Public Utilities, De Minimis Threshold, Percent

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- Definition

Public Utilities, Equity Ratio

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

Percentage of public utility's approved return on equity.

+ References

No definition available.

+ Details

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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.

+ References

No definition available.

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

Percentage of public utility's requested return on equity.

+ References

No definition available.

+ Details

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- Definition

The amount for the individual regulatory current liability as itemized in a table of regulatory current liabilities as of the end of the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 980
-SubTopic 405
-Name Accounting Standards Codification
-Section 25
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477571/980-405-25-1

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Regulatory Matters (Regulatory Matters Narrative - Duke Energy Ohio) (Details) - USD ($) $ in Millions			1 Months Ended
	Mar. 30, 2026	Oct. 12, 2023	Apr. 30, 2023	Mar. 31, 2026	Mar. 06, 2026	Dec. 31, 2025
Public Utilities, General Disclosures [Line Items]
Regulatory liabilities				$ 1,554		$ 1,271
Duke Energy Ohio
Public Utilities, General Disclosures [Line Items]
Regulatory liabilities				$ 79		$ 57
Duke Energy Ohio Gas Base Rate Case \| PUCO \| Duke Energy Ohio
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount			$ 32
Equity ratio (as a percent)			52.32%
Requested return on equity (as a percent)			9.60%
Duke Energy Ohio 2026 Electric Rate Case \| PUCO \| Duke Energy Ohio
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount	$ 90
Equity ratio (as a percent)	52.66%
Requested return on equity (as a percent)	10.50%
Transmission Planning Proceedings \| Federal Energy Regulatory Commission (FERC) \| Duke Energy Ohio
Public Utilities, General Disclosures [Line Items]
De minimis threshold (percent)					1.00%
Duke Energy Kentucky Electric Base Rate Case \| KPSC \| Duke Energy Ohio
Public Utilities, General Disclosures [Line Items]
Equity ratio (as a percent)		52.145%
Approved rate increase (decrease), amount		$ 48
Duke Energy Kentucky Electric Base Rate Case, Electric Base Rates \| KPSC \| Duke Energy Ohio
Public Utilities, General Disclosures [Line Items]
Approved return on equity percentage (as a percent)		9.75%
Duke Energy Kentucky Electric Base Rate Case, Electric Riders \| KPSC \| Duke Energy Ohio
Public Utilities, General Disclosures [Line Items]
Approved return on equity percentage (as a percent)		9.65%