Debt and Credit Facilities (Summary of Current Maturities of Long-term Debt) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Jan. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Current maturities of long-term debt		$ 4,349	$ 2,800
Duke Energy Florida
Debt Instrument [Line Items]
Current maturities of long-term debt		534	589
Duke Energy Ohio
Debt Instrument [Line Items]
Current maturities of long-term debt		245	0
Piedmont
Debt Instrument [Line Items]
Current maturities of long-term debt		205	40
Duke Energy Carolinas
Debt Instrument [Line Items]
Current maturities of long-term debt		521	19
Duke Energy Carolinas | Maturities Due January 2025 | Subsequent Event
Debt Instrument [Line Items]
Repayments of debt	$ 500
Duke Energy Progress
Debt Instrument [Line Items]
Current maturities of long-term debt		$ 983	$ 72
Unsecured Debt | Parent | Debt Maturing April 2025, 3.364% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		3.364%
Current maturities of long-term debt		$ 420
Unsecured Debt | Parent | Debt Maturing April 2025, 3.950% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		3.95%
Current maturities of long-term debt		$ 250
Unsecured Debt | Parent | Debt Maturing September 2025, 0.900% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		0.90%
Current maturities of long-term debt		$ 650
Unsecured Debt | Parent | Debt Maturing December 2025, 5.000% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		5.00%
Current maturities of long-term debt		$ 500
Unsecured Debt | Duke Energy Florida | Debt Maturing October 2025, 5.303% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		5.303%
Current maturities of long-term debt		$ 100
Unsecured Debt | Duke Energy Ohio | Debt Maturing June 2025, 6.900% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		6.90%
Current maturities of long-term debt		$ 150
Unsecured Debt | Duke Energy Ohio | Debt Maturing October 2025, 3.230% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		3.23%
Current maturities of long-term debt		$ 95
Unsecured Debt | Piedmont | Debt Maturing September 2025, 3.600% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		3.60%
Current maturities of long-term debt		$ 150
Secured Debt | Duke Energy Carolinas | Debt Maturing January 2025, 5.378% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		5.378%
Current maturities of long-term debt		$ 305
Secured Debt | Duke Energy Carolinas | Debt Maturing January 2025, 5.423% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		5.423%
Current maturities of long-term debt		$ 195
Secured Debt | Duke Energy Progress | Debt Maturing April 2025, 5.456% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		5.456%
Current maturities of long-term debt		$ 240
Secured Debt | Duke Energy Progress | Debt Maturing April 2025, 5.467% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		5.467%
Current maturities of long-term debt		$ 160
First Mortgage Bonds | Duke Energy Florida | Debt Maturing October 2073, 4.910% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		4.91%
Current maturities of long-term debt		$ 200
First Mortgage Bonds | Duke Energy Florida | Debt Maturing April 2074, 4.910% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		4.91%
Current maturities of long-term debt		$ 173
First Mortgage Bonds | Duke Energy Progress | Debt Maturing August 2025, 3.250% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		3.25%
Current maturities of long-term debt		$ 500
Other
Debt Instrument [Line Items]
Current maturities of long-term debt		$ 261
First Mortgage Bonds | Duke Energy Florida | Debt Maturing October 2073, 4.910% Coupon
Debt Instrument [Line Items]
Term (in years)		12 months
First Mortgage Bonds | Duke Energy Florida | Debt Maturing April 2074, 4.910% Coupon
Debt Instrument [Line Items]
Term (in years)		12 months