Derivatives and Hedging (Notional Amounts of Derivative Instruments) (Details) Mcf in Millions, $ in Millions	12 Months Ended
Dec. 31, 2022 USD ($) GWh Mcf	Dec. 31, 2021 USD ($) GWh Mcf
Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 3,479	$ 3,592
Interest Rate Contracts \| Designated contracts \| Cash flow hedges
Derivative [Line Items]
Pay Notional	500	2,415
Interest Rate Contracts \| Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 2,979	$ 1,177
Commodity contracts \| Electricity (GWh)
Derivative [Line Items]
Notional amount, energy measure, in gigawatt-hours \| GWh	14,086	12,369
Commodity contracts \| Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume in millions of dekatherms \| Mcf	909	823
Duke Energy Carolinas \| Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 1,250	$ 350
Duke Energy Carolinas \| Interest Rate Contracts \| Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 1,250	$ 350
Duke Energy Carolinas \| Commodity contracts \| Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume in millions of dekatherms \| Mcf	307	264
Progress Energy \| Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 800	$ 500
Progress Energy \| Interest Rate Contracts \| Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 800	$ 500
Progress Energy \| Commodity contracts \| Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume in millions of dekatherms \| Mcf	292	215
Duke Energy Progress \| Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 500	$ 500
Duke Energy Progress \| Interest Rate Contracts \| Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 500	$ 500
Duke Energy Progress \| Commodity contracts \| Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume in millions of dekatherms \| Mcf	292	215
Duke Energy Florida \| Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 300
Duke Energy Florida \| Interest Rate Contracts \| Undesignated contracts
Derivative [Line Items]
Pay Notional	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, in gigawatt-hours \| GWh	1,820	1,681
Duke Energy Indiana \| Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 300	$ 300
Duke Energy Indiana \| Interest Rate Contracts \| Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 300	$ 300
Duke Energy Indiana \| Commodity contracts \| Electricity (GWh)
Derivative [Line Items]
Notional amount, energy measure, in gigawatt-hours \| GWh	12,266	10,688
Duke Energy Indiana \| Commodity contracts \| Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume in millions of dekatherms \| Mcf	11	8
Piedmont \| Commodity contracts \| Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume in millions of dekatherms \| Mcf	299	336

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+ References

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+ 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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