Public Utilities, Estimated Capital Cost Excluding AFUDC

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Public Utilities, Number of Conditions on Construction

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- Definition

Public Utilities, Number of Nuclear Generating Facilities Eligible for Funding

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- Definition

Public Utilities, Number of Orders Issued on Application for Rehearing

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- Definition

Public Utilities, Shared Savings Cap

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- Definition

Site Contingency, Environmental Remediation, Number of Sites

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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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- Definition

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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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382

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Regulatory Matters (Regulatory Matters Narrative - Duke Energy Ohio) (Details) $ in Millions		6 Months Ended
	Jun. 01, 2021 USD ($)	Jun. 30, 2021 USD ($) site	Nov. 18, 2020 USD ($) order	Jul. 23, 2020 USD ($)	Mar. 31, 2020 USD ($)	Jan. 01, 2020 plant	Nov. 21, 2019 condition	Jul. 12, 2019 USD ($)	Mar. 29, 2019 USD ($)	Sep. 28, 2018 USD ($)
Duke Energy Ohio
Public Utilities, General Disclosures [Line Items]
Number of nuclear generating facilities eligible for funding \| plant						2
Duke Energy Ohio \| Energy Efficiency Cost Recovery
Public Utilities, General Disclosures [Line Items]
Number of orders issued on application for rehearing \| order			2
Shared savings cap			$ 8
Duke Energy Ohio \| Natural Gas Pipeline extension \| OPSB \| Minimum
Public Utilities, General Disclosures [Line Items]
Estimated capital cost excluding AFUDC		$ 163
Number of conditions on construction \| condition							41
Duke Energy Ohio \| Natural Gas Pipeline extension \| OPSB \| Maximum
Public Utilities, General Disclosures [Line Items]
Estimated capital cost excluding AFUDC		$ 245
Duke Energy Ohio \| MGP Cost Recovery - 2009 Through 2012 \| PUCO
Public Utilities, General Disclosures [Line Items]
Number of environmental remediation sites \| site		2
Regulatory assets		$ 55
Duke Energy Ohio \| MGP Cost Recovery - 2013 Through 2017 \| PUCO
Public Utilities, General Disclosures [Line Items]
Regulatory assets										$ 26
Duke Energy Ohio \| MGP Cost Recovery - 2013 Through 2017 \| PUCO \| MGP Costs - regulatory disallowance
Public Utilities, General Disclosures [Line Items]
Regulatory assets										$ 12
Duke Energy Ohio \| MGP Cost Recovery - 2018 \| PUCO
Public Utilities, General Disclosures [Line Items]
Regulatory assets									$ 20
Duke Energy Ohio \| MGP Cost Recovery - 2018 \| PUCO \| MGP Costs - regulatory disallowance
Public Utilities, General Disclosures [Line Items]
Regulatory assets								$ 11
Duke Energy Ohio \| MGP Cost Recovery - 2019 \| PUCO
Public Utilities, General Disclosures [Line Items]
Regulatory assets					$ 39
Duke Energy Ohio \| MGP Cost Recovery - 2019 \| PUCO \| MGP Costs - regulatory disallowance
Public Utilities, General Disclosures [Line Items]
Regulatory assets				$ 4
Duke Energy Kentucky \| Duke Energy Kentucky Gas Base Rate Case \| KPSC
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount	$ 15
Requested rate increase, percentage	13.00%