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Period over which Distribution Adjustment Charge-related qualified remediation costs are amortized.

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Period RIE Environmental Remediation Costs To Be Incurred Over

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Rhode Island Division Of Public Utilities And Carriers Amount To Be Refunded To The RIE Energy Efficiency Program

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Total costs accrued as of the balance sheet date for environmental loss contingencies.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
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-Name Accounting Standards Codification
-Section 50
-Paragraph 1
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Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 410
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
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-Publisher FASB
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Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 410
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-Name Accounting Standards Codification
-Section 50
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Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Topic 410
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
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Undiscounted amount of the accrual for environmental loss contingencies.

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Amount of expense recovery for known and estimated future costs arising from requirement to perform environmental remediation.

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Reference 1: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 410
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Commitments and Contingencies (Environmental Matter and Other) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Mar. 04, 2025	Feb. 21, 2025	Dec. 31, 2024
Environmental Matters - Superfund And Other Remediation (Numeric) [Abstract]
Period RIE Environmental Remediation Costs To Be Incurred Over	30 years
Period Over Which Distribution Adjustment Charge-related Costs Are amortized	10 years
Rhode Island Division Of Public Utilities And Carriers Amount To Be Refunded To The RIE Energy Efficiency Program		$ 10	$ 12
Electric Rates [Member]
Environmental Matters - Superfund And Other Remediation (Numeric) [Abstract]
Environmental Costs Recognized, Recovery Credited to Expense	$ 3
Gas Rates [Member]
Environmental Matters - Superfund And Other Remediation (Numeric) [Abstract]
Environmental Costs Recognized, Recovery Credited to Expense	1
RIE Environmental Remediation
Environmental Matters - Superfund And Other Remediation (Numeric) [Abstract]
Accrual for Environmental Loss Contingencies, Gross	98			$ 98
PPL Electric [Member] \| PPL Electric Additional Sites [Member]
Environmental Matters - Superfund And Other Remediation (Numeric) [Abstract]
Environmental site accrual	8			8
PPL Electric Utilities Corp [Member] \| PPL Electric Additional Sites [Member]
Environmental Matters - Superfund And Other Remediation (Numeric) [Abstract]
Environmental site accrual	$ 8			$ 8