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Public Utilities, Combined Cycle Plants, in Megawatts

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Public Utilities, Proposed Rate, Period

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Public Utilities, Settlement Rate, Amount

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- Definition

Face (par) amount of debt instrument at time of issuance.

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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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The amount of operating expenses for the period that are associated with the utility's normal revenue producing operation; including selling, general, and administrative expenses, costs incurred for routine plant repairs and maintenance, and operations.

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Regulatory Matters (Regulatory Matters Narrative - Duke Energy Progress) (Details)				3 Months Ended		7 Months Ended	11 Months Ended	12 Months Ended
	Mar. 28, 2024 USD ($) MW	Aug. 18, 2023 USD ($)	Apr. 26, 2023	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2025 USD ($)	Apr. 30, 2024 USD ($)	Aug. 17, 2027 USD ($)	Aug. 17, 2026 USD ($)	May 31, 2026 USD ($)	Aug. 17, 2025 USD ($)	May 31, 2025 USD ($)	Aug. 17, 2024 USD ($)	Jan. 01, 2026 MW	Apr. 25, 2024 USD ($)
Public Utilities, General Disclosures [Line Items]
Impairment of assets and other charges				$ 1,000,000	$ 8,000,000
Operation, maintenance and other				1,379,000,000	1,310,000,000
Debt issuances				3,475,000,000
Duke Energy Progress
Public Utilities, General Disclosures [Line Items]
Impairment of assets and other charges				0	4,000,000
Operation, maintenance and other				375,000,000	$ 350,000,000
Debt issuances				$ 500,000,000
Duke Energy Progress \| Subsequent event \| Storm Recovery Bonds
Public Utilities, General Disclosures [Line Items]
Debt issuances															$ 177,000,000
Duke Energy Progress \| Subsequent event \| 5.404% Storm Recovery Bonds \| Storm Recovery Bonds
Public Utilities, General Disclosures [Line Items]
Debt issuances							$ 177,000,000
2022 North Carolina Rate Case \| NCUC \| Duke Energy Progress
Public Utilities, General Disclosures [Line Items]
Proposed rate period (in years)			3 years
Settlement rate, amount		$ 12,200,000,000
Settlement rate, period (in years)		3 years
Approved return on equity percentage (as a percent)		9.80%
2022 North Carolina Rate Case \| NCUC \| Duke Energy Progress \| Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity percentage (as a percent)		53.00%
2022 North Carolina Rate Case \| NCUC \| Duke Energy Progress \| Forecast
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount						$ 615,000,000	$ 326,000,000			$ 138,000,000		$ 151,000,000
Approved rate increase (decrease), amount								$ 494,000,000	$ 135,000,000		$ 126,000,000		$ 233,000,000
2022 North Carolina Rate Case, Retail Allocated \| NCUC \| Duke Energy Progress
Public Utilities, General Disclosures [Line Items]
Settlement rate, amount		$ 3,500,000,000
Person County Cycle CPCN Proceeding \| NCUC \| Duke Energy Progress
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount	$ 98,000,000
Generation capacity (MW) \| MW	1,360
Requested rate increase (decrease) (as a percent)	2.60%
Person County Cycle CPCN Proceeding \| NCUC \| NCEMC \| Forecast
Public Utilities, General Disclosures [Line Items]
Generation capacity (MW) \| MW														225
Person County Cycle CPCN Proceeding \| NCEMC \| Duke Energy Progress \| Forecast
Public Utilities, General Disclosures [Line Items]
Generation capacity (MW) \| MW														1,135