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Derivatives and Hedging (Notional Amounts of Derivative Instruments) (Details) Mcf in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) GWh Mcf	Dec. 31, 2023 USD ($) GWh Mcf
Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 6,027	$ 5,027
Interest Rate Contracts | Designated contracts | Cash flow hedges
Derivative [Line Items]
Pay Notional	2,825	2,300
Interest Rate Contracts | Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 3,202	$ 2,727
Commodity contracts | Electricity (GWh)
Derivative [Line Items]
Notional amount, energy measure, electricity (in GWh) | GWh	12,229	13,608
Commodity contracts | Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume of natural gas (in millions of Dth) | Mcf	779	846
Duke Energy Carolinas | Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 1,150	$ 1,050
Duke Energy Carolinas | Interest Rate Contracts | Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 1,150	$ 1,050
Duke Energy Carolinas | Commodity contracts | Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume of natural gas (in millions of Dth) | Mcf	276	279
Progress Energy | Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 1,775	$ 1,250
Progress Energy | Interest Rate Contracts | Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 1,775	$ 1,250
Progress Energy | Commodity contracts | Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume of natural gas (in millions of Dth) | Mcf	246	274
Duke Energy Progress | Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 1,125	$ 925
Duke Energy Progress | Interest Rate Contracts | Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 1,125	$ 925
Duke Energy Progress | Commodity contracts | Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume of natural gas (in millions of Dth) | Mcf	246	274
Duke Energy Florida | Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 650	$ 325
Duke Energy Florida | Interest Rate Contracts | Undesignated contracts
Derivative [Line Items]
Pay Notional	650	325
Duke Energy Ohio | Interest Rate Contracts
Derivative [Line Items]
Pay Notional	27	27
Duke Energy Ohio | Interest Rate Contracts | Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 27	$ 27
Duke Energy Ohio | Commodity contracts | Electricity (GWh)
Derivative [Line Items]
Notional amount, energy measure, electricity (in GWh) | GWh	1,287	1,616
Duke Energy Indiana | Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 250	$ 400
Duke Energy Indiana | Interest Rate Contracts | Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 250	$ 400
Duke Energy Indiana | Commodity contracts | Electricity (GWh)
Derivative [Line Items]
Notional amount, energy measure, electricity (in GWh) | GWh	10,942	11,992
Duke Energy Indiana | Commodity contracts | Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume of natural gas (in millions of Dth) | Mcf	32	30
Piedmont | Commodity contracts | Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume of natural gas (in millions of Dth) | Mcf	225	263

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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480237/815-40-50-5

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A

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