Public Utilities, Deferred Compliance Costs, Non-Recovery

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Public Utilities, Deferred Compliance Costs, Recovery Period

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- Definition

Public Utilities, Proposed Rate, Period

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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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Useful life of other property, plant and equipment (PPE) owned by public utility, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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 return on equity.

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Regulatory Matters (Duke Energy Progress Narrative) (Details) - USD ($) $ in Millions					7 Months Ended	12 Months Ended
	Oct. 06, 2022	Sep. 01, 2022	Jun. 16, 2022	Oct. 16, 2020	Dec. 31, 2025	May 31, 2027	May 31, 2026	May 31, 2025	May 31, 2024	Dec. 31, 2022	Dec. 31, 2021
Public Utilities, General Disclosures [Line Items]
Other, estimated useful life, in years										15 years	14 years
Duke Energy Progress \| PSCSC \| 2022 South Carolina Rate Case
Public Utilities, General Disclosures [Line Items]
Approved rate increase (decrease) amount by state commission		$ 52
Duke Energy Progress \| PSCSC \| 2022 South Carolina Rate Case, Retail Rate Case
Public Utilities, General Disclosures [Line Items]
Deferred compliance costs period (in years)		33 months
Approved return on equity, percentage		9.60%
Approved rate increase (decrease) amount by state commission		$ 36
Duke Energy Progress \| PSCSC \| 2022 South Carolina Rate Case, Retail Rate Case \| Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity, percentage		52.43%
Duke Energy Progress \| PSCSC \| 2022 South Carolina Rate Case, Retail Rate Case \| Debt
Public Utilities, General Disclosures [Line Items]
Approved return on equity, percentage		47.57%
Duke Energy Progress \| PSCSC \| 2022 South Carolina Rate Case, Coal Ash Basin Closure Costs
Public Utilities, General Disclosures [Line Items]
Deferred compliance costs period (in years)		7 years
Deferred costs not recovering		$ 50
Duke Energy Progress \| NCUC \| 2022 North Carolina Rate Case
Public Utilities, General Disclosures [Line Items]
Proposed rate period (in years)	3 years
Duke Energy Progress \| NCUC \| 2022 North Carolina Rate Case \| Forecast
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease)					$ 615		$ 138	$ 151	$ 326
Requested return on equity, percentage						16.00%
Duke Energy Progress \| FERC \| FERC Return on Equity Complaint, NCEMC
Public Utilities, General Disclosures [Line Items]
Approved return on equity, percentage			10.00%	11.00%