ProceedsFromLifeInsurancePolicies`	-	USD	1 Quarter
Life insurance proceeds	`ProceedsFromLifeInsurancePolicies`	-	USD	1 Quarter
Purchase of life insurance contracts	`PaymentsToAcquireLifeInsurancePolicies`	$1.43M	USD	1 Quarter
Purchase of life insurance contracts	`PaymentsToAcquireLifeInsurancePolicies`	$1.43M	USD	1 Quarter
Purchase of life insurance contracts	`PaymentsToAcquireLifeInsurancePolicies`	-	USD	1 Quarter
Purchase of life insurance contracts	`PaymentsToAcquireLifeInsurancePolicies`	-	USD	1 Quarter
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-207.00K	USD	1 Quarter
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-207.00K	USD	1 Quarter
Other	`PaymentsForProceedsFromOtherInvestingActivities`	-	USD	1 Quarter
Other	`PaymentsForProceedsFromOtherInvestingActivities`	-	USD	1 Quarter
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-109.90M	USD	1 Quarter
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-109.90M	USD	1 Quarter
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-109.81M	USD	1 Quarter
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-109.81M	USD	1 Quarter
Short-term borrowings	`ProceedsFromShortTermDebt`	$170.00M	USD	1 Quarter
Short-term borrowings	`ProceedsFromShortTermDebt`	$170.00M	USD	1 Quarter
Short-term borrowings	`ProceedsFromShortTermDebt`	$170.00M	USD	1 Quarter
Short-term borrowings	`ProceedsFromShortTermDebt`	$170.00M	USD	1 Quarter
Repayment of short-term borrowings	`RepaymentsOfShortTermDebt`	$70.00M	USD	1 Quarter
Repayment of short-term borrowings	`RepaymentsOfShortTermDebt`	$70.00M	USD	1 Quarter
Repayment of short-term borrowings	`RepaymentsOfShortTermDebt`	$90.00M	USD	1 Quarter
Repayment of short-term borrowings	`RepaymentsOfShortTermDebt`	$90.00M	USD	1 Quarter
Repayment of long-term debt	`RepaymentsOfLongTermDebt`	$206.00K	USD	1 Quarter
Repayment of long-term debt	`RepaymentsOfLongTermDebt`	$206.00K	USD	1 Quarter
Repayment of long-term debt	`RepaymentsOfLongTermDebt`	$214.00K	USD	1 Quarter
Repayment of long-term debt	`RepaymentsOfLongTermDebt`	$214.00K	USD	1 Quarter
Advances and contributions in aid of construction	`ProceedsFromContributionInAidOfConstructionFinancingActivities`	$4.52M	USD	1 Quarter
Advances and contributions in aid of construction	`ProceedsFromContributionInAidOfConstructionFinancingActivities`	$4.52M	USD	1 Quarter
Advances and contributions in aid of construction	`ProceedsFromContributionInAidOfConstructionFinancingActivities`	$9.50M	USD	1 Quarter
Advances and contributions in aid of construction	`ProceedsFromContributionInAidOfConstructionFinancingActivities`	$9.50M	USD	1 Quarter
Refunds of advances for construction	`RefundsOfAdvancesForConstruction`	$2.32M	USD	1 Quarter
Refunds of advances for construction	`RefundsOfAdvancesForConstruction`	$2.32M	USD	1 Quarter
Refunds of advances for construction	`RefundsOfAdvancesForConstruction`	$2.35M	USD	1 Quarter
Refunds of advances for construction	`RefundsOfAdvancesForConstruction`	$2.35M	USD	1 Quarter
Repurchase of common stock	`PaymentsForRepurchaseOfCommonStock`	$1.11M	USD	1 Quarter
Repurchase of common stock	`PaymentsForRepurchaseOfCommonStock`	$1.11M	USD	1 Quarter
Repurchase of common stock	`PaymentsForRepurchaseOfCommonStock`	$1.14M	USD	1 Quarter
Repurchase of common stock	`PaymentsForRepurchaseOfCommonStock`	$1.14M	USD	1 Quarter
Issuance of common stock	`ProceedsFromIssuanceOfCommonStock`	$769.00K	USD	1 Quarter
Issuance of common stock	`ProceedsFromIssuanceOfCommonStock`	$769.00K	USD	1 Quarter
Issuance of common stock	`ProceedsFromIssuanceOfCommonStock`	$743.00K	USD	1 Quarter
Issuance of common stock	`ProceedsFromIssuanceOfCommonStock`	$743.00K	USD	1 Quarter
Dividends paid	`PaymentsOfDividendsCommonStock`	$16.16M	USD	1 Quarter
Dividends paid	`PaymentsOfDividendsCommonStock`	$16.16M	USD	1 Quarter
Dividends paid	`PaymentsOfDividendsCommonStock`	$20.23M	USD	1 Quarter
Dividends paid	`PaymentsOfDividendsCommonStock`	$20.23M	USD	1 Quarter
Distribution to noncontrolling interest	`PaymentsToMinorityShareholders`	-	USD	1 Quarter
Distribution to noncontrolling interest	`PaymentsToMinorityShareholders`	-	USD	1 Quarter
Distribution to noncontrolling interest	`PaymentsToMinorityShareholders`	$451.00K	USD	1 Quarter
Distribution to noncontrolling interest	`PaymentsToMinorityShareholders`	$451.00K	USD	1 Quarter
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$1.16M	USD	1 Quarter
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$1.16M	USD	1 Quarter
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	-	USD	1 Quarter
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	-	USD	1 Quarter
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$86.59M	USD	1 Quarter
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$86.59M	USD	1 Quarter
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$65.92M	USD	1 Quarter
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$65.92M	USD	1 Quarter
Change in cash, cash equivalents, and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$3.30M	USD	1 Quarter
Change in cash, cash equivalents, and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$3.30M	USD	1 Quarter
Change in cash, cash equivalents, and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-5.55M	USD	1 Quarter
Change in cash, cash equivalents, and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-5.55M	USD	1 Quarter
Cash, cash equivalents, and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$88.26M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$88.26M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$95.69M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$95.69M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$84.97M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$84.97M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$90.14M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$90.14M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$88.26M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$88.26M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$95.69M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$95.69M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$84.97M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$84.97M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$90.14M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$90.14M	USD	Point-in-time
Cash paid for interest (net of amounts capitalized)	`InterestPaidNet`	$3.36M	USD	1 Quarter
Cash paid for interest (net of amounts capitalized)	`InterestPaidNet`	$3.36M	USD	1 Quarter
Cash paid for interest (net of amounts capitalized)	`InterestPaidNet`	$4.10M	USD	1 Quarter
Cash paid for interest (net of amounts capitalized)	`InterestPaidNet`	$4.10M	USD	1 Quarter
Accrued payables for investments in utility plant	`CapitalExpendituresIncurredButNotYetPaid`	$48.09M	USD	1 Quarter
Accrued payables for investments in utility plant	`CapitalExpendituresIncurredButNotYetPaid`	$48.09M	USD	1 Quarter
Accrued payables for investments in utility plant	`CapitalExpendituresIncurredButNotYetPaid`	$37.50M	USD	1 Quarter
Accrued payables for investments in utility plant	`CapitalExpendituresIncurredButNotYetPaid`	$37.50M	USD	1 Quarter
Utility plant contribution by developers	`NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1`	$3.71M	USD	1 Quarter
Utility plant contribution by developers	`NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1`	$3.71M	USD	1 Quarter
Utility plant contribution by developers	`NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1`	$8.42M	USD	1 Quarter
Utility plant contribution by developers	`NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1`	$8.42M	USD	1 Quarter

Comprehensive Income 36 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$69.69M	USD	1 Quarter
Net income	`ProfitLoss`	$69.69M	USD	1 Quarter
Unrecoverable pension benefit plan costs, net of taxes	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	-	USD	1 Quarter
Unrecoverable pension benefit plan costs, net of taxes	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	-	USD	1 Quarter
Unrecoverable pension benefit plan costs, net of taxes	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	-	USD	1 Quarter
Unrecoverable pension benefit plan costs, net of taxes	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	-	USD	1 Quarter
Net income	`ProfitLoss`	$13.20M	USD	1 Quarter
Net income	`ProfitLoss`	$13.20M	USD	1 Quarter
Amortization of defined benefit pension plans, net of taxes	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	-	USD	1 Quarter
Amortization of defined benefit pension plans, net of taxes	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	-	USD	1 Quarter
Amortization of defined benefit pension plans, net of taxes	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	$60.00K	USD	1 Quarter
Amortization of defined benefit pension plans, net of taxes	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	$60.00K	USD	1 Quarter
Unrecoverable pension benefit plan costs, net of taxes of $0 and $0, respectively	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-13.66M	USD	1 Quarter
Unrecoverable pension benefit plan costs, net of taxes of $0 and $0, respectively	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-13.66M	USD	1 Quarter
Unrecoverable pension benefit plan costs, net of taxes of $0 and $0, respectively	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Unrecoverable pension benefit plan costs, net of taxes of $0 and $0, respectively	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Amortization of defined benefit pension plans, net of taxes of $60 and $0, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax`	$297.00K	USD	1 Quarter
Amortization of defined benefit pension plans, net of taxes of $60 and $0, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax`	$297.00K	USD	1 Quarter
Amortization of defined benefit pension plans, net of taxes of $60 and $0, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax`	$154.00K	USD	1 Quarter
Amortization of defined benefit pension plans, net of taxes of $60 and $0, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax`	$154.00K	USD	1 Quarter
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$154.00K	USD	1 Quarter
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$154.00K	USD	1 Quarter
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-13.37M	USD	1 Quarter
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-13.37M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$56.32M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$56.32M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$13.36M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$13.36M	USD	1 Quarter
Comprehensive loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-129.00K	USD	1 Quarter
Comprehensive loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-129.00K	USD	1 Quarter
Comprehensive loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-227.00K	USD	1 Quarter
Comprehensive loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-227.00K	USD	1 Quarter
Comprehensive income attributable to California Water Service Group	`ComprehensiveIncomeNetOfTax`	$13.48M	USD	1 Quarter
Comprehensive income attributable to California Water Service Group	`ComprehensiveIncomeNetOfTax`	$13.48M	USD	1 Quarter
Comprehensive income attributable to California Water Service Group	`ComprehensiveIncomeNetOfTax`	$56.55M	USD	1 Quarter
Comprehensive income attributable to California Water Service Group	`ComprehensiveIncomeNetOfTax`	$56.55M	USD	1 Quarter

Data is extracted from SEC EDGAR XBRL filings. Values shown are as reported in the filing.