Public Utilities, Approved Return on Equity, Step One Estimated Percentage

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Public Utilities, Approved Return on Equity, Step Two Estimated Percentage

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- Definition

Public Utilities, Disclosure Of Rate Matters, Rate Base

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- Definition

Public Utilities, Disclosure Of Rate Matters, Rate Base Reduction due to Approved Return on Equity, Percent

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- Definition

Public Utilities, Disclosure Of Rate Matters, Rate Base Reduction due to Depreciation Methodology, Percent

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Public Utilities, Disclosure Of Rate Matters, Rate Base Reduction due to Earnings Adjustments, Percent

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- Definition

Public Utilities, Disclosure Of Rate Matters, Reduction of Rate Base

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- Definition

Public Utilities, Requested Rate Increase (Decrease), Percentage, Net Of Tax

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Percentage of public utility's approved equity to capital, including debt and equity.

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

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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 (Regulatory Matters Narrative - Duke Energy Indiana) (Details) - Duke Energy Indiana - IURC - Indiana rate case 2019 - USD ($) $ in Millions	Jun. 29, 2020	Dec. 04, 2019	Jul. 02, 2019
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount			$ 395
Requested rate increase, percentage, net of tax		15.60%
Requested rate increase (decrease), amended amount		$ 396
Approved rate increase, amount	$ 146
Public utilities, approved rate increase (decrease), percentage	5.70%
Approved return on equity percentage	9.70%
Public utilities, approved equity capital structure, percentage	53.00%
Rate base	$ 10,200
Reduction of requested rate base	$ 200
Reduction due to depreciation methodology	50.00%
Reduction due to approved return on equity	20.00%
Requested return on equity, percent	10.40%
Reduction due to earnings adjustments	20.00%
Estimated step one rate	75.00%
Estimated step two rate	25.00%