Derivatives and Hedging (Notional Amounts of Derivative Instruments) (Details) Mcf in Millions, $ in Millions	12 Months Ended
Dec. 31, 2023 USD ($) GWh Mcf	Dec. 31, 2022 USD ($) GWh Mcf
Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 5,027	$ 2,877
Interest Rate Contracts \| Designated contracts \| Cash flow hedges
Derivative [Line Items]
Pay Notional	2,300	500
Interest Rate Contracts \| Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 2,727	$ 2,377
Commodity contracts \| Electricity (GWh)
Derivative [Line Items]
Notional amount, energy measure, electricity (in GWh) \| GWh	13,608	14,086
Commodity contracts \| Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume of natural gas (in millions of Dth) \| Mcf	846	909
Duke Energy Carolinas \| Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 1,050	$ 1,250
Duke Energy Carolinas \| Interest Rate Contracts \| Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 1,050	$ 1,250
Duke Energy Carolinas \| Commodity contracts \| Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume of natural gas (in millions of Dth) \| Mcf	279	307
Progress Energy \| Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 1,250	$ 800
Progress Energy \| Interest Rate Contracts \| Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 1,250	$ 800
Progress Energy \| Commodity contracts \| Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume of natural gas (in millions of Dth) \| Mcf	274	292
Duke Energy Progress \| Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 925	$ 500
Duke Energy Progress \| Interest Rate Contracts \| Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 925	$ 500
Duke Energy Progress \| Commodity contracts \| Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume of natural gas (in millions of Dth) \| Mcf	274	292
Duke Energy Florida \| Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 325	$ 300
Duke Energy Florida \| Interest Rate Contracts \| Undesignated contracts
Derivative [Line Items]
Pay Notional	325	300
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	1,616	1,820
Duke Energy Indiana \| Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 400	$ 300
Duke Energy Indiana \| Interest Rate Contracts \| Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 400	$ 300
Duke Energy Indiana \| Commodity contracts \| Electricity (GWh)
Derivative [Line Items]
Notional amount, energy measure, electricity (in GWh) \| GWh	11,992	12,266
Duke Energy Indiana \| Commodity contracts \| Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume of natural gas (in millions of Dth) \| Mcf	30	11
Piedmont \| Commodity contracts \| Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume of natural gas (in millions of Dth) \| Mcf	263	299

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.

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

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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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