Debt and Credit Facilities (Summary of Debt Issuances) (Details)	6 Months Ended
Jun. 30, 2023 USD ($)
Debt Instrument [Line Items]
Debt issuances	$ 6,975,000,000
4.125% April 2023 2023 Notes Due April 2026 \| Unsecured Debt
Debt Instrument [Line Items]
Interest rate	4.125%
Debt issuances	$ 1,725,000,000
5.400% June 2023 2023 Notes Due June 2023 \| Unsecured Debt
Debt Instrument [Line Items]
Interest rate	5.40%
Debt issuances	$ 350,000,000
4.95% January 2023 Notes Due January 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate	4.95%
5.350% January 2023 Notes Due January 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate	5.35%
5.250% March 2022 Notes Due April 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate	5.25%
5.350% March 2022 Notes Due April 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate	5.35%
5.250% March 2022 Notes Due April 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate	5.25%
5.650% March 2022 Notes Due April 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate	5.65%
5.400% March 2022 Notes Due April 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate	5.40%
4.950% June 2023 2023 Notes Due January 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate	4.95%
5.400% June 2023 2023 Notes Due January 2054 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate	5.40%
Maturities Due October 2023
Debt Instrument [Line Items]
Repayments of debt	$ 45,000,000
Maturities Due March 2023
Debt Instrument [Line Items]
Repayments of debt	1,000,000,000
Maturities Due September 2023
Debt Instrument [Line Items]
Repayments of debt	300,000,000
Maturities Due October 2023
Debt Instrument [Line Items]
Repayments of debt	100,000,000
Maturities Due October 2023
Debt Instrument [Line Items]
Repayments of debt	300,000,000
Duke Energy (Parent)
Debt Instrument [Line Items]
Debt issuances	1,725,000,000
Duke Energy (Parent) \| 4.125% April 2023 2023 Notes Due April 2026 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances	1,725,000,000
Duke Energy (Parent) \| 5.400% June 2023 2023 Notes Due June 2023 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances	0
Duke Energy (Parent) \| 4.95% January 2023 Notes Due January 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	900,000,000
Duke Energy (Parent) \| 5.350% January 2023 Notes Due January 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	900,000,000
Duke Energy (Parent) \| 5.250% March 2022 Notes Due April 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	500,000,000
Duke Energy (Parent) \| 5.350% March 2022 Notes Due April 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	500,000,000
Duke Energy (Parent) \| 5.250% March 2022 Notes Due April 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	375,000,000
Duke Energy (Parent) \| 5.650% March 2022 Notes Due April 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	375,000,000
Duke Energy (Parent) \| 5.400% March 2022 Notes Due April 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	500,000,000
Duke Energy (Parent) \| 4.950% June 2023 2023 Notes Due January 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	350,000,000
Duke Energy (Parent) \| 5.400% June 2023 2023 Notes Due January 2054 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	500,000,000
Duke Energy Carolinas
Debt Instrument [Line Items]
Debt issuances	2,650,000,000
Duke Energy Carolinas \| 4.95% January 2023 Notes Due January 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	900,000,000
Duke Energy Carolinas \| 5.350% January 2023 Notes Due January 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	900,000,000
Duke Energy Carolinas \| 5.250% March 2022 Notes Due April 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	0
Duke Energy Carolinas \| 5.350% March 2022 Notes Due April 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	0
Duke Energy Carolinas \| 5.250% March 2022 Notes Due April 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	0
Duke Energy Carolinas \| 5.650% March 2022 Notes Due April 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	0
Duke Energy Carolinas \| 5.400% March 2022 Notes Due April 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	0
Duke Energy Carolinas \| 4.950% June 2023 2023 Notes Due January 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	350,000,000
Duke Energy Carolinas \| 5.400% June 2023 2023 Notes Due January 2054 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	500,000,000
Duke Energy Progress
Debt Instrument [Line Items]
Debt issuances	1,000,000,000
Duke Energy Progress \| 4.95% January 2023 Notes Due January 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	0
Duke Energy Progress \| 5.350% January 2023 Notes Due January 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	0
Duke Energy Progress \| 5.250% March 2022 Notes Due April 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	500,000,000
Duke Energy Progress \| 5.350% March 2022 Notes Due April 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	500,000,000
Duke Energy Progress \| 5.250% March 2022 Notes Due April 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	0
Duke Energy Progress \| 5.650% March 2022 Notes Due April 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	0
Duke Energy Progress \| 5.400% March 2022 Notes Due April 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	0
Duke Energy Progress \| 4.950% June 2023 2023 Notes Due January 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	0
Duke Energy Progress \| 5.400% June 2023 2023 Notes Due January 2054 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	0
Duke Energy Ohio
Debt Instrument [Line Items]
Debt issuances	750,000,000
Duke Energy Ohio \| 5.250% March 2022 Notes Due April 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	375,000,000
Duke Energy Ohio \| 5.650% March 2022 Notes Due April 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	375,000,000
Duke Energy Indiana
Debt Instrument [Line Items]
Debt issuances	500,000,000
Duke Energy Indiana \| 4.95% January 2023 Notes Due January 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	0
Duke Energy Indiana \| 5.350% January 2023 Notes Due January 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	0
Duke Energy Indiana \| 5.250% March 2022 Notes Due April 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	0
Duke Energy Indiana \| 5.350% March 2022 Notes Due April 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	0
Duke Energy Indiana \| 5.250% March 2022 Notes Due April 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	0
Duke Energy Indiana \| 5.650% March 2022 Notes Due April 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	0
Duke Energy Indiana \| 5.400% March 2022 Notes Due April 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	500,000,000
Duke Energy Indiana \| 4.950% June 2023 2023 Notes Due January 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	0
Duke Energy Indiana \| 5.400% June 2023 2023 Notes Due January 2054 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	0
Piedmont
Debt Instrument [Line Items]
Debt issuances	350,000,000
Piedmont \| 4.125% April 2023 2023 Notes Due April 2026 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances	0
Piedmont \| 5.400% June 2023 2023 Notes Due June 2023 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances	$ 350,000,000

Face (par) amount of debt instrument at time of issuance.

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- 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 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482900/835-30-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(f))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-3

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 5: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481568/470-20-55-69B

Reference 6: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69C
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481568/470-20-55-69C

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69E
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481568/470-20-55-69E

Reference 8: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69F
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481568/470-20-55-69F

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 11: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1D
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1D

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1D
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1D

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1D
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1D

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1E

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1E

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1E

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1F
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1F
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1F
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1F
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1I

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of cash outflow for short-term and long-term debt. Excludes payment of lease obligation.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 15
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-15

+ Details

Name:	us-gaap_RepaymentsOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration