Income Taxes - Narrative (Details) - USD ($) $ in Millions	Aug. 16, 2022	Sep. 30, 2023
Income Tax Additional Narrative Information [Line Items]
Income taxes receivable, current		$ 15
Notes payable, current		22
Notes payable, noncurrent		509
Tax credit carryforward, valuation allowance		0
US Treasury (UST) Interest Rate
Income Tax Additional Narrative Information [Line Items]
Effective income tax rate reconciliation, change in enacted tax rate, percent	15.00%
State and Local Jurisdiction \| Atlantic City Electric Company
Income Tax Additional Narrative Information [Line Items]
Unrecognized state tax benefits		$ 14

Income Tax Additional Disclosure [Line Items]

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- Definition

Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the income tax rates.

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Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes.

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Carrying value as of the balance sheet date of notes payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer.

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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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- Definition

Amount of valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from tax credit carryforwards for which it is more likely than not that a tax benefit will not be realized.

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