Public Utilities, Actual Storm Costs

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- Definition

Public Utilities, Approved Plan, Restoration Cost Reduction

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Public Utilities, Approved Plan, Restoration Cost Reduction Period

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- Definition

Public Utilities, Basis Points, Increase, Percentage

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- Definition

Public Utilities, Combined Cycle Plants, in Megawatts

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- Definition

Public Utilities, Estimated Cost of Generation Facilities to be Built

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- Definition

Public Utilities, Investment in Transmission and Distribution

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- Definition

Public Utilities, Number Of Impacted Customers

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- Definition

Public Utilities, Number Of Outages

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- Definition

Public Utilities, Number of Solar Plants Petition for Approval

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- Definition

Unusual or Infrequent Item, or Both, Total Storm Restoration Costs

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- Definition

Utilities, Future Investment in Infrastructure

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- Definition

Carrying amount as of the balance sheet date of the portion of the reserved funds established by a utility from customer payments to cover the repair costs of damages from major storms, which repairs are expected to be incurred beyond one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 980
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-Name Accounting Standards Codification
-Section 25
-Paragraph 1
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- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as noncurrent.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479837/606-10-45-3

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Amount of increase (decrease) in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
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- Definition

Cash received for the settlement of litigation during the current period.

+ References

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-Topic 230
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-Section 45
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- Definition

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

+ References

No definition available.

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- Definition

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

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- Definition

Percentage of public utility's approved return on equity.

+ References

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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

Amount of public utility's interim rate increase (decrease) allowed while waiting final decision of regulatory agency.

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- Definition

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

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Regulatory Matters (Regulatory Matters Narrative - Duke Energy Florida) (Details) customer in Thousands, outage in Millions, customers in Millions										1 Months Ended	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 23, 2024 USD ($)	Jul. 15, 2024 solar_projects	Oct. 16, 2023 USD ($)	Jan. 23, 2023 USD ($)	Oct. 17, 2022 USD ($)	Oct. 04, 2022 USD ($)	Jun. 15, 2022 USD ($)	Jan. 14, 2021 USD ($)	Jul. 01, 2020 USD ($) plant MW	Oct. 31, 2024 USD ($) customers	Mar. 31, 2028 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2026 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Sep. 29, 2023 USD ($)	Aug. 30, 2023 customer	Jun. 30, 2023 USD ($)	Sep. 28, 2022 outage	Sep. 27, 2022 USD ($)	Apr. 11, 2022 USD ($)
Duke Energy Florida
Public Utilities, General Disclosures [Line Items]
Storm reserves												$ 100,000,000		$ 100,000,000
Duke Energy Florida \| Hurricane Milton \| Subsequent event
Public Utilities, General Disclosures [Line Items]
Number of impacted customers \| customers										1
Duke Energy Florida \| Solar Project
Public Utilities, General Disclosures [Line Items]
Estimated cost of facilities									$ 1,000,000,000
Duke Energy Florida \| Minimum \| Hurricane Milton \| Subsequent event
Public Utilities, General Disclosures [Line Items]
Total storm restoration costs										$ 700,000,000
Duke Energy Florida \| Maximum \| Hurricane Milton \| Subsequent event
Public Utilities, General Disclosures [Line Items]
Total storm restoration costs										$ 850,000,000
FPSC \| Duke Energy Florida
Public Utilities, General Disclosures [Line Items]
Number of solar plants \| plant									10
Generation capacity (MW) \| MW									750
2021 Settlement \| FPSC \| Duke Energy Florida
Public Utilities, General Disclosures [Line Items]
Approved rate increase (decrease), amount																			$ 49,000,000	$ 67,000,000
Public utilities, approved equity capital structure, percentage (as a percent)								53.00%
Public utilities, basis points, increase, percentage								0.25%
Contract with customer, asset, after allowance for credit loss, noncurrent							$ 154,000,000	$ 173,000,000				165,000,000		165,000,000
Earnings recognized during period												$ 8,000,000	$ 31,000,000	$ 24,000,000	$ 94,000,000
Proceeds from legal settlements							$ 180,000,000
Requested rate increase (decrease), amount					$ (56,000,000)
Future investment in infrastructure								$ 1,000,000,000
2021 Settlement \| FPSC \| Duke Energy Florida \| US Treasury Securities
Public Utilities, General Disclosures [Line Items]
Public utilities, basis points, increase, percentage								0.50%
2021 Settlement \| FPSC \| Duke Energy Florida \| Minimum
Public Utilities, General Disclosures [Line Items]
Approved return on equity percentage (as a percent)								8.85%
2021 Settlement \| FPSC \| Duke Energy Florida \| Minimum \| US Treasury Securities
Public Utilities, General Disclosures [Line Items]
Approved return on equity percentage (as a percent)								9.85%
2021 Settlement \| FPSC \| Duke Energy Florida \| Maximum
Public Utilities, General Disclosures [Line Items]
Approved return on equity percentage (as a percent)								10.85%
2021 Settlement \| FPSC \| Duke Energy Florida \| Maximum \| US Treasury Securities
Public Utilities, General Disclosures [Line Items]
Approved return on equity percentage (as a percent)								10.10%
2021 Settlement \| FPSC \| Duke Energy Florida \| Weighted Average
Public Utilities, General Disclosures [Line Items]
Approved return on equity percentage (as a percent)								9.85%
2021 Settlement \| FPSC \| Duke Energy Florida \| Forecast
Public Utilities, General Disclosures [Line Items]
Approved rate increase (decrease), amount																		$ 79,000,000
Contract with customer, asset, after allowance for credit loss, noncurrent																		$ 8,000,000
Storm Protection Plan \| FPSC \| Duke Energy Florida
Public Utilities, General Disclosures [Line Items]
Investment in transmission and distribution																										$ 7,000,000,000
Cost reduction to transmission loop						$ 80,000,000
Cost reduction period (in years)						10 years
Hurricane Ian
Public Utilities, General Disclosures [Line Items]
Actual storm costs																					$ 431,000,000
Hurricane Ian \| FPSC \| Duke Energy Florida \| Hurricane Ian
Public Utilities, General Disclosures [Line Items]
Number of outages \| outage																								1.1
Storm reserves																							$ 132,000,000		$ 107,000,000
Interim recovery payments				$ 442,000,000
Hurricane Idalia \| FPSC \| Duke Energy Florida \| Hurricane Ian
Public Utilities, General Disclosures [Line Items]
Interim recovery payments			$ 74,000,000
Hurricane Idalia, Retail Portion \| FPSC \| Duke Energy Florida \| Hurricane Ian
Public Utilities, General Disclosures [Line Items]
Interim recovery payments			92,000,000
Hurricane Idalia \| FPSC \| Duke Energy Florida \| Hurricane Ian
Public Utilities, General Disclosures [Line Items]
Interim recovery payments	$ 98,000,000		$ 166,000,000
Number of impacted customers \| customer																						200
2024 Florida Rate Case \| FPSC \| Duke Energy Florida
Public Utilities, General Disclosures [Line Items]
Number of solar plants \| solar_projects		12
2024 Florida Rate Case \| FPSC \| Duke Energy Florida \| Minimum
Public Utilities, General Disclosures [Line Items]
Approved return on equity percentage (as a percent)		9.30%
2024 Florida Rate Case \| FPSC \| Duke Energy Florida \| Maximum
Public Utilities, General Disclosures [Line Items]
Approved return on equity percentage (as a percent)		11.30%
2024 Florida Rate Case \| FPSC \| Duke Energy Florida \| Weighted Average
Public Utilities, General Disclosures [Line Items]
Approved return on equity percentage (as a percent)		10.30%
Public utilities, approved equity capital structure, percentage (as a percent)		53.00%
2024 Florida Rate Case \| FPSC \| Duke Energy Florida \| Forecast
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount																$ 59,000,000	$ 203,000,000
2024 Florida Rate Case, Solar Facilities \| FPSC \| Duke Energy Florida \| Forecast
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount											$ 58,000,000					$ 71,000,000	$ 12,000,000