XML 72 R61.htm IDEA: XBRL DOCUMENT
v3.25.3

Rate Activity (Narrative) (Details) $ in Thousands |  |  |  |  |  |  |  |  |  | 9 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 30, 2025 USD ($) | Jul. 01, 2025 USD ($) | Jun. 30, 2025 USD ($) | Jun. 20, 2025 USD ($) | Apr. 30, 2025 USD ($) | Feb. 07, 2025 USD ($) | Nov. 21, 2024 USD ($) | Oct. 09, 2024 USD ($) | Sep. 12, 2024 USD ($) | Sep. 30, 2025 USD ($) item
Pennsylvania and Ohio [Member] | Regulated Water And Wastewater [Member] |  |  |  |  |  |  |  |  |  |
Water And Wastewater Rates [Line Items] |  |  |  |  |  |  |  |  |  |
Infrastructure rehabilitation surcharges designed to increase total operating revenues on an annual basis |  |  |  |  |  |  |  |  |  | $ 10,808
North Carolina [Member] | Regulated Water And Wastewater [Member] |  |  |  |  |  |  |  |  |  |
Water And Wastewater Rates [Line Items] |  |  |  |  |  |  |  |  |  |
Distribution system improvement charges reset level upon new base rates |  |  |  |  |  |  |  |  |  | 6,371
Illinois [Member] |  |  |  |  |  |  |  |  |  |
Water And Wastewater Rates [Line Items] |  |  |  |  |  |  |  |  |  |
Base rate increase (decrease) |  |  |  |  |  |  | $ 11,632 |  |  |
Base rate increase designed to increase total operating revenues on an annual basis |  |  |  |  |  |  | 11.40% |  |  |
New Jersey [Member] |  |  |  |  |  |  |  |  |  |
Water And Wastewater Rates [Line Items] |  |  |  |  |  |  |  |  |  |
Customer surcharge period |  |  |  |  |  |  |  | 3 years |  |
Service line replacement costs |  |  |  |  |  |  |  | $ 11,535 |  |
Base rate increase (decrease) |  |  |  |  |  |  |  | $ 2,250 |  |
New Jersey [Member] | Regulated Water And Wastewater [Member] |  |  |  |  |  |  |  |  |  |
Water And Wastewater Rates [Line Items] |  |  |  |  |  |  |  |  |  |
Infrastructure rehabilitation surcharges designed to increase total operating revenues on an annual basis |  |  |  |  |  |  |  |  |  | $ 2,468
Texas [Member] | Regulated Water And Wastewater [Member] |  |  |  |  |  |  |  |  |  |
Water And Wastewater Rates [Line Items] |  |  |  |  |  |  |  |  |  |
Base rate increase (decrease) |  |  |  | $ 29,149 |  |  |  |  |  |
Virginia [Member] |  |  |  |  |  |  |  |  |  |
Water And Wastewater Rates [Line Items] |  |  |  |  |  |  |  |  |  |
Base rate increase (decrease) | $ 7,927 |  |  |  |  |  |  |  |  |
Virginia [Member] | Regulated Natural Gas [Member] |  |  |  |  |  |  |  |  |  |
Water And Wastewater Rates [Line Items] |  |  |  |  |  |  |  |  |  |
Base rate increase designed to increase total operating revenues on an annual basis |  |  |  |  |  |  |  |  | 23.80% |
Distribution system improvement charges reset level upon new base rates |  |  |  |  |  |  |  |  | $ 5,490 |
Pennsylvania [Member] | Regulated Water And Wastewater [Member] |  |  |  |  |  |  |  |  |  |
Water And Wastewater Rates [Line Items] |  |  |  |  |  |  |  |  |  |
Allowed base rate increase, amount designed to increase annual operating revenues |  |  |  |  |  | $ 73,000 |  |  |  |
Base rate increase (decrease) |  |  |  |  |  | $ 110,940 |  |  |  |
Base rate increase designed to increase total operating revenues on an annual basis |  |  |  |  |  | 6.73% |  |  |  |
Distribution system improvement charges reset level upon new base rates |  |  |  |  |  | $ 37,940 |  |  |  |
Pennsylvania [Member] | Regulated Natural Gas [Member] |  |  |  |  |  |  |  |  |  |
Water And Wastewater Rates [Line Items] |  |  |  |  |  |  |  |  |  |
Change in other operating revenue, annually |  |  |  |  |  |  |  |  | 3,000 |
Distribution system improvement charges |  |  |  |  |  |  |  |  | 21,000 |
Base rate increase (decrease) |  |  |  |  |  |  |  |  | $ 111,000 |
Base rate increase designed to increase total operating revenues on an annual basis |  |  |  |  |  |  |  |  | 11.10% |
Distribution system improvement charges reset level upon new base rates |  |  |  |  |  |  |  |  | $ 93,000 |
Ohio [Member] | Regulated Water And Wastewater [Member] |  |  |  |  |  |  |  |  |  |
Water And Wastewater Rates [Line Items] |  |  |  |  |  |  |  |  |  |
Base rate increase (decrease) |  |  | $ 14,653 |  |  |  |  |  |  |
Ohio [Member] | Regulated Water [Member] |  |  |  |  |  |  |  |  |  |
Water And Wastewater Rates [Line Items] |  |  |  |  |  |  |  |  |  |
Number of operating divisions | item |  |  |  |  |  |  |  |  |  | 3
Kentucky [Member] | Regulated Natural Gas [Member] |  |  |  |  |  |  |  |  |  |
Water And Wastewater Rates [Line Items] |  |  |  |  |  |  |  |  |  |
Allowed base rate increase, amount designed to increase annual operating revenues |  | $ 7,700 |  |  |  |  |  |  |  |
Infrastructure rehabilitation surcharges designed to increase total operating revenues on an annual basis |  |  |  |  |  |  |  |  |  | $ 542
Base rate increase designed to increase total operating revenues on an annual basis |  | 11.20% |  |  |  |  |  |  |  |
Year 1 [Member] | North Carolina [Member] |  |  |  |  |  |  |  |  |  |
Water And Wastewater Rates [Line Items] |  |  |  |  |  |  |  |  |  |
Base rate increase (decrease) |  |  |  |  | $ 32,847 |  |  |  |  |
Year 2 [Member] | North Carolina [Member] |  |  |  |  |  |  |  |  |  |
Water And Wastewater Rates [Line Items] |  |  |  |  |  |  |  |  |  |
Base rate increase (decrease) |  |  |  |  | 5,915 |  |  |  |  |
Year 3 [Member] | North Carolina [Member] |  |  |  |  |  |  |  |  |  |
Water And Wastewater Rates [Line Items] |  |  |  |  |  |  |  |  |  |
Base rate increase (decrease) |  |  |  |  | $ 6,000 |  |  |  |  |

X
- Definition Amount of public utility's approved rate increase (decrease) by regulatory agency. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesApprovedRateIncreaseDecreaseAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Allowed Base Rate Increase, Amount Designed To Increase Annual Operating Revenues + References No definition available. + Details
Name: | wtrg_AllowedBaseRateIncreaseAmountDesignedToIncreaseAnnualOperatingRevenues
Namespace Prefix: | wtrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Base rate increase designed to increase total operating revenues on an annual basis + References No definition available. + Details
Name: | wtrg_BaseRateIncreaseDesignedToIncreaseTotalOperatingRevenuesOnAnnualBasis
Namespace Prefix: | wtrg_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Change in other operating revenue, annually + References No definition available. + Details
Name: | wtrg_ChangeInOtherOperatingRevenueAnnually
Namespace Prefix: | wtrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Customer surcharge period + References No definition available. + Details
Name: | wtrg_CustomerSurchargePeriod
Namespace Prefix: | wtrg_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Distribution System Improvement Charges + References No definition available. + Details
Name: | wtrg_DistributionSystemImprovementCharges
Namespace Prefix: | wtrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Distribution System Improvement Charges Reset Level Upon New Base Rates + References No definition available. + Details
Name: | wtrg_DistributionSystemImprovementChargesResetLevelUponNewBaseRates
Namespace Prefix: | wtrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Infrastructure Rehabiliation Surcharges Designed To Increase Total Operating Revenue On An Annual Basis + References No definition available. + Details
Name: | wtrg_InfrastructureRehabiliationSurchargesDesignedToIncreaseTotalOperatingRevenueOnAnnualBasis
Namespace Prefix: | wtrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of operating divisions + References No definition available. + Details
Name: | wtrg_NumberOfOperatingDivision
Namespace Prefix: | wtrg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Service line replacement costs. + References No definition available. + Details
Name: | wtrg_ServiceLineReplacementCosts
Namespace Prefix: | wtrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Water And Wastewater Rates [Line Items] + References No definition available. + Details
Name: | wtrg_WaterAndWastewaterRatesLineItems
Namespace Prefix: | wtrg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_StatementGeographicalAxis=wtrg_PennsylvaniaAndOhioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=wtrg_RegulatedWaterAndWastewaterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_NC
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_IL
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_NJ
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_TX
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_VA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=wtrg_NaturalGasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_PA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_OH
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=wtrg_WaterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_KY
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=wtrg_Year1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=wtrg_Year2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=wtrg_Year3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |