Public Utilities, Combined Cycle Plants, in Megawatts

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Public Utilities, Combined Cycle Plants, in Megawatts, Co-Owned

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Public Utilities, Equity Ratio

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Public Utilities, Operating License Extension, Period

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Public Utilities, Proposed Rate, Period

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Public Utilities, Settlement Rate, Amount

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Public Utilities, Settlement Rate, Period

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Percentage of public utility's approved equity to capital, including debt and equity.

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Amount of public utility's approved rate increase (decrease) by regulatory agency.

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Percentage of public utility's approved return on equity.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of public utility's requested rate increase (decrease) with regulatory agency.

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Percentage of public utility's requested rate increase (decrease) with regulatory agency.

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Percentage of public utility's requested return on equity.

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Regulatory Matters (Regulatory Matters Narrative - Duke Energy Progress) (Details) - Duke Energy Progress $ in Millions					1 Months Ended		12 Months Ended			36 Months Ended
	Jun. 12, 2025 USD ($)	Apr. 08, 2025	Feb. 07, 2025 USD ($) MW	Aug. 18, 2023 USD ($)	Apr. 30, 2023	Oct. 31, 2022	Aug. 17, 2026 USD ($)	Aug. 17, 2025 USD ($)	Aug. 17, 2024 USD ($)	Aug. 17, 2026 USD ($)
2022 North Carolina Rate Case \| NCUC
Public Utilities, General Disclosures [Line Items]
Settlement rate, period (in years)				3 years		3 years
Proposed rate period (in years)					3 years
Approved rate increase (decrease), amount									$ 233
Settlement rate, amount				$ 12,200
Approved return on equity percentage (as a percent)				9.80%
Approved equity capital structure, percentage (as a percent)				53.00%
2022 North Carolina Rate Case \| NCUC \| Forecast
Public Utilities, General Disclosures [Line Items]
Approved rate increase (decrease), amount							$ 135	$ 126		$ 494
2022 North Carolina Rate Case, Retail Allocated \| NCUC
Public Utilities, General Disclosures [Line Items]
Settlement rate, amount				$ 3,500
Person County Cycle CPCN Proceeding \| NCUC
Public Utilities, General Disclosures [Line Items]
Generation capacity (MW) \| MW			1,360
Generation capacity, co-owned (MW) \| MW			225
Requested rate increase (decrease), amount			$ 113
Requested rate increase (decrease) (as a percent)			2.60%
Robinson Subsequent License Renewal \| NRC
Public Utilities, General Disclosures [Line Items]
Operating license extension (in years)		20 years
2025 South Carolina Rate Case \| PSCSC
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount	$ 75
Requested rate increase (decrease) (as a percent)	12.10%
Requested return on equity (as a percent)	10.85%
Equity ratio (as a percent)	53.00%