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Derivatives and Hedging (Notional Amounts of Derivative Instruments) (Details) dth in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025 USD ($) GWh dth	Dec. 31, 2024 USD ($) GWh dth
Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 5,577	$ 6,027
Interest Rate Contracts | Designated contracts | Cash flow hedges
Derivative [Line Items]
Pay Notional	1,725	2,825
Interest Rate Contracts | Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 3,852	$ 3,202
Commodity contracts | Electricity (GWh)
Derivative [Line Items]
Notional amount, energy measure, electricity (in GWh) | GWh	10,615	12,229
Commodity contracts | Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, energy measure, electricity (in GWh) | dth	814	779
Duke Energy Carolinas | Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 2,175	$ 1,150
Duke Energy Carolinas | Interest Rate Contracts | Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 2,175	$ 1,150
Duke Energy Carolinas | Commodity contracts | Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, energy measure, electricity (in GWh) | dth	307	276
Progress Energy | Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 1,325	$ 1,775
Progress Energy | Interest Rate Contracts | Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 1,325	$ 1,775
Progress Energy | Commodity contracts | Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, energy measure, electricity (in GWh) | dth	286	246
Duke Energy Progress | Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 650	$ 1,125
Duke Energy Progress | Interest Rate Contracts | Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 650	$ 1,125
Duke Energy Progress | Commodity contracts | Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, energy measure, electricity (in GWh) | dth	286	246
Duke Energy Florida | Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 675	$ 650
Duke Energy Florida | Interest Rate Contracts | Undesignated contracts
Derivative [Line Items]
Pay Notional	675	650
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	1,349	1,287
Duke Energy Indiana | Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 325	$ 250
Duke Energy Indiana | Interest Rate Contracts | Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 325	$ 250
Duke Energy Indiana | Commodity contracts | Electricity (GWh)
Derivative [Line Items]
Notional amount, energy measure, electricity (in GWh) | GWh	9,266	10,942
Duke Energy Indiana | Commodity contracts | Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, energy measure, electricity (in GWh) | dth	33	32
Piedmont | Commodity contracts | Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, energy measure, electricity (in GWh) | dth	188	225

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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/2009/role/commonPracticeRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 25
-Paragraph 6A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480682/815-20-25-6A

Reference 2: 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/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 181
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-181

Reference 2: 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 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
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-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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