Regulatory Matters (Duke Energy Progress Narrative) (Details)							12 Months Ended
	Feb. 07, 2025 USD ($) MW	Mar. 28, 2024 USD ($) MW	Aug. 18, 2023 USD ($)	Apr. 16, 2023	Oct. 06, 2022	Sep. 01, 2022 USD ($)	Aug. 17, 2027 USD ($)	Aug. 17, 2026 USD ($)	Aug. 17, 2025 USD ($)	Dec. 31, 2024 USD ($)	Aug. 17, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jan. 01, 2026 MW	Apr. 25, 2024 USD ($)
Public Utilities, General Disclosures [Line Items]
Impairment of assets and other charges										$ 38,000,000		$ 85,000,000	$ 434,000,000
Operation, maintenance and other										5,389,000,000		5,625,000,000	5,734,000,000
Debt Instrument, Face Amount										7,740,000,000		9,825,000,000
Duke Energy Progress
Public Utilities, General Disclosures [Line Items]
Impairment of assets and other charges										6,000,000		29,000,000	7,000,000
Operation, maintenance and other										1,388,000,000		1,379,000,000	1,475,000,000
Debt Instrument, Face Amount										677,000,000		1,000,000,000
Duke Energy Progress | Storm Recovery Bonds
Public Utilities, General Disclosures [Line Items]
Debt Instrument, Face Amount															$ 177,000,000
Duke Energy Carolinas
Public Utilities, General Disclosures [Line Items]
Impairment of assets and other charges										31,000,000		44,000,000	26,000,000
Operation, maintenance and other										1,740,000,000		1,774,000,000	$ 1,892,000,000
Debt Instrument, Face Amount										1,000,000,000		$ 2,650,000,000
2022 North Carolina Rate Case | NCUC | Duke Energy Progress
Public Utilities, General Disclosures [Line Items]
Proposed rate period (in years)				3 years	3 years
Approved rate increase (decrease) amount by state commission											$ 233,000,000
Settlement amount			$ 12,200,000,000
MYRP period (in years)			3 years
Approved return on equity (as a percent)			9.80%
Impairment of assets and other charges										28,000,000
Operation, maintenance and other										$ 8,000,000
2022 North Carolina Rate Case | NCUC | Duke Energy Progress | Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)			53.00%
2022 North Carolina Rate Case | NCUC | Duke Energy Progress | Forecast
Public Utilities, General Disclosures [Line Items]
Approved rate increase (decrease) amount by state commission							$ 494,000,000	$ 135,000,000	$ 126,000,000
2022 North Carolina Rate Case, Retail Allocated | NCUC | Duke Energy Progress
Public Utilities, General Disclosures [Line Items]
Settlement amount			$ 3,500,000,000
2022 South Carolina Rate Case | PSCSC | Duke Energy Progress
Public Utilities, General Disclosures [Line Items]
Approved rate increase (decrease) amount by state commission						$ 52,000,000
2022 South Carolina Rate Case, Retail Rate Case | PSCSC | Duke Energy Progress
Public Utilities, General Disclosures [Line Items]
Approved rate increase (decrease) amount by state commission						$ 36,000,000
Approved return on equity (as a percent)						9.60%
Deferred compliance costs period (in years)						33 months
2022 South Carolina Rate Case, Retail Rate Case | PSCSC | Duke Energy Progress | Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)						52.43%
2022 South Carolina Rate Case, Coal Ash Basin Closure Costs | PSCSC | Duke Energy Progress
Public Utilities, General Disclosures [Line Items]
Deferred compliance costs period (in years)						7 years
Deferred costs not recovering						$ 50,000,000
Person County Combined Cycle CPCN | NCUC | Duke Energy Progress
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease)		$ 98,000,000
Public Utilities, Combined Cycle Plants, in Megawatts | MW		1,360
Requested rate increase (decrease), percent		2.60%
Person County Combined Cycle CPCN | NCUC | Duke Energy Progress | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease)	$ 113,000,000
Public Utilities, Combined Cycle Plants, in Megawatts | MW	1,360
Requested rate increase (decrease), percent	2.60%
Person County Combined Cycle CPCN | NCUC | NCEMC | Forecast
Public Utilities, General Disclosures [Line Items]
Public Utilities, Combined Cycle Plants, in Megawatts | MW														225
Person County Combined Cycle CPCN | NCUC | NCEMC | Forecast | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Public Utilities, Combined Cycle Plants, in Megawatts | MW	225
Person County Combined Cycle CPCN | NCEMC | Duke Energy Progress | Forecast
Public Utilities, General Disclosures [Line Items]
Public Utilities, Combined Cycle Plants, in Megawatts | MW														1,135