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.

No definition available.

+ Details

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- Definition

Nominal energy measure used to calculate payments on a derivative instrument.

+ References

No definition available.

+ Details

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- Definition

Nominal volume used to calculate payments on a derivative instrument.

+ References

No definition available.

+ Details

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

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Derivatives and Hedging (Notional Amounts of Derivative Instruments) (Details) Mcf in Millions, $ in Millions	3 Months Ended	9 Months Ended
	Mar. 31, 2022 GWh Mcf	Sep. 30, 2022 USD ($) GWh Mcf	Dec. 31, 2021 USD ($)
Interest Rate Contracts
Derivative [Line Items]
Notional amount		$ 2,227	$ 3,592
Commodity contracts \| Cash flow hedges
Derivative [Line Items]
Notional amount, energy measure (in gigawatt-hours) \| GWh	9,975	4,335
Commodity contracts \| Electricity (GWh)(a)
Derivative [Line Items]
Notional amount, energy measure (in gigawatt-hours) \| GWh	22,344	32,282
Commodity contracts \| Natural gas (millions of dekatherms)
Derivative [Line Items]
Notional amount, volume (in millions of dekatherms) \| Mcf	823	862
Designated contracts \| Interest Rate Contracts
Derivative [Line Items]
Notional amount		$ 1,125	2,415
Designated contracts \| Interest Rate Contracts \| VIE primary beneficiary
Derivative [Line Items]
Notional amount		625	665
Undesignated contracts \| Interest Rate Contracts
Derivative [Line Items]
Notional amount		1,102	1,177
Duke Energy Carolinas \| Interest Rate Contracts
Derivative [Line Items]
Notional amount		$ 625	350
Duke Energy Carolinas \| Commodity contracts \| Natural gas (millions of dekatherms)
Derivative [Line Items]
Notional amount, volume (in millions of dekatherms) \| Mcf	264	274
Duke Energy Carolinas \| Undesignated contracts \| Interest Rate Contracts
Derivative [Line Items]
Notional amount		$ 625	350
Progress Energy \| Interest Rate Contracts
Derivative [Line Items]
Notional amount		$ 150	500
Progress Energy \| Commodity contracts \| Natural gas (millions of dekatherms)
Derivative [Line Items]
Notional amount, volume (in millions of dekatherms) \| Mcf	215	265
Progress Energy \| Undesignated contracts \| Interest Rate Contracts
Derivative [Line Items]
Notional amount		$ 150	500
Duke Energy Progress \| Interest Rate Contracts
Derivative [Line Items]
Notional amount		$ 150	500
Duke Energy Progress \| Commodity contracts \| Natural gas (millions of dekatherms)
Derivative [Line Items]
Notional amount, volume (in millions of dekatherms) \| Mcf	215	265
Duke Energy Progress \| Undesignated contracts \| Interest Rate Contracts
Derivative [Line Items]
Notional amount		$ 150	500
Duke Energy Indiana \| Interest Rate Contracts
Derivative [Line Items]
Notional amount		$ 300	300
Duke Energy Indiana \| Commodity contracts \| Electricity (GWh)(a)
Derivative [Line Items]
Notional amount, energy measure (in gigawatt-hours) \| GWh	10,688	18,633
Duke Energy Indiana \| Commodity contracts \| Natural gas (millions of dekatherms)
Derivative [Line Items]
Notional amount, volume (in millions of dekatherms) \| Mcf	8	14
Duke Energy Indiana \| Undesignated contracts \| Interest Rate Contracts
Derivative [Line Items]
Notional amount		$ 300	300
Duke Energy Ohio \| Interest Rate Contracts
Derivative [Line Items]
Notional amount		$ 27	27
Duke Energy Ohio \| Commodity contracts \| Electricity (GWh)(a)
Derivative [Line Items]
Notional amount, energy measure (in gigawatt-hours) \| GWh	1,681	3,067
Duke Energy Ohio \| Undesignated contracts \| Interest Rate Contracts
Derivative [Line Items]
Notional amount		$ 27	$ 27
Piedmont \| Commodity contracts \| Natural gas (millions of dekatherms)
Derivative [Line Items]
Notional amount, volume (in millions of dekatherms) \| Mcf	336	309