Debt and Credit Facilities (Summary of Debt Issuances) (Details) € in Millions	3 Months Ended	9 Months Ended
	Mar. 31, 2024 USD ($)	Sep. 30, 2024 USD ($)	Apr. 30, 2024 USD ($)	Apr. 30, 2024 EUR (€)
Debt Instrument [Line Items]
Debt issuances		$ 7,740,000,000
4.85% January 2024 2024 Notes Due January 2027 \| Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)		4.85%
Debt issuances		$ 600,000,000
4.85% January 2024 2024 Notes Due January 2029 \| Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)		4.85%
Debt issuances		$ 650,000,000
April 2024 5.648% Notes Due April 2031 \| Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)		5.648%
Debt issuances		$ 815,000,000	$ 815,000,000
June 2024 5.450% Notes Due June 2034 \| Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)		5.45%
Debt issuances		$ 750,000,000
June 2024 5.800% Notes Due June 2054 \| Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)		5.80%
Debt issuances		$ 750,000,000
June 2024 5.900% Notes Due June 2031 \| Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)		5.90%
Debt issuances		$ 80,000,000
June 2024 6.000% Notes Due July 2034 \| Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)		6.00%
Debt issuances		$ 95,000,000
June 2024 6.170% Notes Due July 2039 \| Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)		6.17%
Debt issuances		$ 50,000,000
August 2024 5.100% Notes Due February 2035 \| Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)		5.10%
Debt issuances		$ 375,000,000
August 2024 6.450% Notes Due September 2054 \| Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)		6.45%
Debt issuances		$ 1,000,000,000
Interest rate reset		5 years
Basis spread on variable rate (as a percent)		2.588%
Percentage of principal		100.00%
April 2024 5.404% Notes \| Secured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)		5.404%
Debt issuances		$ 177,000,000
4.85% January 2024 Notes Due January 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)		4.85%
Debt issuances		$ 575,000,000
5.40% January 2024 Notes Due January 2054 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)		5.40%
Debt issuances		$ 425,000,000
5.25% March 2024 Notes Due March 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)		5.25%
Debt issuances		$ 300,000,000
5.10% March 2024 Notes Due March 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)		5.10%
Debt issuances		$ 500,000,000
5.55% March 2024 Notes Due March 2054 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)		5.55%
Debt issuances		$ 425,000,000
April 2024 Notes Due April 2074 \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)		5.008%
Debt issuances		$ 173,000,000
Maturities Due March 2024
Debt Instrument [Line Items]
Repayments of debt	$ 1,000,000,000
Variable Rate Term Loan Due March 2024 \| Secured Debt
Debt Instrument [Line Items]
Repayment of debt			$ 1,000,000,000
Senior Notes 3.75% Due 2031 \| Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)			3.75%	3.75%
Debt issuances \| €				€ 750
Duke Energy (Parent)
Debt Instrument [Line Items]
Debt issuances		4,565,000,000
Duke Energy (Parent) \| 4.85% January 2024 2024 Notes Due January 2027 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		600,000,000
Duke Energy (Parent) \| 4.85% January 2024 2024 Notes Due January 2029 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		650,000,000
Duke Energy (Parent) \| April 2024 5.648% Notes Due April 2031 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		815,000,000
Duke Energy (Parent) \| June 2024 5.450% Notes Due June 2034 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		750,000,000
Duke Energy (Parent) \| June 2024 5.800% Notes Due June 2054 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		750,000,000
Duke Energy (Parent) \| June 2024 5.900% Notes Due June 2031 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy (Parent) \| June 2024 6.000% Notes Due July 2034 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy (Parent) \| June 2024 6.170% Notes Due July 2039 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy (Parent) \| August 2024 5.100% Notes Due February 2035 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy (Parent) \| August 2024 6.450% Notes Due September 2054 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		1,000,000,000
Duke Energy (Parent) \| April 2024 5.404% Notes \| Secured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy (Parent) \| 4.85% January 2024 Notes Due January 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy (Parent) \| 5.40% January 2024 Notes Due January 2054 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy (Parent) \| 5.25% March 2024 Notes Due March 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy (Parent) \| 5.10% March 2024 Notes Due March 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy (Parent) \| 5.55% March 2024 Notes Due March 2054 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy (Parent) \| April 2024 Notes Due April 2074 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas
Debt Instrument [Line Items]
Debt issuances		1,000,000,000
Duke Energy Carolinas \| 4.85% January 2024 2024 Notes Due January 2027 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas \| 4.85% January 2024 2024 Notes Due January 2029 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas \| April 2024 5.648% Notes Due April 2031 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas \| June 2024 5.450% Notes Due June 2034 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas \| June 2024 5.800% Notes Due June 2054 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas \| June 2024 5.900% Notes Due June 2031 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas \| June 2024 6.000% Notes Due July 2034 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas \| June 2024 6.170% Notes Due July 2039 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas \| August 2024 5.100% Notes Due February 2035 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas \| August 2024 6.450% Notes Due September 2054 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas \| April 2024 5.404% Notes \| Secured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas \| 4.85% January 2024 Notes Due January 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		575,000,000
Duke Energy Carolinas \| 5.40% January 2024 Notes Due January 2054 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		425,000,000
Duke Energy Carolinas \| 5.25% March 2024 Notes Due March 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas \| 5.10% March 2024 Notes Due March 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas \| 5.55% March 2024 Notes Due March 2054 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas \| April 2024 Notes Due April 2074 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress
Debt Instrument [Line Items]
Debt issuances		677,000,000
Duke Energy Progress \| 4.85% January 2024 2024 Notes Due January 2027 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress \| 4.85% January 2024 2024 Notes Due January 2029 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress \| April 2024 5.648% Notes Due April 2031 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress \| June 2024 5.450% Notes Due June 2034 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress \| June 2024 5.800% Notes Due June 2054 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress \| June 2024 5.900% Notes Due June 2031 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress \| June 2024 6.000% Notes Due July 2034 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress \| June 2024 6.170% Notes Due July 2039 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress \| August 2024 5.100% Notes Due February 2035 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress \| August 2024 6.450% Notes Due September 2054 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress \| April 2024 5.404% Notes \| Secured Debt
Debt Instrument [Line Items]
Debt issuances		177,000,000
Duke Energy Progress \| 4.85% January 2024 Notes Due January 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress \| 5.40% January 2024 Notes Due January 2054 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress \| 5.25% March 2024 Notes Due March 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress \| 5.10% March 2024 Notes Due March 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		500,000,000
Duke Energy Progress \| 5.55% March 2024 Notes Due March 2054 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress \| April 2024 Notes Due April 2074 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida
Debt Instrument [Line Items]
Debt issuances		173,000,000
Duke Energy Florida \| 4.85% January 2024 2024 Notes Due January 2027 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida \| 4.85% January 2024 2024 Notes Due January 2029 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida \| April 2024 5.648% Notes Due April 2031 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida \| June 2024 5.450% Notes Due June 2034 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida \| June 2024 5.800% Notes Due June 2054 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida \| June 2024 5.900% Notes Due June 2031 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida \| June 2024 6.000% Notes Due July 2034 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida \| June 2024 6.170% Notes Due July 2039 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida \| August 2024 5.100% Notes Due February 2035 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida \| August 2024 6.450% Notes Due September 2054 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida \| April 2024 5.404% Notes \| Secured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida \| 4.85% January 2024 Notes Due January 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida \| 5.40% January 2024 Notes Due January 2054 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida \| 5.25% March 2024 Notes Due March 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida \| 5.10% March 2024 Notes Due March 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida \| 5.55% March 2024 Notes Due March 2054 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida \| April 2024 Notes Due April 2074 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		173,000,000
Duke Energy Ohio
Debt Instrument [Line Items]
Debt issuances		650,000,000
Duke Energy Ohio \| 4.85% January 2024 2024 Notes Due January 2027 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio \| 4.85% January 2024 2024 Notes Due January 2029 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio \| April 2024 5.648% Notes Due April 2031 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio \| June 2024 5.450% Notes Due June 2034 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio \| June 2024 5.800% Notes Due June 2054 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio \| June 2024 5.900% Notes Due June 2031 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		80,000,000
Duke Energy Ohio \| June 2024 6.000% Notes Due July 2034 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		95,000,000
Duke Energy Ohio \| June 2024 6.170% Notes Due July 2039 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		50,000,000
Duke Energy Ohio \| August 2024 5.100% Notes Due February 2035 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio \| August 2024 6.450% Notes Due September 2054 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio \| April 2024 5.404% Notes \| Secured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio \| 4.85% January 2024 Notes Due January 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio \| 5.40% January 2024 Notes Due January 2054 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio \| 5.25% March 2024 Notes Due March 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio \| 5.10% March 2024 Notes Due March 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio \| 5.55% March 2024 Notes Due March 2054 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		425,000,000
Duke Energy Ohio \| April 2024 Notes Due April 2074 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana
Debt Instrument [Line Items]
Debt issuances		300,000,000
Duke Energy Indiana \| 4.85% January 2024 2024 Notes Due January 2027 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana \| 4.85% January 2024 2024 Notes Due January 2029 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana \| April 2024 5.648% Notes Due April 2031 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana \| June 2024 5.450% Notes Due June 2034 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana \| June 2024 5.800% Notes Due June 2054 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana \| June 2024 5.900% Notes Due June 2031 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana \| June 2024 6.000% Notes Due July 2034 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana \| June 2024 6.170% Notes Due July 2039 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana \| August 2024 5.100% Notes Due February 2035 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana \| August 2024 6.450% Notes Due September 2054 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana \| April 2024 5.404% Notes \| Secured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana \| 4.85% January 2024 Notes Due January 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana \| 5.40% January 2024 Notes Due January 2054 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana \| 5.25% March 2024 Notes Due March 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		300,000,000
Duke Energy Indiana \| 5.10% March 2024 Notes Due March 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana \| 5.55% March 2024 Notes Due March 2054 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana \| April 2024 Notes Due April 2074 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Piedmont
Debt Instrument [Line Items]
Debt issuances		375,000,000
Piedmont \| 4.85% January 2024 2024 Notes Due January 2027 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Piedmont \| 4.85% January 2024 2024 Notes Due January 2029 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Piedmont \| April 2024 5.648% Notes Due April 2031 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Piedmont \| June 2024 5.450% Notes Due June 2034 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Piedmont \| June 2024 5.800% Notes Due June 2054 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Piedmont \| June 2024 5.900% Notes Due June 2031 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Piedmont \| June 2024 6.000% Notes Due July 2034 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Piedmont \| June 2024 6.170% Notes Due July 2039 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Piedmont \| August 2024 5.100% Notes Due February 2035 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		375,000,000
Piedmont \| August 2024 6.450% Notes Due September 2054 \| Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Piedmont \| April 2024 5.404% Notes \| Secured Debt
Debt Instrument [Line Items]
Debt issuances		0
Piedmont \| 4.85% January 2024 Notes Due January 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Piedmont \| 5.40% January 2024 Notes Due January 2054 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Piedmont \| 5.25% March 2024 Notes Due March 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Piedmont \| 5.10% March 2024 Notes Due March 2034 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Piedmont \| 5.55% March 2024 Notes Due March 2054 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Piedmont \| April 2024 Notes Due April 2074 \| First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		$ 0