Public Utilities, Deferred Compliance Costs, Recovery Period

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- Definition

Public Utilities, Deferred Recovery Compliance Costs

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- Definition

Public Utilities, Property, Plant, And Equipment, Accelerated Amortization Period

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- Definition

Public Utilities, Proposed Rate, Period

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- Definition

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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- Definition

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

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- Definition

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 - 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	Mar. 31, 2025	May 31, 2024	Mar. 31, 2024
PSCSC \| 2022 South Carolina Rate Case
Public Utilities, General Disclosures [Line Items]
Proposed rate period (in years)		2 years
Deferred compliance costs period (in years)		7 years
Deferred compliance costs		$ 108
Accelerated amortization period (in months)		26 months
Amortization period (in years)		20 years
PSCSC \| 2022 South Carolina Rate Case \| Forecast
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount									$ 68
Requested return on equity (as a percent)									11.00%
PSCSC \| 2022 South Carolina Rate Case \| Forecast \| Subsequent event
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount											$ 53
Requested return on equity (as a percent)											8.60%
NCUC \| 2022 North Carolina Rate Case \| Subsequent event
Public Utilities, General Disclosures [Line Items]
Proposed rate period (in years)	3 years
NCUC \| 2022 North Carolina Rate Case \| Forecast
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount					$ 615		$ 138	$ 151
Requested return on equity (as a percent)						16.00%
NCUC \| 2022 North Carolina Rate Case \| Forecast \| Subsequent event
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount										$ 326
FERC \| FERC Return on Equity Complaint, NCEMC
Public Utilities, General Disclosures [Line Items]
Requested return on equity (as a percent)			10.00%	11.00%