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Regulatory Matters (Duke Energy Narrative) (Details) - USD ($) $ in Millions			12 Months Ended
	Jun. 07, 2021	Jun. 06, 2021	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Public Utilities, General Disclosures [Line Items]
Capital expenditures				$ 12,263	$ 12,622	$ 11,419
Operation, maintenance and other				5,389	5,625	5,734
Regulatory assets				17,010	17,266
Other Noncurrent Assets: Regulatory assets				$ 14,254	13,618
Nuclear Regulatory Commission
Public Utilities, General Disclosures [Line Items]
Operating license extension (in years)				20 years
Hurricanes Helene, Debby and Milton
Public Utilities, General Disclosures [Line Items]
Estimated storm restoration costs				$ 2,600
Hurricanes Helene, Debby and Milton | Forecast
Public Utilities, General Disclosures [Line Items]
Estimated storm restoration costs			$ 200
Hurricanes Helene, Debby and Milton | Minimum
Public Utilities, General Disclosures [Line Items]
Estimated storm restoration costs				$ 2,800
Duke Energy Ohio
Public Utilities, General Disclosures [Line Items]
Limit of total capital (as a percent)				30.00%
Capital expenditures				$ 815	939	850
Operation, maintenance and other				485	478	523
Regulatory assets				793	749
Other Noncurrent Assets: Regulatory assets				$ 705	676
Duke Energy Kentucky
Public Utilities, General Disclosures [Line Items]
Required minimum equity capital structure (as a percent)				35.00%
Duke Energy Carolinas and Duke Energy Progress | Natural Disasters and Other Casualty Events
Public Utilities, General Disclosures [Line Items]
Other Noncurrent Assets: Regulatory assets				$ 802	87
Duke Energy Carolinas and Duke Energy Progress | Natural Disasters and Other Casualty Events | Minimum
Public Utilities, General Disclosures [Line Items]
Storm costs incurred				95
Capital expenditures				8
Duke Energy Carolinas and Duke Energy Progress | Hurricanes Helene, Debby and Milton | Minimum
Public Utilities, General Disclosures [Line Items]
Storm costs incurred				860
Capital expenditures				548
Duke Energy Carolinas
Public Utilities, General Disclosures [Line Items]
Capital expenditures				3,966	3,733	3,304
Operation, maintenance and other				1,740	1,774	1,892
Regulatory assets				4,884	5,480
Other Noncurrent Assets: Regulatory assets				4,199	3,916
Duke Energy Carolinas | Oconee Nuclear Station Subsequent License Renewal | Nuclear Regulatory Commission | Oconee
Public Utilities, General Disclosures [Line Items]
Operating license extension (in years)	20 years
Operating license (in years)	80 years	60 years
Duke Energy Carolinas | Natural Disasters and Other Casualty Events
Public Utilities, General Disclosures [Line Items]
Other Noncurrent Assets: Regulatory assets				34	32
Duke Energy Carolinas | Natural Disasters and Other Casualty Events | Hurricanes Helene, Debby and Milton | NCUC
Public Utilities, General Disclosures [Line Items]
Storm reserves				200
Duke Energy Carolinas | Natural Disasters and Other Casualty Events | Minimum
Public Utilities, General Disclosures [Line Items]
Storm costs incurred				612
Capital expenditures				402
Duke Energy Carolinas | Hurricanes Helene, Debby and Milton
Public Utilities, General Disclosures [Line Items]
Other Noncurrent Assets: Regulatory assets				583
Duke Energy Progress
Public Utilities, General Disclosures [Line Items]
Capital expenditures				2,803	2,387	2,070
Operation, maintenance and other				1,388	1,379	$ 1,475
Regulatory assets				5,181	5,488
Other Noncurrent Assets: Regulatory assets				4,555	4,546
Duke Energy Progress | Natural Disasters and Other Casualty Events
Public Utilities, General Disclosures [Line Items]
Other Noncurrent Assets: Regulatory assets				47	$ 55
Duke Energy Progress | Natural Disasters and Other Casualty Events | Hurricanes Helene, Debby and Milton | NCUC
Public Utilities, General Disclosures [Line Items]
Storm reserves				100
Duke Energy Progress | Natural Disasters and Other Casualty Events | Minimum
Public Utilities, General Disclosures [Line Items]
Storm costs incurred				248
Capital expenditures				146
Duke Energy Progress | Hurricanes Helene, Debby and Milton
Public Utilities, General Disclosures [Line Items]
Other Noncurrent Assets: Regulatory assets				$ 219

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