Debt and Credit Facilities (Summary of Debt Issuances) (Details)	9 Months Ended
Sep. 30, 2023 USD ($)
Debt Instrument [Line Items]
Debt issuances	$ 8,525,000,000
4.125% April 2023 2023 Notes Due April 2026 \| Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)	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 (as a percent)	5.40%
Debt issuances	$ 350,000,000
4.95% January 2023 Notes Due January 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)	4.95%
Debt issuances	$ 900,000,000
5.350% January 2023 Notes Due January 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)	5.35%
Debt issuances	$ 900,000,000
5.250% March 2022 Notes Due April 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)	5.25%
Debt issuances	$ 500,000,000
5.350% March 2022 Notes Due April 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)	5.35%
Debt issuances	$ 500,000,000
5.250% March 2022 Notes Due April 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)	5.25%
Debt issuances	$ 375,000,000
5.650% March 2022 Notes Due April 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)	5.65%
Debt issuances	$ 375,000,000
5.400% March 2022 Notes Due April 2053 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)	5.40%
Debt issuances	$ 500,000,000
4.950% June 2023 2023 Notes Due January 2033 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)	4.95%
Debt issuances	$ 350,000,000
5.400% June 2023 2023 Notes Due January 2054 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)	5.40%
Debt issuances	$ 500,000,000
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	400,000,000
Maturities Due October 2023
Debt Instrument [Line Items]
Repayments of debt	$ 300,000,000
4.960% September 2023 Notes Due October 2073 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)	4.96%
Debt issuances	$ 200,000,000
Maturities Due October 2023, Portion
Debt Instrument [Line Items]
Repayments of debt	$ 100,000,000
Sept 2023 5.75% Notes Due Sept 2033 \| Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)	5.75%
Debt issuances	$ 600,000,000
Sept 2023 4.300% Notes Due Sept 2053 \| Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)	6.10%
Debt issuances	$ 750,000,000
Duke Energy (Parent)
Debt Instrument [Line Items]
Debt issuances	3,075,000,000
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) \| Sept 2023 5.75% Notes Due Sept 2033 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances	600,000,000
Duke Energy (Parent) \| Sept 2023 4.300% Notes Due Sept 2053 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances	750,000,000
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 Carolinas \| 4.960% September 2023 Notes Due October 2073 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	0
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 Progress \| 4.960% September 2023 Notes Due October 2073 \| 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
Duke Energy Indiana \| 4.960% September 2023 Notes Due October 2073 \| 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
Duke Energy Florida
Debt Instrument [Line Items]
Debt issuances	200,000,000
Duke Energy Florida \| 4.960% September 2023 Notes Due October 2073 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances	$ 200,000,000

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

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- Definition

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

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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.

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- Definition

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

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