Approved Deferred Storm and Property Reserve Deficiency

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- Definition

Public Utilities, Property, Plant and Equipment Estimated Amount of Investment

+ References

No definition available.

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-12

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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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No definition available.

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- Definition

Percentage of public utility's approved return on equity.

+ References

No definition available.

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- Definition

Describes all of the specific events that have or may impact rates and amortization of regulatory assets and liabilities (for example, pending or recently concluded regulatory proceedings, environmental requirements). Specifics may include quantifications related to rates, costs, and earnings. Events may relate to rate moratoriums or price caps.

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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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No definition available.

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- Definition

Period end book value of accumulated depreciation on property, plant and equipment (PPE) that is owned by the regulated operations of the public utility.

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No definition available.

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Period end amount of total gross PPE.

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No definition available.

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- Definition

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

+ References

No definition available.

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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

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Remaining recovery period of regulatory assets for which no return on investment during recovery period is provided, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 980
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- Definition

A noncash adjustment to the provision established for storm damage by an oil, gas, or utility company.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
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-Paragraph 28
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- Definition

Amount of operating expense for depreciation and amortization of regulated operation.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(b))
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Regulatory Assets and Liabilities - Florida Electric Utility (Narrative) (Details) $ in Millions, $ in Millions				1 Months Ended	3 Months Ended	12 Months Ended
	Nov. 17, 2023 USD ($)	Jan. 23, 2023 USD ($)	Jan. 19, 2022 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2023 CAD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 CAD ($)	Aug. 16, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Public Utilities, General Disclosures [Line Items]
State income tax						11.00%	11.00%	15.00%
Utilities Operating Expense, Depreciation and Amortization						$ 1,049		$ 952
Regulatory Assets						3,105		3,620
Florida Electric Utility \| Operating
Public Utilities, General Disclosures [Line Items]
Utilities Operating Expense, Depreciation and Amortization						571		507
Cost Recovery Clauses
Public Utilities, General Disclosures [Line Items]
Regulatory Assets						151		707
Restoration Costs
Public Utilities, General Disclosures [Line Items]
Regulatory Assets						26		27
Storm cost recovery clauses
Public Utilities, General Disclosures [Line Items]
Regulatory Assets						$ 52		$ 138
Tampa Electric
Public Utilities, General Disclosures [Line Items]
Storm Damage Provision				$ 119			$ 29
Recovery Period						15 years
Tampa Electric \| Big Bend Modernization Project \| Unit 1 components \| Florida Electric Utility \| Operating
Public Utilities, General Disclosures [Line Items]
Estimated Amount of Investment										$ 876
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation										$ 91
Tampa Electric \| Storm cost recovery clauses
Public Utilities, General Disclosures [Line Items]
Storm Damage Provision					$ 35
Regulatory Assets		$ 131							$ 134
Approved reserve level		56
Tampa Electric \| Florida Public Service Commission
Public Utilities, General Disclosures [Line Items]
Recovery Period											15 years
Tampa Electric \| Florida Public Service Commission \| Florida Electric Utility \| Operating
Public Utilities, General Disclosures [Line Items]
Public Utilities, Disclosure of Rate Matters						TEC is regulated by the FPSC and is also subject to regulation by the Federal Energy Regulatory Commission. The FPSC sets rates at a level that allows utilities such as TEC to collect total revenues or revenue requirements equal to their cost of providing service, plus an appropriate return on invested capital. Base rates are determined in FPSC rate setting hearings which can occur at the initiative of TEC, the FPSC or other interested parties.	TEC is regulated by the FPSC and is also subject to regulation by the Federal Energy Regulatory Commission. The FPSC sets rates at a level that allows utilities such as TEC to collect total revenues or revenue requirements equal to their cost of providing service, plus an appropriate return on invested capital. Base rates are determined in FPSC rate setting hearings which can occur at the initiative of TEC, the FPSC or other interested parties.
Allowed equity capital structure						54.00%	54.00%
Public Utilities, Approved Rate Increase (Decrease), Amount	$ (22)
Public Utilities, Requested Rate Increase (Decrease), Amount			$ 169
Tampa Electric \| Florida Public Service Commission \| Additional adjustment for 2026 \| Florida Electric Utility \| Operating
Public Utilities, General Disclosures [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount							$ (100)
Tampa Electric \| Florida Public Service Commission \| Additional adjustment for 2027 \| Florida Electric Utility \| Operating
Public Utilities, General Disclosures [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount							$ (70)
Tampa Electric \| Florida Public Service Commission \| Cost Recovery Clauses \| Florida Electric Utility \| Operating
Public Utilities, General Disclosures [Line Items]
Approved regulated return on equity						10.20%	10.20%	10.20%
Public Utilities, Requested Rate Increase (Decrease), Amount		$ 518
Recovery Period		21 months
Tampa Electric \| Florida Public Service Commission \| Big Bend Modernization Project \| Unit 1 components \| Florida Electric Utility \| Operating
Public Utilities, General Disclosures [Line Items]
Public Utilities, Property, Plant and Equipment, Plant in Service											$ 636
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation											$ 267
Tampa Electric \| Florida Public Service Commission \| Projected Fuel Costs \| Florida Electric Utility \| Operating
Public Utilities, General Disclosures [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount		$ (170)
Tampa Electric \| Florida Public Service Commission \| Range, Minimum \| Florida Electric Utility \| Operating
Public Utilities, General Disclosures [Line Items]
Approved regulated return on equity						9.25%	9.25%	9.25%
Tampa Electric \| Florida Public Service Commission \| Range, Minimum \| Base rate effective January 2025 \| Florida Electric Utility \| Operating
Public Utilities, General Disclosures [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount							$ (290)
Tampa Electric \| Florida Public Service Commission \| Range, Maximum \| Florida Electric Utility \| Operating
Public Utilities, General Disclosures [Line Items]
Approved regulated return on equity						11.25%	11.25%	11.25%
Tampa Electric \| Florida Public Service Commission \| Range, Maximum \| Base rate effective January 2025 \| Florida Electric Utility \| Operating
Public Utilities, General Disclosures [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount							$ (320)