Percentage of Total Capital allowed as distribution.

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Total expenditures for long-lived assets additions other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets of the reportable segment; if the amount: (a) is included in the determination of segment assets reviewed by the chief operating decision maker or (b) is otherwise regularly provided to the chief operating decision maker, even if not included in the determination of segment assets.

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Public Utilities, Deferred Storm Costs

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- Definition

Public Utilities, Number Of Customers Impacted

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- Definition

Regulatory Matters, Percentage Of Solar Storage In Long-Term Purchase Power Agreements

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- Definition

Regulatory Matters, Percentage, Reduction In CO2 Emissions

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- Definition

Required minimum equity capital structure percent

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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)
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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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- Definition

The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 340
-Section 50
-Paragraph 1
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Regulatory Matters (Duke Energy Narrative) (Details) customer in Thousands, $ in Millions	1 Months Ended	12 Months Ended
	Oct. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 30, 2022	Sep. 30, 2022 customer	Aug. 05, 2022 USD ($)	Oct. 13, 2021
Public Utilities, General Disclosures [Line Items]
Capital expenditures		$ 11,419	$ 9,752	$ 10,421
Regulatory assets		$ 18,130	14,637
Storm Cost Securitization Legislation \| NCUC
Public Utilities, General Disclosures [Line Items]
Reduction in CO2 emissions (as a percent)								70.00%
Solar storage as long term purchase agreements (as a percent)					45.00%
Duke Energy Ohio
Public Utilities, General Disclosures [Line Items]
Limit of total capital (as a percent)		30.00%
Capital expenditures		$ 850	848	$ 834
Regulatory assets		$ 684	707
Duke Energy Kentucky
Public Utilities, General Disclosures [Line Items]
Required minimum equity capital structure (as a percent)		35.00%
Duke Energy Carolinas and Duke Energy Progress \| Natural Disasters and Other Casualty Events
Public Utilities, General Disclosures [Line Items]
Number of customers impacted \| customer						950
Duke Energy Carolinas and Duke Energy Progress \| Natural Disasters and Other Casualty Events \| Minimum
Public Utilities, General Disclosures [Line Items]
Storm costs incurred	$ 100
Capital expenditures	9
Regulatory assets	83
Duke Energy Progress
Public Utilities, General Disclosures [Line Items]
Regulatory assets		$ 5,414	4,651
Duke Energy Progress \| Storm Cost Securitization Legislation \| PSCSC
Public Utilities, General Disclosures [Line Items]
Deferred storm costs							$ 223
Duke Energy Progress \| Natural Disasters and Other Casualty Events \| Minimum
Public Utilities, General Disclosures [Line Items]
Regulatory assets	43
Duke Energy Carolinas
Public Utilities, General Disclosures [Line Items]
Regulatory assets		$ 5,388	$ 3,479
Duke Energy Carolinas \| Natural Disasters and Other Casualty Events \| Minimum
Public Utilities, General Disclosures [Line Items]
Regulatory assets	$ 40